A Plugin for controlling screen brightness with application life cycle set and reset brightness implemented
Home Page: https://pub.dev/packages/screen_brightness
License: MIT License
crash in windows
Why do you want to delete these two pointers?
cd screen_brightness/screen_brightness/example && flutter run -d windows and quitwindows
I got this message if I try to adjust the brightness manually from the system slider:
Can't adjust brihtness in the quick panel right now because it's being controlled by the currently running app.
I use this plugin to set the brighness at a low value when entering my sleep mode screen. This is the code:
import 'package:async/async.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:screen_brightness/screen_brightness.dart';
import '../screens/sleep_mode/sleep_mode.screen.dart';
const _sleepModeInactivityTimeout = Duration(seconds: 5);
const _sleepModeTransitionDuration = Duration(seconds: 1);
const _lowScreenBrightnessValue = 0.2;
class SleepModeListener extends StatefulWidget {
const SleepModeListener({Key? key, required this.child}) : super(key: key);
final Widget child;
@override
State<SleepModeListener> createState() => _SleepModeListenerState();
}
class _SleepModeListenerState extends State<SleepModeListener> {
late RestartableTimer _sleepTimer;
@override
void initState() {
super.initState();
_sleepTimer =
RestartableTimer(_sleepModeInactivityTimeout, _setToSleepMode);
}
@override
Widget build(BuildContext context) => Listener(
onPointerDown: (event) {
_sleepTimer.reset();
},
child: widget.child,
);
void _setToSleepMode() async {
_sleepTimer.cancel();
await _setScreenBrightnessDown();
Get.dialog(
const SleepMode(),
transitionDuration: _sleepModeTransitionDuration,
useSafeArea: false,
).then(
(value) {
_resetScreenBrightness();
_sleepTimer.reset();
},
);
}
Future<void> _setScreenBrightnessDown() async {
ScreenBrightness().setScreenBrightness(_lowScreenBrightnessValue);
}
Future<void> _resetScreenBrightness() =>
ScreenBrightness().resetScreenBrightness();
}ScreenBrightness().setScreenBrightness()Found on an Android physical device with Android 11, emulator works fine.
Reference here
On a system with multiple displays (macOS / Windows) it would be beneficial to be able to set different brightness settings for each display. Especially in the case that the displays have different brightness capabilities.
Allow querying of list of display devices.
Allow reading or setting brightness for each display.
Screen brightness will drop to zero randomly
iOS
When I want to change the screen brightness while in the background, it doesn't change.(IOS)
Error: The getter 'isAnimate' isn't defined for the class 'ScreenBrightnessPlatform'.
adding the plugin to any flutter project will cause a crash on the windows platform
you can find more details in this issue link
Simply add screen_brightness: ^0.2.2 to any flutter windows project and the app will crash immediately
E/flutter (18328): [ERROR:flutter/lib/ui/ui_dart_state.cc(209)] Unhandled Exception: MissingPluginException(No implementation found for method setScreenBrightness on channel github.com/aaassseee/screen_brightness)
Add support for mobile web?
Recently I've added screen_brightness to our app to change the brightness of one screen.
Since then, people started mentioning that the app gets very dark. At first, I thought it was just them not understanding the auto-brightness of the phone but lately, I've started to notice it myself. The app sets the brightness of the screen to a much lower setting than it normally is. (and also lower in comparison to other apps)
screen_brightness in pubspec.yamlHere's the recording of what it looks like:
And here's without the package.
There is no package code running, it's just importing the package in pubspec.
iOS, haven't seen it on Android yet.
Thank you for this package! You're doing a great job! 💙
I was playing around with screen_brightness to see if I can have real-time data on system brightness. My use case is to have app change to light/dark theme based on system's brightness (for instance, have dark mode activated automatically when system brightness dips below 0.30 — and activate light theme when the opposite is true).
It works, for so long as the app is not in the foreground/not focused — the moment the app window is focused, it doesn't update anymore (gets stuck with the last result) — put app in background, and now works fine again.
Tried both ScreenBrightness().current and ScreenBrightness().system to no avail.
The following is the code I played with:
FutureBuilder<double>(
future: ScreenBrightness().current,
//future: ScreenBrightness().system,
builder: (context, snapshot) {
double currentBrightness = 0;
if (snapshot.hasData) {
currentBrightness = snapshot.data!;
}
return StreamBuilder<double>(
stream: ScreenBrightness()
.onCurrentBrightnessChanged,
builder: (context, snapshot) {
double changedBrightness =
currentBrightness;
if (snapshot.hasData) {
changedBrightness = snapshot.data!;
}
return Text('Current brightness: $changedBrightness');
},
);
},
),Also, with the following:
double _brightness = 0;
@override
void initState() {
super.initState();
_getBrightness();
_onCurrentBrightnessChanged();
}
Future<void> _getBrightness() async {
final brightness = await ScreenBrightness().system;
setState(() {
_brightness = brightness;
});
}
void _onCurrentBrightnessChanged() {
ScreenBrightness().onCurrentBrightnessChanged.listen((brightness) {
setState(() {
_brightness = brightness;
});
//print(_brightness);
});
}but the result is the same.
The above steps apply to macOS (testing hardware: MBP 13' 2017, using macOS Ventura 13.0).
For iOS (testing hardware: iPhone X, using iOS 16.5), I was turning room lights on and off — and it was not updating, even though the screen's brightness was changing. Sidenote: While the app is running, if we open the control center and change system's brightness manually — it works, but it doesn't count because the app is losing focus this way. And the desired outcome is to follow system's brightness in real-time, while using the app.
(lldb) dyld[14557]: Library not loaded: @rpath/libswiftCore.dylib
iOS
Android,Ios
My Flutter app crashes immediately on iOS 11 if I import the plugin in pubspec.yaml, even if I never actually use it.
I tested the bug on iPhone 8 using iOS 11.3. The same device model with iOS 12.1 works properly.
I can also replicate the bug on iPhone 6S Plus with iOS 11.4.
(I know it's an old OS, but our app is used by a large demographics and we'd like to support older devices too.)
The plugin should not alter screen brightness unless explicitly instructed to do so.
However, the plugin has a bug in lifecycle handling that causes the app to always reset the brightness to the initial state when it is about to be paused, even when no method of the plugin has ever been called.
Reproduce:
0. Create a minimal project and add this as a plugin in Pubspec.yaml, don’t modify other code. Compile and run
EDIT: Also, the Reset Brightness function always resets the brightness to the state when the application was initially launched. However, an iOS app might stay in background for a long time and the brightness has probably changed since then. We might want to update originalBrightness when calling setBrightness() or when the application resumes from background.
By Apple's Privacy manifest guidelines,
some action will be required such as adding an empty privacy manifests file even if you are not collecting anything.
Apple's document: https://developer.apple.com/documentation/bundleresources/privacy_manifest_files
See flutter/flutter#131940 for more context.
Add privacy manifests file (PrivacyInfo.xcprivacy) according to library privacy usage.
The following is an example of an empty privacy manifests file if this library is not collecting anything.
device_info_plus/ios/PrivacyInfo.xcprivacy
There is no way to control how fast the brightness changes on Android.
A 'duration' property that lets you set the duration with the Duration class. Is this possible?
I'm seeing a lot of crashes reported by Microsoft dev console. The name of the error is the following:
invalid_pointer_read_fail_fast_unexpected_heap_exception_c0000409_screen_brightness_windows_plugin.dll!unknown
Here is the stack trace they are providing :
Apps-and-Games-Health-details-Stack-prevalance-Stack-Trace (1).csv
Honestly, I don't know what the users are doing to get the error.
Windows
I/flutter (23765): RangeError: Invalid value: Not in inclusive range 0..1: 2.8392157554626465
I/flutter (23765): Failed to get current brightness
this happened when testing on pocophone f1 (and has android 10- Miui 12.0.3)
Version: 1.0.1
How to reproduce:
The error:
..../AppData/Local/Pub/Cache/hosted/pub.dev/screen_brightness-1.0.1/lib/screen_brightness.dart:151:43: Error: The getter 'isAnimate' isn't defined for the class 'ScreenBrightnessPlatform'.
- 'ScreenBrightnessPlatform' is from 'package:screen_brightness_platform_interface/screen_brightness_platform_interface.dart' ('..../AppData/Local/Pub/Cache/hosted/pub.dev/screen_brightness_platform_interface-1.0.0/lib/screen_brightness_platform_interface.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'isAnimate'.
Future<bool> get isAnimate => _platform.isAnimate;
^^^^^^^^^
.../AppData/Local/Pub/Cache/hosted/pub.dev/screen_brightness-1.0.1/lib/screen_brightness.dart:160:56: Error: The method 'setAnimate' isn't defined for the class 'ScreenBrightnessPlatform'.
- 'ScreenBrightnessPlatform' is from 'package:screen_brightness_platform_interface/screen_brightness_platform_interface.dart' ('.../AppData/Local/Pub/Cache/hosted/pub.dev/screen_brightness_platform_interface-1.0.0/lib/screen_brightness_platform_interface.dart').
Try correcting the name to the name of an existing method, or defining a method named 'setAnimate'.
Future<void> setAnimate(bool isAnimate) => _platform.setAnimate(isAnimate);
^^^^^^^^^^
Hi @aaassseee,
first of all thank you for your contribution!
I wanted to ask as the title suggests, if it is possible to add compatibility for Linux as well.
Thanks in advance and have a nice day!
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