How to have LED Light Notification?
<p>Update: I am reworking the original post for compatibility before Android 3.0.</p>

<p>I am trying to create a simple notification and everything but the light works great.  I do have the screen off when the notification fires. Using this deprecated code sound and vibrations works on Android 4.0 (Galaxy Nexus) and Android 2.3 (HTC EVO).  </p>

<ul>
<li>On the 2.3 HTC EVO the lights also work.</li>
<li><p>On the 4.0 Galaxy Nexus the lights do not work.</p>

<pre><code>Notification notification = 
        new Notification(R.drawable.ic_launcher, "My Ticker!",System.currentTimeMillis());
notification.setLatestEventInfo(context, "My Title", "My Message", pendingIntent);
notification.defaults |= Notification.DEFAULT_SOUND;
notification.defaults |= Notification.DEFAULT_VIBRATE;

//notification.defaults |= Notification.DEFAULT_LIGHTS;

notification.ledARGB = 0xff00ff00;
notification.ledOnMS = 300;
notification.ledOffMS = 1000;
notification.flags |= Notification.FLAG_SHOW_LIGHTS;

notification.flags |= Notification.FLAG_AUTO_CANCEL;
</code></pre></li>
</ul>

<p>I have also tried newer APIs that are not part of the v4 compatibility library, so I could only test this on the Galaxy Nexus.  Vibration and Sound works again but not lights.</p>

<pre><code>Notification.Builder builder = new Notification.Builder(context);
        builder.setContentIntent(pendingIntent)
            .setSmallIcon(R.drawable.ic_launcher)
            .setTicker("My Ticker")
            .setWhen(System.currentTimeMillis())
            .setAutoCancel(true)
            .setDefaults(Notification.DEFAULT_VIBRATE | Notification.DEFAULT_SOUND | Notification.FLAG_SHOW_LIGHTS)
            .setLights(0xff00ff00, 300, 100)
            .setContentTitle("My Title 1")
            .setContentText("My Text 1");
        Notification notification = builder.getNotification();
</code></pre>

<p>I have now tested this on two stock Galaxy Nexus phones and the light works on neither.  The screen IS off when I run the tests and all other apps on the phones trigger the lights without issue.</p>
