Return to Specific Activity in 2 different Condition when Back button Pressed Kotlin

Question

Activity A,B,C,D .first path is A->C->D .when back button Pressed from D ,it will go like D->C->A. But My requirement is D->A. in same App, I have another condition .second path is A->B->C->D .when back button pressed from D,it will happen like D->C->B->A.But My Requirement is D->A. How to easily Accommodate both requirement in my App ? but note that when click back from C then it should go to B.

Answer 1

Override onBackPressed() in D like this:

@Override
public void onBackPressed() {
    Intent intent = new Intent(this, A.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP|Intent.FLAG_ACTIVITY_SINGLE_TOP);
    startActivity(intent);
    finish();
}

This will remove all activities between D and A from the stack and return to the existing instance of A.

NOTE: This is Java, not Kotlin, but you should be able to figure out how to Kotlinize the code ;-)