Push Notifications

Implement, review, and debug local and remote notifications with UserNotifications and APNs. Target the project's deployment range; examples assume modern Swift concurrency and note availability when using newer APIs.

Keep adjacent domains separate: Live Activity content-state pushes belong to activitykit; PushKit/VoIP calls to callkit; App Clip ephemeral setup to app-clips; long-running or scheduled background work to background-processing.

Contents

• Route by task
• Core workflow
• Authorization and APNs registration
• Payload and delivery contracts
• Runtime handling and routing
• Categories and actions
• Correction reviews
• Common mistakes
• Review checklist

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