Connect my exist server to GCM

问题

I developed a client on android app and a server, but now I discovered the GMC- "Google Cloud Messaging for Android"

Is there any way to connect the GCM to my server, without changing everything?

The client send data to the server with socket, and what I need is that the server will send the data to the GCM, and the GCM will send the data to all the clients.

I don't need the clients to send data to the GCM, all what I need is :

client -(socket)--> server ---> GCM ---> clients

Someone have any idea how to do that?

Thanks in advance!

回答1:

You can send GCM messages from your Java Server. The simplest way is to use the server library supplied by Google (gcm-server.jar).

The code for sending a message is as simple as :

Sender sender = new Sender(apiKey);
Message message = new Message.Builder()
    .delayWhileIdle(true)
    .addData("key1", "value1")
    .addData("key2", "value2")
    .build();
Result result = sender.send(message, registrationId, numOfRetries);

In addition, you'd have to check the result, to see if your message was accepted or rejected by GCM server.

This example shows how to send a message to a single device. There's a similar way to send the same message to multiple devices.

Finally, you'll have to implement some web service that accepts a registration ID from your app, and saves it in your DB.

来源：https://stackoverflow.com/questions/24918842/connect-my-exist-server-to-gcm