onGeneratedRoute.dart

import 'package:flutter/material.dart';
import 'package:flutter_bloc_concepts/presentation/screens/home_screen.dart';
import 'package:flutter_bloc_concepts/presentation/screens/second_screen.dart';
import 'package:flutter_bloc_concepts/presentation/screens/third_screen.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_bloc_concepts/logic/cubit/counter_cubit.dart';
import 'package:flutter_bloc_concepts/presentation/router/app_router.dart';



void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  final AppRouter _appRouter = AppRouter();

  @override
  Widget build(BuildContext context) {
    return BlocProvider<CounterCubit>(
      create: (context) => CounterCubit(),
      child: MaterialApp(
        title: 'Flutter Demo',
        theme: ThemeData(
          primarySwatch: Colors.blue,
          visualDensity: VisualDensity.adaptivePlatformDensity,
        ),
        onGenerateRoute: _appRouter.onGenerateRoute,
      ),
    );
  }
}


class AppRouter {
  Route onGenerateRoute(RouteSettings settings) {
    final GlobalKey<ScaffoldState> key = settings.arguments;
    switch (settings.name) {
      case '/':
        return MaterialPageRoute(
          builder: (_) => HomeScreen(
            title: "Home Screen",
            color: Colors.blueAccent,
          ),
        );
      case '/second':
        return MaterialPageRoute(
          builder: (_) => SecondScreen(
            title: "Second Screen",
            color: Colors.redAccent,
            homeScreenKey: key,
          ),
        );
      case '/third':
        return MaterialPageRoute(
          builder: (_) => ThirdScreen(
            title: "Thirst Screen",
            color: Colors.greenAccent,
          ),
        );
      default:
        return null;
    }
  }
}