device_system_information 是一个 Flutter 插件，用于查询设备的各种系统信息，如设备型号、操作系统版本、电池状态、网络状态等。这个插件可以帮助开发者获取设备的详细信息，以便在应用中进行相应的处理或展示。

安装插件

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

dependencies:
  flutter:
    sdk: flutter
  device_system_information: ^1.0.0  # 请使用最新版本

然后运行 flutter pub get 来安装插件。

使用插件

以下是一些常见的用法示例：

1. 获取设备信息

import 'package:device_system_information/device_system_information.dart';

void getDeviceInfo() async {
  String deviceModel = await DeviceSystemInformation.deviceModel;
  String deviceManufacturer = await DeviceSystemInformation.deviceManufacturer;
  String osVersion = await DeviceSystemInformation.osVersion;

  print('Device Model: $deviceModel');
  print('Device Manufacturer: $deviceManufacturer');
  print('OS Version: $osVersion');
}

2. 获取电池信息

import 'package:device_system_information/device_system_information.dart';

void getBatteryInfo() async {
  int batteryLevel = await DeviceSystemInformation.batteryLevel;
  bool isCharging = await DeviceSystemInformation.isCharging;

  print('Battery Level: $batteryLevel%');
  print('Is Charging: $isCharging');
}

3. 获取网络信息

import 'package:device_system_information/device_system_information.dart';

void getNetworkInfo() async {
  String ipAddress = await DeviceSystemInformation.ipAddress;
  String networkType = await DeviceSystemInformation.networkType;

  print('IP Address: $ipAddress');
  print('Network Type: $networkType');
}

4. 获取存储信息

import 'package:device_system_information/device_system_information.dart';

void getStorageInfo() async {
  int totalInternalStorage = await DeviceSystemInformation.totalInternalStorage;
  int availableInternalStorage = await DeviceSystemInformation.availableInternalStorage;

  print('Total Internal Storage: $totalInternalStorage bytes');
  print('Available Internal Storage: $availableInternalStorage bytes');
}

注意事项

1. 权限：某些信息（如网络状态、电池状态）可能需要特定的权限。请确保在 AndroidManifest.xml 和 Info.plist 中添加相应的权限声明。

2. 平台支持：device_system_information 插件可能不支持所有平台的所有功能。请查阅插件的文档以了解具体的平台支持情况。

3. 错误处理：在实际使用中，建议添加错误处理逻辑，以应对可能出现的异常情况。

示例代码

以下是一个完整的示例，展示如何使用 device_system_information 插件获取并显示设备的各种信息：

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Device System Information'),
        ),
        body: Center(
          child: DeviceInfoWidget(),
        ),
      ),
    );
  }
}

class DeviceInfoWidget extends StatefulWidget {
  [@override](/user/override)
  _DeviceInfoWidgetState createState() => _DeviceInfoWidgetState();
}

class _DeviceInfoWidgetState extends State<DeviceInfoWidget> {
  String deviceModel = 'Unknown';
  String osVersion = 'Unknown';
  int batteryLevel = 0;
  bool isCharging = false;
  String ipAddress = 'Unknown';
  String networkType = 'Unknown';
  int totalInternalStorage = 0;
  int availableInternalStorage = 0;

  [@override](/user/override)
  void initState() {
    super.initState();
    getDeviceInfo();
  }

  void getDeviceInfo() async {
    deviceModel = await DeviceSystemInformation.deviceModel;
    osVersion = await DeviceSystemInformation.osVersion;
    batteryLevel = await DeviceSystemInformation.batteryLevel;
    isCharging = await DeviceSystemInformation.isCharging;
    ipAddress = await DeviceSystemInformation.ipAddress;
    networkType = await DeviceSystemInformation.networkType;
    totalInternalStorage = await DeviceSystemInformation.totalInternalStorage;
    availableInternalStorage = await DeviceSystemInformation.availableInternalStorage;

    setState(() {});
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Column(
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        Text('Device Model: $deviceModel'),
        Text('OS Version: $osVersion'),
        Text('Battery Level: $batteryLevel%'),
        Text('Is Charging: $isCharging'),
        Text('IP Address: $ipAddress'),
        Text('Network Type: $networkType'),
        Text('Total Internal Storage: $totalInternalStorage bytes'),
        Text('Available Internal Storage: $availableInternalStorage bytes'),
      ],
    );
  }
}