Android GCM and multiple tokens

Question

I register in GCM with GoogleCloudMessaging.getInstance(context); and save received token on device. Then send it to server and it\'s associated with user account. If I uni

Answer 1

first when you send notification send user id with it and ask if id in sharedpreference == comming or no

if you send notifications to all users and may be some one get 2 notifications while he should only get one do that

Create file on your server and with any number say 0 then when you want to send notification send this numebr with it then add one to this number++ to be new number in the next notification same with every new one

In android application add variable and let this variable = the comming variable from the server after add the notification but you need to ask if(number_in_your_service!=server_number) //add notification

any number of notifications you send just one will appear

public class GcmIntentService extends IntentService {
  public static int openintent;
  public static final int NOTIFICATION_ID = 1;
  private static final String TAG = "GcmIntentService";

  private static String number_in_your_service="somethingneversend";
  NotificationCompat.Builder builder;

  public GcmIntentService() {
    super("GcmIntentService");
  }

  @Override
  protected void onHandleIntent(Intent intent) {
    Bundle extras = intent.getExtras();
    GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
    String messageType = gcm.getMessageType(intent);

    if (!extras.isEmpty()) { // has effect of unparcelling Bundle
      if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
      } else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED.equals(messageType)) {
        // If it's a regular GCM message, do some work.
      } else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE.equals(messageType)) {
        // This loop represents the service doing some work.
        for (int i = 0; i < 5; i++) {
          Log.i(TAG, "Working... " + (i + 1) + "/5 @ " + SystemClock.elapsedRealtime());
          try {
            Thread.sleep(100);
          } catch (InterruptedException e) {
          }
        }
        Log.i(TAG, "Completed work @ " + SystemClock.elapsedRealtime());
        // Post notification of received message.
        sendNotification(extras);
        Log.i(TAG, "Received: " + extras.toString());
      }
    }
    // Release the wake lock provided by the WakefulBroadcastReceiver.
    GcmBroadcastReceiver.completeWakefulIntent(intent);
  }

  private void sendNotification(Bundle extras) {

    if((extras.getString("server_number")).equals(number_in_your_service)) {

      Intent intent = new Intent(this, Main_Page_G.class);
      intent.putExtra("frame",100);
      intent.putExtra("bundle",extras);
      final PendingIntent contentIntent = PendingIntent.getActivity(this,
            120, intent, PendingIntent.FLAG_UPDATE_CURRENT);
      NotificationManager mNotificationManager;
      NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
            GcmIntentService.this).setContentTitle("name")
            .setContentText("content")
            .setDefaults(Notification.DEFAULT_SOUND)
            .setContentInfo("Test")
            .setSmallIcon(R.drawable.rehablogo2)
            .setAutoCancel(true);
      mBuilder.setContentIntent(contentIntent);
      mNotificationManager = (NotificationManager) GcmIntentService.this
            .getSystemService(Context.NOTIFICATION_SERVICE);
      mNotificationManager.notify(id, mBuilder.build());
      id=Integer.parseInt(extras.getString("id"));
    }
  }
}