title: Multiple activities, identical onCreateOptionsMenu, onOptionsItemSelected and onKeyDown. Can I somehow reuse the code?
body: <p>Multiple activities have identical  onCreateOptionsMenu, onOptionsItemSelected and onKeyDown. When I implement a change, I have to do it in every activity (work time * activity count). Is there a way to reuse the code (for example write all of the three methods in one place and put down a reference to it in every activity)?</p>