So I followed Google's first Android app sample. If I taped the send button, it opened up the
DisplayMessageActivity. But upon taped the back button (left arrow) from the DisplayMessageActivity, the
onCreate(Bundle savedInstanceState) of the
MainActivity got called again. It looks like it created a new instance of
MainActivity. I could verify this by setting a bool value in
MainActivity and it was not retained.
How do you go back to the previous instance of
MainActivity (the caller)?