title: Actionbar visibility listener
body: <p>Is there any way to listen if <code>actionbar</code> is invisible or visible.(a callback/listener method). <code>"isShowing()"</code> not working in my cases.</p>
  
  <p>My Case :
  I've a YouTube player in full screen mode with overlaying an actionbar (android.support.v7.app.ActionBar) and a dialog fragment added at bottom of the screen. Now, I need a listener to hide and show that dialog fragment, but there have no such listener in youtube player api. So, I'm trying to get it through inheriting actionbar visibility. Unfortunately, I couldn't find a listener if actionbar is now Visible or Invisible. </p>