Question from the Android test

If I launch a new Activity D',

Activity D is closed (onStop() is called).

Activity D is destroyed (onDestroy() is called).

Then a new instance D' is created (onCreate() is called).

The stack becomes A-B-C-D'

If I launch a new Activity D'.

Nothing happens (no event is called), because the activity D is already at the top of the stack.

The stack remains A-B-C-D.

If I launch a new Activity B'.

Activity D is closed (onStop() is called).

Then a new instance B' is created (onCreate() is called).

The stack becomes A-B-C-D-B'.

If I launch a new Activity B'.

Activity D is closed (onStop() is called).

Activity D is destroyed (onDestroy()).

Activity C is destroyed (onDestroy()).

Instance B is brought to the foreground (onRestart() is called).

The stack becomes A-B.