page controller

class _MainPagerState extends State<MainPager>
    with AutomaticKeepAliveClientMixin {
  int _selectedIndex = 0;
  Icon _foods = Icon(MdiIcons.foodApple);
  Icon _favorite = Icon(Icons.favorite_border);
  Icon _shoppingList = Icon(Icons.playlist_add);
  bool _darkMode = true;

  PageController _pagerController =
      PageController(initialPage: 0, keepPage: false);

  final _rateMyApp = RateMyApp(
    preferencesPrefix: 'rateMyApp_',
    minDays: 0,
    minLaunches: 5,
    remindDays: 5,
    remindLaunches: 5,
  );

  @override
  void initState() {
    super.initState();
    _fetchPrefs();
    _showRateDialog();
  }

  _showRateDialog() {
    _rateMyApp.init().then((_) => {
          if (_rateMyApp.shouldOpenDialog)
            _rateMyApp.showRateDialog(context,
                title: 'امتیاز دهید',
                message:
                    'در صورتی که از زیتون راضی بودید لطفا به ما امتیاز دهید.',
                rateButton: 'باشه',
                laterButton: 'بعدا',
                noButton: 'نمی خوام',
                dialogStyle: DialogStyle(
                  titleAlign: TextAlign.right,
                  messageAlign: TextAlign.right,
                )
/*        listener: (button){
          switch (button){
            case RateMyAppDialogButton.rate:
              UtilLogger.log('Rate!');
              break;
            case RateMyAppDialogButton.later:
              UtilLogger.log('Later!');
              break;
            case RateMyAppDialogButton.no:
              UtilLogger.log('No!');
              break;

          }
          return true;
        }*/
                )
        });
  }

  @override
  void dispose() {
    _pagerController.dispose();
    super.dispose();
  }

  void _fetchPrefs() async {
/*    var prefs = await SharedPreferences.getInstance();
    _darkMode=prefs.getBool('isDarkMode')??false;*/
    final result = await Hive.openBox(Constraints.brightnessBox);
    _darkMode = result.get('darkMode', defaultValue: false);
    result.close();
  }

  void _onItemTapped(int index) {
    _selectedIndex = index;
    _favorite = _selectedIndex == 1
        ? Icon(Icons.favorite)
        : Icon(Icons.favorite_border);
    _foods = _selectedIndex == 0
        ? Icon(MdiIcons.foodApple)
        : Icon(MdiIcons.foodAppleOutline);
    _shoppingList =
        _selectedIndex == 2 ? Icon(Icons.view_list) : Icon(Icons.playlist_add);
    _pagerController.jumpToPage(index);
    setState(() {});
  }

  Widget _bottomBar() {
    return BottomNavyBar(
      selectedIndex: _selectedIndex,
      showElevation: true, // use this to remove appBar's elevation
      onItemSelected: _onItemTapped,
      items: [
        BottomNavyBarItem(
          icon: _foods,
          title: Text('غذاها'),
          activeColor: Theme.of(context).buttonColor,
        ),
        BottomNavyBarItem(
            icon: _favorite,
            title: Text('مورد‌علاقه'),
            activeColor: Theme.of(context).primaryColor),
        BottomNavyBarItem(
            icon: _shoppingList,
            title: Text('سبدهای خرید'),
            activeColor: Color(0xff2980b9)),
        BottomNavyBarItem(
            icon: Icon(Icons.notes),
            title: Text('نکات آشپزی'),
            activeColor: Theme.of(context).buttonColor),
        BottomNavyBarItem(
            icon: Icon(Icons.account_circle),
            title: Text('صفحه‌من'),
            activeColor: Theme.of(context).cursorColor),
      ],
    );
  }

  @override
  Widget build(BuildContext context) {
    super.build(context);
    return Directionality(
      textDirection: TextDirection.rtl,
      child: Scaffold(
        body: PageView(
          physics: NeverScrollableScrollPhysics(),
          controller: _pagerController,
          children: <Widget>[
            const HomePage(),
            const FavoritePage(),
            const ShoppingListPage(),
            const CookingNotePage(),
            ProfileForm(
              nightMode: _darkMode,
            )
          ],
        ),
        bottomNavigationBar: _bottomBar(),
      ),
    );
  }

  @override
  // TODO: implement wantKeepAlive
  bool get wantKeepAlive => true;
}