onStart static method

Implementation

@pragma('vm:entry-point')
static void onStart(ServiceInstance service) async {
  final prefs = await SharedPreferences.getInstance();
  final configJson = prefs.getString('bg_service_config');
  Map<String, dynamic> configData = {};

  if (configJson != null) {
    try {
      configData = jsonDecode(configJson);
    } catch (e) {
      if (kDebugMode) {
        print('Error parsing config: $e');
      }
    }
  }

  final title = configData['title'] ?? 'Step Tracker';
  final content =
      configData['content'] ?? 'Tracking your steps in background';

  if (service is AndroidServiceInstance) {
    service.setForegroundNotificationInfo(title: title, content: content);
  }

  // Add step tracking in background
  StreamSubscription<StepCount>? stepSubscription;

  try {
    stepSubscription = Pedometer.stepCountStream.listen((event) {
      // Update shared preferences with latest step count
      prefs.setInt('currentSteps', event.steps);

      // Calculate session steps if initial steps are set
      final initialSteps = prefs.getInt('initialSteps') ?? -1;
      if (initialSteps != -1) {
        final sessionSteps = event.steps - initialSteps;
        prefs.setInt('sessionSteps', sessionSteps);
      }
    });
  } catch (e) {
    debugPrint('Error initializing step tracking in background: $e');
  }

  service.on('stopService').listen((event) {
    stepSubscription?.cancel();
    service.stopSelf();
  });
}