| // 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 [Slider]. |
| |
| import 'package:flutter/material.dart'; |
| |
| void main() => runApp(const SliderApp()); |
| |
| class SliderApp extends StatelessWidget { |
| const SliderApp({super.key}); |
| |
| @override |
| Widget build(BuildContext context) { |
| return const MaterialApp( |
| home: SliderExample(), |
| ); |
| } |
| } |
| |
| class SliderExample extends StatefulWidget { |
| const SliderExample({super.key}); |
| |
| @override |
| State<SliderExample> createState() => _SliderExampleState(); |
| } |
| |
| class _SliderExampleState extends State<SliderExample> { |
| double _currentSliderPrimaryValue = 0.2; |
| double _currentSliderSecondaryValue = 0.5; |
| |
| @override |
| Widget build(BuildContext context) { |
| return Scaffold( |
| appBar: AppBar(title: const Text('Slider')), |
| body: Column( |
| mainAxisAlignment: MainAxisAlignment.center, |
| children: <Widget>[ |
| Slider( |
| value: _currentSliderPrimaryValue, |
| secondaryTrackValue: _currentSliderSecondaryValue, |
| label: _currentSliderPrimaryValue.round().toString(), |
| onChanged: (double value) { |
| setState(() { |
| _currentSliderPrimaryValue = value; |
| }); |
| }, |
| ), |
| Slider( |
| value: _currentSliderSecondaryValue, |
| label: _currentSliderSecondaryValue.round().toString(), |
| onChanged: (double value) { |
| setState(() { |
| _currentSliderSecondaryValue = value; |
| }); |
| }, |
| ), |
| ], |
| ), |
| ); |
| } |
| } |