title: Back to parent view when press on escape
body: <p>I am using ViewFlipper for my application. I trying to make it :
  when user pressed on escape (back) button, it would be back to parent Layout.</p>
  
  <p>In other words, just like this :</p>
  
  <pre><code>             Activity
                  |
   Layout1 -&gt; Layout2 -&gt; Layout3 
   if user pressed on escape, go back to parent:
   Layout1 &lt;- Layout2 &lt;- Layout3
  </code></pre>
  
  <p>How to make it ?</p>
  
  <p>Please advice.</p>
  
  <p>Thanks.</p>