Question

in my app I have this code to register to the GCM service:

Server.java

protected void registerToGcm() {
    GCMRegistrar.checkDevice(mContext);
    GCMRegistrar.checkManifest(mContext);
    String regId = GCMRegistrar.getRegistrationId(mContext);
    if ("".equals(regId)) {
        GCMRegistrar.register(mContext, GCMIntentService.SENDER_ID);
    } else {
        registerToServer(regId);
    }
}

GCMIntentService.Java

public static final String SENDER_ID = "1111111111";
@Override
protected void onRegistered(Context context, String regId) {
    Log.d(TAG, "Registered to GCM with regId: " + regId);
    Server.registerToServer(regId);
}

when I run this code, I see in the server that my device is registering twice with 2 different regIds, and when the server sends a push, the device receives 2 messages.

is this a normal thing? is there a way to ensure only one regId?

Answer 1

What do you need to check when you want to register is

GCMRegistrar.checkDevice(getApplicationContext());
GCMRegistrar.checkManifest(getApplicationContext());

deviceToken = GCMRegistrar.getRegistrationId(getApplicationContext());

if (printLog == true)
    Log.i("Home", "Registration id =====  " + deviceToken);
if (deviceToken.equals("")) {
    GCMRegistrar.register(getApplicationContext(), SENDER_ID);
} else {
    if (printLog == true)
        Log.v("Home", "Device Already registered");
}