import 'package:flutter/foundation.dart'; enum ImportState{start, import, parse, complete, stop, error} class ImportOmpl extends ChangeNotifier{ ImportState _importState = ImportState.stop; String _rssTitle; String get rsstitle => _rssTitle; set rssTitle(String title){ _rssTitle = title; } ImportState get importState => _importState; set importState(ImportState state){ if(_importState != state) {_importState = state; notifyListeners(); } } }