Theme.Black.NoTitleBar.Fullscreen not working on screen lock
<p>In my android application i have declared my screens as full screen in the manifest as below  </p>

<pre><code>&lt;activity android:name=".ContentDisplay"  
android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"    android:configChanges="keyboardHidden" android:screenOrientation="portrait"/&gt;
</code></pre>

<p>It works fine normally but when the screen gets locked a black layer appears on top shifting the screen downwards.Attached is the images.  </p>

<p><img src="http://i.stack.imgur.com/40lpK.png" alt="After Screen Lock"> </p>

<p><img src="http://i.stack.imgur.com/gej9Q.png" alt="Before screen Lock"></p>

<p>Please let me know what i can do for resolving this. </p>

<p>Please forward your valuable suggestions.</p>
