reformatted the layout so that the listview is on top. also changed the weights to make the list view larger
changed showOwnMessage method name to showMessage. Also tried adding a 160 char limit, doesn't quite work (doesn't send, but still shows it i.e. it shows it once)
Fixed the char limit by adding an if statement, which ensures that the arraylist storedMessages only adds message if it is less than or equal to 160 chars