Android:GCM PendingEvent在三星note 2中不起作用

我可以在所有设备中接收gcm通知。但是，当我单击通知时，它并没有导航到我在意图中给出的相应活动。我没有为这一意图设置任何标志

它在所有其他设备中工作正常

这是我的密码

 Intent notificationIntent = new Intent(GcmIntentService.this, NotificationActivity.class);
 PendingIntent contentIntent = PendingIntent.getActivity(GcmIntentService.this, 0, notificationIntent, 0);
 mBuilder = new NotificationCompat.Builder(this)
                        .setSmallIcon(R.drawable.gcm)
                        .setContentTitle("New messages")
                        .setStyle(new NotificationCompat.BigTextStyle()
                                .bigText(msg))
                        .setDefaults(Notification.DEFAULT_SOUND)
                        .setContentText(msg);
    mBuilder.setContentIntent(contentIntent);
    mBuilder.setAutoCancel(true);
    mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());

我的舱单

 <receiver
        android:name="mellotv.com.gcm.GcmBroadcastReceiver"
        android:permission="com.google.android.c2dm.permission.SEND">
        <intent-filter>
            <action android:name="com.google.android.c2dm.intent.RECEIVE" />
            <action android:name="com.google.android.c2dm.intent.REGISTRATION" />
            <category android:name="com.example.gcm" />
        </intent-filter>
 </receiver>

我已经检查了设备api，它是19

有人能帮我解决这个问题吗