push-notifications

Request UserNotifications authorization first, then register for remote notifications to capture the APNs device token. Correct ordering prevents permission failures and ensures valid token delivery for proper hex formatting and backend processing.

Silent push notifications face simulator limitations and common APNs delivery failures. Validate payload structure, ensure proper APNs token hex formatting, and apply graceful fallbacks when testing background pushes, as simulator environments restrict reliable silent push delivery.

Define actionable categories and actions within UserNotifications to handle interactive push notification responses, including text input. Wire the delegate properly to capture action responses and support notification grouping using thread identifiers for organized delivery.

The correct APNs device token format is hex. Properly format the captured token as a hex string before uploading to your backend to prevent common APNs delivery failures and ensure reliable remote notification routing to target devices.

Handle mutable-content for service extensions to support rich and extended notification patterns. Validate payload structure carefully to trigger the service extension, enabling dynamic content modification and rich media attachment before final push notification presentation.

Schedule local notifications by creating content and choosing time, calendar, or location triggers. Manage scheduling requests and remove pending or delivered notifications using UserNotifications, supporting reliable local delivery alongside APNs remote notification flows.