import 'package:flutter_foreground_task/flutter_foreground_task.dart'; void startCallback() { FlutterForegroundTask.setTaskHandler(MyTaskHandler()); } class MyTaskHandler extends TaskHandler { @override Future onStart(DateTime timestamp, TaskStarter? starter) async { // Initialization code, e.g. open DB or services } @override Future onDestroy(DateTime timestamp, bool isTimeout) async { // Clean up if needed } @override void onRepeatEvent(DateTime timestamp) { // Called based on the eventAction set in ForegroundTaskOptions } }