system_info_3 是一个用于获取设备系统信息的 Flutter 插件。它可以获取设备的 CPU 信息、内存信息、磁盘信息、操作系统信息等。以下是如何使用 system_info_3 插件的基本指南。

1. 添加依赖

首先，你需要在 pubspec.yaml 文件中添加 system_info_3 插件的依赖：

dependencies:
  flutter:
    sdk: flutter
  system_info_3: ^0.1.1  # 请使用最新版本

然后运行 flutter pub get 来安装依赖。

2. 导入包

在 Dart 文件中导入 system_info_3 包：

import 'package:system_info_3/system_info_3.dart';

3. 获取系统信息

system_info_3 提供了多种方法来获取不同的系统信息。以下是一些常用的方法：

获取操作系统信息

void getOsInfo() async {
  try {
    var osInfo = await SystemInfo.osInfo;
    print('OS Name: ${osInfo.name}');
    print('OS Version: ${osInfo.version}');
    print('OS Build: ${osInfo.build}');
    print('OS Architecture: ${osInfo.architecture}');
  } catch (e) {
    print('Failed to get OS info: $e');
  }
}

获取 CPU 信息

void getCpuInfo() async {
  try {
    var cpuInfo = await SystemInfo.cpuInfo;
    print('CPU Model: ${cpuInfo.model}');
    print('CPU Cores: ${cpuInfo.cores}');
    print('CPU Speed: ${cpuInfo.speed}');
  } catch (e) {
    print('Failed to get CPU info: $e');
  }
}

获取内存信息

void getMemoryInfo() async {
  try {
    var memoryInfo = await SystemInfo.memoryInfo;
    print('Total Memory: ${memoryInfo.total}');
    print('Available Memory: ${memoryInfo.available}');
    print('Used Memory: ${memoryInfo.used}');
  } catch (e) {
    print('Failed to get Memory info: $e');
  }
}

获取磁盘信息

void getDiskInfo() async {
  try {
    var diskInfo = await SystemInfo.diskInfo;
    print('Total Disk Space: ${diskInfo.total}');
    print('Free Disk Space: ${diskInfo.free}');
    print('Used Disk Space: ${diskInfo.used}');
  } catch (e) {
    print('Failed to get Disk info: $e');
  }
}

4. 完整示例

以下是一个完整的示例，展示如何获取和打印系统信息：

import 'package:flutter/material.dart';
import 'package:system_info_3/system_info_3.dart';

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('System Info Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              ElevatedButton(
                onPressed: getOsInfo,
                child: Text('Get OS Info'),
              ),
              ElevatedButton(
                onPressed: getCpuInfo,
                child: Text('Get CPU Info'),
              ),
              ElevatedButton(
                onPressed: getMemoryInfo,
                child: Text('Get Memory Info'),
              ),
              ElevatedButton(
                onPressed: getDiskInfo,
                child: Text('Get Disk Info'),
              ),
            ],
          ),
        ),
      ),
    );
  }

  void getOsInfo() async {
    try {
      var osInfo = await SystemInfo.osInfo;
      print('OS Name: ${osInfo.name}');
      print('OS Version: ${osInfo.version}');
      print('OS Build: ${osInfo.build}');
      print('OS Architecture: ${osInfo.architecture}');
    } catch (e) {
      print('Failed to get OS info: $e');
    }
  }

  void getCpuInfo() async {
    try {
      var cpuInfo = await SystemInfo.cpuInfo;
      print('CPU Model: ${cpuInfo.model}');
      print('CPU Cores: ${cpuInfo.cores}');
      print('CPU Speed: ${cpuInfo.speed}');
    } catch (e) {
      print('Failed to get CPU info: $e');
    }
  }

  void getMemoryInfo() async {
    try {
      var memoryInfo = await SystemInfo.memoryInfo;
      print('Total Memory: ${memoryInfo.total}');
      print('Available Memory: ${memoryInfo.available}');
      print('Used Memory: ${memoryInfo.used}');
    } catch (e) {
      print('Failed to get Memory info: $e');
    }
  }

  void getDiskInfo() async {
    try {
      var diskInfo = await SystemInfo.diskInfo;
      print('Total Disk Space: ${diskInfo.total}');
      print('Free Disk Space: ${diskInfo.free}');
      print('Used Disk Space: ${diskInfo.used}');
    } catch (e) {
      print('Failed to get Disk info: $e');
    }
  }
}