Cloud Messaging
Cloud Messaging
Firebase Cloud Messaging (FCM) is a cross-platform messaging solution that allows you to reliably deliver notifications and data messages to React Native applications on both Android and iOS.
Installing Firebase Messaging
bash
npm install @react-native-firebase/messaging
Requesting Permission
javascript
import messaging from '@react-native-firebase/messaging';
const authStatus = await messaging().requestPermission();
const enabled = authStatus === messaging.AuthorizationStatus.AUTHORIZED;
Getting the FCM Token
javascript
const token = await messaging().getToken();
console.log('FCM Token:', token);
Saving the Token to Your Backend
javascript
await firestore().collection('users').doc(userId).update({ fcmToken: token });
Handling Token Refresh
javascript
messaging().onTokenRefresh((newToken) => {
updateTokenOnServer(newToken);
});
Sending a Test Message
Test messages can be sent directly from the Firebase Console’s Cloud Messaging section, or programmatically through the Firebase Admin SDK from your backend server.
Subscribing to Topics
javascript
await messaging().subscribeToTopic('news');
Conclusion
Firebase Cloud Messaging provides the underlying infrastructure for reliable push notification delivery in React Native applications, forming the foundation for the notification handling covered in the next tutorial.
