title: Need your help related to using tab host with custom title
body: <p>With reference to <a href="https://stackoverflow.com/a/4534359/1016544">this</a> post,  I need your suggestion. I have resolved the displaying of custom title bar using that answer. I have implemented buttons in my title bar along with title text. When I try to set <code>onclicklistener</code> on button it gives <code>NullPointerException</code> because the custom title bar xml is set using the tab host activity. </p>