Actually,i have used ramachandru6@gmail.com as a "sender id" in my app and that same id and same password used for getting authentication tocken.but still am getting 401 error. i have spent more than two days.please any one guide me.what i have to do?
IN GCM there is nothing like using id and password for authentication. When you set up your app in GCM it will give one server side token. Use that as a key