kprovider/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences/shared_preferences.dart';

// My Codes
import './controller/language_change_controller.dart';
import './views/home.dart';

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  SharedPreferences sp = await SharedPreferences.getInstance();
  final String locale = sp.getString('locale') ?? '';
  //print(locale);
  runApp(MyApp(locale: locale));
}

class MyApp extends StatelessWidget {
  final String locale;
  const MyApp({super.key, required this.locale});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MultiProvider(
      providers: [
        ChangeNotifierProvider(create: (_) => LanguageChangeController())
      ],
      child: Consumer<LanguageChangeController>(
          builder: (context, provider, child) {
        if (locale.isEmpty) {
          provider.changeLanguage(Locale('en'));
        }
        return MaterialApp(
          localizationsDelegates: AppLocalizations.localizationsDelegates,
          supportedLocales: AppLocalizations.supportedLocales,
          locale: provider.appLocale,
          title: 'Kittipoyi - Service Provider',
          theme: ThemeData(
            colorScheme: ColorScheme.fromSeed(
                seedColor: const Color.fromRGBO(240, 86, 39, 1)),
            useMaterial3: true,
          ),
          routes: {Home.routeName: (context) => const Home()},
          home: const Home(),
        );
      }),
    );
  }
}