Fix for restart on configChanges such as unlock device
<p>I am implementing a fix similar to the one outlined here -</p>

<p><a href="http://stackoverflow.com/questions/8426910/android-activity-restarts-after-unlocking-device">Android Activity restarts after Unlocking device</a></p>

<p>However, I am not sure about the difference between - </p>

<p>difference between </p>

<pre><code>android:configChanges="orientation|keyboard" 
</code></pre>

<p>and </p>

<pre><code>android:configChanges="orientation|keyboard|keyboardHidden"
</code></pre>

<p>Does anyone know the exact difference between the above two attributes in the Activity section in the AndroidManifest?</p>
