Flutter AppにTabbarを追加する

import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:my_app_01/my_home_page.dart';

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: DefaultTabController(
        length: 3,
        child: Scaffold(
          appBar: AppBar(
            bottom: const TabBar(
              tabs: [
                Tab(icon: Icon(Icons.looks_one)),
                Tab(icon: Icon(Icons.looks_two)),
                Tab(icon: Icon(Icons.looks_3)),
              ],
            ),
            title: const Text('Tabs Demo'),
          ),
          body: const TabBarView(
            children: [
              Icon(Icons.looks_one),
              Icon(Icons.looks_two),
              MyHomePage(title: 'Flutter Demo Home Page'),
            ],
          ),
        ),
      ),
    );
  }
}