アプリでよくある画面の下の方にタブバーを追加してみました。サンプルのまま追加しました。
BottomNavigationBar class – material library – Dart API
API docs for the BottomNavigationBar class from the material library, for the Dart programming language.
lib/my_home_page.dart
import 'package:flutter/material.dart'; import 'package:flutter_gen/gen_l10n/app_localizations.dart'; class MyHomePage extends StatefulWidget { const MyHomePage({Key? key, required this.title}) : super(key: key); final String title; @override State<MyHomePage> createState() => _MyHomePageState(); } class _MyHomePageState extends State<MyHomePage> { int _selectedIndex = 0; static const TextStyle optionStyle = TextStyle(fontSize: 30, fontWeight: FontWeight.bold); static const List<Widget> _widgetOptions = <Widget>[ Text( 'Index 0: Home', style: optionStyle, ), Text( 'Index 1: Business', style: optionStyle, ), Text( 'Index 2: School', style: optionStyle, ), ]; void _onItemTapped(int index) { setState(() { _selectedIndex = index; }); } int _counter = 0; void _incrementCounter() { setState(() { _counter++; }); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text(widget.title), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Text(AppLocalizations.of(context)!.helloWorld), const Text( 'You have pushed the button this many times:', ), Text( '$_counter', style: Theme.of(context).textTheme.headline4, ), ], ), ), floatingActionButton: FloatingActionButton( onPressed: _incrementCounter, tooltip: 'Increment', child: const Icon(Icons.add), ), // This trailing comma makes auto-formatting nicer for build methods. bottomNavigationBar: BottomNavigationBar( items: const <BottomNavigationBarItem>[ BottomNavigationBarItem( icon: Icon(Icons.home), label: 'Home', ), BottomNavigationBarItem( icon: Icon(Icons.business), label: 'Business', ), BottomNavigationBarItem( icon: Icon(Icons.school), label: 'School', ), ], currentIndex: _selectedIndex, selectedItemColor: Colors.amber[800], onTap: _onItemTapped, ), ); } }