android.intent.action.SCREEN_OFF
<p>I am trying to detect Screen backlight On / Off.</p>

<p>I've found <code>android.intent.action.SCREEN_OFF</code> related its event. </p>

<p>But I don't know how to use this. </p>

<p>Can you suggest me about how to detect screen backlight on / off ? </p>

<p>I missing some example or sample code. </p>

<p>Thanks in advance.</p>
