PATENT DOCUMENT

Publication Number: US-10114521-B2
Application Number: US-201514641287-A
Country: US
Kind Code: B2

Title: Multi-dimensional object rearrangement

Abstract:
A method includes displaying, on a touch-sensitive display, a plurality of application icons in a first configuration at locations on a hexagonal grid in relation to an origin. The application icons have corresponding ranks based on their respective locations in relation to the origin. In response to detecting a movement of a user contact from a first position to a second position: the display of a first application icon at a first location is translated to a second position; a second configuration of the application icons is determined based on the first location and the second location; and the display of the application icons is transitioned from the first configuration to the second configuration. In the second configuration, no application icon except the first application icon is displaced by more than one location relative to the first configuration.

Claims:
What is claimed is: 
     
       1. A non-transitory computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by one or more processors of an electronic device with a touch-sensitive display, cause the device to:
 display, on the display, a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display, the plurality of application icons occupying respective locations on a hexagonal grid; 
 detect a user contact on the touch-sensitive display at a first position corresponding to a first application icon at a first location on the hexagonal grid; 
 while continuing to detect the user contact, detect movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display, the second position corresponding to a second location on the hexagonal grid, wherein the second location is unoccupied; 
 in response to detecting movement of the user contact from the first position to the second position, translate the display of the first application icon from the first location to the second position; 
 detect a break in contact of the user contact on the touch-sensitive display; 
 in response to the break in contact of the user contact on the touch-sensitive display, determine whether there are less than two occupied locations adjacent to the second location; 
 in accordance with a determination that there are less than two occupied locations adjacent to the second location:
 determine a third location on the hexagonal grid having at least two adjacent locations that are occupied; and 
 move the display of the first application icon to the third location on the hexagonal grid; and 
 
 in accordance with a determination that there are not less than two occupied locations adjacent to the second location:
 display the first application icon at the second location on the hexagonal grid corresponding to the second position of the user contact on the touch-sensitive display. 
 
 
     
     
       2. The computer-readable storage medium of  claim 1 , wherein the third location is a location on the hexagonal grid nearest to the second location that is adjacent to at least two occupied locations. 
     
     
       3. The computer-readable storage medium of  claim 1 ,
 wherein translating the display of the first application icon from the first location results in an unoccupied location on the hexagonal grid at the first location, and 
 wherein the one or more programs further comprise instructions for:
 determining whether the unoccupied location is adjacent to six application icons; and 
 in accordance with a determination that the unoccupied location is adjacent to six application icons:
 determining a configuration of the plurality of application icons without an unoccupied location adjacent to six application icons; and 
 transitioning the display of the plurality of application icons to the determined configuration, wherein transitioning the display of the plurality of application icons to the determined configuration displaces no application icon except the first application icon by more than one location on the hexagonal grid. 
 
 
 
     
     
       4. The computer-readable storage medium of  claim 3 , wherein the one or more programs further comprise instructions for:
 in accordance with a determination that the unoccupied location is not adjacent to six application icons, maintaining the display of the plurality of application icons. 
 
     
     
       5. The computer-readable storage medium of  claim 3 ,
 wherein transitioning the display of the plurality of application icons to the determined configuration reduces a sum of the distances of the application icons from an origin of the hexagonal grid, excluding the distance of the first application icon. 
 
     
     
       6. The computer-readable storage medium of  claim 1 , wherein the one or more programs further comprise instructions for;
 detecting a first input on the touch-sensitive display; and 
 in response to detecting the first input, causing the electronic device to operate in the user interface reconfiguration mode. 
 
     
     
       7. The computer-readable storage medium of  claim 6 , wherein the first input is a first contact detected at a position corresponding to one of the plurality of application icons. 
     
     
       8. The computer-readable storage medium of  claim 7 , wherein the one or more programs further comprise instructions for:
 determining whether the duration of the first contact exceeds a predetermined threshold, 
 wherein the electronic device is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the first contact exceeds the predetermined threshold. 
 
     
     
       9. The computer-readable storage medium of  claim 8 , wherein the one or more programs further comprise instructions for:
 in response to detecting the first input and in accordance with a determination that the duration of the first contact does not exceed the predetermined threshold:
 launching the application program corresponding to the application icon at the position of the contact. 
 
 
     
     
       10. The computer-readable storage medium of  claim 9 , wherein the first input is the user contact. 
     
     
       11. The computer-readable storage medium of  claim 1 ,
 wherein the touch-sensitive display comprises one or more sensors to detect the intensity of contacts with the touch-sensitive display, and 
 wherein the one or more programs further comprise instructions for:
 detecting a first touch on the touch-sensitive display; 
 determining whether the touch has a characteristic intensity above a threshold intensity; and 
 
 in accordance with a determination that the characteristic intensity is above the threshold intensity, causing the electronic device to operate in the user interface reconfiguration mode. 
 
     
     
       12. A method, comprising:
 at an electronic device with a touch-sensitive display:
 displaying, on the display, a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display, the plurality of application icons occupying respective locations on a hexagonal grid; 
 detecting a user contact on the touch-sensitive display at a first position corresponding to a first application icon at a first location on the hexagonal grid; 
 while continuing to detect the user contact, detecting movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display, the second position corresponding to a second location on the hexagonal grid, wherein the second location is unoccupied; 
 in response to detecting movement of the user contact from the first position to the second position, translating the display of the first application icon from the first location to the second position; 
 detecting a break in contact of the user contact on the touch-sensitive display; 
 in response to the break in contact of the user contact on the touch-sensitive display, determining whether there are less than two occupied locations adjacent to the second location; 
 in accordance with a determination that there are less than two occupied locations adjacent to the second location:
 determining a third location on the hexagonal grid having at least two adjacent locations that are occupied; and 
 moving the display of the first application icon to the third location on the hexagonal grid; and 
 
 in accordance with a determination that there are not less than two occupied locations adjacent to the second location:
 displaying the first application icon at the second location on the hexagonal grid corresponding to the second position of the user contact on the touch-sensitive display. 
 
 
 
     
     
       13. An electronic device, comprising:
 a touch-sensitive display; 
 one or more processors; 
 a memory; and 
 one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for:
 displaying, on the display, a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display, the plurality of application icons occupying respective locations on a hexagonal grid; 
 detecting a user contact on the touch-sensitive display at a first position corresponding to a first application icon at a first location on the hexagonal grid; 
 while continuing to detect the user contact, detecting movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display, the second position corresponding to a second location on the hexagonal grid, wherein the second location is unoccupied; 
 in response to detecting movement of the user contact from the first position to the second position, translating the display of the first application icon from the first location to the second position; 
 detecting a break in contact of the user contact on the touch-sensitive display; 
 in response to the break in contact of the user contact on the touch-sensitive display, determining whether there are less than two occupied locations adjacent to the second location; 
 in accordance with a determination that there are less than two occupied locations adjacent to the second location:
 determining a third location on the hexagonal grid having at least two adjacent locations that are occupied; and 
 moving the display of the first application icon to the third location on the hexagonal grid; and 
 
 in accordance with a determination that there are not less than two occupied locations adjacent to the second location:
 displaying the first application icon at the second location on the hexagonal grid corresponding to the second position of the user contact on the touch-sensitive display. 
 
 
 
     
     
       14. The method of  claim 12 , wherein the third location is a location on the hexagonal grid nearest to the second location that is adjacent to at least two occupied locations. 
     
     
       15. The method of  claim 12 , wherein translating the display of the first application icon from the first location results in an unoccupied location on the hexagonal grid at the first location, and wherein the method further comprises:
 determining whether the unoccupied location is adjacent to six application icons; and 
 in accordance with a determination that the unoccupied location is adjacent to six application icons:
 determining a configuration of the plurality of application icons without an unoccupied location adjacent to six application icons; and 
 transitioning the display of the plurality of application icons to the determined configuration, wherein transitioning the display of the plurality of application icons to the determined configuration displaces no application icon except the first application icon by more than one location on the hexagonal grid. 
 
 
     
     
       16. The method of  claim 15 , further comprising:
 in accordance with a determination that the unoccupied location is not adjacent to six application icons, maintaining the display of the plurality of application icons. 
 
     
     
       17. The method of  claim 15 , wherein transitioning the display of the plurality of application icons to the determined configuration reduces a sum of the distances of the application icons from an origin of the hexagonal grid, excluding the distance of the first application icon. 
     
     
       18. The method of  claim 12 , further comprising:
 detecting a first input on the touch-sensitive display; and 
 in response to detecting the first input, causing the electronic device to operate in the user interface reconfiguration mode. 
 
     
     
       19. The method of  claim 18 , wherein the first input is a first contact detected at a position corresponding to one of the plurality of application icons. 
     
     
       20. The method of  claim 19 , further comprising:
 determining whether the duration of the first contact exceeds a predetermined threshold,
 wherein the electronic device is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the first contact exceeds the predetermined threshold. 
 
 
     
     
       21. The method of  claim 20 , further comprising:
 in response to detecting the first input and in accordance with a determination that the duration of the first contact does not exceed the predetermined threshold:
 launching the application program corresponding to the application icon at the position of the contact. 
 
 
     
     
       22. The method of  claim 21 , wherein the first input is the user contact. 
     
     
       23. The method of  claim 12 , wherein the touch-sensitive display comprises one or more sensors to detect the intensity of contacts with the touch-sensitive display, and wherein the method further comprises:
 detecting a first touch on the touch-sensitive display; 
 determining whether the touch has a characteristic intensity above a threshold intensity; and 
 in accordance with a determination that the characteristic intensity is above the threshold intensity, causing the electronic device to operate in the user interface reconfiguration mode. 
 
     
     
       24. The electronic device of  claim 13 , wherein the third location is a location on the hexagonal grid nearest to the second location that is adjacent to at least two occupied locations. 
     
     
       25. The electronic device of  claim 13 , wherein translating the display of the first application icon from the first location results in an unoccupied location on the hexagonal grid at the first location, and wherein the one or more programs further comprise instructions for:
 determining whether the unoccupied location is adjacent to six application icons; and 
 in accordance with a determination that the unoccupied location is adjacent to six application icons:
 determining a configuration of the plurality of application icons without an unoccupied location adjacent to six application icons; and 
 transitioning the display of the plurality of application icons to the determined configuration, wherein transitioning the display of the plurality of application icons to the determined configuration displaces no application icon except the first application icon by more than one location on the hexagonal grid. 
 
 
     
     
       26. The electronic device of  claim 25 , wherein the one or more programs further comprise instructions for:
 in accordance with a determination that the unoccupied location is not adjacent to six application icons, maintaining the display of the plurality of application icons. 
 
     
     
       27. The electronic device of  claim 25 , wherein transitioning the display of the plurality of application icons to the determined configuration reduces a sum of the distances of the application icons from an origin of the hexagonal grid, excluding the distance of the first application icon. 
     
     
       28. The electronic device of  claim 13 , wherein the one or more programs further comprise instructions for:
 detecting a first input on the touch-sensitive display; and 
 in response to detecting the first input, causing the electronic device to operate in the user interface reconfiguration mode. 
 
     
     
       29. The electronic device of  claim 28 , wherein the first input is a first contact detected at a position corresponding to one of the plurality of application icons. 
     
     
       30. The electronic device of  claim 29 , wherein the one or more programs further comprise instructions for:
 determining whether the duration of the first contact exceeds a predetermined threshold,
 wherein the electronic device is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the first contact exceeds the predetermined threshold. 
 
 
     
     
       31. The electronic device of  claim 30 , wherein the one or more programs further comprise instructions for:
 in response to detecting the first input and in accordance with a determination that the duration of the first contact does not exceed the predetermined threshold:
 launching the application program corresponding to the application icon at the position of the contact. 
 
 
     
     
       32. The electronic device of  claim 31 , wherein the first input is the user contact. 
     
     
       33. The electronic device of  claim 13 , wherein the touch-sensitive display comprises one or more sensors to detect the intensity of contacts with the touch-sensitive display, and wherein the one or more programs further comprise instructions for:
 detecting a first touch on the touch-sensitive display; 
 determining whether the touch has a characteristic intensity above a threshold intensity; and 
 in accordance with a determination that the characteristic intensity is above the threshold intensity, causing the electronic device to operate in the user interface reconfiguration mode.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to U.S. Provisional Application Ser. No. 62/044,987, entitled “MULTI-DIMENSIONAL OBJECT REARRANGEMENT,” filed Sep. 2, 2014, the content of which is hereby incorporated by reference in its entirety. 
     This application relates to the following applications: International Patent Application Serial No. PCT/US2013/040087, entitled “Device, Method, and Graphical User Interface for Moving a User Interface Object Based on an Intensity of a Press Input,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040072, entitled “Device, Method, and Graphical User Interface for Providing Feedback for Changing Activation States of a User Interface Object,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040070, entitled “Device, Method, and Graphical User Interface for Providing Tactile Feedback for Operations Performed in a User Interface,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040067, entitled “Device, Method, and Graphical User Interface for Facilitating User Interaction with Controls in a User Interface,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040061, entitled “Device, Method, and Graphical User Interface for Displaying User Interface Objects Corresponding to an Application,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040058, entitled “Device, Method, and Graphical User Interface for Displaying Additional Information in Response to a User Contact,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040056, entitled “Device, Method, and Graphical User Interface for Scrolling Nested Regions,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040054, entitled “Device, Method, and Graphical User Interface for Manipulating Framed Graphical Objects,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/069489, entitled “Device, Method, and Graphical User Interface for Switching Between User Interfaces,” filed Nov. 11, 2013; International Patent Application Serial No. PCT/US2013/069486, entitled “Device, Method, and Graphical User Interface for Determining Whether to Scroll or Select Content,” filed Nov. 11, 2013; International Patent Application Serial No. PCT/US2013/069484, entitled “Device, Method, and Graphical User Interface for Moving a Cursor According to a Change in an Appearance of a Control Icon with Simulated Three-Dimensional Characteristics,” filed Nov. 11, 2013; International Patent Application Serial No. PCT/US2013/069483, entitled “Device, Method, and Graphical User Interface for Transitioning Between Touch Input to Display Output Relationships,” filed Nov. 11, 2013; International Patent Application Serial No. PCT/US2013/069479, entitled “Device, Method, and Graphical User Interface for Forgoing Generation of Tactile Output for a Multi-Contact Gesture,” filed Nov. 11, 2013; International Patent Application Serial No. PCT/US2013/069472, entitled “Device, Method, and Graphical User Interface for Navigating User Interface Hierarchies,” filed Nov. 11, 2013; International Patent Application Serial No. PCT/US2013/040108, entitled “Device, Method, and Graphical User Interface for Moving and Dropping a User Interface Object,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040101, entitled “Device, Method, and Graphical User Interface for Selecting User Interface Objects,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040098, entitled “Device, Method, and Graphical User Interface for Displaying Content Associated with a Corresponding Affordance,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040093, entitled “Device, Method, and Graphical User Interface for Transitioning Between Display States in Response to a Gesture,” filed May 8, 2013; International Patent Application Serial No. PCT/US2013/040053, entitled “Device, Method, and Graphical User Interface for Selecting Object within a Group of Objects,” filed May 8, 2013; U.S. Patent Application Ser. No. 61/778,211, entitled “Device, Method, and Graphical User Interface for Facilitating User Interaction with Controls in a User Interface,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,191, entitled “Device, Method, and Graphical User Interface for Displaying User Interface Objects Corresponding to an Application,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,171, entitled “Device, Method, and Graphical User Interface for Displaying Additional Information in Response to a User Contact,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,179, entitled “Device, Method and Graphical User Interface for Scrolling Nested Regions,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,156, entitled “Device, Method, and Graphical User Interface for Manipulating Framed Graphical Objects,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,125, entitled “Device, Method, And Graphical User Interface for Navigating User Interface Hierarchies,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,092, entitled “Device, Method, and Graphical User Interface for Selecting Object Within a Group of Objects,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,418, entitled “Device, Method, and Graphical User Interface for Switching Between User Interfaces,” filed Mar. 13, 2013; U.S. Patent Application Ser. No. 61/778,416, entitled “Device, Method, and Graphical User Interface for Determining Whether to Scroll or Select Content,” filed Mar. 13, 2013; U.S. Patent Application Ser. No. 61/747,278, entitled “Device, Method, and Graphical User Interface for Manipulating User Interface Objects with Visual and/or Haptic Feedback,” filed Dec. 29, 2012; U.S. Patent Application Ser. No. 61/778,414, entitled “Device, Method, and Graphical User Interface for Moving and Dropping a User Interface Object,” filed Mar. 13, 2013; U.S. Patent Application Ser. No. 61/778,413, entitled “Device, Method, and Graphical User Interface for Selecting User Interface Objects,” filed Mar. 13, 2013; U.S. Patent Application Ser. No. 61/778,412, entitled “Device, Method, and Graphical User Interface for Displaying Content Associated with a Corresponding Affordance,” filed Mar. 13, 2013; U.S. Patent Application Ser. No. 61/778,373, entitled “Device, Method, and Graphical User Interface for Managing Activation of a Control Based on Contact Intensity,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,265, entitled “Device, Method, and Graphical User Interface for Transitioning Between Display States in Response to a Gesture,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,367, entitled “Device, Method, and Graphical User Interface for Moving a User Interface Object Based on an Intensity of a Press Input,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,363, entitled “Device, Method, and Graphical User Interface for Transitioning Between Touch Input to Display Output Relationships,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,287, entitled “Device, Method, and Graphical User Interface for Providing Feedback for Changing Activation States of a User Interface Object,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,284, entitled “Device, Method, and Graphical User Interface for Providing Tactile Feedback for Operations Performed in a User Interface,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/778,239, entitled “Device, Method, and Graphical User Interface for Forgoing Generation of Tactile Output for a Multi-Contact Gesture,” filed Mar. 12, 2013; U.S. Patent Application Ser. No. 61/688,227, entitled “Device, Method, and Graphical User Interface for Manipulating User Interface Objects with Visual and/or Haptic Feedback,” filed May 9, 2012; U.S. Patent Application No. 62/005,958, “Canned Answers in Messages,” filed May 30, 2014. The content of these applications are hereby incorporated by reference in their entirety. 
    
    
     BACKGROUND 
     1. Field 
     The present disclosure relates generally to computer user interfaces, and more specifically to techniques and user interface screens for reconfiguring user interface objects. 
     2. Description of Related Art 
     Modern electronic devices may include the ability to store, access, and/or run a large number of application programs. The applications may be launched by selecting respective icons displayed on a user interface screen of a device. Accordingly, a screen may include a large number of displayed application icons. A user may desire for the icons to be displayed in a particular arrangement so that, for example, the icons of the most frequently used applications are displayed in a position that are easy to locate and select (e.g., the top or center of the display). Thus, there is a need for techniques that allow a user to easily and efficiently rearrange icons displayed on a user interface to desired locations. 
     In addition, recent advances in computer technology have enabled manufacturers to produce such electronic devices in relatively small form factors. One challenge created by a small form factor, is that the display may be small, which can make it difficult for a user to view and position icons in the desired locations. 
     Thus, there is a need for user-friendly techniques and reduced size user interfaces for displaying and reconfiguring user interface objects such as application icons on devices with small form factors. 
     BRIEF SUMMARY 
     In some embodiments, a method comprises: at an electronic device with a touch-sensitive display: displaying on the display a plurality of application icons for launching application programs, the application icons arranged in a first configuration, wherein the application icons occupy respective locations on a hexagonal grid in relation to an origin; detecting a first input on the touch-sensitive display; in response to detecting the first input, causing the electronic device to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display; detecting a second input on the touch-sensitive display representing a selection of a first application icon at a first location on the hexagonal grid; in response to the second input, removing the display of the first application icon; determining a second configuration of the application icons without the first application icon, wherein a sum of the distances from the origin of the application icons in the first configuration, minus the distance from the origin of the first application icon in the first configuration, is greater than a sum of the distances from the origin of the application icons in the second configuration; and transitioning the display of the plurality of application icons from the first configuration to the second configuration. 
     In some embodiments, a method comprises: at an electronic device with a touch-sensitive display: displaying, on the display, a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display, wherein the plurality of application icons occupy respective locations on a hexagonal grid; detecting a user contact on the touch-sensitive display at a first position corresponding to a first application icon at a first location on the hexagonal grid; while continuing to detect the user contact, detecting movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display, the second position corresponding to a second application icon at a second location on the hexagonal grid; in response to detecting movement of the user contact from the first position to the second position: translating the display of the first application icon from the first location to the second position; and moving the display of the second application icon to the first location. 
     In some embodiments, a method comprises: at an electronic device with a display: displaying, on the display, a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display, the plurality of application icons occupying respective locations on a hexagonal grid; detecting a user contact on the touch-sensitive display at a first position corresponding to a first application icon at a first location on the hexagonal grid; while continuing to detect the user contact, detecting movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display, the second position corresponding to a second location on the hexagonal grid, wherein the second location is unoccupied; in response to detecting movement of the user contact from the first position to the second position, translating the display of the first application icon from the first location to the second position; detecting a break in contact of the user contact on the touch-sensitive display; in response to the break in contact of the user contact on the touch-sensitive display, determining whether there are less than two occupied locations adjacent to the second location; in accordance with a determination that there are less than two occupied locations adjacent to the second location: determining a third location on the hexagonal grid having at least two adjacent locations that are occupied; and moving the display of the first application icon to the third location on the hexagonal grid. 
     In some embodiments, a method comprises: at an electronic device with a touch-sensitive display: displaying, on the display, a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display, the application icons arranged in a first configuration, wherein the application icons occupy respective locations on a hexagonal grid in relation to an origin, and wherein the application icons have corresponding ranks based on their respective locations in relation to the origin; detecting a user contact on the touch-sensitive display at a first position corresponding to a first application icon at a first location on the hexagonal grid; while continuing to detect the user contact, detecting movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display, the second position corresponding to a second application icon at a second location on the hexagonal grid; in response to detecting movement of the user contact from the first position to the second position: translating the display of the first application icon from the first location to the second position; determining a second configuration of the application icons based on the first location and the second location; and transitioning the display of the application icons from the first configuration to the second configuration, wherein, in the second configuration, no application icon except the first application icon is displaced by more than one location relative to the first configuration, and wherein transitioning the display of the application icons from the first configuration to the second configuration comprises: moving the display of the second application icon to a third location adjacent to the second location; and moving a display of a third application icon to the first location from a fourth location adjacent to the first location. 
     In some embodiments, a method comprises: at an electronic device with a touch-sensitive display: displaying one or more application icons in a hexagonal arrangement; detecting a first input on the touch-sensitive display; and in response to the first input: causing the electronic device to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display; and causing the display of the first application icon to fluctuate in size. 
     In some embodiments, a method comprises: at an electronic device with a touch-sensitive display, wherein the touch-sensitive display comprises one or more sensors to detect the intensity of contacts with the touch-sensitive display: displaying one or more application icons in a hexagonal arrangement; detecting, on the touch-sensitive display, a touch corresponding to a selection of a first application icon corresponding to a respective application; determining whether the touch has a characteristic intensity above a threshold intensity; and in accordance with a determination that the characteristic intensity is above the threshold intensity, removing the display of the selected icon. 
     In some embodiments, a method comprises: at an electronic device with a touch-sensitive display, wherein the touch-sensitive display comprises one or more sensors to detect the intensity of contacts with the touch-sensitive display: displaying one or more application icons in a hexagonal arrangement; detecting, on the touch-sensitive display, a first touch; determining whether the touch has a characteristic intensity above a threshold intensity; and in accordance with a determination that the characteristic intensity is above the threshold intensity, displaying a deletion confirmation affordance. 
     In some embodiments, a system comprises means for performing any of the methods described above. 
     In some embodiments, a non-transitory computer-readable storage medium comprises instructions for performing the methods described above. In some embodiments, a system comprises the non-transitory computer-readable storage medium; and one or more processors capable of executing the instructions of the non-transitory computer-readable storage medium. 
    
    
     
       DESCRIPTION OF THE FIGURES 
       For a better understanding of the various described embodiments, reference should be made to the Description of Embodiments below, in conjunction with the following drawings in which like reference numerals refer to corresponding parts throughout the figures. 
         FIG. 1A  is a block diagram illustrating a portable multifunction device with a touch-sensitive display in accordance with some embodiments. 
         FIG. 1B  is a block diagram illustrating exemplary components for event handling in accordance with some embodiments. 
         FIG. 2  illustrates a portable multifunction device having a touch-sensitive display in accordance with some embodiments. 
         FIG. 3  is a block diagram of an exemplary multifunction device with a display and a touch-sensitive surface in accordance with some embodiments. 
         FIG. 4A  illustrates an exemplary user interface for a menu of applications on a portable multifunction device in accordance with some embodiments. 
         FIG. 4B  illustrates an exemplary user interface for a multifunction device with a touch-sensitive surface that is separate from the display in accordance with some embodiments. 
         FIG. 5A  is a block diagram illustrating a portable multifunction device with a touch-sensitive display and a rotatable input mechanism in accordance with some embodiments. 
         FIG. 5B  illustrates a portable multifunction device having a touch-sensitive display and a rotatable input mechanism in accordance with some embodiments. 
         FIG. 6  illustrates an exemplary hexagonal grid in accordance with some embodiments. 
         FIG. 7  illustrates an exemplary user interface with a plurality of user interface objects arranged on a hexagonal grid in accordance with some embodiments. 
         FIGS. 8A-8D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 9A-9D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 10A-10D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 11A-11D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 12A-12D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 13A-13D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 14A-14D  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIGS. 15A-15C  illustrate exemplary techniques for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 16  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 17  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 18  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 19  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 20  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 21  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 22  is a flow diagram illustrating a process for reconfiguring a user interface in accordance with some embodiments. 
         FIG. 23  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 24  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 25  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 26  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 27  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 28  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 29  is a functional block diagram of an electronic device in accordance with some embodiments. 
         FIG. 30  is a functional block diagram of an electronic device in accordance with some embodiments. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     The following description sets forth exemplary methods, parameters and the like. It should be recognized, however, that such description is not intended as a limitation on the scope of the present disclosure but is instead provided as a description of exemplary embodiments. 
     Below,  FIGS. 1A-1B, 2, 3, 4A-4B, and 5A-5B  provide a description of exemplary devices that may perform techniques associated with reconfiguring a user interface.  FIGS. 6-15  illustrate exemplary techniques for reconfiguring user interfaces, including rearranging user interface objects such as application icons. The user interfaces in the figures are also used to illustrate the processes described below, including the processes in  FIGS. 16-22 . 
     Although the following description uses terms “first,” “second,” etc. to describe various elements, these elements should not be limited by the terms. These terms are only used to distinguish one element from another. For example, a first touch could be termed a second touch, and, similarly, a second touch could be termed a first touch, without departing from the scope of the various described embodiments. The first touch and the second touch are both touches, but they are not the same touch. 
     The terminology used in the description of the various described embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms “a”, “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “includes,” “including,” “comprises,” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. 
     The term “if” may be construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” may be construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context. 
     Embodiments of electronic devices, user interfaces for such devices, and associated processes for using such devices are described. In some embodiments, the device is a portable communications device, such as a mobile telephone, that also contains other functions, such as PDA and/or music player functions. Exemplary embodiments of portable multifunction devices include, without limitation, the iPhone®, iPod Touch®, and iPad® devices from Apple Inc. of Cupertino, Calif. Other portable electronic devices, such as laptops or tablet computers with touch-sensitive surfaces (e.g., touch screen displays and/or touchpads), are, optionally, used. It should also be understood that, in some embodiments, the device is not a portable communications device, but is a desktop computer with a touch-sensitive surface (e.g., a touch screen display and/or a touchpad). 
     In the discussion that follows, an electronic device that includes a display and a touch-sensitive surface is described. It should be understood, however, that the electronic device optionally includes one or more other physical user-interface devices, such as a physical keyboard, a mouse, and/or a joystick. 
     The device may support a variety of applications, such as one or more of the following: a drawing application, a presentation application, a word processing application, a website creation application, a disk authoring application, a spreadsheet application, a gaming application, a telephone application, a video conferencing application, an e-mail application, an instant messaging application, a workout support application, a photo management application, a digital camera application, a digital video camera application, a web browsing application, a digital music player application, and/or a digital video player application. 
     The various applications that are executed on the device optionally use at least one common physical user-interface device, such as the touch-sensitive surface. One or more functions of the touch-sensitive surface as well as corresponding information displayed on the device are, optionally, adjusted and/or varied from one application to the next and/or within a respective application. In this way, a common physical architecture (such as the touch-sensitive surface) of the device optionally supports the variety of applications with user interfaces that are intuitive and transparent to the user. 
     Attention is now directed toward embodiments of portable devices with touch-sensitive displays.  FIG. 1A  is a block diagram illustrating portable multifunction device  100  with touch-sensitive display system  112  in accordance with some embodiments. Touch-sensitive display  112  is sometimes called a “touch screen” for convenience and is sometimes known as or called a “touch-sensitive display system.” Device  100  includes memory  102  (which optionally includes one or more computer-readable storage mediums), memory controller  122 , one or more processing units (CPUs)  120 , peripherals interface  118 , RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , input/output (I/O) subsystem  106 , other input control devices  116 , and external port  124 . Device  100  optionally includes one or more optical sensors  164 . Device  100  optionally includes one or more contact intensity sensors  165  for detecting intensity of contacts on device  100  (e.g., a touch-sensitive surface such as touch-sensitive display system  112  of device  100 ). Device  100  optionally includes one or more tactile output generators  167  for generating tactile outputs on device  100  (e.g., generating tactile outputs on a touch-sensitive surface such as touch-sensitive display system  112  of device  100  or touchpad  355  of device  300 ). These components optionally communicate over one or more communication buses or signal lines  103 . 
     As used in the specification and claims, the term “intensity” of a contact on a touch-sensitive surface refers to the force or pressure (force per unit area) of a contact (e.g., a finger contact) on the touch-sensitive surface, or to a substitute (proxy) for the force or pressure of a contact on the touch-sensitive surface. The intensity of a contact has a range of values that includes at least four distinct values and more typically includes hundreds of distinct values (e.g., at least 256). Intensity of a contact is, optionally, determined (or measured) using various approaches and various sensors or combinations of sensors. For example, one or more force sensors underneath or adjacent to the touch-sensitive surface are, optionally, used to measure force at various points on the touch-sensitive surface. In some implementations, force measurements from multiple force sensors are combined (e.g., a weighted average) to determine an estimated force of a contact. Similarly, a pressure-sensitive tip of a stylus is, optionally, used to determine a pressure of the stylus on the touch-sensitive surface. Alternatively, the size of the contact area detected on the touch-sensitive surface and/or changes thereto, the capacitance of the touch-sensitive surface proximate to the contact and/or changes thereto, and/or the resistance of the touch-sensitive surface proximate to the contact and/or changes thereto are, optionally, used as a substitute for the force or pressure of the contact on the touch-sensitive surface. In some implementations, the substitute measurements for contact force or pressure are used directly to determine whether an intensity threshold has been exceeded (e.g., the intensity threshold is described in units corresponding to the substitute measurements). In some implementations, the substitute measurements for contact force or pressure are converted to an estimated force or pressure, and the estimated force or pressure is used to determine whether an intensity threshold has been exceeded (e.g., the intensity threshold is a pressure threshold measured in units of pressure). Using the intensity of a contact as an attribute of a user input allows for user access to additional device functionality that may otherwise not be accessible by the user on a reduced-size device with limited real estate for displaying affordances (e.g., on a touch-sensitive display) and/or receiving user input (e.g., via a touch-sensitive display, a touch-sensitive surface, or a physical/mechanical control such as a knob or a button). 
     As used in the specification and claims, the term “tactile output” refers to physical displacement of a device relative to a previous position of the device, physical displacement of a component (e.g., a touch-sensitive surface) of a device relative to another component (e.g., housing) of the device, or displacement of the component relative to a center of mass of the device that will be detected by a user with the user&#39;s sense of touch. For example, in situations where the device or the component of the device is in contact with a surface of a user that is sensitive to touch (e.g., a finger, palm, or other part of a user&#39;s hand), the tactile output generated by the physical displacement will be interpreted by the user as a tactile sensation corresponding to a perceived change in physical characteristics of the device or the component of the device. For example, movement of a touch-sensitive surface (e.g., a touch-sensitive display or trackpad) is, optionally, interpreted by the user as a “down click” or “up click” of a physical actuator button. In some cases, a user will feel a tactile sensation such as an “down click” or “up click” even when there is no movement of a physical actuator button associated with the touch-sensitive surface that is physically pressed (e.g., displaced) by the user&#39;s movements. As another example, movement of the touch-sensitive surface is, optionally, interpreted or sensed by the user as “roughness” of the touch-sensitive surface, even when there is no change in smoothness of the touch-sensitive surface. While such interpretations of touch by a user will be subject to the individualized sensory perceptions of the user, there are many sensory perceptions of touch that are common to a large majority of users. Thus, when a tactile output is described as corresponding to a particular sensory perception of a user (e.g., an “up click,” a “down click,” “roughness”), unless otherwise stated, the generated tactile output corresponds to physical displacement of the device or a component thereof that will generate the described sensory perception for a typical (or average) user. 
     It should be appreciated that device  100  is only one example of a portable multifunction device, and that device  100  optionally has more or fewer components than shown, optionally combines two or more components, or optionally has a different configuration or arrangement of the components. The various components shown in  FIG. 1A  are implemented in hardware, software, or a combination of both hardware and software, including one or more signal processing and/or application-specific integrated circuits. 
     Memory  102  may include one or more computer-readable storage mediums. The computer-readable storage mediums may be tangible and non-transitory. Memory  102  may include high-speed random access memory and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state memory devices. Memory controller  122  may control access to memory  102  by other components of device  100 . 
     Peripherals interface  118  can be used to couple input and output peripherals of the device to CPU  120  and memory  102 . The one or more processors  120  run or execute various software programs and/or sets of instructions stored in memory  102  to perform various functions for device  100  and to process data. In some embodiments, peripherals interface  118 , CPU  120 , and memory controller  122  may be implemented on a single chip, such as chip  104 . In some other embodiments, they may be implemented on separate chips. 
     RF (radio frequency) circuitry  108  receives and sends RF signals, also called electromagnetic signals. RF circuitry  108  converts electrical signals to/from electromagnetic signals and communicates with communications networks and other communications devices via the electromagnetic signals. RF circuitry  108  optionally includes well-known circuitry for performing these functions, including but not limited to an antenna system, an RF transceiver, one or more amplifiers, a tuner, one or more oscillators, a digital signal processor, a CODEC chipset, a subscriber identity module (SIM) card, memory, and so forth. RF circuitry  108  optionally communicates with networks, such as the Internet, also referred to as the World Wide Web (WWW), an intranet and/or a wireless network, such as a cellular telephone network, a wireless local area network (LAN) and/or a metropolitan area network (MAN), and other devices by wireless communication. The RF circuitry  108  optionally includes well-known circuitry for detecting near field communication (NFC) fields, such as by a short-range communication radio. The wireless communication optionally uses any of a plurality of communications standards, protocols, and technologies, including but not limited to Global System for Mobile Communications (GSM), Enhanced Data GSM Environment (EDGE), high-speed downlink packet access (HSDPA), high-speed uplink packet access (HSUPA), Evolution, Data-Only (EV-DO), HSPA, HSPA+, Dual-Cell HSPA (DC-HSPDA), long term evolution (LTE), near field communication (NFC), wideband code division multiple access (W-CDMA), code division multiple access (CDMA), time division multiple access (TDMA), Bluetooth, Bluetooth Low Energy (BTLE), Wireless Fidelity (Wi-Fi) (e.g., IEEE 802.11a, IEEE 802.11b, IEEE 802.11g, IEEE 802.11n, and/or IEEE 802.11ac), voice over Internet Protocol (VoIP), Wi-MAX, a protocol for e-mail (e.g., Internet message access protocol (IMAP) and/or post office protocol (POP)), instant messaging (e.g., extensible messaging and presence protocol (XMPP), Session Initiation Protocol for Instant Messaging and Presence Leveraging Extensions (SIMPLE), Instant Messaging and Presence Service (IMPS)), and/or Short Message Service (SMS), or any other suitable communication protocol, including communication protocols not yet developed as of the filing date of this document. 
     Audio circuitry  110 , speaker  111 , and microphone  113  provide an audio interface between a user and device  100 . Audio circuitry  110  receives audio data from peripherals interface  118 , converts the audio data to an electrical signal, and transmits the electrical signal to speaker  111 . Speaker  111  converts the electrical signal to human-audible sound waves. Audio circuitry  110  also receives electrical signals converted by microphone  113  from sound waves. Audio circuitry  110  converts the electrical signal to audio data and transmits the audio data to peripherals interface  118  for processing. Audio data may be retrieved from and/or transmitted to memory  102  and/or RF circuitry  108  by peripherals interface  118 . In some embodiments, audio circuitry  110  also includes a headset jack (e.g.,  212 ,  FIG. 2 ). The headset jack provides an interface between audio circuitry  110  and removable audio input/output peripherals, such as output-only headphones or a headset with both output (e.g., a headphone for one or both ears) and input (e.g., a microphone). 
     I/O subsystem  106  couples input/output peripherals on device  100 , such as touch screen  112  and other input control devices  116 , to peripherals interface  118 . I/O subsystem  106  optionally includes display controller  156 , optical sensor controller  158 , intensity sensor controller  159 , haptic feedback controller  161 , and one or more input controllers  160  for other input or control devices. The one or more input controllers  160  receive/send electrical signals from/to other input control devices  116 . The other input control devices  116  optionally include physical buttons (e.g., push buttons, rocker buttons, etc.), dials, slider switches, joysticks, click wheels, and so forth. In some alternate embodiments, input controller(s)  160  are, optionally, coupled to any (or none) of the following: a keyboard, an infrared port, a USB port, and a pointer device such as a mouse. The one or more buttons (e.g.,  208 ,  FIG. 2 ) optionally include an up/down button for volume control of speaker  111  and/or microphone  113 . The one or more buttons optionally include a push button (e.g.,  206 ,  FIG. 2 ). 
     A quick press of the push button may disengage a lock of touch screen  112  or begin a process that uses gestures on the touch screen to unlock the device, as described in U.S. patent application Ser. No. 11/322,549, “Unlocking a Device by Performing Gestures on an Unlock Image,” filed Dec. 23, 2005, U.S. Pat. No. 7,657,849, which is hereby incorporated by reference in its entirety. A longer press of the push button (e.g.,  206 ) may turn power to device  100  on or off. The user may be able to customize a functionality of one or more of the buttons. Touch screen  112  is used to implement virtual or soft buttons and one or more soft keyboards. 
     Touch-sensitive display  112  provides an input interface and an output interface between the device and a user. Display controller  156  receives and/or sends electrical signals from/to touch screen  112 . Touch screen  112  displays visual output to the user. The visual output may include graphics, text, icons, video, and any combination thereof (collectively termed “graphics”). In some embodiments, some or all of the visual output may correspond to user-interface objects. 
     Touch screen  112  has a touch-sensitive surface, sensor, or set of sensors that accepts input from the user based on haptic and/or tactile contact. Touch screen  112  and display controller  156  (along with any associated modules and/or sets of instructions in memory  102 ) detect contact (and any movement or breaking of the contact) on touch screen  112  and convert the detected contact into interaction with user-interface objects (e.g., one or more soft keys, icons, web pages, or images) that are displayed on touch screen  112 . In an exemplary embodiment, a point of contact between touch screen  112  and the user corresponds to a finger of the user. 
     Touch screen  112  may use LCD (liquid crystal display) technology, LPD (light emitting polymer display) technology, or LED (light emitting diode) technology, although other display technologies may be used in other embodiments. Touch screen  112  and display controller  156  may detect contact and any movement or breaking thereof using any of a plurality of touch sensing technologies now known or later developed, including but not limited to capacitive, resistive, infrared, and surface acoustic wave technologies, as well as other proximity sensor arrays or other elements for determining one or more points of contact with touch screen  112 . In an exemplary embodiment, projected mutual capacitance sensing technology is used, such as that found in the iPhone® and iPod Touch® from Apple Inc. of Cupertino, Calif. 
     A touch-sensitive display in some embodiments of touch screen  112  may be analogous to the multi-touch sensitive touchpads described in the following U.S. patents: U.S. Pat. No. 6,323,846 (Westerman et al.), U.S. Pat. No. 6,570,557 (Westerman et al.), and/or U.S. Pat. No. 6,677,932 (Westerman), and/or U.S. Patent Publication 2002/0015024A1, each of which is hereby incorporated by reference in its entirety. However, touch screen  112  displays visual output from device  100 , whereas touch-sensitive touchpads do not provide visual output. 
     A touch-sensitive display in some embodiments of touch screen  112  may be as described in the following applications: (1) U.S. patent application Ser. No. 11/381,313, “Multipoint Touch Surface Controller,” filed May 2, 2006; (2) U.S. patent application Ser. No. 10/840,862, “Multipoint Touchscreen,” filed May 6, 2004; (3) U.S. patent application Ser. No. 10/903,964, “Gestures For Touch Sensitive Input Devices,” filed Jul. 30, 2004; (4) U.S. patent application Ser. No. 11/048,264, “Gestures For Touch Sensitive Input Devices,” filed Jan. 31, 2005; (5) U.S. patent application Ser. No. 11/038,590, “Mode-Based Graphical User Interfaces For Touch Sensitive Input Devices,” filed Jan. 18, 2005; (6) U.S. patent application Ser. No. 11/228,758, “Virtual Input Device Placement On A Touch Screen User Interface,” filed Sep. 16, 2005; (7) U.S. patent application Ser. No. 11/228,700, “Operation Of A Computer With A Touch Screen Interface,” filed Sep. 16, 2005; (8) U.S. patent application Ser. No. 11/228,737, “Activating Virtual Keys Of A Touch-Screen Virtual Keyboard,” filed Sep. 16, 2005; and (9) U.S. patent application Ser. No. 11/367,749, “Multi-Functional Hand-Held Device,” filed Mar. 3, 2006. All of these applications are incorporated by reference herein in their entirety. 
     Touch screen  112  may have a video resolution in excess of 100 dpi. In some embodiments, the touch screen has a video resolution of approximately 160 dpi. The user may make contact with touch screen  112  using any suitable object or appendage, such as a stylus, a finger, and so forth. In some embodiments, the user interface is designed to work primarily with finger-based contacts and gestures, which can be less precise than stylus-based input due to the larger area of contact of a finger on the touch screen. In some embodiments, the device translates the rough finger-based input into a precise pointer/cursor position or command for performing the actions desired by the user. 
     In some embodiments, in addition to the touch screen, device  100  may include a touchpad (not shown) for activating or deactivating particular functions. In some embodiments, the touchpad is a touch-sensitive area of the device that, unlike the touch screen, does not display visual output. The touchpad may be a touch-sensitive surface that is separate from touch screen  112  or an extension of the touch-sensitive surface formed by the touch screen. 
     Device  100  also includes power system  162  for powering the various components. Power system  162  may include a power management system, one or more power sources (e.g., battery, alternating current (AC)), a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator (e.g., a light-emitting diode (LED)) and any other components associated with the generation, management and distribution of power in portable devices. 
     Device  100  may also include one or more optical sensors  164 .  FIG. 1A  shows an optical sensor coupled to optical sensor controller  158  in I/O subsystem  106 . Optical sensor  164  may include charge-coupled device (CCD) or complementary metal-oxide semiconductor (CMOS) phototransistors. Optical sensor  164  receives light from the environment, projected through one or more lenses, and converts the light to data representing an image. In conjunction with imaging module  143  (also called a camera module), optical sensor  164  may capture still images or video. In some embodiments, an optical sensor is located on the back of device  100 , opposite touch screen display  112  on the front of the device so that the touch screen display may be used as a viewfinder for still and/or video image acquisition. In some embodiments, an optical sensor is located on the front of the device so that the user&#39;s image may be obtained for video conferencing while the user views the other video conference participants on the touch screen display. In some embodiments, the position of optical sensor  164  can be changed by the user (e.g., by rotating the lens and the sensor in the device housing) so that a single optical sensor  164  may be used along with the touch screen display for both video conferencing and still and/or video image acquisition. 
     Device  100  optionally also includes one or more contact intensity sensors  165 .  FIG. 1A  shows a contact intensity sensor coupled to intensity sensor controller  159  in I/O subsystem  106 . Contact intensity sensor  165  optionally includes one or more piezoresistive strain gauges, capacitive force sensors, electric force sensors, piezoelectric force sensors, optical force sensors, capacitive touch-sensitive surfaces, or other intensity sensors (e.g., sensors used to measure the force (or pressure) of a contact on a touch-sensitive surface). Contact intensity sensor  165  receives contact intensity information (e.g., pressure information or a proxy for pressure information) from the environment. In some embodiments, at least one contact intensity sensor is collocated with, or proximate to, a touch-sensitive surface (e.g., touch-sensitive display system  112 ). In some embodiments, at least one contact intensity sensor is located on the back of device  100 , opposite touch screen display  112 , which is located on the front of device  100 . 
     Device  100  may also include one or more proximity sensors  166 .  FIG. 1A  shows proximity sensor  166  coupled to peripherals interface  118 . Alternately, proximity sensor  166  may be coupled to input controller  160  in I/O subsystem  106 . Proximity sensor  166  may perform as described in U.S. patent application Ser. No. 11/241,839, “Proximity Detector In Handheld Device”; Ser. No. 11/240,788, “Proximity Detector In Handheld Device”; Ser. No. 11/620,702, “Using Ambient Light Sensor To Augment Proximity Sensor Output”; Ser. No. 11/586,862, “Automated Response To And Sensing Of User Activity In Portable Devices”; and Ser. No. 11/638,251, “Methods And Systems For Automatic Configuration Of Peripherals,” which are hereby incorporated by reference in their entirety. In some embodiments, the proximity sensor turns off and disables touch screen  112  when the multifunction device is placed near the user&#39;s ear (e.g., when the user is making a phone call). 
     Device  100  optionally also includes one or more tactile output generators  167 .  FIG. 1A  shows a tactile output generator coupled to haptic feedback controller  161  in I/O subsystem  106 . Tactile output generator  167  optionally includes one or more electroacoustic devices such as speakers or other audio components and/or electromechanical devices that convert energy into linear motion such as a motor, solenoid, electroactive polymer, piezoelectric actuator, electrostatic actuator, or other tactile output generating component (e.g., a component that converts electrical signals into tactile outputs on the device). Contact intensity sensor  165  receives tactile feedback generation instructions from haptic feedback module  133  and generates tactile outputs on device  100  that are capable of being sensed by a user of device  100 . In some embodiments, at least one tactile output generator is collocated with, or proximate to, a touch-sensitive surface (e.g., touch-sensitive display system  112 ) and, optionally, generates a tactile output by moving the touch-sensitive surface vertically (e.g., in/out of a surface of device  100 ) or laterally (e.g., back and forth in the same plane as a surface of device  100 ). In some embodiments, at least one tactile output generator sensor is located on the back of device  100 , opposite touch screen display  112 , which is located on the front of device  100 . 
     Device  100  may also include one or more accelerometers  168 .  FIG. 1A  shows accelerometer  168  coupled to peripherals interface  118 . Alternately, accelerometer  168  may be coupled to an input controller  160  in I/O subsystem  106 . Accelerometer  168  may perform as described in U.S. Patent Publication No. 20050190059, “Acceleration-based Theft Detection System for Portable Electronic Devices,” and U.S. Patent Publication No. 20060017692, “Methods And Apparatuses For Operating A Portable Device Based On An Accelerometer,” both of which are incorporated by reference herein in their entirety. In some embodiments, information is displayed on the touch screen display in a portrait view or a landscape view based on an analysis of data received from the one or more accelerometers. Device  100  optionally includes, in addition to accelerometer(s)  168 , a magnetometer (not shown) and a GPS (or GLONASS or other global navigation system) receiver (not shown) for obtaining information concerning the location and orientation (e.g., portrait or landscape) of device  100 . 
     In some embodiments, the software components stored in memory  102  include operating system  126 , communication module (or set of instructions)  128 , contact/motion module (or set of instructions)  130 , graphics module (or set of instructions)  132 , text input module (or set of instructions)  134 , Global Positioning System (GPS) module (or set of instructions)  135 , and applications (or sets of instructions)  136 . Furthermore, in some embodiments, memory  102  ( FIG. 1A ) or  370  ( FIG. 3 ) stores device/global internal state  157 , as shown in  FIGS. 1A and 3 . Device/global internal state  157  includes one or more of: active application state, indicating which applications, if any, are currently active; display state, indicating what applications, views or other information occupy various regions of touch screen display  112 ; sensor state, including information obtained from the device&#39;s various sensors and input control devices  116 ; and location information concerning the device&#39;s location and/or attitude. 
     Operating system  126  (e.g., DARWIN, RTXC, LINUX, UNIX, OS X, iOS, WINDOWS, or an embedded operating system such as VXWORKS) includes various software components and/or drivers for controlling and managing general system tasks (e.g., memory management, storage device control, power management, etc.) and facilitates communication between various hardware and software components. 
     Communication module  128  facilitates communication with other devices over one or more external ports  124  and also includes various software components for handling data received by RF circuitry  108  and/or external port  124 . External port  124  (e.g., Universal Serial Bus (USB), FIREWIRE, etc.) is adapted for coupling directly to other devices or indirectly over a network (e.g., the Internet, wireless LAN, etc.). In some embodiments, the external port is a multi-pin (e.g., 30-pin) connector that is the same as, or similar to and/or compatible with, the 30-pin connector used on iPod® (trademark of Apple Inc.) devices. 
     Contact/motion module  130  optionally detects contact with touch screen  112  (in conjunction with display controller  156 ) and other touch-sensitive devices (e.g., a touchpad or physical click wheel). Contact/motion module  130  includes various software components for performing various operations related to detection of contact, such as determining if contact has occurred (e.g., detecting a finger-down event), determining an intensity of the contact (e.g., the force or pressure of the contact or a substitute for the force or pressure of the contact), determining if there is movement of the contact and tracking the movement across the touch-sensitive surface (e.g., detecting one or more finger-dragging events), and determining if the contact has ceased (e.g., detecting a finger-up event or a break in contact). Contact/motion module  130  receives contact data from the touch-sensitive surface. Determining movement of the point of contact, which is represented by a series of contact data, optionally includes determining speed (magnitude), velocity (magnitude and direction), and/or an acceleration (a change in magnitude and/or direction) of the point of contact. These operations are, optionally, applied to single contacts (e.g., one finger contacts) or to multiple simultaneous contacts (e.g., “multitouch”/multiple finger contacts). In some embodiments, contact/motion module  130  and display controller  156  detect contact on a touchpad. 
     In some embodiments, contact/motion module  130  uses a set of one or more intensity thresholds to determine whether an operation has been performed by a user (e.g., to determine whether a user has “clicked” on an icon). In some embodiments, at least a subset of the intensity thresholds are determined in accordance with software parameters (e.g., the intensity thresholds are not determined by the activation thresholds of particular physical actuators and can be adjusted without changing the physical hardware of device  100 ). For example, a mouse “click” threshold of a trackpad or touch screen display can be set to any of a large range of predefined threshold values without changing the trackpad or touch screen display hardware. Additionally, in some implementations, a user of the device is provided with software settings for adjusting one or more of the set of intensity thresholds (e.g., by adjusting individual intensity thresholds and/or by adjusting a plurality of intensity thresholds at once with a system-level click “intensity” parameter). 
     Contact/motion module  130  optionally detects a gesture input by a user. Different gestures on the touch-sensitive surface have different contact patterns (e.g., different motions, timings, and/or intensities of detected contacts). Thus, a gesture is, optionally, detected by detecting a particular contact pattern. For example, detecting a finger tap gesture includes detecting a finger-down event followed by detecting a finger-up (liftoff) event at the same position (or substantially the same position) as the finger-down event (e.g., at the position of an icon). As another example, detecting a finger swipe gesture on the touch-sensitive surface includes detecting a finger-down event followed by detecting one or more finger-dragging events, and subsequently followed by detecting a finger-up (liftoff) event. 
     Graphics module  132  includes various known software components for rendering and displaying graphics on touch screen  112  or other display, including components for changing the visual impact (e.g., brightness, transparency, saturation, contrast, or other visual property) of graphics that are displayed. As used herein, the term “graphics” includes any object that can be displayed to a user, including, without limitation, text, web pages, icons (such as user-interface objects including soft keys), digital images, videos, animations, and the like. 
     In some embodiments, graphics module  132  stores data representing graphics to be used. Each graphic is, optionally, assigned a corresponding code. Graphics module  132  receives, from applications etc., one or more codes specifying graphics to be displayed along with, if necessary, coordinate data and other graphic property data, and then generates screen image data to output to display controller  156 . 
     Haptic feedback module  133  includes various software components for generating instructions used by tactile output generator(s)  167  to produce tactile outputs at one or more locations on device  100  in response to user interactions with device  100 . 
     Text input module  134 , which may be a component of graphics module  132 , provides soft keyboards for entering text in various applications (e.g., contacts  137 , e-mail  140 , IM  141 , browser  147 , and any other application that needs text input). 
     GPS module  135  determines the location of the device and provides this information for use in various applications (e.g., to telephone  138  for use in location-based dialing; to camera  143  as picture/video metadata; and to applications that provide location-based services such as weather widgets, local yellow page widgets, and map/navigation widgets). 
     Applications  136  may include the following modules (or sets of instructions), or a subset or superset thereof:
         Contacts module  137  (sometimes called an address book or contact list);   Telephone module  138 ;   Video conference module  139 ;   E-mail client module  140 ;   Instant messaging (IM) module  141 ;   Workout support module  142 ;   Camera module  143  for still and/or video images;   Image management module  144 ;   Video player module;   Music player module;   Browser module  147 ;   Calendar module  148 ;   Widget modules  149 , which may include one or more of: weather widget  149 - 1 , stocks widget  149 - 2 , calculator widget  149 - 3 , alarm clock widget  149 - 4 , dictionary widget  149 - 5 , and other widgets obtained by the user, as well as user-created widgets  149 - 6 ;   Widget creator module  150  for making user-created widgets  149 - 6 ;   Search module  151 ;   Video and music player module  152 , which merges video player module and music player module;   Notes module  153 ;   Map module  154 ; and/or   Online video module  155 .       

     Examples of other applications  136  that may be stored in memory  102  include other word processing applications, other image editing applications, drawing applications, presentation applications, JAVA-enabled applications, encryption, digital rights management, voice recognition, and voice replication. 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , contacts module  137  may be used to manage an address book or contact list (e.g., stored in application internal state  192  of contacts module  137  in memory  102  or memory  370 ), including: adding name(s) to the address book; deleting name(s) from the address book; associating telephone number(s), e-mail address(es), physical address(es) or other information with a name; associating an image with a name; categorizing and sorting names; providing telephone numbers or e-mail addresses to initiate and/or facilitate communications by telephone  138 , video conference module  139 , e-mail  140 , or IM  141 ; and so forth. 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , telephone module  138  may be used to enter a sequence of characters corresponding to a telephone number, access one or more telephone numbers in contacts module  137 , modify a telephone number that has been entered, dial a respective telephone number, conduct a conversation, and disconnect or hang up when the conversation is completed. As noted above, the wireless communication may use any of a plurality of communications standards, protocols, and technologies. 
     In conjunction with RF circuitry  108 , audio circuitry  110 , speaker  111 , microphone  113 , touch screen  112 , display controller  156 , optical sensor  164 , optical sensor controller  158 , contact/motion module  130 , graphics module  132 , text input module  134 , contacts module  137 , and telephone module  138 , video conference module  139  includes executable instructions to initiate, conduct, and terminate a video conference between a user and one or more other participants in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , e-mail client module  140  includes executable instructions to create, send, receive, and manage e-mail in response to user instructions. In conjunction with image management module  144 , e-mail client module  140  makes it very easy to create and send e-mails with still or video images taken with camera module  143 . 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , the instant messaging module  141  includes executable instructions to enter a sequence of characters corresponding to an instant message, to modify previously entered characters, to transmit a respective instant message (for example, using a Short Message Service (SMS) or Multimedia Message Service (MMS) protocol for telephony-based instant messages or using XMPP, SIMPLE, or IMPS for Internet-based instant messages), to receive instant messages, and to view received instant messages. In some embodiments, transmitted and/or received instant messages may include graphics, photos, audio files, video files and/or other attachments as are supported in an MMS and/or an Enhanced Messaging Service (EMS). As used herein, “instant messaging” refers to both telephony-based messages (e.g., messages sent using SMS or MMS) and Internet-based messages (e.g., messages sent using XMPP, SIMPLE, or IMPS). 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , GPS module  135 , map module  154 , and music player module, workout support module  142  includes executable instructions to create workouts (e.g., with time, distance, and/or calorie burning goals); communicate with workout sensors (sports devices); receive workout sensor data; calibrate sensors used to monitor a workout; select and play music for a workout; and display, store, and transmit workout data. 
     In conjunction with touch screen  112 , display controller  156 , optical sensor(s)  164 , optical sensor controller  158 , contact/motion module  130 , graphics module  132 , and image management module  144 , camera module  143  includes executable instructions to capture still images or video (including a video stream) and store them into memory  102 , modify characteristics of a still image or video, or delete a still image or video from memory  102 . 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , and camera module  143 , image management module  144  includes executable instructions to arrange, modify (e.g., edit), or otherwise manipulate, label, delete, present (e.g., in a digital slide show or album), and store still and/or video images. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , browser module  147  includes executable instructions to browse the Internet in accordance with user instructions, including searching, linking to, receiving, and displaying web pages or portions thereof, as well as attachments and other files linked to web pages. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , e-mail client module  140 , and browser module  147 , calendar module  148  includes executable instructions to create, display, modify, and store calendars and data associated with calendars (e.g., calendar entries, to-do lists, etc.) in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , and browser module  147 , widget modules  149  are mini-applications that may be downloaded and used by a user (e.g., weather widget  149 - 1 , stocks widget  149 - 2 , calculator widget  149 - 3 , alarm clock widget  149 - 4 , and dictionary widget  149 - 5 ) or created by the user (e.g., user-created widget  149 - 6 ). In some embodiments, a widget includes an HTML (Hypertext Markup Language) file, a CSS (Cascading Style Sheets) file, and a JavaScript file. In some embodiments, a widget includes an XML (Extensible Markup Language) file and a JAVASCRIPT file (e.g., YAHOO! Widgets). 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , and browser module  147 , the widget creator module  150  may be used by a user to create widgets (e.g., turning a user-specified portion of a web page into a widget). 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , search module  151  includes executable instructions to search for text, music, sound, image, video, and/or other files in memory  102  that match one or more search criteria (e.g., one or more user-specified search terms) in accordance with user instructions. 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , audio circuitry  110 , speaker  111 , RF circuitry  108 , and browser module  147 , video and music player module  152  includes executable instructions that allow the user to download and play back recorded music and other sound files stored in one or more file formats, such as MP3 or AAC files, and executable instructions to display, present, or otherwise play back videos (e.g., on touch screen  112  or on an external, connected display via external port  124 ). In some embodiments, device  100  optionally includes the functionality of an MP3 player, such as an iPod (trademark of Apple Inc.). 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , and text input module  134 , notes module  153  includes executable instructions to create and manage notes, to-do lists, and the like in accordance with user instructions. 
     In conjunction with RF circuitry  108 , touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , text input module  134 , GPS module  135 , and browser module  147 , map module  154  may be used to receive, display, modify, and store maps and data associated with maps (e.g., driving directions, data on stores and other points of interest at or near a particular location, and other location-based data) in accordance with user instructions. 
     In conjunction with touch screen  112 , display controller  156 , contact/motion module  130 , graphics module  132 , audio circuitry  110 , speaker  111 , RF circuitry  108 , text input module  134 , e-mail client module  140 , and browser module  147 , online video module  155  includes instructions that allow the user to access, browse, receive (e.g., by streaming and/or download), play back (e.g., on the touch screen or on an external, connected display via external port  124 ), send an e-mail with a link to a particular online video, and otherwise manage online videos in one or more file formats, such as H.264. In some embodiments, instant messaging module  141 , rather than e-mail client module  140 , is used to send a link to a particular online video. Additional description of the online video application can be found in U.S. Provisional Patent Application No. 60/936,562, “Portable Multifunction Device, Method, and Graphical User Interface for Playing Online Videos,” filed Jun. 20, 2007, and U.S. patent application Ser. No. 11/968,067, “Portable Multifunction Device, Method, and Graphical User Interface for Playing Online Videos,” filed Dec. 31, 2007, the contents of which are hereby incorporated by reference in their entirety. 
     Each of the above-identified modules and applications corresponds to a set of executable instructions for performing one or more functions described above and the methods described in this application (e.g., the computer-implemented methods and other information processing methods described herein). These modules (e.g., sets of instructions) need not be implemented as separate software programs, procedures, or modules, and thus various subsets of these modules may be combined or otherwise rearranged in various embodiments. For example, video player module may be combined with music player module into a single module (e.g., video and music player module  152 ,  FIG. 1A ). In some embodiments, memory  102  may store a subset of the modules and data structures identified above. Furthermore, memory  102  may store additional modules and data structures not described above. 
     In some embodiments, device  100  is a device where operation of a predefined set of functions on the device is performed exclusively through a touch screen and/or a touchpad. By using a touch screen and/or a touchpad as the primary input control device for operation of device  100 , the number of physical input control devices (such as push buttons, dials, and the like) on device  100  may be reduced. 
     The predefined set of functions that are performed exclusively through a touch screen and/or a touchpad optionally include navigation between user interfaces. In some embodiments, the touchpad, when touched by the user, navigates device  100  to a main, home, or root menu from any user interface that is displayed on device  100 . In such embodiments, a “menu button” is implemented using a touchpad. In some other embodiments, the menu button is a physical push button or other physical input control device instead of a touchpad. 
       FIG. 1B  is a block diagram illustrating exemplary components for event handling in accordance with some embodiments. In some embodiments, memory  102  ( FIG. 1A ) or  370  ( FIG. 3 ) includes event sorter  170  (e.g., in operating system  126 ) and a respective application  136 - 1  (e.g., any of the aforementioned applications  137 - 151 ,  155 ,  380 - 390 ). 
     Event sorter  170  receives event information and determines the application  136 - 1  and application view  191  of application  136 - 1  to which to deliver the event information. Event sorter  170  includes event monitor  171  and event dispatcher module  174 . In some embodiments, application  136 - 1  includes application internal state  192 , which indicates the current application view(s) displayed on touch-sensitive display  112  when the application is active or executing. In some embodiments, device/global internal state  157  is used by event sorter  170  to determine which application(s) is (are) currently active, and application internal state  192  is used by event sorter  170  to determine application views  191  to which to deliver event information. 
     In some embodiments, application internal state  192  includes additional information, such as one or more of: resume information to be used when application  136 - 1  resumes execution, user interface state information that indicates information being displayed or that is ready for display by application  136 - 1 , a state queue for enabling the user to go back to a prior state or view of application  136 - 1 , and a redo/undo queue of previous actions taken by the user. 
     Event monitor  171  receives event information from peripherals interface  118 . Event information includes information about a sub-event (e.g., a user touch on touch-sensitive display  112 , as part of a multi-touch gesture). Peripherals interface  118  transmits information it receives from I/O subsystem  106  or a sensor, such as proximity sensor  166 , accelerometer(s)  168 , and/or microphone  113  (through audio circuitry  110 ). Information that peripherals interface  118  receives from I/O subsystem  106  includes information from touch-sensitive display  112  or a touch-sensitive surface. 
     In some embodiments, event monitor  171  sends requests to the peripherals interface  118  at predetermined intervals. In response, peripherals interface  118  transmits event information. In other embodiments, peripherals interface  118  transmits event information only when there is a significant event (e.g., receiving an input above a predetermined noise threshold and/or for more than a predetermined duration). 
     In some embodiments, event sorter  170  also includes a hit view determination module  172  and/or an active event recognizer determination module  173 . 
     Hit view determination module  172  provides software procedures for determining where a sub-event has taken place within one or more views when touch-sensitive display  112  displays more than one view. Views are made up of controls and other elements that a user can see on the display. 
     Another aspect of the user interface associated with an application is a set of views, sometimes herein called application views or user interface windows, in which information is displayed and touch-based gestures occur. The application views (of a respective application) in which a touch is detected may correspond to programmatic levels within a programmatic or view hierarchy of the application. For example, the lowest level view in which a touch is detected may be called the hit view, and the set of events that are recognized as proper inputs may be determined based, at least in part, on the hit view of the initial touch that begins a touch-based gesture. 
     Hit view determination module  172  receives information related to sub-events of a touch-based gesture. When an application has multiple views organized in a hierarchy, hit view determination module  172  identifies a hit view as the lowest view in the hierarchy which should handle the sub-event. In most circumstances, the hit view is the lowest level view in which an initiating sub-event occurs (e.g., the first sub-event in the sequence of sub-events that form an event or potential event). Once the hit view is identified by the hit view determination module  172 , the hit view typically receives all sub-events related to the same touch or input source for which it was identified as the hit view. 
     Active event recognizer determination module  173  determines which view or views within a view hierarchy should receive a particular sequence of sub-events. In some embodiments, active event recognizer determination module  173  determines that only the hit view should receive a particular sequence of sub-events. In other embodiments, active event recognizer determination module  173  determines that all views that include the physical location of a sub-event are actively involved views, and therefore determines that all actively involved views should receive a particular sequence of sub-events. In other embodiments, even if touch sub-events were entirely confined to the area associated with one particular view, views higher in the hierarchy would still remain as actively involved views. 
     Event dispatcher module  174  dispatches the event information to an event recognizer (e.g., event recognizer  180 ). In embodiments including active event recognizer determination module  173 , event dispatcher module  174  delivers the event information to an event recognizer determined by active event recognizer determination module  173 . In some embodiments, event dispatcher module  174  stores in an event queue the event information, which is retrieved by a respective event receiver  182 . 
     In some embodiments, operating system  126  includes event sorter  170 . Alternatively, application  136 - 1  includes event sorter  170 . In yet other embodiments, event sorter  170  is a stand-alone module, or a part of another module stored in memory  102 , such as contact/motion module  130 . 
     In some embodiments, application  136 - 1  includes a plurality of event handlers  190  and one or more application views  191 , each of which includes instructions for handling touch events that occur within a respective view of the application&#39;s user interface. Each application view  191  of the application  136 - 1  includes one or more event recognizers  180 . Typically, a respective application view  191  includes a plurality of event recognizers  180 . In other embodiments, one or more of event recognizers  180  are part of a separate module, such as a user interface kit (not shown) or a higher level object from which application  136 - 1  inherits methods and other properties. In some embodiments, a respective event handler  190  includes one or more of: data updater  176 , object updater  177 , GUI updater  178 , and/or event data  179  received from event sorter  170 . Event handler  190  may utilize or call data updater  176 , object updater  177 , or GUI updater  178  to update the application internal state  192 . Alternatively, one or more of the application views  191  include one or more respective event handlers  190 . Also, in some embodiments, one or more of data updater  176 , object updater  177 , and GUI updater  178  are included in a respective application view  191 . 
     A respective event recognizer  180  receives event information (e.g., event data  179 ) from event sorter  170  and identifies an event from the event information. Event recognizer  180  includes event receiver  182  and event comparator  184 . In some embodiments, event recognizer  180  also includes at least a subset of: metadata  183 , and event delivery instructions  188  (which may include sub-event delivery instructions). 
     Event receiver  182  receives event information from event sorter  170 . The event information includes information about a sub-event, for example, a touch or a touch movement. Depending on the sub-event, the event information also includes additional information, such as location of the sub-event. When the sub-event concerns motion of a touch, the event information may also include speed and direction of the sub-event. In some embodiments, events include rotation of the device from one orientation to another (e.g., from a portrait orientation to a landscape orientation, or vice versa), and the event information includes corresponding information about the current orientation (also called device attitude) of the device. 
     Event comparator  184  compares the event information to predefined event or sub-event definitions and, based on the comparison, determines an event or sub-event, or determines or updates the state of an event or sub-event. In some embodiments, event comparator  184  includes event definitions  186 . Event definitions  186  contain definitions of events (e.g., predefined sequences of sub-events), for example, event  1  ( 187 - 1 ), event  2  ( 187 - 2 ), and others. In some embodiments, sub-events in an event ( 187 ) include, for example, touch begin, touch end, touch movement, touch cancellation, and multiple touching. In one example, the definition for event  1  ( 187 - 1 ) is a double tap on a displayed object. The double tap, for example, comprises a first touch (touch begin) on the displayed object for a predetermined phase, a first liftoff (touch end) for a predetermined phase, a second touch (touch begin) on the displayed object for a predetermined phase, and a second liftoff (touch end) for a predetermined phase. In another example, the definition for event  2  ( 187 - 2 ) is a dragging on a displayed object. The dragging, for example, comprises a touch (or contact) on the displayed object for a predetermined phase, a movement of the touch across touch-sensitive display  112 , and liftoff of the touch (touch end). In some embodiments, the event also includes information for one or more associated event handlers  190 . 
     In some embodiments, event definition  187  includes a definition of an event for a respective user-interface object. In some embodiments, event comparator  184  performs a hit test to determine which user-interface object is associated with a sub-event. For example, in an application view in which three user-interface objects are displayed on touch-sensitive display  112 , when a touch is detected on touch-sensitive display  112 , event comparator  184  performs a hit test to determine which of the three user-interface objects is associated with the touch (sub-event). If each displayed object is associated with a respective event handler  190 , the event comparator uses the result of the hit test to determine which event handler  190  should be activated. For example, event comparator  184  selects an event handler associated with the sub-event and the object triggering the hit test. 
     In some embodiments, the definition for a respective event ( 187 ) also includes delayed actions that delay delivery of the event information until after it has been determined whether the sequence of sub-events does or does not correspond to the event recognizer&#39;s event type. 
     When a respective event recognizer  180  determines that the series of sub-events do not match any of the events in event definitions  186 , the respective event recognizer  180  enters an event impossible, event failed, or event ended state, after which it disregards subsequent sub-events of the touch-based gesture. In this situation, other event recognizers, if any, that remain active for the hit view continue to track and process sub-events of an ongoing touch-based gesture. 
     In some embodiments, a respective event recognizer  180  includes metadata  183  with configurable properties, flags, and/or lists that indicate how the event delivery system should perform sub-event delivery to actively involved event recognizers. In some embodiments, metadata  183  includes configurable properties, flags, and/or lists that indicate how event recognizers may interact, or are enabled to interact, with one another. In some embodiments, metadata  183  includes configurable properties, flags, and/or lists that indicate whether sub-events are delivered to varying levels in the view or programmatic hierarchy. 
     In some embodiments, a respective event recognizer  180  activates event handler  190  associated with an event when one or more particular sub-events of an event are recognized. In some embodiments, a respective event recognizer  180  delivers event information associated with the event to event handler  190 . Activating an event handler  190  is distinct from sending (and deferred sending) sub-events to a respective hit view. In some embodiments, event recognizer  180  throws a flag associated with the recognized event, and event handler  190  associated with the flag catches the flag and performs a predefined process. 
     In some embodiments, event delivery instructions  188  include sub-event delivery instructions that deliver event information about a sub-event without activating an event handler. Instead, the sub-event delivery instructions deliver event information to event handlers associated with the series of sub-events or to actively involved views. Event handlers associated with the series of sub-events or with actively involved views receive the event information and perform a predetermined process. 
     In some embodiments, data updater  176  creates and updates data used in application  136 - 1 . For example, data updater  176  updates the telephone number used in contacts module  137 , or stores a video file used in video player module. In some embodiments, object updater  177  creates and updates objects used in application  136 - 1 . For example, object updater  177  creates a new user-interface object or updates the position of a user-interface object. GUI updater  178  updates the GUI. For example, GUI updater  178  prepares display information and sends it to graphics module  132  for display on a touch-sensitive display. 
     In some embodiments, event handler(s)  190  includes or has access to data updater  176 , object updater  177 , and GUI updater  178 . In some embodiments, data updater  176 , object updater  177 , and GUI updater  178  are included in a single module of a respective application  136 - 1  or application view  191 . In other embodiments, they are included in two or more software modules. 
     It shall be understood that the foregoing discussion regarding event handling of user touches on touch-sensitive displays also applies to other forms of user inputs to operate multifunction devices  100  with input devices, not all of which are initiated on touch screens. For example, mouse movement and mouse button presses, optionally coordinated with single or multiple keyboard presses or holds; contact movements such as taps, drags, scrolls, etc. on touchpads; pen stylus inputs; movement of the device; oral instructions; detected eye movements; biometric inputs; and/or any combination thereof are optionally utilized as inputs corresponding to sub-events which define an event to be recognized. 
       FIG. 2  illustrates a portable multifunction device  100  having a touch screen  112  in accordance with some embodiments. The touch screen optionally displays one or more graphics within user interface (UI)  200 . In this embodiment, as well as others described below, a user is enabled to select one or more of the graphics by making a gesture on the graphics, for example, with one or more fingers  202  (not drawn to scale in the figure) or one or more styluses  203  (not drawn to scale in the figure). In some embodiments, selection of one or more graphics occurs when the user breaks contact with the one or more graphics. In some embodiments, the gesture optionally includes one or more taps, one or more swipes (from left to right, right to left, upward and/or downward), and/or a rolling of a finger (from right to left, left to right, upward and/or downward) that has made contact with device  100 . In some implementations or circumstances, inadvertent contact with a graphic does not select the graphic. For example, a swipe gesture that sweeps over an application icon optionally does not select the corresponding application when the gesture corresponding to selection is a tap. 
     Device  100  may also include one or more physical buttons, such as “home” or menu button  204 . As described previously, menu button  204  may be used to navigate to any application  136  in a set of applications that may be executed on device  100 . Alternatively, in some embodiments, the menu button is implemented as a soft key in a GUI displayed on touch screen  112 . 
     In one embodiment, device  100  includes touch screen  112 , menu button  204 , push button  206  for powering the device on/off and locking the device, volume adjustment button(s)  208 , subscriber identity module (SIM) card slot  210 , headset jack  212 , and docking/charging external port  124 . Push button  206  is, optionally, used to turn the power on/off on the device by depressing the button and holding the button in the depressed state for a predefined time interval; to lock the device by depressing the button and releasing the button before the predefined time interval has elapsed; and/or to unlock the device or initiate an unlock process. In an alternative embodiment, device  100  also accepts verbal input for activation or deactivation of some functions through microphone  113 . Device  100  also, optionally, includes one or more contact intensity sensors  165  for detecting intensity of contacts on touch screen  112  and/or one or more tactile output generators  167  for generating tactile outputs for a user of device  100 . 
       FIG. 3  is a block diagram of an exemplary multifunction device with a display and a touch-sensitive surface in accordance with some embodiments. Device  300  need not be portable. In some embodiments, device  300  is a laptop computer, a desktop computer, a tablet computer, a multimedia player device, a navigation device, an educational device (such as a child&#39;s learning toy), a gaming system, or a control device (e.g., a home or industrial controller). Device  300  typically includes one or more processing units (CPUs)  310 , one or more network or other communications interfaces  360 , memory  370 , and one or more communication buses  320  for interconnecting these components. Communication buses  320  optionally include circuitry (sometimes called a chipset) that interconnects and controls communications between system components. Device  300  includes input/output (I/O) interface  330  comprising display  340 , which is typically a touch screen display. I/O interface  330  also optionally includes a keyboard and/or mouse (or other pointing device)  350  and touchpad  355 , tactile output generator  357  for generating tactile outputs on device  300  (e.g., similar to tactile output generator(s)  167  described above with reference to  FIG. 1A ), sensors  359  (e.g., optical, acceleration, proximity, touch-sensitive, and/or contact intensity sensors similar to contact intensity sensor(s)  165  described above with reference to  FIG. 1A ). Memory  370  includes high-speed random access memory, such as DRAM, SRAM, DDR RAM, or other random access solid state memory devices; and optionally includes non-volatile memory, such as one or more magnetic disk storage devices, optical disk storage devices, flash memory devices, or other non-volatile solid state storage devices. Memory  370  optionally includes one or more storage devices remotely located from CPU(s)  310 . In some embodiments, memory  370  stores programs, modules, and data structures analogous to the programs, modules, and data structures stored in memory  102  of portable multifunction device  100  ( FIG. 1A ), or a subset thereof. Furthermore, memory  370  optionally stores additional programs, modules, and data structures not present in memory  102  of portable multifunction device  100 . For example, memory  370  of device  300  optionally stores drawing module  380 , presentation module  382 , word processing module  384 , website creation module  386 , disk authoring module  388 , and/or spreadsheet module  390 , while memory  102  of portable multifunction device  100  ( FIG. 1A ) optionally does not store these modules. 
     Each of the above-identified elements in  FIG. 3  may be stored in one or more of the previously mentioned memory devices. Each of the above-identified modules corresponds to a set of instructions for performing a function described above. The above-identified modules or programs (e.g., sets of instructions) need not be implemented as separate software programs, procedures, or modules, and thus various subsets of these modules may be combined or otherwise rearranged in various embodiments. In some embodiments, memory  370  may store a subset of the modules and data structures identified above. Furthermore, memory  370  may store additional modules and data structures not described above. 
     Attention is now directed towards embodiments of user interfaces that may be implemented on, for example, portable multifunction device  100 . 
       FIG. 4A  illustrates an exemplary user interface for a menu of applications on portable multifunction device  100  in accordance with some embodiments. Similar user interfaces may be implemented on device  300 . In some embodiments, user interface  400  includes the following elements, or a subset or superset thereof:
         Signal strength indicator(s)  402  for wireless communication(s), such as cellular and Wi-Fi signals;   Time  404 ;   Bluetooth indicator  405 ;   Battery status indicator  406 ;   Tray  408  with icons for frequently used applications, such as:
           Icon  416  for telephone module  138 , labeled “Phone,” which optionally includes an indicator  414  of the number of missed calls or voicemail messages;   Icon  418  for e-mail client module  140 , labeled “Mail,” which optionally includes an indicator  410  of the number of unread e-mails;   Icon  420  for browser module  147 , labeled “Browser;” and   Icon  422  for video and music player module  152 , also referred to as iPod (trademark of Apple Inc.) module  152 , labeled “iPod;” and   
           Icons for other applications, such as:
           Icon  424  for IM module  141 , labeled “Messages;”   Icon  426  for calendar module  148 , labeled “Calendar;”   Icon  428  for image management module  144 , labeled “Photos;”   Icon  430  for camera module  143 , labeled “Camera;”   Icon  432  for online video module  155 , labeled “Online Video;”   Icon  434  for stocks widget  149 - 2 , labeled “Stocks;”   Icon  436  for map module  154 , labeled “Maps;”   Icon  438  for weather widget  149 - 1 , labeled “Weather;”   Icon  440  for alarm clock widget  149 - 4 , labeled “Clock;”   Icon  442  for workout support module  142 , labeled “Workout Support;”   Icon  444  for notes module  153 , labeled “Notes;” and   Icon  446  for a settings application or module, labeled “Settings,” which provides access to settings for device  100  and its various applications  136 .   
               

     It should be noted that the icon labels illustrated in  FIG. 4A  are merely exemplary. For example, icon  422  for video and music player module  152  may optionally be labeled “Music” or “Music Player.” Other labels are, optionally, used for various application icons. In some embodiments, a label for a respective application icon includes a name of an application corresponding to the respective application icon. In some embodiments, a label for a particular application icon is distinct from a name of an application corresponding to the particular application icon. 
       FIG. 4B  illustrates an exemplary user interface on a device (e.g., device  300 ,  FIG. 3 ) with a touch-sensitive surface  451  (e.g., a tablet or touchpad  355 ,  FIG. 3 ) that is separate from the display  450  (e.g., touch screen display  112 ). Device  300  also, optionally, includes one or more contact intensity sensors (e.g., one or more of sensors  357 ) for detecting intensity of contacts on touch-sensitive surface  451  and/or one or more tactile output generators  359  for generating tactile outputs for a user of device  300 . 
     Although some of the examples which follow will be given with reference to inputs on touch screen display  112  (where the touch-sensitive surface and the display are combined), in some embodiments, the device detects inputs on a touch-sensitive surface that is separate from the display, as shown in  FIG. 4B . In some embodiments, the touch-sensitive surface (e.g.,  451  in  FIG. 4B ) has a primary axis (e.g.,  452  in  FIG. 4B ) that corresponds to a primary axis (e.g.,  453  in  FIG. 4B ) on the display (e.g.,  450 ). In accordance with these embodiments, the device detects contacts (e.g.,  460  and  462  in  FIG. 4B ) with the touch-sensitive surface  451  at locations that correspond to respective locations on the display (e.g., in  FIG. 4B, 460  corresponds to  468  and  462  corresponds to  470 ). In this way, user inputs (e.g., contacts  460  and  462 , and movements thereof) detected by the device on the touch-sensitive surface (e.g.,  451  in  FIG. 4B ) are used by the device to manipulate the user interface on the display (e.g.,  450  in  FIG. 4B ) of the multifunction device when the touch-sensitive surface is separate from the display. It should be understood that similar methods are, optionally, used for other user interfaces described herein. 
     Additionally, while the following examples are given primarily with reference to finger inputs (e.g., finger contacts, finger tap gestures, finger swipe gestures), it should be understood that, in some embodiments, one or more of the finger inputs are replaced with input from another input device (e.g., a mouse-based input or stylus input). For example, a swipe gesture is, optionally, replaced with a mouse click (e.g., instead of a contact) followed by movement of the cursor along the path of the swipe (e.g., instead of movement of the contact). As another example, a tap gesture is, optionally, replaced with a mouse click while the cursor is located over the location of the tap gesture (e.g., instead of detection of the contact followed by ceasing to detect the contact). Similarly, when multiple user inputs are simultaneously detected, it should be understood that multiple computer mice are, optionally, used simultaneously, or a mouse and finger contacts are, optionally, used simultaneously. 
       FIG. 5A  illustrates exemplary personal electronic device  500 . Device  500  includes body  502 . In some embodiments, device  500  can include some or all of the features described with respect to devices  100  and  300  (e.g.,  FIGS. 1A-4B ). In some embodiments, device  500  has touch-sensitive display screen  504 , hereafter touch screen  504 . Alternatively, or in addition to touch screen  504 , device  500  has a display and a touch-sensitive surface. As with devices  100  and  300 , in some embodiments, touch screen  504  (or the touch-sensitive surface) may have one or more intensity sensors for detecting intensity of contacts (e.g., touches) being applied. The one or more intensity sensors of touch screen  504  (or the touch-sensitive surface) can provide output data that represents the intensity of touches. The user interface of device  500  can respond to touches based on their intensity, meaning that touches of different intensities can invoke different user interface operations on device  500 . 
     Techniques for detecting and processing touch intensity may be found, for example, in related applications: International Patent Application Serial No. PCT/US2013/040061, titled “Device, Method, and Graphical User Interface for Displaying User Interface Objects Corresponding to an Application,” filed May 8, 2013, and International Patent Application Serial No. PCT/US2013/069483, titled “Device, Method, and Graphical User Interface for Transitioning Between Touch Input to Display Output Relationships,” filed Nov. 11, 2013, each of which is hereby incorporated by reference in their entirety. 
     In some embodiments, device  500  has one or more input mechanisms  506  and  508 . Input mechanisms  506  and  508 , if included, can be physical. Examples of physical input mechanisms include push buttons and rotatable mechanisms. In some embodiments, device  500  has one or more attachment mechanisms. Such attachment mechanisms, if included, can permit attachment of device  500  with, for example, hats, eyewear, earrings, necklaces, shirts, jackets, bracelets, watch straps, chains, trousers, belts, shoes, purses, backpacks, and so forth. These attachment mechanisms may permit device  500  to be worn by a user. 
       FIG. 5B  depicts exemplary personal electronic device  500 . In some embodiments, device  500  can include some or all of the components described with respect to  FIGS. 1A, 1B , and  3 . Device  500  has bus  512  that operatively couples I/O section  514  with one or more computer processors  516  and memory  518 . I/O section  514  can be connected to display  504 , which can have touch-sensitive component  522  and, optionally, touch-intensity sensitive component  524 . In addition, I/O section  514  can be connected with communication unit  530  for receiving application and operating system data, using Wi-Fi, Bluetooth, near field communication (NFC), cellular, and/or other wireless communication techniques. Device  500  can include input mechanisms  506  and/or  508 . Input mechanism  506  may be a rotatable input device or a depressible and rotatable input device, for example. Input mechanism  508  may be a button, in some examples. 
     Input mechanism  508  may be a microphone, in some examples. Personal electronic device  500  can include various sensors, such as GPS sensor  532 , accelerometer  534 , directional sensor  540  (e.g., compass), gyroscope  536 , motion sensor  538 , and/or a combination thereof, all of which can be operatively connected to I/O section  514 . 
     Memory  518  of personal electronic device  500  can be a non-transitory computer-readable storage medium, for storing computer-executable instructions, which, when executed by one or more computer processors  516 , for example, can cause the computer processors to perform the techniques described above, including processes  1600 - 2200  ( FIGS. 16-22 ). The computer-executable instructions can also be stored and/or transported within any non-transitory computer-readable storage medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For purposes of this document, a “non-transitory computer-readable storage medium” can be any medium that can tangibly contain or store computer-executable instructions for use by or in connection with the instruction execution system, apparatus, or device. The non-transitory computer-readable storage medium can include, but is not limited to, magnetic, optical, and/or semiconductor storages. Examples of such storage include magnetic disks, optical discs based on CD, DVD, or Blu-ray technologies, as well as persistent solid-state memory such as flash, solid-state drives, and the like. Personal electronic device  500  is not limited to the components and configuration of  FIG. 5B , but can include other or additional components in multiple configurations. 
     As used here, the term “affordance” refers to a user-interactive graphical user interface object that may be displayed on the display screen of devices  100 ,  300 , and/or  500  ( FIGS. 1, 3, and 5 ). For example, an image (e.g., icon), a button, and text (e.g., hyperlink) may each constitute an affordance. 
     As used herein, the term “focus selector” refers to an input element that indicates a current part of a user interface with which a user is interacting. In some implementations that include a cursor or other location marker, the cursor acts as a “focus selector” so that when an input (e.g., a press input) is detected on a touch-sensitive surface (e.g., touchpad  355  in  FIG. 3  or touch-sensitive surface  451  in  FIG. 4B ) while the cursor is over a particular user interface element (e.g., a button, window, slider or other user interface element), the particular user interface element is adjusted in accordance with the detected input. In some implementations that include a touch screen display (e.g., touch-sensitive display system  112  in  FIG. 1A  or touch screen  112  in  FIG. 4A ) that enables direct interaction with user interface elements on the touch screen display, a detected contact on the touch screen acts as a “focus selector” so that when an input (e.g., a press input by the contact) is detected on the touch screen display at a location of a particular user interface element (e.g., a button, window, slider, or other user interface element), the particular user interface element is adjusted in accordance with the detected input. In some implementations, focus is moved from one region of a user interface to another region of the user interface without corresponding movement of a cursor or movement of a contact on a touch screen display (e.g., by using a tab key or arrow keys to move focus from one button to another button); in these implementations, the focus selector moves in accordance with movement of focus between different regions of the user interface. Without regard to the specific form taken by the focus selector, the focus selector is generally the user interface element (or contact on a touch screen display) that is controlled by the user so as to communicate the user&#39;s intended interaction with the user interface (e.g., by indicating, to the device, the element of the user interface with which the user is intending to interact). For example, the location of a focus selector (e.g., a cursor, a contact, or a selection box) over a respective button while a press input is detected on the touch-sensitive surface (e.g., a touchpad or touch screen) will indicate that the user is intending to activate the respective button (as opposed to other user interface elements shown on a display of the device). 
     As used in the specification and claims, the term “characteristic intensity” of a contact refers to a characteristic of the contact based on one or more intensities of the contact. In some embodiments, the characteristic intensity is based on multiple intensity samples. The characteristic intensity is, optionally, based on a predefined number of intensity samples, or a set of intensity samples collected during a predetermined time period (e.g., 0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10 seconds) relative to a predefined event (e.g., after detecting the contact, prior to detecting liftoff of the contact, before or after detecting a start of movement of the contact, prior to detecting an end of the contact, before or after detecting an increase in intensity of the contact, and/or before or after detecting a decrease in intensity of the contact). A characteristic intensity of a contact is, optionally based on one or more of: a maximum value of the intensities of the contact, a mean value of the intensities of the contact, an average value of the intensities of the contact, a top 10 percentile value of the intensities of the contact, a value at the half maximum of the intensities of the contact, a value at the 90 percent maximum of the intensities of the contact, or the like. In some embodiments, the duration of the contact is used in determining the characteristic intensity (e.g., when the characteristic intensity is an average of the intensity of the contact over time). In some embodiments, the characteristic intensity is compared to a set of one or more intensity thresholds to determine whether an operation has been performed by a user. For example, the set of one or more intensity thresholds may include a first intensity threshold and a second intensity threshold. In this example, a contact with a characteristic intensity that does not exceed the first threshold results in a first operation, a contact with a characteristic intensity that exceeds the first intensity threshold and does not exceed the second intensity threshold results in a second operation, and a contact with a characteristic intensity that exceeds the second threshold results in a third operation. In some embodiments, a comparison between the characteristic intensity and one or more thresholds is used to determine whether or not to perform one or more operations (e.g., whether to perform a respective operation or forgo performing the respective operation) rather than being used to determine whether to perform a first operation or a second operation. 
     In some embodiments, a portion of a gesture is identified for purposes of determining a characteristic intensity. For example, a touch-sensitive surface may receive a continuous swipe contact transitioning from a start location and reaching an end location, at which point the intensity of the contact increases. In this example, the characteristic intensity of the contact at the end location may be based on only a portion of the continuous swipe contact, and not the entire swipe contact (e.g., only the portion of the swipe contact at the end location). In some embodiments, a smoothing algorithm may be applied to the intensities of the swipe contact prior to determining the characteristic intensity of the contact. For example, the smoothing algorithm optionally includes one or more of: an unweighted sliding-average smoothing algorithm, a triangular smoothing algorithm, a median filter smoothing algorithm, and/or an exponential smoothing algorithm. In some circumstances, these smoothing algorithms eliminate narrow spikes or dips in the intensities of the swipe contact for purposes of determining a characteristic intensity. 
     The intensity of a contact on the touch-sensitive surface may be characterized relative to one or more intensity thresholds, such as a contact-detection intensity threshold, a light press intensity threshold, a deep press intensity threshold, and/or one or more other intensity thresholds. In some embodiments, the light press intensity threshold corresponds to an intensity at which the device will perform operations typically associated with clicking a button of a physical mouse or a trackpad. In some embodiments, the deep press intensity threshold corresponds to an intensity at which the device will perform operations that are different from operations typically associated with clicking a button of a physical mouse or a trackpad. In some embodiments, when a contact is detected with a characteristic intensity below the light press intensity threshold (e.g., and above a nominal contact-detection intensity threshold below which the contact is no longer detected), the device will move a focus selector in accordance with movement of the contact on the touch-sensitive surface without performing an operation associated with the light press intensity threshold or the deep press intensity threshold. Generally, unless otherwise stated, these intensity thresholds are consistent between different sets of user interface figures. 
     An increase of characteristic intensity of the contact from an intensity below the light press intensity threshold to an intensity between the light press intensity threshold and the deep press intensity threshold is sometimes referred to as a “light press” input. An increase of characteristic intensity of the contact from an intensity below the deep press intensity threshold to an intensity above the deep press intensity threshold is sometimes referred to as a “deep press” input. An increase of characteristic intensity of the contact from an intensity below the contact-detection intensity threshold to an intensity between the contact-detection intensity threshold and the light press intensity threshold is sometimes referred to as detecting the contact on the touch-surface. A decrease of characteristic intensity of the contact from an intensity above the contact-detection intensity threshold to an intensity below the contact-detection intensity threshold is sometimes referred to as detecting liftoff of the contact from the touch-surface. In some embodiments, the contact-detection intensity threshold is zero. In some embodiments, the contact-detection intensity threshold is greater than zero. 
     In some embodiments described herein, one or more operations are performed in response to detecting a gesture that includes a respective press input or in response to detecting the respective press input performed with a respective contact (or a plurality of contacts), where the respective press input is detected based at least in part on detecting an increase in intensity of the contact (or plurality of contacts) above a press-input intensity threshold. In some embodiments, the respective operation is performed in response to detecting the increase in intensity of the respective contact above the press-input intensity threshold (e.g., a “down stroke” of the respective press input). In some embodiments, the press input includes an increase in intensity of the respective contact above the press-input intensity threshold and a subsequent decrease in intensity of the contact below the press-input intensity threshold, and the respective operation is performed in response to detecting the subsequent decrease in intensity of the respective contact below the press-input threshold (e.g., an “up stroke” of the respective press input). 
     In some embodiments, the device employs intensity hysteresis to avoid accidental inputs sometimes termed “jitter,” where the device defines or selects a hysteresis intensity threshold with a predefined relationship to the press-input intensity threshold (e.g., the hysteresis intensity threshold is X intensity units lower than the press-input intensity threshold or the hysteresis intensity threshold is 75%, 90%, or some reasonable proportion of the press-input intensity threshold). Thus, in some embodiments, the press input includes an increase in intensity of the respective contact above the press-input intensity threshold and a subsequent decrease in intensity of the contact below the hysteresis intensity threshold that corresponds to the press-input intensity threshold, and the respective operation is performed in response to detecting the subsequent decrease in intensity of the respective contact below the hysteresis intensity threshold (e.g., an “up stroke” of the respective press input). Similarly, in some embodiments, the press input is detected only when the device detects an increase in intensity of the contact from an intensity at or below the hysteresis intensity threshold to an intensity at or above the press-input intensity threshold and, optionally, a subsequent decrease in intensity of the contact to an intensity at or below the hysteresis intensity, and the respective operation is performed in response to detecting the press input (e.g., the increase in intensity of the contact or the decrease in intensity of the contact, depending on the circumstances). 
     For ease of explanation, the descriptions of operations performed in response to a press input associated with a press-input intensity threshold or in response to a gesture including the press input are, optionally, triggered in response to detecting either: an increase in intensity of a contact above the press-input intensity threshold, an increase in intensity of a contact from an intensity below the hysteresis intensity threshold to an intensity above the press-input intensity threshold, a decrease in intensity of the contact below the press-input intensity threshold, and/or a decrease in intensity of the contact below the hysteresis intensity threshold corresponding to the press-input intensity threshold. Additionally, in examples where an operation is described as being performed in response to detecting a decrease in intensity of a contact below the press-input intensity threshold, the operation is, optionally, performed in response to detecting a decrease in intensity of the contact below a hysteresis intensity threshold corresponding to, and lower than, the press-input intensity threshold. 
     Attention is now directed to  FIG. 6 , which depicts an exemplary hexagonal grid  600  according to some embodiments. Hexagonal grid  600  includes a two-dimensional array of discrete locations represented by dots. With the exception of the locations near the edges of grid  600 , each location is surrounded by six adjacent locations. For example, location E is adjacent to locations B, C, D, F, G, and H. The six locations adjacent to any particular location define a hexagon. The locations are arranged such that the hexagons defined by the adjacent locations of any two locations are congruent. 
     A location may be defined as the origin of the hexagonal grid. In grid  600 , location O is defined as the origin. An integer rank value may be defined for each location based on its location in relation to the origin O. The rank of a location is defined as the minimum number of discrete steps along locations on grid  600  that can be taken to move from the origin to the location. A discrete step is a step from a location on the hexagonal grid to an adjacent location on the hexagonal grid. For example, it is possible to move from the origin O to location B in three steps via points A and C (i.e., O-A-C-B); however, it is also possible to reach point B in only two steps via location A (e.g., by going directly to B from A). Location B cannot be reached in fewer than two steps along a path of adjacent points. Accordingly, location B has a rank value of two. As shown in  FIG. 6 , locations having the same rank form hexagonal “shells” around the origin O. While rank is generally described herein as increasing with distance from the origin, it is understood that the reverse could be true. For example, the closest “shell” could be assigned a rank of 100 with successive “shells” being assigned successively lower ranks (e.g., 99, 98, 97). 
     Attention is now directed to user interfaces and associated processes that may be implemented on a multifunction device with a display and a touch-sensitive surface, such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A , and/or  5 A), to reconfigure user interface objects, including user interface objects arranged in a hexagonal pattern. 
       FIG. 7  illustrates exemplary electronic device  700 . Device  700  may be device  500  ( FIG. 5A ) in some embodiments. In the illustrated example, device  700  is a wearable electronic device. In some embodiments, device  700  may be a smartphone. 
     As shown, device  700  may display user interface screen  710  having a plurality of user interface objects arranged in a configuration  720 . Each user interface object is positioned at (e.g., occupies) a location on a hexagonal grid. On user interface screen  710 , the user interface objects are displayed as circular icons centered on their respective grid locations. Icons may be affordances that correspond to applications executable on device  700  (e.g., a messaging application), meaning device  700  may launch a corresponding application in response to a user&#39;s selection of an icon. 
     It should be recognized that the icons may have various sizes and shapes (e.g., hexagon, square, triangle, rounded rectangle, star, etc.). The icons also do not have to all be the same shape and do not have to be the same size as the grid spacing. Furthermore, the grid may be configured in various ways. For example, the grid may be elongated, skewed, and/or oriented in a different direction (e.g., rotated 60 degrees so that one of the axes is vertical). Also, in some embodiments, the hexagonal grid (e.g., the grid location indicators and axes) is not displayed. 
     Device  700  may operate in a user interface reconfiguration mode in which the user interface displayed on the display may be reconfigured. While in the user interface reconfiguration mode, displayed user interface objects (e.g., application icons) may be moved, deleted, added, changed, or the like. Exemplary methods for entering and exiting a user interface reconfiguration mode are described below. 
       FIG. 8A  illustrates an exemplary user interface screen  810  that may be displayed on the display of device  700 . Screen  810  includes a plurality of application icons  820  arranged in a hexagonal configuration. 
     In one embodiment, device  700  may include a touch-sensitive display. Device  700  may detect an input on the touch-sensitive display, such as touch  805 . The touch may be detected at a position corresponding to one of the plurality of displayed application icons. In  FIG. 8A , touch  805  is located at a position corresponding to icon K. In response to the touch, device  700  may be set to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display. Optionally, device  700  may determine whether the duration of the touch  805  exceeds a predetermined threshold and be set to operate in the user interface reconfiguration mode in accordance with a determination that the duration of the touch  805  exceeds the predetermined threshold. Alternatively, in accordance with a determination that the duration of the touch  805  does not exceed the predetermined threshold, device  700  may launch an application corresponding to the touched icon (e.g., Application K). 
     In some embodiments, the touch-sensitive display may comprise one or more sensors to detect the intensity of contacts with the touch-sensitive display. Device  700  may determine whether the touch  805  has a characteristic intensity above a threshold intensity and may operate in the user interface reconfiguration mode in accordance with a determination that the characteristic intensity is above the threshold intensity. Alternatively, in accordance with a determination that the characteristic intensity is below the threshold intensity, device  700  may launch an application corresponding to the touched icon (e.g., Application K). 
     In some embodiments, device  700  may display an indication that the device is operating in the user interface configuration mode (i.e., that the displayed user interface may be reconfigured). The indication may include causing the display of one or more user interface objects (e.g., an application icon) to fluctuate in size. 
       FIGS. 8A and 8B  illustrate an exemplary implementation of user interface objects fluctuating in size.  FIG. 8A  shows the icons  820  displayed at a first size.  FIG. 8B  shows the icons  820  displayed at a second size smaller than the first size. In response to touch  805  (e.g., when device  700  is set to or is operating in the user interface configuration mode), device  700  may transition the display of the icons from the first size to the second size. The display of the icons may be further transitioned back to the first size such that icons fluctuate between the first size and the second size. The icons may continue to fluctuate in size until device  700  exits the user interface reconfiguration mode. Optionally, the fluctuation in size may be animated to simulate that the icons are pulsing. 
     In some embodiments, the fluctuation may include an oscillation of the size of the icons  820  about an average size (e.g., the average of the first and second sizes). Optionally, the center of the icons may remain fixed at a position on the display as they fluctuate. 
     In another exemplary implementation, device  700  may indicate that it is operating in the user interface reconfiguration mode by causing the display of the icons to jiggle or oscillate about a point. For example, device  700  may cause the icons to move as described in U.S. Pat. No. 8,423,911, entitled “Device, Method, and Graphical User Interface for Managing Folders,” issued Apr. 16, 2013. 
     Attention is now directed to techniques and user interfaces that allow a user to cause a user interface object to be removed. In some embodiments, when device  700  is operating in the user interface reconfiguration mode, an application icon may include a deletion region indicating that the icon can be deleted (i.e., that the icon is deletable).  FIG. 8C  depicts an exemplary deletion region  830  on icon A. 
     While in the user interface reconfiguration mode, device  700  may detect an input corresponding to a selection of a deletion region, and in response, remove the display of the respective icon. For example,  FIG. 8C  depicts a touch  815  representing a selection of the deletion region of icon J. In response to touch  815 , device  700  may remove the display of icon J. Alternatively, in response to touch  815 , device  700  may display a deletion confirmation affordance.  FIG. 8D  depicts an exemplary deletion confirmation affordance  840  that may be displayed on screen  810  in response touch  815 . In response to a selection of “Yes”, device  700  may remove the display of icon J. Device  700  may also cause the actual application corresponding to icon J to become unavailable (e.g., remove the application from memory). In response to a selection of “No”, device  700  may remove the deletion confirmation affordance  840  from screen  810 . 
     Yet another technique for removing an icon may include determining the intensity of a touch input. The touch-sensitive display of device  700  may comprise one or more sensors to detect the intensity of contacts with the touch-sensitive display. Device  700  may determine whether a touch representing a selection of an icon (e.g., touch  805  or  815 ) has a characteristic intensity above a threshold intensity. In accordance with a determination that the characteristic intensity is above the threshold intensity, device  700  may remove the display of the selected icon. Alternatively, in accordance with a determination that the characteristic intensity is not above the threshold intensity, device  700  may take no action or launch an application corresponding to the icon at the position of the touch. 
     In some embodiments, device  700  may detect a touch, determine the intensity, and remove the selected icon while operating in the user interface configuration mode. Optionally, providing a touch with sufficient intensity may allow a user to remove an icon without having to first enter the user interface reconfiguration mode. That is, device  700  may detect a touch, determine the intensity, and remove the selected icon while operating in a normal operation mode in which the user interface is not otherwise reconfigurable. 
     Device  700  may also provide a means for a user to exit the user interface reconfiguration mode. For example, while in the user interface reconfiguration mode, device  700  may detect an input, and in response, exit the user interface reconfiguration mode. Device  700  may transition from the user interface reconfiguration mode to a normal operation mode. In an exemplary normal operation mode, icons cannot be reconfigured and selection of an icon may cause device  700  to launch the corresponding application program. 
     Attention is now directed to techniques for reconfiguring a two-dimensional arrangement of user interface objects displayed on the display of device  700 . Particular attention is directed to reconfiguring icons that occupy locations on a hexagonal grid, such as grid  600  described above. As part of reconfiguring the user interface, icons may be deleted, moved, added, etc. 
       FIG. 9A  shows an exemplary user interface screen  910  displayed on the display of device  700 . Screen  910  includes a plurality of user interface objects arranged in an initial configuration  920  in which the application icons occupy locations on a hexagonal grid. The grid itself is not displayed. In the illustrated example, the user interface objects are application icons. The plurality of application icons may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the application icons on the display. 
     In  FIG. 9A , device  700  receives an input in the form of touch  905  at icon  921 . Touch  905  may represent a request to delete icon  921 . Device  700  may detect touch gesture  905  and, in response, remove the display of application icon  921 . Removing icon  921  results in an unoccupied location on the hexagonal grid, as shown by the configuration  930  in  FIG. 9B . 
     In response to detecting touch gesture  905 , device  700  may also determine a new configuration for the remaining icons (i.e., a configuration without application icon  921 ). 
     The new configuration may be determined to compact the remaining icons such that the icons, as a whole, are closer to the origin compared to configuration  930 . Stated another way, a sum of the distances of the icons from the origin O in the initial configuration  920 , minus the distance from the origin of the removed icon  921  in the initial configuration  920 , is greater than a sum of the distances from the origin of the application icons in the new configuration. In some cases, the icons may be compacted by reducing the rank (as defined above) of one or more icons. In some embodiments, the unoccupied location is filled by moving an adjacent icon in a higher rank that results in the greatest reduction in the sum distance. 
     The new configuration may also be determined such that there are no interior unoccupied locations in the configuration. As used herein, an interior unoccupied location refers to an unoccupied location on the hexagonal grid that is adjacent to six application icons (i.e., an unoccupied location that is entirely surrounded by other icons). The space resulting from removal of icon  921  is an example of an interior unoccupied location. 
     Furthermore, the new configuration may be determined such that no icon is displaced by more than one location on the hexagonal grid relative to its location in the initial configuration. 
     Once the new configuration is determined, device  700  may transition the display of the plurality of icons to the new configuration.  FIGS. 9C-9D  illustrate an exemplary transition of the plurality of icons from configuration  930  (i.e., the initial configuration  920  without icon  921 ) to an exemplary new configuration  940 . As indicated in  FIG. 9C , the plurality of icons is reconfigured by reducing the rank of icons  922  and  923 . Icon  922  located diagonally adjacent to the unoccupied location is moved one step radially inward toward the origin O to fill the unoccupied location, reducing its rank from two to one. Icon  923  is also moved one step radially inward toward the origin to occupy the previous location of icon  922 , reducing its rank from three to two. Icon  923  is moved so as not to leave the new configuration  940  with an unoccupied location completely surrounded by six adjacent icons. The exemplary new compacted configuration  940  is shown in  FIG. 9D . 
     Notably, there are no interior unoccupied locations in the new configuration  940 , and the sum of the distances of the icons from the origin O in the new configuration  940  is less than in configuration  930  by the total distance that the relocated icons  922  and  923  are moved toward the origin O. Also, both of the moved icons  922  and  923  were translated only one step and occupy adjacent locations of lower rank relative to their previous respective locations. Furthermore, moving icons  922  and  923  are the adjacent icons in a higher rank than the unoccupied location that result in the greatest possible reduction in the sum distance. 
     As shown in the illustrated example, transitioning the display of the plurality of application icons may include moving a display of an icon to an unoccupied location from a location diagonally adjacent to the unoccupied location with respect to the orientation of the display. That is, the icon that fills the location of the removed icon may do so by translating in both the vertical and horizontal directions on the display from an adjacent location. 
     The foregoing example provides an intuitive way to remove an icon from a hexagonal configuration of icons, and to reconfigure the remaining icons. It reduces the cognitive burden on a user when deleting the display of icons, thereby creating a more efficient human-machine interface. The rearrangement of the hexagonal grid in response to the removal of the icon maintains many of the icons in their original positions, while allowing the selected icon to be removed from the grid. Icons that are moved remain close (e.g., adjacent) to their previous positions. This allows a user, who may have familiarity with the grid arrangement, to affect the arrangement while maintaining continuity from the old arrangement to the new. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     Attention is now directed to techniques and user interfaces for reconfiguring a plurality of user interface objects in response to relocation of one of the objects to a different location.  FIGS. 10A-10D  illustrate an example in which an icon on a hexagonal grid is relocated to an adjacent occupied location on the grid. 
       FIG. 10A  shows an exemplary user interface screen  1010  displayed on the display of device  700 . Screen  1010  includes an initial configuration  1020  of a plurality of icons occupying locations on a hexagonal grid. The grid itself is not displayed. The plurality of icons may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the icons on the display. 
     As shown in  FIG. 10A , device  700  receives an input in the form of touch gesture  1005 . Touch gesture  1005  represents a user contact on the touch-sensitive display at a position corresponding to icon  1021  located at a first location on the hexagonal grid. In some embodiments, touch  1005  may be a continuation of a touch that causes the device  700  to be set to a user interface reconfiguration mode (e.g., touch  805 ). 
     As indicated in  FIG. 10A , touch  1005  is translated along the touch-sensitive display, without a break in contact from the touch-sensitive display, to a second position corresponding to icon  1022 , which occupies a second location on the hexagonal grid. 
     Device  700  may detect the contact and movement of touch  1005  on the touch-sensitive display. As illustrated in  FIG. 10B , in response to detecting the movement of touch  1005  from the first position to the second position, device  700  may translate the display of icon  1021  from its initial location to the second position of the touch slightly above and to the right of the center of icon  1022 . In some embodiments, the translation of icon  1021  may track the movement of the touch  1005 . 
     Translating the display of icon  1021  results in the initial location of icon  1021  being unoccupied. In further response to detecting the movement of touch  1005  from the first position to the second position, device  700  may move the display of icon  1022  to the location on the hexagonal grid previously occupied by icon  1021 , resulting in configuration  1030  illustrated in  FIG. 10D . When touch  1005  is released, icon  1021  may be moved to the previous location of icon  1022 . In some embodiments, icon  1022  may be moved to the unoccupied location before touch  1005  is released. 
     The foregoing example illustrates an intuitive way to move a selected application icon in a hexagonal configuration of icons to a desired location and reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. The rearrangement of the hexagonal grid in response to the movement of the icon maintains the greatest number of icons in their original positions, while allowing the selected icon to be moved within the grid. This allows a user, who may have familiarity with the grid arrangement, to affect the arrangement while maintaining continuity from the old arrangement to the new. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     Attention is now directed to an example in which an icon on a hexagonal grid is relocated to an unoccupied location is described.  FIG. 11A  shows an exemplary user interface screen  1110  displayed on the display of device  700 . Screen  1110  includes an initial configuration  1120  of a plurality of icons occupying locations on a hexagonal grid. The grid itself is not displayed. The plurality of icons may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the icons on the display. 
     Device  700  may detect an input  1105  representing a selection of icon  1121 . In  FIG. 11A , the input  1105  is a touch gesture representing a user contact on the touch-sensitive display at a position corresponding to icon  1121  located at a first location on the hexagonal grid. In some embodiments, touch  1105  may be a continuation of a touch that causes the device  700  to be set to a user interface reconfiguration mode (e.g., touch  805 ). 
     As indicated in  FIG. 11A , touch  1105  is translated along the touch-sensitive display, without a break in contact from the touch-sensitive display, to a second position corresponding to an unoccupied location on the hexagonal grid. In the present example, touch  1105  is translated to the position shown in  FIG. 11B , which corresponds an unoccupied location outside of configuration  1120  above and to the right of icon  1122 . 
     Device  700  may detect the contact and movement of touch  1105 . In response, device  700  may translate the display of icon  1121  from its initial location on the hexagonal grid to the second position as shown in  FIG. 11B . In some embodiments, the translation of icon  1121  may track the movement of the touch  1105 . 
       FIG. 11C  depicts grid locations near the second position of touch  1105 . In the illustrated example, the second position of touch  1105  corresponds to a location represented by grid indicator A. Indicators representing location A and the locations adjacent to A are shown in  FIG. 11C  for reference, but may not actually be displayed on screen  1110 . A user may attempt to place icon  1121  at location A by breaking contact of touch  1105  from the touch-sensitive display, leaving the plurality of icons in the configuration  1130  shown in  FIG. 11C . 
     In some embodiments, device  700  may require that each icon in a plurality of icons have at least two neighboring icons on the hexagonal grid. That is, at least two locations on the hexagonal grid adjacent to an icon must be occupied. Stated another way, no more than four of the location on the hexagonal grid adjacent to an icon may be unoccupied. 
     Device  700  may detect the break in contact of touch  1105  and, in response, determine whether there are less than two occupied locations adjacent to the location associated with the second position of touch  1105  (i.e., location A). In the illustrated example, since location B is the only location on the hexagonal grid adjacent to location A that is occupied, device  700  determines that icon  1121  has only one neighbor. 
     In accordance with a determination that there are less than two occupied locations adjacent to location A, device  700  may determine an alternative unoccupied location on the hexagonal grid for icon  1121  that has at least two adjacent occupied locations, and move the display of icon  1121  to the alternative location. Device  700  may determine the alternative location based on proximity to the requested location. The alternative location may be a location on the hexagonal grid nearest to location A that is adjacent to at least two occupied locations. In  FIG. 11C , locations C and D are unoccupied, equidistant from location A, and adjacent to at least two other icons. As indicated in the illustrated example, device  700  determines location C as the alternative location and moves icon  1121  accordingly (see  FIG. 11D ). 
     In accordance with a determination that there are greater than two occupied locations adjacent to location A, device  700  may leave icon  1121  in the location corresponding to the second position of touch  1105 . 
     Notably, translating the display of icon  1121  result in an unoccupied interior location in the hexagonal grid (i.e., an unoccupied location adjacent to six icons). In accordance with a determination that the unoccupied location is adjacent to six icons, device  700  may determine a new configuration of the plurality of application icons without an unoccupied location adjacent to six application icons. Optionally, in accordance with a determination that the unoccupied location is not adjacent to six application icons, the display of the plurality of application icons may be maintained in its current configuration. 
     Device  700  may determine the new configuration according to one or more of the techniques described above with reference to  FIGS. 9A-9D . For example, the new configuration may be determined to compact the icons such that, as a whole, the icons move closer to the origin. The configuration may also be determined such that the new configuration has no unoccupied locations adjacent to six icons and no icon is moved more than one step. 
       FIGS. 11C-11D  illustrate an exemplary transition of the plurality of icons to an exemplary new configuration  1140 . As indicated in  FIG. 11C , device  700  transitions the display of icon  1123  one step on the hexagonal grid toward the origin so that the configuration no longer includes an unoccupied location with six adjacent icons. Moving icon  1123  toward the origin also reduces the sum of the distances of the icons from the origin.  FIG. 11D  shows the icons arranged in the new configuration  1140 . Furthermore, icon  1123  is the icon of higher rank adjacent to the unoccupied location that results in the greatest reduction in sum distance from the origin of the configuration. 
     The foregoing example illustrates an intuitive way to move a selected application icon in a hexagonal configuration of icons to a desired location and reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. The rearrangement of the hexagonal grid in response to the movement of the icon keeps the icons together and maintains many of the icons in their original positions, while allowing the selected icon to be moved within the grid. Icons that are moved remain close (e.g., adjacent) to their previous positions. This allows a user, who may have familiarity with the grid arrangement, to affect the arrangement while maintaining continuity from the old arrangement to the new. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     It should be recognized that icon  1123  may be moved before, after, or at the same time as icon  1121  is moved from location A to location C (e.g., upon the translation of icon  1121  to location A). It should also be recognized that removal of an icon, may result in a remaining icon being left with only one neighbor. In which case, the techniques described above may be applied to reconfigure the remaining icons such that no icon has less than two adjacent icons. 
     Attention is now directed to examples in which an icon is moved to a non-adjacent occupied location.  FIG. 12A  shows an exemplary user interface screen  1210  displayed on the display of device  700 . Screen  1210  includes an initial configuration  1220  of a plurality of icons occupying locations on a hexagonal grid. The grid itself is not displayed. The plurality of icons may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the icons on the display. 
     Device  700  may detect an input  1205  representing a selection of icon  1221 . In  FIG. 12A , the input  1205  is a touch gesture representing a user contact on the touch-sensitive display at a position corresponding to icon  1221  located at a first location on the hexagonal grid. In some embodiments, touch  1205  may be a continuation of a touch that causes the device  700  to be set to a user interface reconfiguration mode (e.g., touch  805 ). 
     As indicated in  FIG. 12A , touch  1205  is translated along the touch-sensitive display, without a break in contact from the touch-sensitive display, to a second position corresponding to a location on the hexagonal grid occupied by icon  1222 . 
     Device  700  may detect the contact and movement of touch  1205 . In response, device  700  may translate the display of icon  1221  from its initial location on the hexagonal grid to the second position of the touch slightly offset to the right of location A indicated in  FIG. 12B . In some embodiments, the translation of icon  1221  may track the movement of the touch  1205 . 
     In further response to detecting the movement of touch  1205  from the first position to the second position, device  700  may determine a new configuration of the icons based on the previous location of icon  1221  (indicated by point D in  FIG. 12B ) and the location corresponding to the second position of the touch, location A. The new configuration may be determined to fill the unoccupied location resulting from the translation of icon  1221  (i.e., location D). The new configuration may also be determined such that no icon, except the selected icon  1221  is displaced by more than one location relative to its location in configuration  1220 . 
       FIGS. 12B-12D  illustrate an exemplary transition of the plurality of icons to an exemplary new configuration  1230 . As indicated in  FIG. 12B , icon  1222  is moved one step on the hexagonal grid toward the origin to location B; icon  1223  is moved one step on the hexagonal grid counter-clockwise around the origin to location C; and icon  1224  is moved one step on the hexagonal grid counter-clockwise around the origin to location D. As shown in  FIG. 12C , the display of the icons may be transitioned to the new configuration before touch  1205  is released. 
     In some embodiments, device  700  may determine which icons to move, and to which locations, according to the following technique. If a first icon in a first location (e.g., the selected icon) is moved to the location of a second icon at a higher rank, the second icon is moved to an adjacent location in the next lowest rank that is closest to the unoccupied first location. If the location to which the second icon is moved is occupied by a third icon, the third icon is moved according to the same method as the second icon provided it is in a higher rank than the unoccupied first location. Device  700  may attempt to move each subsequent icon according to this technique until an icon is reached with the same rank as the unoccupied first location left by the first icon. If an icon has the same rank as the unoccupied first location, the icon is moved to an adjacent location in the same rank that is closest to the unoccupied first location. This process may continue until an icon is moved into the first unoccupied location. Notably, the rank of each moved icon is reduced until an icon in the same rank as the unoccupied location is reached. 
     The new configuration  1230  and transition described above with reference to  FIGS. 12B-12D  illustrate an exemplary implementation of this technique. Icon  1221  is moved from location D in rank one to location A of icon  1222  in rank two (i.e., a higher rank). Location B is the location adjacent to location A in the next lowest rank that is closes to location D. Thus, icon  1222  is moved to location B. Icon  1223  is located at location B. Since location B has the same rank as unoccupied location D, icon  1223  is moved to location C, which is the location adjacent to location B within the same rank that is closest to location D. Icon  1224  at location C moves to location D since it is adjacent to location D. 
     In some embodiments, once touch  1205  breaks contact with the touch-sensitive display, the display of icon  1221  is moved such that it is centered on location A.  FIG. 12D  shows the icons arranged in the new configuration  1230  with icon  1221  at location A. It should be recognized that the display of the plurality of icons may be transitioned to the new configuration before, after, or at the same time as icon  1221  is moved to a position corresponding to a different location on the hexagonal grid (e.g., upon the translation of icon  1221  to the position close to location A). 
     The foregoing example illustrates an intuitive way to move a selected application icon in a hexagonal configuration of icons to a desired location and reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. The rearrangement of the hexagonal grid in response to the movement of the icon maintains many of the icons in their original positions, while allowing the selected icon to be moved within the grid. Icons that are moved remain close (e.g., adjacent) to their previous positions. This allows a user, who may have familiarity with the grid arrangement, to affect the arrangement while maintaining continuity from the old arrangement to the new. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     In some embodiments, a configuration may be determined such that an icon is not moved if it has a lower rank than both the location of the selected icon (e.g., icon  1221 ) and the location corresponding to the second position of the touch  1205 . That is, icons having a rank lower than the rank of the location corresponding to the first position of the touch and lower than the rank of the location corresponding to the second position of the touch are displayed in the same location in the new configuration as in the initial configuration. 
       FIGS. 13A-13D  illustrate an exemplary implementation of this technique.  FIGS. 13A-13D  also illustrate an example of a selected icon being moved to a different location within the same rank.  FIG. 13A  shows an exemplary user interface screen  1310  displayed on the display of device  700 . Screen  1310  includes an initial configuration  1320  of a plurality of icons occupying locations on a hexagonal grid. The grid itself is not displayed. The plurality of icons may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the icons on the display. 
     Device  700  may detect an input  1305  representing a selection of icon  1321 . In  FIG. 13A , the input  1305  is a touch gesture representing a user contact on the touch-sensitive display at a position corresponding to icon  1321  located at a first location on the hexagonal grid. In some embodiments, touch  1305  may be a continuation of a touch that causes the device  700  to be set to a user interface reconfiguration mode (e.g., touch  805 ). 
     As indicated in  FIG. 13A , touch  1305  is translated along the touch-sensitive display, without a break in contact from the touch-sensitive display, to a second position corresponding to a location on the hexagonal grid occupied by icon  1322 . 
     Device  700  may detect the contact and movement of touch  1305 . In response, device  700  may translate the display of icon  1321  from its initial location on the hexagonal grid to the second position of the touch shown in  FIG. 13B . In some embodiments, the translation of icon  1321  may track the movement of the touch  1305 . 
     In further response to detecting the movement of touch  1305  from the first position to the second position, device  700  may determine a new configuration and transition the display of the icons based on the previous location of icon  1321  (indicated by point A) and the location corresponding to the second position of the touch, location C. 
     In some embodiments, the icons may be reconfigured by moving icon  1322  to location B (i.e., the origin O) and icon  1323  from location B to location A. However, the location of the selected icon  1321  and the location to which icon  1321  is moved both have a rank of one. Location B (the origin) has a rank of zero. To satisfy the criterion of maintaining the position of icons having a lower rank than the locations of the selected icon and the location corresponding to the second position of the touch  1305 , the icons may be moved around the origin to avoid moving icon  1323 . For example, as illustrated in  FIGS. 13C-13D , icons  1322 ,  1324 , and  1325  may each be moved one location counter-clockwise around the origin to fill unoccupied location A. 
     Notably, this reconfiguration is another example of the technique described above in which icons with the same rank as the unoccupied location of the selected icon are moved to an adjacent location in the same rank that is closest to the unoccupied location. As shown in  FIG. 13C , locations D and F are in the same rank as location C and are equally close to the unoccupied location A. Thus, icon  1322  could have been moved to either location D or F. In the illustrated example, device  700  determines to move icon  1322  to location D. Location E is the location adjacent to E in the same rank that is closest to A, so icon  1324  is moved to location E. Icon  1325  is adjacent to location A and is thus moved to fill the unoccupied location. 
     The foregoing example illustrates an intuitive way to move a selected application icon in a hexagonal configuration of icons to a desired location and reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. The rearrangement of the hexagonal grid in response to the movement of the icon maintains many of the icons in their original positions, while allowing the selected icon to be moved within the grid. Icons that are moved remain close (e.g., adjacent) to their previous positions. This allows a user, who may have familiarity with the grid arrangement, to affect the arrangement while maintaining continuity from the old arrangement to the new. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     In some embodiments, a selected icon may be moved to a non-adjacent location of lower rank. For example, the second point of a dragged touch in the example above may correspond to a location of lower rank than the location corresponding to the first point of the touch. 
       FIGS. 14A-14D  illustrate an example in which a selected icon is moved to a non-adjacent location of lower rank.  FIG. 14A  shows an exemplary user interface screen  1410  displayed on the display of device  700 . Screen  1410  includes an initial configuration  1420  of a plurality of icons occupying locations on a hexagonal grid. The grid itself is not displayed. The plurality of icons may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the icons on the display. 
     Device  700  may detect an input  1405  representing a selection of icon  1421 . In  FIG. 14A , the input  1405  is a touch gesture representing a user contact on the touch-sensitive display at a position corresponding to icon  1421  located at a first location on the hexagonal grid. In some embodiments, touch  1405  may be a continuation of a touch that causes the device  700  to be set to a user interface reconfiguration mode (e.g., touch  805 ). 
     As indicated in  FIG. 14A , touch  1405  is translated along the touch-sensitive display, without a break in contact from the touch-sensitive display, to a second position corresponding to a location on the hexagonal grid occupied by icon  1422 . 
     Device  700  may detect the contact and movement of touch  1405 . In response, device  700  may translate the display of icon  1421  from its initial location on the hexagonal grid to the second position of the touch shown in  FIG. 14B . In some embodiments, the translation of icon  1421  may track the movement of the touch  1405 . 
     In further response to detecting the movement of touch  1405  from the first position to the second position, device  700  may determine a new configuration and transition the display of the icons based on the previous location of icon  1421  (location A) and the location corresponding to the second position of the touch (location B). Notably, location A has a rank of two and location B has a rank of one. 
     Device  700  may determine a new configuration and transition the display of the icons as indicated in  FIGS. 14B-14D .  FIG. 14B  indicates that the display of the icons transition to the new configuration by moving icon  1422  within rank one to location C and moving icon  1423  from rank one to rank two into unoccupied location A. More generally, the unoccupied location is filled by an icon from a lower rank, and the icon at the location to which the selected icon is being moved stays in the same rank. Notably, the icons are also transitioned such that no icon moves more than one step on the hexagonal grid, the icon at the origin is not moved, and there are no unoccupied interior locations. 
     In some embodiments, device  700  may determine which icons to move, and to which locations, according to the following technique. If a first icon in a first location (e.g., the selected icon) is moved to the location of a second icon at a lower rank, the second icon is moved to an adjacent location in an equal or higher rank that is closest to the unoccupied first location. In some embodiments, if there are two adjacent locations that are equally close to the unoccupied location, the icon is moved to the location with equal rank. If the location to which the second icon is moved is occupied by a third icon, the third icon is moved according to the same method as the second icon. Device  700  may attempt to move each subsequent icon according to this technique until an icon is moved into the unoccupied location left by the first icon. 
     The new configuration and transition described above with reference to  FIGS. 14B-14D  illustrate an exemplary implementation of this technique. Icon  1421  is moved from location A in rank two to location B of icon  1422  in rank one. Location C is the location adjacent to location B that is closest to unoccupied location A and is in the same rank. Note that relative to location B, adjacent location D is the same distance from A as location C, but is in a higher rank. Thus, icon  1422  is moved to location C. Icon  1423  is located at location C. Since location C is adjacent to the unoccupied location A, icon  1423  moves up in rank to fill the unoccupied location. 
     The foregoing example illustrates an intuitive way to move a selected application icon in a hexagonal configuration of icons to a desired location and reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. The rearrangement of the hexagonal grid in response to the movement of the icon maintains many of the icons in their original positions, while allowing the selected icon to be moved within the grid. Icons that are moved remain close (e.g., adjacent) to their previous positions. This allows a user, who may have familiarity with the grid arrangement, to affect the arrangement while maintaining continuity from the old arrangement to the new. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     In addition to the techniques described above, various other techniques are possible for reconfiguring user interface objects arranged on a hexagonal grid. For example, the icons may be arranged such that there are no breaks between groups of icons. That is, there is no icon that is adjacent only to icons of equal or higher rank (i.e., every icon is adjacent to at least one icon of lower rank). 
     Attention is now directed to techniques and user interfaces for improving the ability of a user to accurately position a touch on a touch-sensitive display. The ability to accurately position a touch may make use of a device more efficient by helping a user relocate a selected icon to a desired location. 
       FIG. 15A  shows an exemplary user interface screen  1510  displayed on the display of device  700 . Screen  1510  includes a plurality of user interface objects (e.g., application icons for launching application programs) arranged in a hexagonal grid. The plurality of user interface objects may be displayed while device  700  is operating in a user interface reconfiguration mode for reconfiguring the application icons on the display. 
     In  FIG. 15A , a user contact in the form of a touch input  1505  is positioned on an icon corresponding to application N. In some embodiments, device  700  may determine whether the duration of the touch  1505  exceeds a predetermined threshold. In accordance with a determination that the duration of the touch  1505  exceeds the predetermined threshold, device  700  may display an enlarged portion  1520  of the displayed screen  1510  that includes an area surrounding the current position of the touch  1505 .  FIG. 15B  depicts an exemplary enlarged view  1520 . In the illustrated example, the enlarged view includes a circular display positioned above the current point of contact on the touch-sensitive display. 
     In some embodiments, it may be possible for a user to scan along the display to view an enlarged view of a different portion of the screen  1510 . Without releasing the touch  1505 , a user may drag (e.g., slide) the touch to a different point on the display. If device  700  has a small form factor and/or a small display, the enlarged portion of the screen may help the user know the current position of the touch and to accurately place icon N in a new desired location. 
     As indicated by the arrow in  FIG. 15C , the touch is moved, without breaking contact with the touch-sensitive display, to a position on an icon corresponding to application F. While in the a user interface reconfiguration mode, device  700  may detect touch  1505  on the touch-sensitive display at icon N, and while continuing to detect touch  1505 , may detect the movement of the touch from the position on icon N to the position on icon F without a break in contact of the touch on the touch-sensitive display. 
     In response to detecting the movement, device  700  may update enlarged view as touch  1505  is moved along the touch-sensitive display. Also, icon N may be translated along with the movement of the touch such that the icon is displayed at the point of contact of the touch (e.g., underneath the user&#39;s finger). In the illustrated example, however, icon N does not appear in the enlarged view  1520 . In some embodiments, the enlarged view of the displayed screen may include the display of the icon being relocated (e.g., icon N). 
     In some embodiments, instead of, or in addition to displaying the enlarged view in accordance with a determination that the duration of the touch  1505  exceeds the predetermined threshold, device  700  may display the enlarged view in response to detecting the movement. 
     Attention is now directed to exemplary processes for carrying out the user interface techniques described above. 
       FIG. 16  is a flow diagram illustrating process  1600  for reconfiguring a user interface at an electronic device with a touch-sensitive display. Process  1600  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  1600  may provide an intuitive way to remove an application icon from a hexagonal configuration of icons, and to reconfigure the remaining icons. The method reduces the cognitive burden on a user when deleting the display of icons, thereby creating a more efficient human-machine interface. Process  1600  also provides a way to reorganize icons that keeps the icons together and close to their previous positions. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  1602 , a plurality of application icons (e.g.,  820 ) for launching application programs is displayed on the display (e.g.,  112 ,  340 ,  504 ). The application icons may be arranged in a first configuration (e.g.,  920 ) and may occupy respective locations on a hexagonal grid (e.g.,  600 ) in relation to an origin. At block  1604 , a first input (e.g.,  805 ) on the touch-sensitive display is detected. At block  1606 , in response to detecting the first input, the electronic device is caused to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display. At block  1608 , a second input (e.g.  905 ) is detected on the touch-sensitive display representing a selection of a first application icon (e.g.,  921 ) at a first location on the hexagonal grid. At block  1610 , in response to the second input (e.g.,  905 ), the display of the first application icon (e.g.,  921 ) is removed. At block  1612 , a second configuration (e.g.,  940 ) of the application icons without the first application icon (e.g.,  921 ) is determined such that a sum of the distances from the origin of the application icons in the first configuration (e.g.,  920 ), minus the distance from the origin of the first application icon (e.g.,  921 ) in the first configuration, is greater than a sum of the distances from the origin of the application icons in the second configuration (e.g.,  920 ). At block  1614 , the display of the plurality of application icons is transitioned from the first configuration (e.g.,  920 ) to the second configuration (e.g.,  940 ). 
       FIG. 17  is a flow diagram illustrating process  1700  for reconfiguring a user interface at an electronic device with a touch-sensitive display. Process  1700  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  1700  may provide an intuitive way to move a selected application icon in a hexagonal configuration of icons to a desired location, and to reconfigure the icons to make room for the selected icon at the desired location. The method reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. Process  1700  also provides a way to reorganize icons that keeps the icons together and close to their previous positions. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  1702 , a plurality of application icons (e.g.  1020 ) is displayed on the display (e.g.,  112 ,  340 ,  504 ) in a user interface reconfiguration mode for reconfiguring the application icons on the display. The plurality of application icons occupy respective locations on a hexagonal grid. At block  1704 , a user contact (e.g.,  1005 ) is detected on the touch-sensitive display (e.g.,  112 ,  340 ,  504 ) at a first position corresponding to a first application icon (e.g.,  1021 ) at a first location on the hexagonal grid. At block  1706 , while continuing to detect the user contact, movement of the user contact (e.g.,  1005 ) from the first position to a second position without a break in contact of the user contact on the touch-sensitive display is detected. The second position may correspond to a second application icon (e.g.,  1022 ) at a second location on the hexagonal grid. At block  1708 , in response to detecting movement of the user contact from the first position to the second position: the display of the first application icon (e.g.,  1021 ) is translated from the first location to the second position; and the display of the second application icon (e.g.,  1022 ) is moved to the first location. 
       FIG. 18  is a flow diagram illustrating process  1800  for reconfiguring a user interface at an electronic device with a display. Process  1800  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  1800  may provide an intuitive way to move a selected application icon in a hexagonal configuration of icons to another location, and to reconfigure the icons. The method reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. Process  1800  also provides a way to reorganize icons that keeps the icons together and close to their previous positions. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  1802 , a plurality of application icons (e.g.,  1120 ) is displayed on the display (e.g.,  112 ,  340 ,  504 ) in a user interface reconfiguration mode for reconfiguring the application icons on the display, the plurality of application icons occupying respective locations on a hexagonal grid. At block  1804 , a user contact (e.g.,  1105 ) is detected on the touch-sensitive display at a first position corresponding to a first application icon (e.g.,  1121 ) at a first location on the hexagonal grid. At block  1806 , while continuing to detect the user contact, movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display is detected, the second position corresponding to a second location (e.g.,  FIG. 11B , location A) on the hexagonal grid, wherein the second location is unoccupied. At block  1808 , in response to detecting movement of the user contact from the first position to the second position, the display of the first application icon (e.g.,  1121 ) is transitioned from the first location to the second position. At block  1810 , a break in contact of the user contact on the touch-sensitive display is detected. At block  1812 , in response to the break in contact of the user contact on the touch-sensitive display, a determination is made whether there are less than two occupied locations adjacent to the second location ( FIG. 11B , location A). At block  1814 , in accordance with a determination that there are less than two occupied locations adjacent to the second location: a third location (e.g.,  FIG. 11C , location C) on the hexagonal grid having at least two adjacent locations that are occupied is determined, and the display of the first application icon (e.g.,  1121 ) is moved to the third location on the hexagonal grid. 
       FIG. 19  is a flow diagram illustrating process  1900  for reconfiguring a user interface at an electronic device with a touch-sensitive display. Process  1900  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  1900  may provide an intuitive way to move a selected application icon in a hexagonal configuration of icons to another location, and to reconfigure the icons to make room for the selected icon at the desired location. The method reduces the cognitive burden on a user when organizing icons, thereby creating a more efficient human-machine interface. Process  1900  also provides a way to reorganize icons that keeps the icons together and close to their previous positions. This may be both aesthetically appealing and may allow a user to quickly and easily locate an icon after it has been moved. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  1902 , a plurality of application icons is displayed on the display (e.g.,  112 ,  340 ,  504 ) in a user interface reconfiguration mode for reconfiguring the application icons on the display, the application icons arranged in a first configuration (e.g.  1220 ), wherein the application icons occupy respective locations on a hexagonal grid in relation to an origin, and wherein the application icons have corresponding ranks based on their respective locations in relation to the origin. At block  1904 , a user contact (e.g.,  1205 ) on the touch-sensitive display is detected at a first position corresponding to a first application icon (e.g.,  1221 ) at a first location on the hexagonal grid. At block  1906 , while continuing to detect the user contact, movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive display is detected, the second position corresponding to a second application icon (e.g.,  1222 ) at a second location (e.g.,  FIG. 12B , location A) on the hexagonal grid. At block  1908 , in response to detecting movement of the user contact from the first position to the second position: the display of the first application icon is translated from the first location to the second position; a second configuration (e.g.,  1230 ) of the application icons is determined based on the first location and the second location (e.g.,  FIG. 12B , locations D and A, respectively); and the display of the application icons is transitioned from the first configuration (e.g.,  1220 ) to the second configuration (e.g.,  1230 ), wherein, in the second configuration, no application icon except the first application icon is displaced by more than one location relative to the first configuration, and wherein transitioning the display of the application icons from the first configuration to the second configuration comprises: moving the display of the second application icon to a third location (e.g.,  FIG. 12B , location B) adjacent to the second location (e.g.,  FIG. 12B , location A); and moving a display of a third application icon (e.g.,  1224 ) to the first location from a fourth location (e.g.,  FIG. 12B , location C) adjacent to the first location. 
       FIG. 20  is a flow diagram illustrating process  2000  for reconfiguring a user interface at an electronic device with a touch-sensitive display. Process  2000  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  2000  may provide an intuitive way to reconfigure a user interface and to indicate that the interface may be reconfigured. The method reduces the cognitive burden on a user when reconfiguring icons on a user interface, thereby creating a more efficient human-machine interface. The indication may be both aesthetically appealing and may allow a user to quickly and easily acknowledge that the interface may be reconfigured. For battery-operated computing devices, enabling a user to reconfigure icons more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  2002 , one or more application icons (e.g.,  820 ) are displayed in a hexagonal arrangement. At block  2004 , a first input (e.g.,  805 ) on the touch-sensitive display (e.g.,  112 ,  340 ,  504 ) is detected. At block  2006 , in response to the first input: the electronic device is caused to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display; and the display of the first application icon is caused to fluctuate in size (e.g.,  FIGS. 8A-8B ). 
       FIG. 21  is a flow diagram illustrating process  2100  for reconfiguring a user interface at an electronic device with a touch-sensitive display, the touch-sensitive display comprising one or more sensors to detect the intensity of contacts with the touch-sensitive display. Process  2100  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  2100  may provide an intuitive way to remove an application icon from a hexagonal configuration of icons. The method reduces the cognitive burden on a user when deleting the display of icons, thereby creating a more efficient human-machine interface. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  2102 , one or more application icons (e.g.,  920 ) are displayed in a hexagonal arrangement. At block  2104 , on the touch-sensitive display (e.g.,  112 ,  340 ,  504 ), a touch (e.g.,  905 ) corresponding to a selection of a first application icon (e.g.,  921 ) corresponding to a respective application is detected. At block  2106 , a determination is made whether the touch has a characteristic intensity above a threshold intensity. At block  2108 , in accordance with a determination that the characteristic intensity is above the threshold intensity, the display of the selected icon is removed (e.g.,  930 ). 
       FIG. 22  is a flow diagram illustrating process  2200  for reconfiguring a user interface at an electronic device with a touch-sensitive display the touch-sensitive display comprising one or more sensors to detect the intensity of contacts with the touch-sensitive display. Process  2200  may be carried out by electronic devices such as devices  100 ,  300 , and/or  500  ( FIGS. 1A, 3A, 5A ) in various embodiments. 
     Process  2200  may provide an intuitive way to remove an application icon from a hexagonal configuration of icons. The method reduces the cognitive burden on a user when deleting the display of icons, thereby creating a more efficient human-machine interface. For battery-operated computing devices, enabling a user to organize and access application programs more quickly and more efficiently conserves power and increases the time between battery charges. 
     At block  2202 , one or more application icons (e.g.,  820 ) are displayed in a hexagonal arrangement. At block  2204 , a first touch (e.g.,  805 ) is detected on the touch-sensitive display (e.g.,  112 ,  340 ,  504 ). At block  2206 , a determination is made whether the touch has a characteristic intensity above a threshold intensity. At block  2208 , in accordance with a determination that the characteristic intensity is above the threshold intensity, a deletion confirmation affordance is displayed (e.g.,  840 ). 
     It should be understood that the particular order in which the operations in  FIGS. 16-22  have been described is exemplary and not intended to indicate that the described order is the only order in which the operations could be performed. One of ordinary skill in the art would recognize various ways to reorder the operations described herein. For brevity, these details are not repeated here. Additionally, it should be noted that aspects of processes  1600 - 2200  ( FIGS. 16-22 ) may be incorporated with one another. 
     The operations in the information processing methods described above may be implemented by running one or more functional modules in information processing apparatus such as general purpose processors or application specific chips. These modules, combinations of these modules, and/or their combination with general hardware (e.g., as described above with respect to  FIGS. 1A, 1B, 3, 5A, and 5B ) are all included within the scope of protection of the invention. 
       FIG. 23  shows exemplary functional blocks of an electronic device  2300  that, in some embodiments, performs the above-described features. As shown in  FIG. 23 , an electronic device  2300  may include display unit  2302  configured to display graphical objects; human input interface unit  2304  configured to receive user input; one or more RF units  2306  configured to detect and communicate with external electronic devices; one or more feedback unit  2308  configured to provide a user with haptic, audio, and/or visual feedback; and processing unit  2310  coupled to display unit  2302 , human input interface unit  2304 , RF unit(s)  2306 , and feedback unit  2308 . In some embodiments, processing unit  2310  is configured to support an operating system running on operating system unit  2312 . In turn, operating system unit  2312  may support an applications unit  2314  for launching and running one or more applications. 
     In some embodiments, the processing unit  2310  includes a display enabling unit  2316  and a user interface reconfiguration unit  2318 . In some embodiments, the display enabling unit  2316  is configured to cause a display of a user interface (or portions of a user interface) in conjunction with the display unit  2302 . For example, the display enabling unit  2316  may be used for displaying user interface screens associated with a photos application. 
     In some embodiments, RF unit  2306  is configured to detect and receive information from an external device, such as photo information. In some embodiments, the RF unit is configured to detect and transmit information to an external device, such information associated with a photo or collection of photos stored on the external device. 
     In some embodiments, the user interface reconfiguration unit  2318  is configured to receive input, e.g., through the use of human input interface unit  2304  and/or RF unit  2306  and to perform the user interface reconfiguration features described above. 
     The units of  FIG. 23  may be used to implement the various techniques and methods described above with respect to  FIGS. 16-22 . The units of device  2300  are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described examples. It is understood by persons of skill in the art that the functional blocks described in  FIG. 23  are, optionally, combined or separated into sub-blocks to implement the principles of the various described examples. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     In accordance with some embodiments,  FIG. 24  shows a functional block diagram of an electronic device  2400  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 24  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 24 , an electronic device  2400  includes a display unit  2402  configured to display a graphic user interface, a touch sensitive surface unit  2404  configured to receive contacts, and a processing unit  2406  coupled to the display unit  2402  and the touch-sensitive surface unit  2404 . In some embodiments, the processing unit includes a display enabling unit  2408 , a detecting unit  2410 , a causing unit  2412 , a display disabling unit  2414 , a determining unit  2416 , a transition enabling unit  2418 , and, optionally, a launching unit  2420 . 
     The processing unit  2406  is configured to enable display (e.g., with the display enabling unit  2408 ) of a plurality of application icons for launching application programs, the application icons arranged in a first configuration, and where the application icons occupy respective locations on a hexagonal grid in relation to an origin. The processing unit  2406  is further configured to detect (e.g., with the detecting unit  2410 ) a first input on the touch-sensitive surface unit  2404 ; in response to detecting the first input, cause (e.g., with the causing unit  2412 ) the electronic device to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display unit  2402 ; and detect a second input on the touch-sensitive surface unit  2404  representing a selection of a first application icon at a first location on the hexagonal grid. The processing unit  2406  is further configured to, in response to the second input, disable display (e.g., with the display disabling unit  2414 ) of the first application icon; determine (e.g., with the determining unit  2416 ) a second configuration of the application icons without the first application icon, where a sum of the distances from the origin of the application icons in the first configuration, minus the distance from the origin of the first application icon in the first configuration, is greater than a sum of the distances from the origin of the application icons in the second configuration; and enable transition (e.g., with the transition enabling unit  2418 ) of the display of the plurality of application icons from the first configuration to the second configuration. 
     In some embodiments, disabling the display of the first application icon results in an unoccupied location on the hexagonal grid at the first location; and enabling transition of the display of the plurality of application icons includes moving a display of a second application icon from a second location to the unoccupied location, where the second location is diagonally adjacent to the first location with respect to the display unit  2402 . 
     In some embodiments, the first input is a contact detected at a position corresponding to one of the plurality of application icons. 
     In some embodiments, the processing unit  2406  is further configured to determine (e.g., with the determining unit  2416 ) whether the duration of the contact exceeds a predetermined threshold, and the processing unit  2406  is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the contact exceeds the predetermined threshold. 
     In some embodiments, the processing unit  2406  is further configured to, in response to detecting the first input and in accordance with a determination that the duration of the contact does not exceed the predetermined threshold, launch (e.g., with the launching unit  2420 ) the application program corresponding to the application icon at the position of the contact. 
     In some embodiments, the touch-sensitive surface unit  2404  comprises one or more sensors to detect the intensity of contacts with the touch-sensitive surface unit  2404 , the first input is a touch, the processing unit  2406  is further configured to determine (e.g., with the determining unit  2416 ) whether the touch has a characteristic intensity above a threshold intensity, and the processing unit  2406  is caused to operate in the user interface reconfiguration mode in response to detecting the touch and in accordance with a determination that the characteristic intensity is above the threshold intensity. 
     The operations described above with reference to  FIG. 16  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 24 . For example, display operation  1602 , detecting operations  1604  and  1608 , causing operation  1606 , removing operation  1610 , determining operation  1612 , and transition operation  1614  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     In accordance with some embodiments,  FIG. 25  shows a functional block diagram of an electronic device  2500  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 25  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 25 , an electronic device  2500  includes a display unit  2502  configured to display a graphic user interface, a touch sensitive surface unit  2504  configured to receive contacts, and a processing unit  2506  coupled to the display unit  2502  and the touch-sensitive surface unit  2504 . In some embodiments, the processing unit includes a display enabling unit  2508 , a detecting unit  2510 , a translation enabling unit  2512 , a movement enabling unit  2514 , and optionally, a causing unit  2516 , a determining unit  2518 , and a launching unit  2520 . 
     The processing unit  2506  is configured to enable display (e.g., with the display enabling unit  2508 ) of, on the display unit  2502 , a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display unit  2502 , where the plurality of application icons occupy respective locations on a hexagonal grid; detect (e.g., with the detecting unit  2510 ) a user contact on the touch-sensitive surface unit  2504  at a first position corresponding to a first application icon at a first location on the hexagonal grid; while continuing to detect the user contact, detect (e.g., with the detecting unit  2510 ) movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive surface unit  2504 , the second position corresponding to a second application icon at a second location on the hexagonal grid; in response to detecting movement of the user contact from the first position to the second position: enable translation (e.g., with translation enabling unit  2512 ) of the display of the first application icon from the first location to the second position; and enable movement (e.g., with movement enabling unit  2514 ) of the display of the second application icon to the first location. 
     In some embodiments, the processing unit  2506  further configured to detect (e.g., with detecting unit  2510 ) a first input on the touch-sensitive surface unit  2504 , and in response to detecting the first input, cause (e.g., with causing unit  2516 ) the processing unit  2506  to operate in the user interface reconfiguration mode. 
     In some embodiments, the first input is a first contact detected at a position corresponding to one of the plurality of application icons. 
     In some embodiments, the processing unit  2506  is further configured to determine (e.g., with the determining unit  2518 ) whether the duration of the first contact exceeds a predetermined threshold, and the processing unit  2506  is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the first contact exceeds the predetermined threshold. 
     In some embodiments, the processing unit  2506  is further configured to, in response to detecting the first input and in accordance with a determination that the duration of the first contact does not exceed the predetermined threshold launch (e.g., with the launching unit  2520 ) the application program corresponding to the application icon at the position of the contact. 
     In some embodiments, the first input is the user contact. 
     In some embodiments, the touch-sensitive surface unit  2504  comprises one or more sensors to detect the intensity of contacts with the touch-sensitive surface unit  2504 , and the processing unit  2506  is further configured to detect (e.g., with the detecting unit  2510 ) a first touch on the touch-sensitive surface unit  2504 ; determine (e.g., with the determining unit  2518 ) whether the touch has a characteristic intensity above a threshold intensity; and in accordance with a determination that the characteristic intensity is above the threshold intensity, cause (e.g., with the causing unit  2516 ) the processing unit  2506  to operate in the user interface reconfiguration mode. 
     The operations described above with reference to  FIG. 17  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 25 . For example, displaying operation  1702 , detecting operations  1704  and  1706 , and translating operation  1708  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     In accordance with some embodiments,  FIG. 26  shows a functional block diagram of an electronic device  2600  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 26  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 26 , an electronic device  2600  includes a display unit  2602  configured to display a graphic user interface, a touch sensitive surface unit  2604  configured to receive contacts, and a processing unit  2606  coupled to the display unit  2602  and the touch-sensitive surface unit  2604 . In some embodiments, the processing unit includes a display enabling unit  2608 , a detecting unit  2610 , a translation enabling unit  2612 , a determining unit  2614 , a movement enabling unit  2616 , and optionally, a transition enabling unit  2618 , a maintenance enabling unit  2620 , a causing unit  2622 , and a launching unit  2624 . 
     The processing unit  2606  is configured to enable display (e.g., display enabling unit  2608 ) of, on the display unit  2602 , a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display unit  2602 , the plurality of application icons occupying respective locations on a hexagonal grid; detect (e.g., detecting unit  2610 ) a user contact on the touch-sensitive surface unit  2604  at a first position corresponding to a first application icon at a first location on the hexagonal grid; while continuing to detect the user contact, detect (e.g., detecting unit  2610 ) movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive surface unit  2604 , the second position corresponding to a second location on the hexagonal grid, and where the second location is unoccupied; in response to detecting movement of the user contact from the first position to the second position, enable translation (e.g., transition enabling unit  2612 ) of the display of the first application icon from the first location to the second position; detect (e.g., with the detecting unit  2610 ) a break in contact of the user contact on the touch-sensitive surface unit  2604 ; in response to the break in contact of the user contact on the touch-sensitive surface unit  2604 , determine (e.g., with the determining unit  2614 ) whether there are less than two occupied locations adjacent to the second location; and in accordance with a determination that there are less than two occupied locations adjacent to the second location: determine (e.g., with the determining unit  2614 ) a third location on the hexagonal grid having at least two adjacent locations that are occupied; and enable movement (e.g., with the movement enabling unit  2616 ) of the display of the first application icon to the third location on the hexagonal grid. 
     In some embodiments, the third location is a location on the hexagonal grid nearest to the second location that is adjacent to at least two occupied locations. 
     In some embodiments, translating the display of the first application icon from the first location results in an unoccupied location on the hexagonal grid at the first location, and the processing unit  2606  is further configured to determine (e.g., with the determining unit  2614 ) whether the unoccupied location is adjacent to six application icons, and in accordance with a determination that the unoccupied location is adjacent to six application icons: determine (e.g., with the determining unit  2614 ) a configuration of the plurality of application icons without an unoccupied location adjacent to six application icons and enable transition (e.g., with the transition enabling unit  2618 ) of the display of the plurality of application icons to the determined configuration, wherein enabling transitioning of the display of the plurality of application icons to the determined configuration displaces no application icon except the first application icon by more than one location on the hexagonal grid. 
     In some embodiments, the processing unit  2606  is further configured to, in accordance with a determination that the unoccupied location is not adjacent to six application icons, enable maintenance (e.g., with the maintenance enabling unit  2620 ) of the display of the plurality of application icons. 
     In some embodiments, transitioning the display of the plurality of application icons to the determined configuration reduces a sum of the distances of the application icons from the origin of the hexagonal grid, excluding the distance of the first application icon. 
     In some embodiments, the processing unit  2606  is further configured to detect (e.g., with the detecting unit  2610 ) a first input on the touch-sensitive surface unit  2604 , and in response to detecting the first input, cause (e.g., with the causing unit  2622 ) the processing unit  2606  to operate in the user interface reconfiguration mode. 
     In some embodiments, the first input is a first contact detected at a position corresponding to one of the plurality of application icons. 
     In some embodiments, the processing unit  2606  is further configured to determine (e.g., with the determining unit  2614 ) whether the duration of the first contact exceeds a predetermined threshold, and the processing unit  2606  is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the first contact exceeds the predetermined threshold. 
     In some embodiments, the processing unit  2606  is further configured to, in response to detecting the first input and in accordance with a determination that the duration of the first contact does not exceed the predetermined threshold, launch (e.g., with the launching unit  2624 ) the application program corresponding to the application icon at the position of the contact. 
     In some embodiments, the first input is the user contact. 
     In some embodiments, the touch-sensitive surface unit  2604  comprises one or more sensors to detect the intensity of contacts with the touch-sensitive surface unit  2604 , and the processing unit  2606  is further configured to detect (e.g., with the detecting unit  2610 ) a first touch on the touch-sensitive surface unit  2604 , determine (e.g., with the determining unit  2614 ) whether the touch has a characteristic intensity above a threshold intensity, and in accordance with a determination that the characteristic intensity is above the threshold intensity, cause (e.g., with the causing unit  2622 ) the processing unit  2606  to operate in the user interface reconfiguration mode. 
     The operations described above with reference to  FIG. 18  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 26 . For example, displaying operation  1802 , detecting operations  1804 ,  1806 , and  1810 , translating operation  1808 , determining operations  1812  and  1814  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     In accordance with some embodiments,  FIG. 27  shows a functional block diagram of an electronic device  2700  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 27  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 27 , an electronic device  2700  includes a display unit  2702  configured to display a graphic user interface, a touch sensitive surface unit  2704  configured to receive contacts, and a processing unit  2706  coupled to the display unit  2702  and the touch-sensitive surface unit  2704 . In some embodiments, the processing unit includes a display enabling unit  2708 , a detecting unit  2710 , a translation enabling unit  2712 , a determining unit  2714 , a transition enabling unit  2716 , and optionally, a causing unit  2718 , and a launching unit  2720 . 
     The processing unit  2706  is configured to enable display (e.g., with the display enabling unit  2708 ) of, on the display unit  2702 , a plurality of application icons in a user interface reconfiguration mode for reconfiguring the application icons on the display unit  2702 , the application icons arranged in a first configuration, where the application icons occupy respective locations on a hexagonal grid in relation to an origin, and where the application icons have corresponding ranks based on their respective locations in relation to the origin. The processing unit  2706  is further configured to detect (e.g., with the detecting unit  2710 ) a user contact on the touch-sensitive surface unit  2704  at a first position corresponding to a first application icon at a first location on the hexagonal grid; while continuing to detect the user contact, detect (e.g., with the detecting unit  2710 ) movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive surface unit  2704 , the second position corresponding to a second application icon at a second location on the hexagonal grid; in response to detecting movement of the user contact from the first position to the second position: enable translation (e.g., with the translation enabling unit  2712 ) of the display of the first application icon from the first location to the second position, determine (e.g., with the determining unit  2714 ) a second configuration of the application icons based on the first location and the second location, and enable transition (e.g., with the transition enabling unit  2716 ) of the display of the application icons from the first configuration to the second configuration, where, in the second configuration, no application icon except the first application icon is displaced by more than one location relative to the first configuration, and enabling transition of the display of the application icons from the first configuration to the second configuration comprises moving the display of the second application icon to a third location adjacent to the second location and moving a display of a third application icon to the first location from a fourth location adjacent to the first location. 
     In some embodiments, the rank corresponding to an application icon is the minimum number of discrete steps along locations on the hexagonal grid that can be taken to move from the origin to the location of the application icon. 
     In some embodiments, application icons having a rank in the first configuration lower than the rank of the first location and lower than the rank of the second location are displayed in the same location in the second configuration as in the first configuration. 
     In some embodiments, the second location has a higher rank than the first location, and the third location has a lower rank than the second location. 
     In some embodiments, the fourth location has a higher rank than the first location. 
     In some embodiments, the fourth location has a rank equal to the rank of the first location. 
     In some embodiments, the second location has a rank equal to the rank of the first location, and the third location has a rank equal to the rank of the second location. 
     In some embodiments, the fourth location has a rank equal to the rank of the first location. 
     In some embodiments, the second location has a rank less than the rank of the first location. 
     In some embodiments, the third location has a rank greater than the rank of the second location, and the fourth location has a rank equal to the rank of the first location. 
     In some embodiments, the third location has a rank equal to the rank of the second location, and the fourth location has a rank less than the rank of the first location. 
     In some embodiments, the third location and the fourth location are the same. 
     In some embodiments, the third location and the fourth location are different. 
     In some embodiments, the second configuration does not include an unoccupied location that is adjacent to six application icons. 
     In some embodiments, the second configuration does not include an application icon that is adjacent to less than two other application icons. 
     In some embodiments, if the first location is not the origin, the application icon positioned at the origin in the first configuration is positioned at the origin in the second configuration. 
     In some embodiments, in the first configuration and the second configuration, there is no application icon that is adjacent only to application icons of equal or higher rank. 
     In some embodiments, the processing unit  2706  is further configured to detect (e.g., with the detecting unit  2710 ) a first input on the touch-sensitive surface unit  2704 , and in response to detecting the first input, cause (e.g., with the causing unit  2718 ) the processing unit  2706  to operate in the user interface reconfiguration mode. 
     In some embodiments, the first input is a first contact detected at a position corresponding to one of the plurality of application icons. 
     In some embodiments, the processing unit  2706  is further configured to determine (e.g., with the determining unit  2714 ) whether the duration of the first contact exceeds a predetermined threshold, where the processing unit  2706  is caused to operate in the user interface reconfiguration mode in response to detecting the first input and in accordance with a determination that the duration of the first contact exceeds the predetermined threshold. 
     In some embodiments, the processing unit  2706  is further configured  2706  to, in response to detecting the first input and in accordance with a determination that the duration of the first contact does not exceed the predetermined threshold, launch (e.g., with the launching unit  2720 ) the application program corresponding to the application icon at the position of the contact. 
     In some embodiments, the first input is the user contact. 
     In some embodiments, the touch-sensitive surface unit  2704  comprises one or more sensors to detect the intensity of contacts with the touch-sensitive surface unit  2704 , and the processing unit  2706  is further configured to detect (e.g. with the detecting unit  2710 ) a first touch on the touch-sensitive surface unit  2704 , determine (e.g., with the determining unit  2714 ) whether the touch has a characteristic intensity above a threshold intensity, and in accordance with a determination that the characteristic intensity is above the threshold intensity, cause (e.g., with the causing  2718 ) the processing unit  2706  to operate in the user interface reconfiguration mode. 
     The operations described above with reference to  FIG. 19  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 27 . For example, displaying operation  1902 , detecting operations  1904  and  1906 , and translating operation  1908  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     In accordance with some embodiments,  FIG. 28  shows a functional block diagram of an electronic device  2800  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 28  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 28 , an electronic device  2800  includes a display unit  2802  configured to display a graphic user interface, a touch sensitive surface unit  2804  configured to receive contacts, and a processing unit  2806  coupled to the display unit  2802  and the touch-sensitive surface unit  2804 . In some embodiments, the processing unit includes a display enabling unit  2808 , a detecting unit  2810 , a causing unit  2812 , and optionally, a removal enabling unit  2814  and an update enabling unit  2816 . 
     The processing unit  2806  is configured to enable display (e.g., with the display enabling unit  2808 ) of one or more application icons in a hexagonal arrangement, detect (e.g., with the detecting unit  2810 ) a first input on the touch-sensitive surface unit  2804 , and in response to the first input, cause (e.g., with the causing unit  2812 ) the processing unit  2806  to operate in a user interface reconfiguration mode for reconfiguring the application icons on the display unit  2802  and cause (e.g., with the causing unit  2812 ) the display of the first application icon to fluctuate in size. 
     In some embodiments, the fluctuation includes an oscillation about an average size. 
     In some embodiments, the display of the first application icon fluctuates between a first size and a second size. 
     In some embodiments, the center of the first application icon remains fixed on the display unit  2802  during the fluctuation. 
     In some embodiments, the displayed size of the first application icon continues to fluctuate while the processing unit  2806  remains in the user interface reconfiguration mode. 
     In some embodiments, the fluctuation in size is animated to simulate that the first application icon is pulsing. 
     In some embodiments, when the processing unit  2806  is operating in the user interface reconfiguration mode, the first application icon includes a deletion region indicating that the application icon is deletable. 
     In some embodiments, the processing unit  2806  is further configured to detect (e.g., with the detecting unit  2810 ), while the processing unit  2806  is in the a user interface reconfiguration mode, a second input corresponding to a selection of the deletion region, and in response to detecting the second input, enable removal (e.g., with the removal enabling unit  2814 ) of the display of the first application icon. 
     In some embodiments, the processing unit  2806  is further configured to detect (e.g., with the detecting unit  2810 ), while the processing unit  2806  is in the a user interface reconfiguration mode, a second input corresponding to a selection of the deletion region and, in response to detecting the second input, enable display (e.g., with the display enabling unit  2808 ) of a deletion confirmation affordance. 
     In some embodiments, the processing unit  2806  is further configured to detect (e.g., with the detecting unit  2810 ) a third input corresponding to a selection of the deletion confirmation affordance, and in response to detecting the third input, enable removal (e.g., with the removal enabling unit  2814 ) of the display of the first application icon. 
     In some embodiments, the processing unit  2806  is further configured to detect (e.g., with the detecting unit  2810 ), while the processing unit is in the user interface reconfiguration mode, a fourth input, and in response to detecting the fourth input, cause (e.g., with the causing unit  2812 ) the processing unit  2806  to exit the user interface reconfiguration mode. 
     In some embodiments, the processing unit  2806  is further configured to detect (e.g., with the detecting unit  2810 ), while the processing unit  2806  is in the a user interface reconfiguration mode, a user contact on the touch-sensitive surface unit  2804  at a first position corresponding to a first application icon; while continuing to detect the user contact, detect (e.g., with the detecting unit  2810 ) movement of the user contact from the first position to a second position without a break in contact of the user contact on the touch-sensitive surface unit  2804 ; and in response to detecting the movement of the user contact, enable display (e.g., with the display enabling unit  2808 ) of an enlarged view of a portion of the displayed screen, wherein the portion includes an area surrounding the second position. 
     In some embodiments, the processing unit  2806  is further configured to enable updating (e.g., with the update enabling unit  2816 ) of the display of the enlarged view as the user contact is moved along the touch-sensitive surface unit  2804 . 
     In some embodiments, the enlarged view includes a circular display of the portion of the displayed screen. 
     In some embodiments, the enlarged view is displayed above the second position on the touch-sensitive surface unit  2804 . 
     The operations described above with reference to  FIG. 20  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 28 . For example, displaying operation  2002 , detecting operation  2004 , and causing operation  2006  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     In accordance with some embodiments,  FIG. 29  shows a functional block diagram of an electronic device  2900  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 29  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 29 , an electronic device  2900  includes a display unit  2902  configured to display a graphic user interface, a touch sensitive surface unit  2904  configured to receive contacts, and a processing unit  2906  coupled to the display unit  2902  and the touch-sensitive surface unit  2904 . In some embodiments, the processing unit includes a display enabling unit  2908 , a detecting unit  2910 , a determining unit  2912 , and a removal enabling unit  2914 . 
     The processing unit  2906  is configured to enable display (e.g., with the display enabling unit  2908 ) of one or more application icons in a hexagonal arrangement, detect (e.g., with the detecting unit  2910 ), on the touch-sensitive surface unit  2904 , a touch corresponding to a selection of a first application icon corresponding to a respective application; determine (e.g., with the determining unit  2912 ) whether the touch has a characteristic intensity above a threshold intensity; and in accordance with a determination that the characteristic intensity is above the threshold intensity, enable removal (e.g., with the removal enabling unit  2914 ) of the display of the selected icon. 
     The operations described above with reference to  FIG. 21  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 29 . For example, displaying operation  2102 , detecting operation  2104 , determining operation  2106 , and removing operation  2108  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     In accordance with some embodiments,  FIG. 30  shows a functional block diagram of an electronic device  3000  configured in accordance with the principles of the various described embodiments. The functional blocks of the device are, optionally, implemented by hardware, software, or a combination of hardware and software to carry out the principles of the various described embodiments. It is understood by persons of skill in the art that the functional blocks described in  FIG. 30  are, optionally, combined or separated into sub-blocks to implement the principles of the various described embodiments. Therefore, the description herein optionally supports any possible combination or separation or further definition of the functional blocks described herein. 
     As shown in  FIG. 30 , an electronic device  3000  includes a display unit  3002  configured to display a graphic user interface, a touch sensitive surface unit  3004  configured to receive contacts, and a processing unit  3006  coupled to the display unit  3002  and the touch-sensitive surface unit  3004 . In some embodiments, the processing unit includes a display enabling unit  3008 , a detecting unit  3010 , a determining unit  3012 , and a removal enabling unit  3014 . 
     The processing unit  3006  is configured to enable display (e.g., with the display enabling unit  3008 ) of one or more application icons in a hexagonal arrangement; detect (e.g., with the detecting unit  3010 ), on the touch-sensitive surface unit  3004 , a first touch; determine (e.g., with the determining unit  3012 ) whether the touch has a characteristic intensity above a threshold intensity; and in accordance with a determination that the characteristic intensity is above the threshold intensity, enable display (e.g., with the display enabling unit  3008 ) of a deletion confirmation affordance. 
     In some embodiments, the deletion confirmation affordance corresponds with a first application icon, and the processing unit  3006  is further configured to detect (e.g., with the detecting unit  3010 ) a second touch corresponding to a selection of the deletion confirmation affordance; and in response to detecting the second touch, enable removal (e.g., with the removal enabling unit  3014 ) of the display of the first application icon. 
     In some embodiments, the electronic device is a wearable electronic device. 
     The operations described above with reference to  FIG. 22  are, optionally, implemented by components depicted in  FIGS. 1A-1B  or  FIG. 30 . For example, displaying operations  2202  and  2206 , detecting operation  2204 , and determining operation  2206  are, optionally, implemented by event sorter  170 , event recognizer  180 , and event handler  190 . Event monitor  171  in event sorter  170  detects a contact on touch-sensitive display  112 , and event dispatcher module  174  delivers the event information to application  136 - 1 . A respective event recognizer  180  of application  136 - 1  compares the event information to respective event definitions  186 , and determines whether a first contact at a first location on the touch-sensitive surface (or whether rotation of the device) corresponds to a predefined event or sub-event, such as selection of an object on a user interface, or rotation of the device from one orientation to another. When a respective predefined event or sub-event is detected, event recognizer  180  activates an event handler  190  associated with the detection of the event or sub-event. Event handler  190  optionally uses or calls data updater  176  or object updater  177  to update the application internal state  192 . In some embodiments, event handler  190  accesses a respective GUI updater  178  to update what is displayed by the application. Similarly, it would be clear to a person having ordinary skill in the art how other processes can be implemented based on the components depicted in  FIGS. 1A-1B . 
     The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in view of the above teachings. The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated. 
     Although the disclosure and examples have been fully described with reference to the accompanying figures, it is to be noted that various changes and modifications will become apparent to those skilled in the art. Such changes and modifications are to be understood as being included within the scope of the disclosure and examples as defined by the appended claims.

Metadata:
Filing Date: 20150306
Publication Date: 20181030
Grant Date: 20181030
Priority Date: 20140902
Inventors: KOCIENDA, KENNETH
KARUNAMUNI, CHANAKA G.
BUTCHER, GARY IAN
CHAUDHRI, IMRAN
EDWARDS, DYLAN ROSS
GUZMAN, Aurelio
IVE, JONATHAN P.
Assignee: APPLE INC
CPC Classifications: [{"code": "G06F3/04817", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/0488", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/04842", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0482", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0488", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0488", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/04817", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/04817", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/04817", "inventive": true, "first": true, "tree": "[]"}, {"code": "G06F3/0482", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/04842", "inventive": true, "first": false, "tree": "[]"}, {"code": "G06F3/0488", "inventive": true, "first": false, "tree": "[]"}]
Family ID: 52727422