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”. The GCM service handles all aspects of queueing of messages and delivery to the target Android application running on the target device.
In this post we will discuss about Inbox style notification like Whatsapp, Gmail and other chat applications are having.
Android notification will be displayed in Notification area and to see the details regarding the notification, the user can expand it in by open the Notification drawer.
Note : Inbox style notification is not available on platforms prior to Android 4.1.