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MitchellGoodwinMitchellGoodwin
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Create CupertinoRadio Widget (#123296)
Create CupertinoRadio Widget
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‎examples/api/lib/cupertino/radio/cupertino_radio.0.dart‎

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// 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/cupertino.dart';
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/// Flutter code sample for [CupertinoRadio].
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void main() => runApp(const CupertinoRadioApp());
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class CupertinoRadioApp extends StatelessWidget {
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const CupertinoRadioApp({super.key});
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static const String _title = 'CuptertinoRadio Example';
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@override
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Widget build(BuildContext context) {
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return const CupertinoApp(
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theme: CupertinoThemeData(brightness: Brightness.light),
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home: CupertinoPageScaffold(
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navigationBar: CupertinoNavigationBar(
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middle: Text(_title),
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),
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child: SafeArea(
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child: CupertinoRadioExample(),
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),
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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 CupertinoRadioExample extends StatefulWidget {
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const CupertinoRadioExample({super.key});
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@override
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State<CupertinoRadioExample> createState() => _CupertinoRadioExampleState();
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}
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class _CupertinoRadioExampleState extends State<CupertinoRadioExample> {
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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 CupertinoListSection(
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children: <Widget>[
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CupertinoListTile(
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title: const Text('Lafayette'),
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leading: CupertinoRadio<SingingCharacter>(
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value: SingingCharacter.lafayette,
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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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),
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),
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CupertinoListTile(
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title: const Text('Thomas Jefferson'),
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leading: CupertinoRadio<SingingCharacter>(
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value: SingingCharacter.jefferson,
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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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),
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),
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],
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);
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}
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}

‎examples/api/lib/cupertino/radio/cupertino_radio.toggleable.0.dart‎

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// 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/cupertino.dart';
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/// Flutter code sample for [CupertinoRadio.toggleable].
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void main() => runApp(const CupertinoRadioApp());
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class CupertinoRadioApp extends StatelessWidget {
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const CupertinoRadioApp({super.key});
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static const String _title = 'CuptertinoRadio Toggleable Example';
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@override
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Widget build(BuildContext context) {
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return const CupertinoApp(
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home: CupertinoPageScaffold(
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navigationBar: CupertinoNavigationBar(
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middle: Text(_title),
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),
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child: SafeArea(
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child: CupertinoRadioExample(),
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),
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),
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);
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}
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}
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enum SingingCharacter { mulligan, hamilton }
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class CupertinoRadioExample extends StatefulWidget {
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const CupertinoRadioExample({super.key});
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@override
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State<CupertinoRadioExample> createState() => _CupertinoRadioExampleState();
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}
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class _CupertinoRadioExampleState extends State<CupertinoRadioExample> {
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SingingCharacter? _character = SingingCharacter.mulligan;
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@override
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Widget build(BuildContext context) {
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return CupertinoListSection(
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children: <Widget>[
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CupertinoListTile(
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title: const Text('Hercules Mulligan'),
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leading: CupertinoRadio<SingingCharacter>(
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value: SingingCharacter.mulligan,
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groupValue: _character,
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// TRY THIS: Try setting the toggleable value to false and
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// see how that changes the behavior of the widget.
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toggleable: true,
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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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),
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),
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CupertinoListTile(
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title: const Text('Eliza Hamilton'),
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leading: CupertinoRadio<SingingCharacter>(
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value: SingingCharacter.hamilton,
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groupValue: _character,
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toggleable: true,
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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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),
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),
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],
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);
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}
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}

‎examples/api/test/cupertino/radio/cupertino_radio.0_test.dart‎

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// 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/cupertino.dart';
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import 'package:flutter_api_samples/cupertino/radio/cupertino_radio.0.dart' as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Has 2 CupertinoRadio widgets', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.CupertinoRadioApp(),
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);
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expect(find.byType(CupertinoRadio<example.SingingCharacter>), findsNWidgets(2));
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CupertinoRadio<example.SingingCharacter> radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).first);
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expect(radio.groupValue, example.SingingCharacter.lafayette);
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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expect(radio.groupValue, example.SingingCharacter.lafayette);
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await tester.tap(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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await tester.pumpAndSettle();
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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expect(radio.groupValue, example.SingingCharacter.jefferson);
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).first);
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expect(radio.groupValue, example.SingingCharacter.jefferson);
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});
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}

‎examples/api/test/cupertino/radio/cupertino_radio.toggleable.0_test.dart‎

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// 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/cupertino.dart';
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import 'package:flutter_api_samples/cupertino/radio/cupertino_radio.toggleable.0.dart' as example;
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import 'package:flutter_test/flutter_test.dart';
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void main() {
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testWidgets('Has 2 CupertinoRadio widgets that can be toggled off', (WidgetTester tester) async {
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await tester.pumpWidget(
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const example.CupertinoRadioApp(),
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);
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expect(find.byType(CupertinoRadio<example.SingingCharacter>), findsNWidgets(2));
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CupertinoRadio<example.SingingCharacter> radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).first);
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expect(radio.groupValue, example.SingingCharacter.mulligan);
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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expect(radio.groupValue, example.SingingCharacter.mulligan);
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await tester.tap(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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await tester.pumpAndSettle();
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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expect(radio.groupValue, example.SingingCharacter.hamilton);
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).first);
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expect(radio.groupValue, example.SingingCharacter.hamilton);
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await tester.tap(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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await tester.pumpAndSettle();
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radio = tester.widget(find.byType(CupertinoRadio<example.SingingCharacter>).last);
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expect(radio.groupValue, null);
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});
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}

‎packages/flutter/lib/cupertino.dart‎

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export 'src/cupertino/nav_bar.dart';
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export 'src/cupertino/page_scaffold.dart';
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export 'src/cupertino/picker.dart';
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export 'src/cupertino/radio.dart';
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export 'src/cupertino/refresh.dart';
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export 'src/cupertino/route.dart';
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export 'src/cupertino/scrollbar.dart';

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