Integrate Android app notifications using Firebase Cloud Messaging and NotificationCompat. Use when setting up FCM, notification channels, or client-side notification taps; defer Flutter, server sends, WorkManager orchestration, and generic Intent handling.
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skill mdSKILL.md1,823 B
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SKILL.md
Android Notifications
Priority: P2 (MEDIUM)
Implementation Guidelines
Channels: Create NotificationChannel with unique ID (required for API 26+). Notifications without valid channel silently dropped. Use NotificationCompat for backwards compatibility.
Permissions: Explicitly request POST_NOTIFICATIONS on Android 13+ (API 33). Avoid requesting system permission on app launch; show priming dialog first to explain benefit.
Service: Implement FirebaseMessagingService with onMessageReceived and onNewToken for background push handling. Declare service in AndroidManifest with MESSAGING_EVENT intent action.
Flow: Handle notification taps in both onCreate and onNewIntent using PendingIntent. Pass data between activities via Intent extras.
Payload: Limit notification payload to essential IDs. Perform background data fetching via WorkManager if more data needed.
Anti-Patterns
No Missing Channel: Notifications fail silently without channels on API 26+.
No Unconditional Requests: Don't spam permission dialog on first launch.
No Missing Manifest: Service must declared with MESSAGING_EVENT action.
