Push Notifications using GCM in Android Studio

According to Google’s documentations “Google Cloud Messaging (GCM) is a free service that enables developers to send messages between servers and client apps. This includes downstream messages from servers to client apps, and upstream messages from client apps to servers”.┬áThe GCM service handles all aspects of queueing of messages and delivery to the target Android application running on the target device.

gcm

Source : Google

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