import 'dart:async'; import 'package:appinio_swiper/appinio_swiper.dart'; import 'package:flutter/cupertino.dart'; class MarathonProvider extends ChangeNotifier { final AppinioSwiperController swiperController = AppinioSwiperController(); bool _itsMarathonTime = false; bool get itsMarathonTime => _itsMarathonTime; set itsMarathonTime(bool value) { _itsMarathonTime = value; notifyListeners(); } Timer timer = Timer.periodic(const Duration(seconds: 1), (Timer timer) {}); int start = 20; void startTimer() { start = 20; const Duration oneSec = Duration(seconds: 1); timer = Timer.periodic( oneSec, (Timer timer) { if (start == 0) { swiperController.swipeLeft(); timer.cancel(); } else { start--; } notifyListeners(); }, ); } void cancelTimer() { timer.cancel(); notifyListeners(); } }