flutter_provider_demo/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_provider_demo/routes.dart';
import 'package:provider/provider.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        // Provider<Counter>.value(value: Counter()),
        ChangeNotifierProvider<Counter>(create: (_) => Counter()),
        ChangeNotifierProvider<ThemeModel>(create: (_) => ThemeModel()),
      ],
      child: MaterialApp(
        title: 'Provider Demo',
        debugShowCheckedModeBanner: false,
        theme: ThemeData(
          primarySwatch: Colors.blue,
          visualDensity: VisualDensity.adaptivePlatformDensity,
        ),
        initialRoute: Routes.index,
        onGenerateRoute: Routes.generateRoute,
      ),
    );
  }
}