Flutter Slider Active Color
To set the active color of Slider widget in Flutter, set activeColor
property of this Slider with required Color value.
Active color is used for the active part of the slider track as shown in the following screenshot.
Sample Code
Slider(
activeColor: Colors.red,
),
Example
Flutter Application with a Slider widget.
activeColor
property of this Slider is set to Colors.red
.
main.dart
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
/// main application widget
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
static const String _title = 'Flutter Application';
@override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: Scaffold(
appBar: AppBar(title: const Text(_title)),
body: const MyStatefulWidget(),
),
);
}
}
/// stateful widget that the main application instantiates
class MyStatefulWidget extends StatefulWidget {
const MyStatefulWidget({Key? key}) : super(key: key);
@override
State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}
/// private State class that goes with MyStatefulWidget
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
double _currentSliderValue = 50;
@override
Widget build(BuildContext context) {
return Center(
child: Column(
children: <Widget>[
Slider(
activeColor: Colors.red,
value: _currentSliderValue,
min: 0,
max: 100,
label: _currentSliderValue.round().toString(),
onChanged: (double value) {
setState(() {
_currentSliderValue = value;
});
},
),
],
),
);
}
}
Screenshot