Android onStop/onDestroy - when might these be used?

Question

Looking at the Activity Life Cycle diagram, I notice that onPause() and onStop() can both lead to the \"process\" being killed. This would require

Answer 1

Another example would be to register and unregister a broadcast receiver.

Note that usually these things are placed in onResume and onPause, the difference is subtle though, onResume/onPause are called when the activity gets placed behind another activity, onStart/onStop are called when the activity is no longer visible in the screen.