On April 10, 2018, Google deprecated GCM. The GCM server and client APIs were removed on May 29, 2019, and currently any calls to those APIs can be expected to fail. Migrate GCM apps to Firebase Cloud Messaging (FCM), which inherits the reliable and scalable GCM infrastructure, plus many new features. See the migration guide to learn more.

Class List

Class List
The classes and protocols in Google Cloud Messaging for iOS:
 CGCMConfigConfig used to set different options in Google Cloud Messaging
 CGCMPubSubGcmPubSub provides a publish-subscribe model for sending GCM topic messages
 C<GCMReceiverDelegate>Delegate for receiving status of upstream messages sent via Google Cloud Messaging
 CGCMServiceGoogleCloudMessaging (GCM) enables apps to communicate with their app servers using simple messages