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mobile-push-notifications

Skill4 starsChanged 5 months agoMITView on GitHub

Push notification patterns for React Native using expo-notifications and Firebase Cloud Messaging v1. FCM/APNs setup, token management, rich notifications, deep linking, background handling, and server-side sending. Use for implementing push notifications in mobile apps.

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SKILL.md

Mobile Push Notifications

Push notification patterns for React Native applications using expo-notifications and Firebase Cloud Messaging (FCM) v1 HTTP API.

Library Decision

Criterionexpo-notificationsreact-native-firebase + Notifee
Expo managed workflowNative support, low setupRequires config plugin
Rich notificationsBasic (images, categories)Full control (big picture, actions)
Firebase ecosystemSeparate integrationNative analytics, topics, receipts
Local notificationsBuilt-in schedulingRequires Notifee addon
Best forNew Expo SDK 53+ projects, MVPsExisting Firebase projects, enterprise

New Expo managed projects generally use expo-notifications. Projects deeply integrated with Firebase or needing advanced notification styling (big picture, inline reply, grouped) typically use react-native-firebase with Notifee.

Real-Time Communication Quick Reference

MechanismApp StateDirectionUse Case
Push notificationsAny (including killed)Server to deviceAlerts, updates, background sync triggers
WebSocketForeground onlyBidirectionalChat, gaming, typing indicators
SSEForeground onlyServer to clientLive feeds, stock prices, dashboards

A hybrid pattern (WebSocket while active, push when backgrounded) covers most real-time needs.

Critical Context

FCM legacy APIs shut down July 2024. All implementations use the v1 HTTP API with OAuth 2.0 short-lived tokens. APNs token-based JWT authentication is the current standard; certificate-based auth is deprecated.

SDK 53+ requires development builds for push notification testing on Android. Expo Go no longer supports push on Android.

Permission priming screens (showing a custom modal before the system prompt) achieve 70-85% opt-in rates compared to 40-60% for cold permission requests on first launch.

File Reference

  • reference.md - FCM v1 setup, APNs auth, token management, notification handling patterns, channels/categories, server-side sending, platform gotchas, anti-patterns
  • examples.md - Production code examples: token registration, handlers, deep linking, rich notifications, server senders (Node.js/Python), permission priming, preferences screen, local scheduling, complete setup

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