Flutter WiFi管理插件c4w_wifi_sdk_flutter的使用

c4w_wifi_sdk_flutter 是一个 Flutter 插件，用于管理和控制设备的 WiFi 连接。通过这个插件，开发者可以在 Flutter 应用中实现扫描 WiFi 网络、连接 WiFi、断开连接、获取当前连接的 WiFi 信息等功能。

以下是 c4w_wifi_sdk_flutter 插件的基本使用步骤：

1. 添加依赖

首先，在 pubspec.yaml 文件中添加 c4w_wifi_sdk_flutter 插件的依赖：

dependencies:
  flutter:
    sdk: flutter
  c4w_wifi_sdk_flutter: ^1.0.0  # 请使用最新版本

然后运行 flutter pub get 来安装依赖。

2. 初始化插件

在使用插件之前，通常需要进行初始化操作。你可以在 main.dart 或某个页面的 initState 方法中进行初始化。

import 'package:c4w_wifi_sdk_flutter/c4w_wifi_sdk_flutter.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await C4wWifiSdkFlutter.initialize();
  runApp(MyApp());
}

3. 扫描 WiFi 网络

使用 scanWifi 方法来扫描附近的 WiFi 网络。

void scanWifi() async {
  List<WifiNetwork> wifiNetworks = await C4wWifiSdkFlutter.scanWifi();
  wifiNetworks.forEach((network) {
    print('SSID: ${network.ssid}, BSSID: ${network.bssid}, Signal Strength: ${network.signalStrength}');
  });
}

4. 连接 WiFi 网络

使用 connectToWifi 方法来连接指定的 WiFi 网络。

void connectToWifi(String ssid, String password) async {
  bool isConnected = await C4wWifiSdkFlutter.connectToWifi(ssid, password);
  if (isConnected) {
    print('Connected to $ssid');
  } else {
    print('Failed to connect to $ssid');
  }
}

5. 断开 WiFi 连接

使用 disconnectWifi 方法来断开当前连接的 WiFi 网络。

void disconnectWifi() async {
  bool isDisconnected = await C4wWifiSdkFlutter.disconnectWifi();
  if (isDisconnected) {
    print('Disconnected from WiFi');
  } else {
    print('Failed to disconnect from WiFi');
  }
}

6. 获取当前连接的 WiFi 信息

使用 getConnectedWifiInfo 方法来获取当前连接的 WiFi 信息。

void getConnectedWifiInfo() async {
  WifiNetwork? connectedWifi = await C4wWifiSdkFlutter.getConnectedWifiInfo();
  if (connectedWifi != null) {
    print('Connected WiFi: ${connectedWifi.ssid}, BSSID: ${connectedWifi.bssid}');
  } else {
    print('Not connected to any WiFi network');
  }
}

7. 处理权限

在 Android 上，访问 WiFi 信息需要一些权限。确保在 AndroidManifest.xml 文件中添加以下权限：

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

8. 处理定位权限

在 Android 10 及更高版本中，扫描 WiFi 网络需要定位权限。你需要请求用户授予定位权限。

import 'package:permission_handler/permission_handler.dart';

void requestLocationPermission() async {
  var status = await Permission.location.request();
  if (status.isGranted) {
    print('Location permission granted');
  } else {
    print('Location permission denied');
  }
}

9. 错误处理

在使用插件的过程中，可能会遇到各种错误。确保在使用插件时进行适当的错误处理。

void connectToWifi(String ssid, String password) async {
  try {
    bool isConnected = await C4wWifiSdkFlutter.connectToWifi(ssid, password);
    if (isConnected) {
      print('Connected to $ssid');
    } else {
      print('Failed to connect to $ssid');
    }
  } catch (e) {
    print('Error connecting to WiFi: $e');
  }
}

10. 示例代码

以下是一个完整的示例代码，展示了如何使用 c4w_wifi_sdk_flutter 插件：

import 'package:flutter/material.dart';
import 'package:c4w_wifi_sdk_flutter/c4w_wifi_sdk_flutter.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await C4wWifiSdkFlutter.initialize();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: WifiManagementPage(),
    );
  }
}

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

class _WifiManagementPageState extends State<WifiManagementPage> {
  List<WifiNetwork> wifiNetworks = [];

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

  void scanWifi() async {
    List<WifiNetwork> networks = await C4wWifiSdkFlutter.scanWifi();
    setState(() {
      wifiNetworks = networks;
    });
  }

  void connectToWifi(String ssid, String password) async {
    try {
      bool isConnected = await C4wWifiSdkFlutter.connectToWifi(ssid, password);
      if (isConnected) {
        print('Connected to $ssid');
      } else {
        print('Failed to connect to $ssid');
      }
    } catch (e) {
      print('Error connecting to WiFi: $e');
    }
  }

  void getConnectedWifiInfo() async {
    WifiNetwork? connectedWifi = await C4wWifiSdkFlutter.getConnectedWifiInfo();
    if (connectedWifi != null) {
      print('Connected WiFi: ${connectedWifi.ssid}, BSSID: ${connectedWifi.bssid}');
    } else {
      print('Not connected to any WiFi network');
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('WiFi Management'),
      ),
      body: ListView.builder(
        itemCount: wifiNetworks.length,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(wifiNetworks[index].ssid),
            subtitle: Text('Signal Strength: ${wifiNetworks[index].signalStrength}'),
            onTap: () {
              connectToWifi(wifiNetworks[index].ssid, 'your_password');
            },
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: getConnectedWifiInfo,
        child: Icon(Icons.wifi),
      ),
    );
  }
}