Flutter无线网络管理插件android_flutter_wifi的使用
Flutter无线网络管理插件android_flutter_wifi的使用
android_flutter_wifi
是一个用于Flutter应用程序的Android Wi-Fi插件,允许开发者获取可用的Wi-Fi接入点列表,并执行其他与Wi-Fi相关的操作。该插件仅适用于Android平台,因为Apple不允许开发者直接操作Wi-Fi。
1. 开始使用
1.1 添加权限
在 AndroidManifest.xml
文件中添加以下权限:
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-feature android:name="android.hardware.wifi" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
1.2 添加依赖
在 pubspec.yaml
文件中添加 permission_handler
依赖:
dependencies:
permission_handler: ^9.2.0
android_flutter_wifi: ^latest_version
2. 初始化插件
在使用插件之前,需要初始化并请求位置权限。init()
方法返回一个布尔值,表示权限是否已授予。
import 'package:android_flutter_wifi/android_flutter_wifi.dart';
import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
[@override](/user/override)
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String _platformVersion = 'Unknown';
[@override](/user/override)
void initState() {
super.initState();
initPlatformState();
}
Future<void> initPlatformState() async {
// 请求位置权限
var status = await Permission.location.request();
if (status.isGranted) {
// 初始化插件
await AndroidFlutterWifi.init();
setState(() {
_platformVersion = "Permission Granted";
});
} else {
setState(() {
_platformVersion = "Permission Denied";
});
}
}
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Wi-Fi Management Example'),
),
body: Center(
child: Text('Running on: $_platformVersion\n'),
),
floatingActionButton: FloatingActionButton(
onPressed: () {
getWifiList();
},
child: const Icon(Icons.wifi),
),
),
);
}
/// 获取Wi-Fi列表
void getWifiList() async {
List<WifiNetwork> wifiList = await AndroidFlutterWifi.getWifiScanResult();
if (wifiList.isNotEmpty) {
WifiNetwork wifiNetwork = wifiList[0];
print('Name: ${wifiNetwork.ssid}');
print('Signal Level: ${wifiNetwork.level}');
} else {
print('No Wi-Fi networks found');
}
}
}
3. 常用功能
3.1 获取Wi-Fi接入点列表
通过 getWifiScanResult()
方法可以获取当前可用的Wi-Fi接入点列表。每个 WifiNetwork
对象包含有关接入点的详细信息,例如SSID、信号强度等。
void getWifiList() async {
List<WifiNetwork> wifiList = await AndroidFlutterWifi.getWifiScanResult();
if (wifiList.isNotEmpty) {
for (var network in wifiList) {
print('SSID: ${network.ssid}, Signal Level: ${network.level}');
}
} else {
print('No Wi-Fi networks found');
}
}
3.2 检查连接速度
isConnectionFast()
方法可以检查当前Wi-Fi连接是否为快速连接。
void checkConnectionSpeed() {
bool isFast = AndroidFlutterWifi.isConnectionFast();
print('Is connection fast: $isFast');
}
3.3 获取连接类型
getConnectionType()
方法可以获取当前设备的连接类型(Wi-Fi 或蜂窝网络)。
void getConnectionType() {
String type = AndroidFlutterWifi.getConnectionType();
print('Connection type: $type');
}
3.4 获取当前Wi-Fi连接信息
getActiveWifiInfo()
方法可以获取当前设备连接的Wi-Fi网络的详细信息,包括IP地址、MAC地址等。
void getActiveWifiNetwork() async {
ActiveWifiNetwork activeWifiNetwork = await AndroidFlutterWifi.getActiveWifiInfo();
print('SSID: ${activeWifiNetwork.ssid}');
print('IP Address: ${activeWifiNetwork.ipAddress}');
print('MAC Address: ${activeWifiNetwork.macAddress}');
}
3.5 获取DHCP信息
getDhcpInfo()
方法可以获取当前Wi-Fi网络的DHCP信息,例如网关地址。
void getDhcpInfo() async {
DhcpInfo dhcpInfo = await AndroidFlutterWifi.getDhcpInfo();
String gatewayIp = AndroidFlutterWifi.toIp(dhcpInfo.gateway!);
String formedIp = AndroidFlutterWifi.getFormedIp(gatewayIp);
print('Gateway: $gatewayIp');
print('Formed IP: $formedIp');
}
3.6 连接到指定的Wi-Fi网络
connectToNetwork()
方法可以连接到指定的Wi-Fi网络,需要提供SSID和密码。
void connectToNetwork() async {
String ssid = 'Your_SSID';
String password = 'Your_Password';
if (ssid.isEmpty || password.isEmpty) {
throw ("SSID and Password can't be empty");
}
bool result = await AndroidFlutterWifi.connectToNetwork(ssid, password);
print('Connection result: $result');
}
3.7 获取所有已保存的Wi-Fi网络
getConfiguredNetworks()
方法可以获取设备上所有已保存的Wi-Fi网络。
void getConfiguredNetworks() async {
List<ConfiguredNetwork> list = await AndroidFlutterWifi.getConfiguredNetworks();
for (var network in list) {
print('Network ID: ${network.networkId}');
}
}
3.8 忘记指定的Wi-Fi网络
forgetWifiWithSSID()
方法可以通过提供SSID来忘记指定的Wi-Fi网络。
void forgetWifi() async {
ActiveWifiNetwork activeWifiNetwork = await AndroidFlutterWifi.getActiveWifiInfo();
bool result = await AndroidFlutterWifi.forgetWifiWithSSID(activeWifiNetwork.ssid!);
print('Forget Wi-Fi result: $result');
}
3.9 连接到预配置的Wi-Fi网络
connectToNetworkWithSSID()
方法可以连接到预配置的Wi-Fi网络,只需提供SSID即可。
void connectToPreconfiguredNetwork() async {
bool result = await AndroidFlutterWifi.connectToNetworkWithSSID('Your_SSID');
print('Connection result: $result');
}
4. 其他功能
- 启用/禁用Wi-Fi:可以使用
enableWifi()
和disableWifi()
方法来启用或禁用设备的Wi-Fi。 - 检查Wi-Fi是否已启用:使用
isWifiEnabled()
方法可以检查设备的Wi-Fi是否已启用。
void enableOrDisableWifi(bool enable) async {
if (enable) {
await AndroidFlutterWifi.enableWifi();
} else {
await AndroidFlutterWifi.disableWifi();
}
}
void checkWifiStatus() async {
bool isEnabled = await AndroidFlutterWifi.isWifiEnabled();
print('Wi-Fi is enabled: $isEnabled');
}
5. 注意事项
- 如果您的IP地址格式不正确或反转,可以使用
getFormedIp()
方法来获取格式正确的IP地址。 - 该插件要求在Android 9.0及以上版本中启用位置权限,以自动启用Wi-Fi。请确保已启用GPS。
6. 完整示例代码
以下是一个完整的示例代码,展示了如何使用 android_flutter_wifi
插件来管理Wi-Fi连接:
import 'package:android_flutter_wifi/android_flutter_wifi.dart';
import 'package:flutter/material.dart';
import 'package:permission_handler/permission_handler.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
[@override](/user/override)
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String _platformVersion = 'Unknown';
[@override](/user/override)
void initState() {
super.initState();
initPlatformState();
}
Future<void> initPlatformState() async {
// 请求位置权限
var status = await Permission.location.request();
if (status.isGranted) {
// 初始化插件
await AndroidFlutterWifi.init();
setState(() {
_platformVersion = "Permission Granted";
});
} else {
setState(() {
_platformVersion = "Permission Denied";
});
}
}
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Wi-Fi Management Example'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text('Running on: $_platformVersion\n'),
ElevatedButton(
onPressed: getWifiList,
child: const Text('Get Wi-Fi List'),
),
ElevatedButton(
onPressed: checkConnectionSpeed,
child: const Text('Check Connection Speed'),
),
ElevatedButton(
onPressed: getConnectionType,
child: const Text('Get Connection Type'),
),
ElevatedButton(
onPressed: getActiveWifiNetwork,
child: const Text('Get Active Wi-Fi Info'),
),
ElevatedButton(
onPressed: getDhcpInfo,
child: const Text('Get DHCP Info'),
),
ElevatedButton(
onPressed: connectToNetwork,
child: const Text('Connect to Wi-Fi'),
),
ElevatedButton(
onPressed: getConfiguredNetworks,
child: const Text('Get Saved Networks'),
),
ElevatedButton(
onPressed: forgetWifi,
child: const Text('Forget Wi-Fi'),
),
ElevatedButton(
onPressed: connectToPreconfiguredNetwork,
child: const Text('Connect to Pre-configured Network'),
),
],
),
),
),
);
}
/// 获取Wi-Fi列表
void getWifiList() async {
List<WifiNetwork> wifiList = await AndroidFlutterWifi.getWifiScanResult();
if (wifiList.isNotEmpty) {
for (var network in wifiList) {
print('SSID: ${network.ssid}, Signal Level: ${network.level}');
}
} else {
print('No Wi-Fi networks found');
}
}
/// 检查连接速度
void checkConnectionSpeed() {
bool isFast = AndroidFlutterWifi.isConnectionFast();
print('Is connection fast: $isFast');
}
/// 获取连接类型
void getConnectionType() {
String type = AndroidFlutterWifi.getConnectionType();
print('Connection type: $type');
}
/// 获取当前Wi-Fi连接信息
void getActiveWifiNetwork() async {
ActiveWifiNetwork activeWifiNetwork = await AndroidFlutterWifi.getActiveWifiInfo();
print('SSID: ${activeWifiNetwork.ssid}');
print('IP Address: ${activeWifiNetwork.ipAddress}');
print('MAC Address: ${activeWifiNetwork.macAddress}');
}
/// 获取DHCP信息
void getDhcpInfo() async {
DhcpInfo dhcpInfo = await AndroidFlutterWifi.getDhcpInfo();
String gatewayIp = AndroidFlutterWifi.toIp(dhcpInfo.gateway!);
String formedIp = AndroidFlutterWifi.getFormedIp(gatewayIp);
print('Gateway: $gatewayIp');
print('Formed IP: $formedIp');
}
/// 连接到指定的Wi-Fi网络
void connectToNetwork() async {
String ssid = 'Your_SSID';
String password = 'Your_Password';
if (ssid.isEmpty || password.isEmpty) {
throw ("SSID and Password can't be empty");
}
bool result = await AndroidFlutterWifi.connectToNetwork(ssid, password);
print('Connection result: $result');
}
/// 获取所有已保存的Wi-Fi网络
void getConfiguredNetworks() async {
List<ConfiguredNetwork> list = await AndroidFlutterWifi.getConfiguredNetworks();
for (var network in list) {
print('Network ID: ${network.networkId}');
}
}
/// 忘记指定的Wi-Fi网络
void forgetWifi() async {
ActiveWifiNetwork activeWifiNetwork = await AndroidFlutterWifi.getActiveWifiInfo();
bool result = await AndroidFlutterWifi.forgetWifiWithSSID(activeWifiNetwork.ssid!);
print('Forget Wi-Fi result: $result');
}
/// 连接到预配置的Wi-Fi网络
void connectToPreconfiguredNetwork() async {
bool result = await AndroidFlutterWifi.connectToNetworkWithSSID('Your_SSID');
print('Connection result: $result');
}
}
更多关于Flutter无线网络管理插件android_flutter_wifi的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter无线网络管理插件android_flutter_wifi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,android_flutter_wifi
是一个用于 Flutter 的插件,它允许你在 Android 设备上管理无线网络连接。以下是一个基本的使用示例,展示如何通过 Flutter 代码来使用这个插件。
首先,你需要在 Flutter 项目中添加 android_flutter_wifi
插件。打开你的 pubspec.yaml
文件,并在 dependencies
部分添加以下行:
dependencies:
flutter:
sdk: flutter
android_flutter_wifi: ^x.y.z # 请替换为最新版本号
然后,运行 flutter pub get
来获取插件。
接下来,你需要对 Android 项目进行一些配置,以便插件能够正常工作。在 android/app/src/main/AndroidManifest.xml
文件中,添加以下权限:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
由于 ACCESS_FINE_LOCATION
和 ACCESS_COARSE_LOCATION
权限在 Android 6.0(API 级别 23)及以上版本中需要在运行时请求,你还需要在 Dart 代码中处理这些权限请求。
以下是一个完整的 Flutter 代码示例,展示如何使用 android_flutter_wifi
插件来扫描 WiFi 网络并连接到指定的网络:
import 'package:flutter/material.dart';
import 'package:android_flutter_wifi/android_flutter_wifi.dart';
import 'package:permission_handler/permission_handler.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
List<WifiScanResult> wifiList = [];
bool isScanning = false;
bool isConnecting = false;
@override
void initState() {
super.initState();
_requestPermissions();
}
Future<void> _requestPermissions() async {
Map<Permission, PermissionStatus> statuses = await Permission.requestMultiple([
Permission.accessFineLocation,
Permission.accessWifiState,
Permission.changeWifiState,
Permission.changeNetworkState,
]);
if (statuses[Permission.accessFineLocation]?.isGranted == true &&
statuses[Permission.accessWifiState]?.isGranted == true &&
statuses[Permission.changeWifiState]?.isGranted == true &&
statuses[Permission.changeNetworkState]?.isGranted == true) {
// Permissions granted, proceed with scanning
} else {
// Handle permission denial
}
}
Future<void> scanWifi() async {
setState(() {
isScanning = true;
});
try {
wifiList = await Wifi.scanResults();
} catch (e) {
print("Error scanning WiFi: $e");
} finally {
setState(() {
isScanning = false;
});
}
}
Future<void> connectToWifi(String ssid, String password) async {
setState(() {
isConnecting = true;
});
try {
bool success = await Wifi.connect(ssid, password);
if (success) {
print("Connected to $ssid");
} else {
print("Failed to connect to $ssid");
}
} catch (e) {
print("Error connecting to WiFi: $e");
} finally {
setState(() {
isConnecting = false;
});
}
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: Text('WiFi Manager'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
children: <Widget>[
Button(
child: Text('Scan WiFi'),
onPressed: () {
if (!isScanning) {
scanWifi();
}
},
),
SizedBox(height: 16),
Expanded(
child: ListView.builder(
shrinkWrap: true,
itemCount: wifiList.length,
itemBuilder: (context, index) {
WifiScanResult wifi = wifiList[index];
return ListTile(
title: Text(wifi.ssid),
subtitle: Text("${wifi.bssid} - ${wifi.level} dB"),
trailing: IconButton(
icon: Icon(Icons.connect_without_protection),
onPressed: () {
// Replace with your actual password
String password = "your_password_here";
connectToWifi(wifi.ssid, password);
},
),
);
},
),
),
],
),
),
),
);
}
}
请注意:
- 代码中使用了
permission_handler
插件来处理运行时权限请求。你需要将其添加到pubspec.yaml
文件中并运行flutter pub get
。 - 替换
your_password_here
为你要连接 WiFi 网络的实际密码。 - 插件的某些功能可能依赖于设备的 Android 版本和制造商的定制,因此在实际应用中,请确保在多个设备上进行测试。
这个示例展示了如何使用 android_flutter_wifi
插件来扫描 WiFi 网络并连接到指定的网络。根据你的具体需求,你可以进一步扩展和修改这个示例。