Adding Firebase Cloud Messaging to a Jetpack Compose app

Part nine of an Android development series explains how to integrate Firebase Cloud Messaging (FCM) into a Jetpack Compose to-do app to deliver push notifications. It describes FCM’s support for notification and data messages across Firebase platforms, along with targeting options for individual device tokens, topics, and Analytics audiences. The implementation includes adding the Firebase Messaging SDK, registering a FirebaseMessagingService in the Android manifest, configuring default notification channels, icons, and colors, and overriding message handling to display notifications while the app is in the foreground. It also addresses Android 13’s runtime notification permission by using Accompanist’s Compose permissions library to show either the native permission request or a rationale dialog directing users to Settings after denial. Finally, it outlines testing by retrieving an FCM registration token from Logcat and using the Firebase Console to send test notifications, and previews the next installment on advanced Cloud Firestore queries.

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