How to Change the Screen Brightness with Flutter App

Flutter is a popular cross-platform framework for building mobile applications. One common feature of mobile devices is the ability to adjust screen brightness. In this article, we will guide you on how to change the screen brightness with a Flutter app.

Table of Contents

Introduction to Screen Brightness Adjustment

The ability to adjust screen brightness is a fundamental feature of mobile devices. It allows users to conserve battery life, reduce eye strain, and improve overall user experience. With Flutter, you can create a mobile app that adjusts screen brightness programmatically.

Requirements for Adjusting Screen Brightness

To adjust screen brightness in a Flutter app, you will need to add the `screen_brightness` package to your project. You can do this by adding the following line to your `pubspec.yaml` file:

“`yml

dependencies:

screen_brightness: ^0.2.1

“`

Then, run `flutter pub get` to install the package.

Adjusting Screen Brightness with Flutter

To adjust screen brightness, you can use the `setScreenBrightness` method provided by the `screen_brightness` package. Here is an example code snippet:

“`dart

import ‘package:flutter/material.dart’;

import ‘package:screenbrightness/screenbrightness.dart’;

class BrightnessAdjuster extends StatefulWidget {

@override

BrightnessAdjusterState createState() => BrightnessAdjusterState();

}

class _BrightnessAdjusterState extends State {

double _brightness = 0.5;

@override

Widget build(BuildContext context) {

return Column(

children: [

Slider(

value: _brightness,

min: 0,

max: 1,

divisions: 10,

label: ‘Brightness: ${(_brightness * 100).round()}%’,

onChanged: (double value) {

setState(() {

_brightness = value;

ScreenBrightness.setScreenBrightness(_brightness);

});

);

}

“`

In this example, a `Slider` widget is used to adjust the screen brightness. The `onChanged` callback is used to update the screen brightness when the user interacts with the slider.

Conclusion

In this article, we have guided you on how to change the screen brightness with a Flutter app. By using the `screen_brightness` package and the `setScreenBrightness` method, you can create a mobile app that adjusts screen brightness programmatically.