Question

I have tried some forum pages and searched through stackoverflow for the same thing, but I did not find the solution.

I have used the below code to generate registration ID for GCM notification. But I get an empty string as a registration ID:

GCMRegistrar.checkDevice(this);
GCMRegistrar.checkManifest(this);

if (GCMRegistrar.isRegistered(this)) {
Log.d(“info”, GCMRegistrar.getRegistrationId(this));
}

regId = GCMRegistrar.getRegistrationId(this);

Log.v("log", " register id oslo : " + regId);

if (regId.equals("")) {
    // replace this with the project ID
    GCMRegistrar.register(this, "718437041388");
    Log.d("info", GCMRegistrar.getRegistrationId(this));
} else {
    Log.d("info", "already registered as" + regId);
}

Please help me with this, tell me if I got anything wrong.

Thank you in advance,
Nirav.

Answer 1

You should not get the registrationId just after GCMRegistrar.register(this, "718437041388");
In fact, do you have a correct GCMIntentService.java which receive the regId?
If yes, you can get the regId from the onRegistered inside GCMIntentService.java

 @Override
    protected void onRegistered(Context context, String registrationId) {
        Log.i(TAG, "Device registered: regId = " + registrationId);
        Log.d("GCMIntentService", "in GCMIntentService");
        displayMessage(context, getString(R.string.gcm_registered));
        ServerUtilities.register(context, registrationId);
    }