title: Activity with action bar but without title?
body: <p>How to achieve this? It seems very simple, but actually it's not easy to do it in acceptable way. I tried this:</p>
  
  <p>1) in AndroidManifest I set activity theme to Theme.NoTitleBar. However, in my Activity then getActionBar() method returns null => UNUSABLE</p>
  
  <p>2) I hide title programatically in my activity by calling:</p>
  
  <pre><code>actionbar.setDisplayShowTitleEnabled(false);
  actionbar.setDisplayShowHomeEnabled(false);
  </code></pre>
  
  <p>and it helped, but there's a little delay, so I can see title bar maybe quarter of second after activity launch, then it disappears. It looks really lame.</p>
  
  <p>Are there other options?</p>