Is the Activity being destroyed because orientation changed or because app is closing?

Question

I have an Activity that starts an AsyncTask. The activity is allowed to show in Portrait or Landscape orientation. When the orientation is

Answer 1

you can use isFinishing() method , to check if the activity is going to be killed or onDestroy() method just called due to change in orientation

@Override
protected void onDestroy() {
    super.onDestroy();
    if(isFinishing()){
        Log.i("DEBUG", "App will Terminate ");
    }else{
        Log.i("DEBUG", "Orientation changed");
    }

}