title: Android Action Bar
body: <p>I am looking for an implementation of the ActionBar in Android 2.1 to 2.3.4 where i can dynamically set the contents of the action bar from the particular activity and also the actions on click of the buttons from the action bar.</p>
  
  <p>Is there any open source lib of this sort or can someone help me how to start on building the same.</p>