Enables or disablesFirebase CloudMessaging message delivery metrics export to BigQuery.

By default, message delivery metrics are not exported to BigQuery. Use this method to enable or disable the export at runtime. In addition, you can enable the export by adding to your manifest. Note that the run-time method call will override the manifest value.

Note: This function is currently only implemented on Android, and has no behavior on other platforms.

Enable or disable token registration during initialization ofFirebase CloudMessaging.

This token is what identifies the user toFirebase, so disabling this avoids creating any new identity and automatically sending it toFirebase, unless consent has been granted.

If this setting is enabled, it triggers the token registration refresh immediately. This setting is persisted across app restarts and overrides the setting "firebase_messaging_auto_init_enabled" specified in your Android manifest (on Android) or Info.plist (on iOS and tvOS).

By default, token registration during initialization is enabled.

The registration happens before you can programmatically disable it, so if you need to change the default, (for example, because you want to prompt the user before FCM generates/refreshes a registration token on app startup), add to your application’s manifest:

<meta-dataandroid:name="firebase_messaging_auto_init_enabled"android:value="false"/>

or on iOS or tvOS to your Info.plist:

<key>FirebaseMessagingAutoInitEnabled</key><false/>

Called on the client when a message arrives.

Called on the client when a registration token message arrives.

Deletes the default token for thisFirebase project.

Note that this does not delete theFirebaseInstallations ID that may have been created when generating the token. See Installations.Delete() for deleting that.

This creates aFirebaseInstallations ID, if one does not exist, and sends information about the application and the device where it's running to theFirebase backend.

Displays a prompt to the user requesting permission to display notifications.

The permission prompt only appears on iOS and tvOS. If the user has already agreed to allow notifications, no prompt is displayed and the returned future is completed immediately.

Subscribe to receive all messages to the specified topic.

Subscribes an app instance to a topic, enabling it to receive messages sent to that topic.

Unsubscribe from a topic.

Unsubscribes an app instance from a topic, stopping it from receiving any further messages sent to that topic.