Intent registrationIntent = new Intent("com.google.android.c2dm.intent.REGISTER");
registrationIntent.putExtra("app", PendingIntent.getBroadcast(this, 0, new Intent(), 0));
registrationIntent.putExtra("sender", "achalrajpoot1@gmail.com");

public void onReceive(Context context, Intent intent)
{
    if (intent.getStringExtra("error") == null)
    {
        System.out.println("Error in registration ");
    }
}

if (intent.getStringExtra("error") != null) {
        System.out.println("Error in registration ");
}