Flutter电源管理插件power_setting_windows的使用

Flutter电源管理插件power_setting_windows的使用

power_setting_windows 是一个用于接收Windows电源设置通知的Flutter插件。

开始使用

监听电源设置通知：

class _MyAppState extends State<MyApp> with PowerSettingObserver {
  final TextEditingController _textEditingController = TextEditingController();

  void logToScreen(String message) {
    DateFormat dateFormat = DateFormat('yyyy-MM-dd HH:mm:ss.S');
    String dateTime = dateFormat.format(DateTime.now());
    if (kDebugMode) {
      print('$dateTime $message');
    }
    setState(() {
      _textEditingController.text += '$dateTime $message\n';
    });
  }

  [@override](/user/override)
  void initState() {
    super.initState();
    PowerSettingWindows.addObserver(this);
  }

  [@override](/user/override)
  void dispose() {
    PowerSettingWindows.removeObserver(this);
    super.dispose();
  }

  [@override](/user/override)
  void didChangeConsoleDisplayState(ConsoleDisplayState state) {
    logToScreen('[didChangeConsoleDisplayState] state: $state');
  }

  [@override](/user/override)
  void didChangeSessionDisplayState(SessionDisplayState state) {
    logToScreen('[didChangeSessionDisplayState] state: $state');
  }

  [@override](/user/override)
  void didChangeSessionUserState(SessionUserState state) {
    logToScreen('[didChangeSessionUserState] state: $state');
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Windows电源设置通知'),
        ),
        body: Padding(
          padding: const EdgeInsets.symmetric(vertical: 20, horizontal: 30),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              const Text('日志', style: TextStyle(fontSize: 18)),
              const SizedBox(height: 5),
              TextField(
                decoration: const InputDecoration(border: OutlineInputBorder()),
                controller: _textEditingController,
                maxLines: 20,
                readOnly: true,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

完整示例Demo

以下是完整的示例代码，你可以直接运行这个代码来测试 power_setting_windows 插件的功能。

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';

import 'package:power_setting_windows/model/console_display_state.dart';
import 'package:power_setting_windows/model/session_display_state.dart';
import 'package:power_setting_windows/model/session_user_state.dart';
import 'package:power_setting_windows/power_setting_observer.dart';
import 'package:power_setting_windows/power_setting_windows.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> with PowerSettingObserver {
  final TextEditingController _textEditingController = TextEditingController();

  void logToScreen(String message) {
    DateFormat dateFormat = DateFormat('yyyy-MM-dd HH:mm:ss.S');
    String dateTime = dateFormat.format(DateTime.now());
    if (kDebugMode) {
      print('$dateTime $message');
    }
    setState(() {
      _textEditingController.text += '$dateTime $message\n';
    });
  }

  [@override](/user/override)
  void initState() {
    super.initState();
    PowerSettingWindows.addObserver(this);
  }

  [@override](/user/override)
  void dispose() {
    PowerSettingWindows.removeObserver(this);
    super.dispose();
  }

  [@override](/user/override)
  void didChangeConsoleDisplayState(ConsoleDisplayState state) {
    logToScreen('[didChangeConsoleDisplayState] state: $state');
  }

  [@override](/user/override)
  void didChangeSessionDisplayState(SessionDisplayState state) {
    logToScreen('[didChangeSessionDisplayState] state: $state');
  }

  [@override](/user/override)
  void didChangeSessionUserState(SessionUserState state) {
    logToScreen('[didChangeSessionUserState] state: $state');
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Windows电源设置通知'),
        ),
        body: Padding(
          padding: const EdgeInsets.symmetric(vertical: 20, horizontal: 30),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              const Text('日志', style: TextStyle(fontSize: 18)),
              const SizedBox(height: 5),
              TextField(
                decoration: const InputDecoration(border: OutlineInputBorder()),
                controller: _textEditingController,
                maxLines: 20,
                readOnly: true,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

更多关于Flutter电源管理插件power_setting_windows的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter电源管理插件power_setting_windows的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


当然，以下是如何在Flutter项目中使用power_setting_windows插件进行电源管理的示例代码。power_setting_windows插件允许你在Windows平台上访问和修改电源设置。

首先，确保你已经在Flutter项目中添加了power_setting_windows插件。你可以通过以下命令添加：

flutter pub add power_setting_windows

然后，在你的pubspec.yaml文件中，你应该看到类似如下的依赖项：

dependencies:
  flutter:
    sdk: flutter
  power_setting_windows: ^最新版本号

请确保将最新版本号替换为实际的最新版本号。

接下来，你需要对插件进行平台特定的配置。对于Windows平台，你可能需要在windows目录下创建或修改CMakeLists.txt和PluginRegistrant.cpp文件，但通常power_setting_windows插件已经为你处理好了这些。

以下是一个完整的Flutter应用示例，展示了如何使用power_setting_windows插件来获取和设置电源计划：

import 'package:flutter/material.dart';
import 'package:power_setting_windows/power_setting_windows_plugin.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String? currentPowerPlan;
  List<String>? availablePowerPlans;

  @override
  void initState() {
    super.initState();
    _getCurrentPowerPlan();
    _getAvailablePowerPlans();
  }

  Future<void> _getCurrentPowerPlan() async {
    String? powerPlan = await PowerSettingWindowsPlugin.currentPowerPlan;
    setState(() {
      currentPowerPlan = powerPlan;
    });
  }

  Future<void> _getAvailablePowerPlans() async {
    List<String>? plans = await PowerSettingWindowsPlugin.availablePowerPlans;
    setState(() {
      availablePowerPlans = plans;
    });
  }

  Future<void> _setPowerPlan(String plan) async {
    bool success = await PowerSettingWindowsPlugin.setPowerPlan(plan);
    if (success) {
      _getCurrentPowerPlan();
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('Power plan set to $plan')),
      );
    } else {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('Failed to set power plan')),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Power Setting Example'),
        ),
        body: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Text('Current Power Plan:', style: TextStyle(fontSize: 18)),
              Text(currentPowerPlan ?? 'Unknown', style: TextStyle(fontSize: 16)),
              SizedBox(height: 16),
              Text('Available Power Plans:', style: TextStyle(fontSize: 18)),
              DropdownButton<String>(
                value: currentPowerPlan,
                hint: Text('Select a power plan'),
                onChanged: (newValue) {
                  _setPowerPlan(newValue!);
                },
                items: availablePowerPlans?.map((String value) {
                  return DropdownMenuItem<String>(
                    value: value,
                    child: Text(value),
                  );
                })?.toList() ?? [],
              ),
            ],
          ),
        ),
      ),
    );
  }
}

在这个示例中，我们：

  1. 使用PowerSettingWindowsPlugin.currentPowerPlan获取当前的电源计划。
  2. 使用PowerSettingWindowsPlugin.availablePowerPlans获取所有可用的电源计划。
  3. 使用PowerSettingWindowsPlugin.setPowerPlan设置新的电源计划。

注意：由于电源管理通常需要管理员权限，因此在实际应用中，你可能需要确保你的应用程序具有足够的权限来更改电源设置。在某些情况下，你可能需要提示用户以管理员身份运行你的应用。

另外，此示例代码仅适用于Windows平台。对于其他平台，你可能需要实现不同的逻辑或使用其他插件。

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