title: Transition Drawable for actionbar in Android
body: <p>Is it possible to use transition drawable for Actionbar and how? 
  I should use an xml like:</p>
  
  <pre><code> &lt;xml version="1.0" encoding="utf-8"/&gt;
   &lt;transition xmlns:android="http://schemas.android.com/apk/res/android"/&gt;
   &lt;item android:drawable="@drawable/first_image"/&gt;
   &lt;item android:drawable="@drawable/second_image"/&gt;
   &lt;/transition&gt;
  </code></pre>
  
  <p>but how I continue from here?</p>