Flutter Switch – Active Track Color

Active Track Color for Switch

Flutter Switch Active Color is the color used for the track area of the switch when the switch is on. The track area is the horizontal bar that appears behind the thumb.

To set a specific color for the track area when the Switch is active, set activeTrackColor of Switch with the required Color value.

Code Snippet

Switch(
  activeTrackColor: Colors.amber,
),

Example

In the following example, we shall implement a Switch widget with active track color set to Colors.amber.

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> {
  bool isSwitched = false;
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        children: <Widget>[
          Padding(
            padding: const EdgeInsets.all(50.0),
            child: Switch(
              activeTrackColor: Colors.amber,
              value: isSwitched,
              onChanged: (value) {
                setState(() {
                  isSwitched = value;
                });
              },
            ),
          ),
        ],
      ),
    );
  }
}

iPhone Screenshot

Summary

In this Flutter Tutorial, we learned how to set color for the track area of Switch widget when the state of the Switch is active.