How do you handle background tasks and notifications in Flutter?

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In Flutter, handling background tasks and notifications involves several plugins and platform-specific configurations.

For background tasks, the commonly used plugin is workmanager. It allows scheduling Dart callbacks to run in the background, even when the app is terminated. You initialize it in the main() function, register a task, and define a callback dispatcher to handle task execution. For Android, it uses WorkManager; on iOS, background execution is limited and requires special entitlements and conditions (e.g., background fetch or silent push notifications).

For notifications, the most popular plugin is flutter_local_notifications. It enables scheduling and displaying local notifications on Android, iOS, and other platforms. You must configure initialization settings per platform and request permissions on iOS/macOS. It supports scheduled, recurring, and push-triggered notifications.

To handle push notifications, integrate Firebase Cloud Messaging (FCM) using the firebase_messaging package. It supports foreground and background messages. You handle foreground messages with listeners and background/terminated messages using a background message handler.

Together, you can combine firebase_messaging with flutter_local_notifications to show rich notifications even when the app is in the foreground or background.

Always test thoroughly, especially on iOS, due to strict background execution and notification delivery policies.

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