Question

I add Fragments to my Activity dynamically based on user interaction. When I press the back key, the fragments are popped. However when I press the back key for the fragment which was first added to the stack, the ‘Activity’ shows an empty layout. I would like the Activity to call `finish()’ at this point and disappear. I’ve tried:

@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
    super.onKeyDown(keyCode, event);
    if(keyCode == KeyEvent.KEYCODE_BACK){
        if(getFragmentManager().getBackStackEntryCount()==0){
            finish();
            return true;
        }
    }
    return true;
}

But this has the effect of blocking the back key functionality. Any pointers in the right direction are appreciated.

Answer 1

Change the second return true; to return false; to indicate that you did NOT handle the keypress. This should close the activity when the back stack is empty, and leave it as is otherwise.