| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/material.dart'; |
| |
| /// Flutter code sample for [Radio]. |
| |
| void main() => runApp(const RadioExampleApp()); |
| |
| class RadioExampleApp extends StatelessWidget { |
| const RadioExampleApp({super.key}); |
| |
| @override |
| Widget build(BuildContext context) { |
| return MaterialApp( |
| home: Scaffold( |
| appBar: AppBar(title: const Text('Radio Sample')), |
| body: const Center( |
| child: RadioExample(), |
| ), |
| ), |
| ); |
| } |
| } |
| |
| enum SingingCharacter { lafayette, jefferson } |
| |
| class RadioExample extends StatefulWidget { |
| const RadioExample({super.key}); |
| |
| @override |
| State<RadioExample> createState() => _RadioExampleState(); |
| } |
| |
| class _RadioExampleState extends State<RadioExample> { |
| SingingCharacter? _character = SingingCharacter.lafayette; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Column( |
| children: <Widget>[ |
| ListTile( |
| title: const Text('Lafayette'), |
| leading: Radio<SingingCharacter>( |
| value: SingingCharacter.lafayette, |
| groupValue: _character, |
| onChanged: (SingingCharacter? value) { |
| setState(() { |
| _character = value; |
| }); |
| }, |
| ), |
| ), |
| ListTile( |
| title: const Text('Thomas Jefferson'), |
| leading: Radio<SingingCharacter>( |
| value: SingingCharacter.jefferson, |
| groupValue: _character, |
| onChanged: (SingingCharacter? value) { |
| setState(() { |
| _character = value; |
| }); |
| }, |
| ), |
| ), |
| ], |
| ); |
| } |
| } |