GCM or Google Cloud Messaging service is offered by google for the android platform to send and receive data using google’s cloud infrastructure.Earlier it is better known an C2DM or Cloud to Device messaging that is used to install the applications from playstore website directly to the android device remotely. Using this service you can send and receive data up to 4kb to any number of android devices at blazing speed. Example: How GCM Works? By default every android device will have the Google cloud messaging services installed.Any application can use the service in order to receive the push notifications. In this tutorial we will show you how to send a message using Google cloud messaging, We need a Client application and server application.Whenever a
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