liangchengyou / wow_english

  import 'package:flutter/material.dart';
  import 'package:flutter_bloc/flutter_bloc.dart';
  import 'package:flutter_easyloading/flutter_easyloading.dart';
  import 'package:flutter_screenutil/flutter_screenutil.dart';

  import 'package:responsive_framework/responsive_framework.dart';

  import 'package:umeng_apm_sdk/umeng_apm_sdk.dart';

  import 'package:wow_english/common/blocs/cachebloc/cache_bloc.dart';

  import 'package:wow_english/common/widgets/hide_keyboard_widget.dart';

  import 'package:wow_english/pages/tab/blocs/tab_bloc.dart';

  import 'package:wow_english/pages/user/bloc/user_bloc.dart';

  import 'package:wow_english/route/route.dart';

  
  class App extends StatelessWidget {

    const App([this._navigatorObserver]);
  
    final NavigatorObserver? _navigatorObserver;

  
    @override
    Widget build(BuildContext context) {
      return ScreenUtilInit(

        designSize: const Size(667, 375),

        builder: (_, __) => MultiBlocProvider(

            providers: [

              BlocProvider<TabBloc>(create: (_) => TabBloc()),

              BlocProvider<CacheBloc>(create: (_) => CacheBloc()),

              BlocProvider<UserBloc>(create: (_) => UserBloc()),

            ],

            child: HideKeyboard(
              child: MaterialApp(
                title: 'WowEnglish',
                theme: ThemeData(

                  fontFamily: 'HannotateSC',

                  colorScheme: ColorScheme.fromSeed(seedColor: Colors.white),

                  useMaterial3: true,
                ),

                builder: EasyLoading.init(

                    builder: (context, child) => ResponsiveBreakpoints(breakpoints: const [
                          Breakpoint(start: 0, end: 450, name: MOBILE),
                          Breakpoint(start: 0, end: 450, name: PHONE),
                          Breakpoint(start: 451, end: 800, name: TABLET),
                          Breakpoint(start: 801, end: 1920, name: DESKTOP),
                          Breakpoint(start: 1921, end: double.infinity, name: '4K'),
                        ], child: child!)),

                initialRoute: AppRouteName.splash,
                navigatorKey: AppRouter.navigatorKey,
                onGenerateRoute: AppRouter.generateRoute,

                navigatorObservers: <NavigatorObserver>[
                  // 带入ApmNavigatorObserver实例用于路由监听
                  // 如果不带入SDK监听器将无法获知页面（PV）入栈退栈行为，错误率（Dart异常数/FlutterPV次数）将异常攀升。
                  _navigatorObserver ?? ApmNavigatorObserver.singleInstance
                ],

              ),

            )),
      );
    }
  }