examples/api/lib/material/slider/slider.1.dart

// 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 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> {
  double _currentSliderPrimaryValue = 0.2;
  double _currentSliderSecondaryValue = 0.5;

  @override
  Widget build(BuildContext context) {
    return 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;
            });
          },
        ),
      ],
    );
  }
}