Life cycle of Android Activity after pressing Back button

Question

I am little confused between the life cycle of two activities.

Suppose I have Activity A and Activity B.

B is called From A i.e A ----> B.

Answer 1

Activity B will be destroyed and will no longer remain in memory.

For more information please visit the official documentation for android and have a look at the activity life cycle figure.

Once you press the back key the activity's onDestroy() method will be called and the activity will be flushed out of the memory. You will then be required to restart the activity by calling the startActivity() method which will in turn call its onCreate() Method.