| // 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. |
| |
| // Template: dev/snippets/config/templates/stateful_widget_scaffold_center.tmpl |
| // |
| // Comment lines marked with "▼▼▼" and "▲▲▲" are used for authoring |
| // of samples, and may be ignored if you are just exploring the sample. |
| |
| // Flutter code sample for SwitchListTile |
| // |
| //*************************************************************************** |
| //* ▼▼▼▼▼▼▼▼ description ▼▼▼▼▼▼▼▼ (do not modify or remove section marker) |
| |
| // ![Switch list tile semantics sample](https://flutter.github.io/assets-for-api-docs/assets/material/switch_list_tile_semantics.png) |
| // |
| // Here is an example of a custom labeled radio widget, called |
| // LinkedLabelRadio, that includes an interactive [RichText] widget that |
| // handles tap gestures. |
| |
| //* ▲▲▲▲▲▲▲▲ description ▲▲▲▲▲▲▲▲ (do not modify or remove section marker) |
| //*************************************************************************** |
| |
| //**************************************************************************** |
| //* ▼▼▼▼▼▼▼▼ code-imports ▼▼▼▼▼▼▼▼ (do not modify or remove section marker) |
| |
| import 'package:flutter/gestures.dart'; |
| |
| //* ▲▲▲▲▲▲▲▲ code-imports ▲▲▲▲▲▲▲▲ (do not modify or remove section marker) |
| //**************************************************************************** |
| |
| import 'package:flutter/material.dart'; |
| |
| void main() => runApp(const MyApp()); |
| |
| /// This is the main application widget. |
| class MyApp extends StatelessWidget { |
| const MyApp({Key? key}) : super(key: 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 Center( |
| child: MyStatefulWidget(), |
| ), |
| ), |
| ); |
| } |
| } |
| |
| //***************************************************************************** |
| //* ▼▼▼▼▼▼▼▼ code-preamble ▼▼▼▼▼▼▼▼ (do not modify or remove section marker) |
| |
| class LinkedLabelSwitch extends StatelessWidget { |
| const LinkedLabelSwitch({ |
| Key? key, |
| required this.label, |
| required this.padding, |
| required this.value, |
| required this.onChanged, |
| }) : super(key: key); |
| |
| final String label; |
| final EdgeInsets padding; |
| final bool value; |
| final ValueChanged<bool> onChanged; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Padding( |
| padding: padding, |
| child: Row( |
| children: <Widget>[ |
| Expanded( |
| child: RichText( |
| text: TextSpan( |
| text: label, |
| style: const TextStyle( |
| color: Colors.blueAccent, |
| decoration: TextDecoration.underline, |
| ), |
| recognizer: TapGestureRecognizer() |
| ..onTap = () { |
| print('Label has been tapped.'); |
| }, |
| ), |
| ), |
| ), |
| Switch( |
| value: value, |
| onChanged: (bool newValue) { |
| onChanged(newValue); |
| }, |
| ), |
| ], |
| ), |
| ); |
| } |
| } |
| |
| //* ▲▲▲▲▲▲▲▲ code-preamble ▲▲▲▲▲▲▲▲ (do not modify or remove section marker) |
| //***************************************************************************** |
| |
| /// This is the stateful widget that the main application instantiates. |
| class MyStatefulWidget extends StatefulWidget { |
| const MyStatefulWidget({Key? key}) : super(key: key); |
| |
| @override |
| State<MyStatefulWidget> createState() => _MyStatefulWidgetState(); |
| } |
| |
| /// This is the private State class that goes with MyStatefulWidget. |
| class _MyStatefulWidgetState extends State<MyStatefulWidget> { |
| //******************************************************************** |
| //* ▼▼▼▼▼▼▼▼ code ▼▼▼▼▼▼▼▼ (do not modify or remove section marker) |
| |
| bool _isSelected = false; |
| |
| @override |
| Widget build(BuildContext context) { |
| return LinkedLabelSwitch( |
| label: 'Linked, tappable label text', |
| padding: const EdgeInsets.symmetric(horizontal: 20.0), |
| value: _isSelected, |
| onChanged: (bool newValue) { |
| setState(() { |
| _isSelected = newValue; |
| }); |
| }, |
| ); |
| } |
| |
| //* ▲▲▲▲▲▲▲▲ code ▲▲▲▲▲▲▲▲ (do not modify or remove section marker) |
| //******************************************************************** |
| |
| } |