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Cloud Messaging

Firebase Cloud Messaging (FCM) allows you to send push messages at no cost to both Android & iOS platforms. Assuming the installation instructions have been followed, FCM is ready to go.

As the Firebase Web SDK has limited messaging functionality, the following methods within react-native-firebase have been created to handle FCM in the React Native environment.

Badge notification is well known on the iOS platform, but also supported by different Android devices / launchers. This library uses the ShortcutBadger library to set the badge number also on Android. A list of supported launcher can be found there.

!> [iOS] Please note: In order for iOS devices to receive Cloud Messages, ensure you request permissions.

API

subscribeToTopic(topic: string)

Subscribes the device to a topic.

firebase.messaging().subscribeToTopic('foobar');

unsubscribeFromTopic(topic: string)

Unsubscribes the device from a topic.

firebase.messaging().unsubscribeFromTopic('foobar');

getInitialNotification(): `Promise<Object>`

When the application has been opened from a notification getInitialNotification is called and the notification payload is returned. Use onMessage for notifications when the app is running.

firebase.messaging().getInitialNotification()
  .then((notification) => {
    console.log('Notification which opened the app: ', notification);
  });

### getToken(): Promise<string>

Returns the devices FCM token. This token can be used in the Firebase console to send messages to directly.

firebase.messaging().getToken()
  .then((token) => {
    console.log('Device FCM Token: ', token);
  });

onTokenRefresh(listener: `Function<string>`)

On the event a devices FCM token is refreshed by Google, the new token is returned in a callback listener.

firebase.messaging().onTokenRefresh((token) => {
  console.log('Refreshed FCM token: ', token);
});

onMessage(listener: `Function<Object>`)

On a new message, the payload object is passed to the listener callback. This method is only triggered when the app is running. Use getInitialNotification for notifications which cause the app to open.

firebase.messaging().onMessage((message) => {
  // TODO
});

createLocalNotification(notification: Object)

Create a local notification from the device itself.

// TODO

### scheduleLocalNotification(notification: Object)

Schedule a local notification to be shown on the device.

getScheduledLocalNotifications(): `Promise<Array>`

Returns an array of all currently scheduled notifications.

firebase.messaging().getScheduledLocalNotifications()
  .then((notifications) => {
    console.log('Current scheduled notifications: ', notifications);
  });

cancelLocalNotification(id: string)

Cancels a location notification by ID, or all notifications by *.

// Cancel all local notifications
firebase.messaging().cancelLocalNotification('*');
// Cancel a single local notification
firebase.messaging().cancelLocalNotification('123');

removeDeliveredNotification(id: string)

Removes all delivered notifications from device by ID, or all notifications by *.

// Remove all notifications
firebase.messaging().removeDeliveredNotification('*');
// Removes a single local notification
firebase.messaging().removeDeliveredNotification('123');

[iOS] requestPermissions()

Requests app notification permissions in an Alert dialog.

firebase.messaging().requestPermissions();

setBadgeNumber(value: number)

Sets the badge number on the iOS app icon.

firebase.messaging().setBadgeNumber(2);

getBadgeNumber(): `Promise<number>`

Returns the current badge number on the app icon.

firebase.messaging().getBadgeNumber()
  .then((badgeNumber) => {
    console.log('Current badge number: ', badgeNumber);
  });

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