// 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. /// Flutter code sample for [Radio.toggleable]. import 'package:flutter/material.dart'; void main() => runApp(const MyApp()); class MyApp extends StatelessWidget { const MyApp({super.key}); static const String _title = 'Flutter Code Sample'; @override Widget build(BuildContext context) { return MaterialApp( title: _title, home: Scaffold( appBar: AppBar(title: const Text(_title)), body: const MyStatefulWidget(), ), ); } } class MyStatefulWidget extends StatefulWidget { const MyStatefulWidget({super.key}); @override State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); } class _MyStatefulWidgetState extends State<MyStatefulWidget> { int? groupValue; static const List<String> selections = <String>[ 'Hercules Mulligan', 'Eliza Hamilton', 'Philip Schuyler', 'Maria Reynolds', 'Samuel Seabury', ]; @override Widget build(BuildContext context) { return Scaffold( body: ListView.builder( itemBuilder: (BuildContext context, int index) { return Row( mainAxisSize: MainAxisSize.min, children: <Widget>[ Radio<int>( value: index, groupValue: groupValue, // TRY THIS: Try setting the toggleable value to false and // see how that changes the behavior of the widget. toggleable: true, onChanged: (int? value) { setState(() { groupValue = value; }); }), Text(selections[index]), ], ); }, itemCount: selections.length, ), ); } }