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Question

I'm implementing this codes , according to Google Developers Guide .

Everything is ok , I can receive notification datas successfully.

If you check GCMIntentService.java file 70th line, it's echoing this lines to LogCat :

 I/GCM Demo(6653): Working... 1/5 @ 8656981
 I/GCM Demo(6653): Working... 2/5 @ 8657982
 I/GCM Demo(6653): Working... 3/5 @ 8658983
 I/GCM Demo(6653): Working... 4/5 @ 8659983
 I/GCM Demo(6653): Working... 5/5 @ 8660984
 I/GCM Demo(6653): Completed work @ 8661985
 I/GCM Demo(6653): Received: Bundle[{msg=messagehere, from=SENDERIDHERE, android.support.content.wakelockid=3, collapse_key=do_not_collapse}]

So my device is receiving notification data, but there is no visible notification in device's status bar. Nothing happening.

Can you tell me why these push notifications aren't displayed on my device, only in LogCat?

UPDATES

1. Manifest file

2. This is my sendNotification() method :

    private void sendNotification(String msg) { mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE); PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, MainActivity.class), 0); NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this) .setContentTitle("GCM Notification") .setStyle(new NotificationCompat.BigTextStyle() .bigText(msg)) .setContentText(msg); mBuilder.setContentIntent(contentIntent); mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build()); } 

Answer 1

Could you try this method.... This one is working for me. Although its almost same as yours...

private void sendNotification(String msg)
{
    int uniqueId = (int) (System.currentTimeMillis() & 0xfffffff);
    mNotificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
    Intent intent = new Intent(this, MainActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
            | Intent.FLAG_ACTIVITY_SINGLE_TOP
            | Intent.FLAG_ACTIVITY_NEW_TASK);
    PendingIntent contentIntent = PendingIntent.getActivity(this, uniqueId,
            intent, PendingIntent.FLAG_UPDATE_CURRENT);

    NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.drawable.ic_launcher)
            .setContentTitle("Hello")
            .setStyle(new NotificationCompat.BigTextStyle().bigText("Hello"))
            .setContentText("This is your notification content")
            .setAutoCancel(true)
    mBuilder.setContentIntent(contentIntent);

    mNotificationManager.notify(uniqueId, mBuilder.build());
}

Waking up the phone is quite different matter. You can do it using a WakeLock this way:

When you set your notification:

WakeLock screenOn = ((PowerManager)getSystemService(POWER_SERVICE)).newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "test");
screenOn.acquire();

And yes, DON'T FORGET TO release the wakelock when you don't need it anymore (may be after 5 seconds or on tap of notificaton; as required per your need):

screenOn.release();

Answer 2

It looks like (in your android manifest file) that the service may not have been enabled

Please try replacing <service android:name=".GcmIntentService" /> with:

<service android:enabled="true" android:name=".GcmIntentService" />