I don't see why you would even override onKeyDown
if you are just going to finish();
Just combine them in onDestroy
. Unless I am missing something, your post is fairly vague.
Also, just on a personal note, I immediately uninstall your app if it posts ads to my notification bar. I'm not sure if that is what this does, but I know airpush is notorious for that. Just a heads up, Some people don't like that.