+onClick to button +sendMessage method

step 10  and a bit of editing to make the link number match the step
number

https://developer.android.com/training/basics/firstapp/starting-activity.html#RespondToButton

step 11 - specific conditions to match the button onClick event
+import +EXTRA_MESSAGE +intent data

https://developer.android.com/training/basics/firstapp/starting-activity.html#BuildIntent

steps 12 to 14 - Ctrl+Shft+O adds import statements for classes
+startActivity

step 15 - just added the line startActivity(intent);
+DisplayMessage activity

https://developer.android.com/training/basics/firstapp/starting-activity.html#CreateActivity

step 16 to 19