Question

I use the example provided by goole and I built an client side application to get notifications and a server side, both applications (code) is those provided by google.

I run the application on the client side and I get the registration_id. some huge string, in this format which is below:

APA91bEgguwt98xLbivrXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXLxDalNoEktCSVbOkT0-uFH2FaRnfpkRME2tzuvr0BycMNEhX_Ix1PV_XXXXXXXXXXXXXXXXXXXXXN5hcseY_wA.

This proves me that the client application works. Now the server (java, google example):

public static void main(String[] args) {

        Sender sender = new Sender("AIzaSXXXXXXXXXX_XXXXXXXXXXXXXXXrQOnoGZw");      
        Message message = new Message.Builder()
        .collapseKey("1")
        .timeToLive(3)
        .delayWhileIdle(true)
        .addData("message",
          "this text will be seen in notification bar!!")
        .build();

        try {
            Result result = sender.send(message, "APA91bEgguwt98xLbivrXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXLxDalNoEktCSVbOkT0-uFH2FaRnfpkRME2tzuvr0BycMNEhX_Ix1PV_XXXXXXXXXXXXXXXXXXXXXN5hcseY_wA", 3);
            System.out.println(result.toString());
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
}

This is the server. When I run the server I got as result something like this:
[ messageId=0:1341907115903155%921c249a00000031 ]
but no message on the client and I don’t understand why. What is the meaning of the response I got from server? Is it the success response?

I need help to understand what is wrong?

Answer 1

According to the GCM Documentation:

When a 3rd-party server posts a message to GCM and receives a message ID back, it does not mean that the message was already delivered to the device. Rather, it means that it was accepted for delivery. What happens to the message after it is accepted depends on many factors.

In the best-case scenario, if the device is connected to GCM, the screen is on, and there are no throttling restrictions (see Throttling), the message will be delivered right away.