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