Question

I have an activity that makes something and then starts another activity. The first activity has to finish after creating the second. In this case I want it only to end with default onDestroy(). But if user presses back key (Hardware one) while first activity isn’t done I want it to call a function before finishing.
Is there any gentle way to achieve that? I think about overriding default action for back key but is it the only and the most elegant solution?

Answer 1

Overriding onBackPressed method is OK.

public void onBackPressed ()

Called when the activity has detected the user’s press of the back
key. The default implementation simply finishes the current activity,
but you can override this to do whatever you want.

http://developer.android.com/reference/android/app/Activity.html#onBackPressed()

---

public void onBackPressed() {
    // do something.
    super.onBackPressed();
}