Google Cloud Messaging (GCM) is a messaging service provided by Google. It allows Android applications to send and receive messages without having to use the native SMS or MMS messaging APIs.
GCM supports the delivery of messages to both native and third-party Android applications.
GCM is integrated with the Android operating system and can be used to send and receive messages from any app on an Android device. GCM also supports push notifications, so you can be alerted when someone sends you a message.
To use GCM, you first need to create a GCM account. After you have created your account, you need to create a message payload. A message payload is a JSON object that describes the message that you want to send.
You can create a message payload by using the gcm.createMessage() API call.
After you have created your message payload, you can send the message using the gcm.sendMessage() API call. The gcm.
sendMessage() call takes two arguments: the message payload and the send message ID. The send message ID is a unique identifier that you will use to track the progress of the message.
GCM also supports Receiving Messages. To receive a message, you first need to create a receive message listener. After you have created the receive message listener, you can use the gcm.receiveMessage() API call to receive the message.
The gcm.receiveMessage() call takes two arguments: the receive message ID and the message payload. The receive message ID is a unique identifier that you will use to track the progress of the message.
If you are using GCM in your Android application, be aware that the service is not intended for use with sensitive data. Your GCM messages are stored on Google’s servers and may be accessed by Google employees. If you require a higher level of security for your data, consider using a different messaging service.
The message payload can be either a byte[] or a JSON object. If the message payload is a JSON object, the object must have a message property.
The message property contains the JSON object that contains the message data.
The GCM library also includes a GCM receiver library. The GCM receiver library allows you to receive GCM messages from other applications.
The GCM receiver library includes a GCM message handler class that you can use to receive GCM messages.
The GCM receiver library also includes a GCM message observer class. The GCM message observer class allows you to monitor GCM messages.
The GCM message observer class also includes a GCM message handler class that you can use to receive GCM messages.
GCM also supports message acknowledgments. To acknowledge a message, you first need to create an acknowledgement listener. After you have created the acknowledgement listener, you can use the gcm.acknowledgeMessage() API call to acknowledge the message.acknowledgeMessage() call takes two arguments: the acknowledgement message ID and the message payload. The acknowledgement message ID is a unique identifier that you will use to track the progress of the message.
The GCM library also includes a GCM acknowledgement library. The GCM acknowledgement library allows you to acknowledge GCM messages.
The GCM acknowledgement library includes a GCM message handler class that you can use to acknowledge GCM messages. The GCM acknowledgement.
