Android Activity Life Cycle

Activity serves the entry point for the app's interaction with user.

Life cycle of an Activity is managed by the help of specific methods which defines the stages of the life cycle.

The methods are namely : onCreate(), onStart(), onResume(), onPause(), onStop(), onDestroy().

A convenient way to remember the behaviour of the Activity callback methods is to think of when they're called?relative to when the Activity is running

Case 1: Home Button Pressed

Case 2: Back Button Pressed

Case 3 : When dealing with more than one Activities.

Case 4: When Screen Orientation changes

Navigation to another Activity