Flutter屏幕亮度控制插件screen_brightness_util_ios的使用

Flutter屏幕亮度控制插件screen_brightness_util_ios的使用

在开发iOS应用时，我们有时需要动态调整屏幕亮度。screen_brightness_util_ios 是一个专门为iOS平台设计的Flutter插件，用于控制屏幕亮度。

使用步骤

1. 添加依赖 在 pubspec.yaml 文件中添加 screen_brightness_util 依赖：

   dependencies:
     flutter:
       sdk: flutter
     screen_brightness_util: ^1.0.0 # 确保使用最新版本
   

2. 初始化插件

   在你的 main.dart 文件中导入插件并初始化：

   import 'package:flutter/material.dart';
   import 'package:screen_brightness_util/screen_brightness_util.dart'; // 导入插件
   
   void main() {
     runApp(MyApp());
   }
   
   class MyApp extends StatelessWidget {
     @override
     Widget build(BuildContext context) {
       return MaterialApp(
         home: ScreenBrightnessExample(),
       );
     }
   }
   

3. 设置屏幕亮度

   在你的页面中，可以使用以下方法来获取和设置屏幕亮度：

   class ScreenBrightnessExample extends StatefulWidget {
     @override
     _ScreenBrightnessExampleState createState() => _ScreenBrightnessExampleState();
   }
   
   class _ScreenBrightnessExampleState extends State<ScreenBrightnessExample> {
     double _currentBrightness = 0.0; // 当前亮度值
   
     // 获取当前亮度
     Future<void> getCurrentBrightness() async {
       try {
         _currentBrightness = await ScreenBrightnessUtil.getScreenBrightness(); // 调用插件获取亮度
         print("Current Brightness: $_currentBrightness");
       } catch (e) {
         print("Error getting brightness: $e");
       }
     }
   
     // 设置屏幕亮度
     Future<void> setScreenBrightness(double value) async {
       try {
         await ScreenBrightnessUtil.setScreenBrightness(value); // 调用插件设置亮度
         print("Screen brightness set to: $value");
       } catch (e) {
         print("Error setting brightness: $e");
       }
     }
   
     @override
     Widget build(BuildContext context) {
       return Scaffold(
         appBar: AppBar(
           title: Text('屏幕亮度控制示例'),
         ),
         body: Center(
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,
             children: <Widget>[
               ElevatedButton(
                 onPressed: () {
                   getCurrentBrightness(); // 获取当前亮度
                 },
                 child: Text('获取当前亮度'),
               ),
               SizedBox(height: 20),
               Slider(
                 value: _currentBrightness,
                 min: 0.0,
                 max: 1.0,
                 divisions: 10,
                 label: _currentBrightness.toString(),
                 onChanged: (double newValue) {
                   setState(() {
                     _currentBrightness = newValue;
                   });
                 },
                 onChangeEnd: (double value) {
                   setScreenBrightness(value); // 设置屏幕亮度
                 },
               ),
             ],
           ),
         ),
       );
     }
   }