Example implementation of a GCM Intent Service receiver

GCMIntentService.java

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.preference.PreferenceManager;
import android.util.Log;

import com.apphoshies.core.services.DeviceToken;
import com.google.android.gcm.GCMBaseIntentService;

public class GCMIntentService extends GCMBaseIntentService {
        private static int count = 0;

	/**
	 * @see com.google.android.gcm.GCMBaseIntentService#onError(android.content.Context, java.lang.String)
	 */
	@Override
	protected void onError(Context arg0, String error) {
	       Log.d("ApphoshiesFramework", "onError: " + error);
	}

	/**
	 * @see com.google.android.gcm.GCMBaseIntentService#onRegistered(android.content.Context, java.lang.String)
	 */
	@Override
	protected void onRegistered(Context context, String regId) {
		Log.d("ApphoshiesFramework", "onRegistered: " + regId);
		DeviceToken.registerDeviceForGCM(context, regId);
	}

	/**
	 * @see com.google.android.gcm.GCMBaseIntentService#onUnregistered(android.content.Context, java.lang.String)
	 */
	@Override
	protected void onUnregistered(Context context, String regId) {
		Log.d("ApphoshiesFramework", "onUnregistered: " + regId);
                DeviceToken.unregisterDeviceFromGCM(context, regId);
	}

	/**
	 * @see com.google.android.gcm.GCMBaseIntentService#onMessage(android.content.Context, android.content.Intent)
	 */
	@Override
	protected void onMessage(Context context, Intent intent) {
		Log.d("ApphoshiesFramework", "onMessage");

                // Please customize!

		// This is how to get values from the push message (data)
                String message = intent.getStringExtra("message");
		long timestamp = intent.getLongExtra("timestamp", -1);

	        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
	        Notification note = new Notification(R.drawable.dialog, "App Notification", System.currentTimeMillis());
		Intent notificationIntent = new Intent(context, Main.class);
	        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
	               Intent.FLAG_ACTIVITY_SINGLE_TOP);
	        PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
	        note.setLatestEventInfo(context, "App Notification", message, pendingIntent);
	        note.number = count++;
	        note.defaults |= Notification.DEFAULT_SOUND;
		note.defaults |= Notification.DEFAULT_VIBRATE;
		note.defaults |= Notification.DEFAULT_LIGHTS;
		note.flags |= Notification.FLAG_AUTO_CANCEL;
	        notificationManager.notify(0, note);
	}
}

GCMBaseIntentService is part of Google Cloud Messaging which is deprecated
http://stackoverflow.com/questions/11472496/where-is-com-google-android-gcm-gcmbaseintentservice#comment-29077784