title: Android Back button with Fragment Activity?
body: <p>Hi guys i am developing an application with Extending <code>fragment</code> activity,here is my problem when i have used the normal activity is i have used below method.</p>
  
  <pre><code>onKeyDown(KeyEvent.KEYCODE_BACK, newKeyEvent(KeyEvent.ACTION_DOWN,
                                                          KeyEvent.KEYCODE_BACK));
  </code></pre>
  
  <ul>
  <li>For activity what i need to do?</li>
  </ul>
  
  <p>How can i achieve this goal </p>