android11 连接wifi代码
时间: 2023-05-18 08:02:43 浏览: 136
以下是一个简单的 Android 11 连接 WiFi 的代码示例:
```
WifiManager wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = "\"YOUR_SSID\"";
wifiConfig.preSharedKey = "\"YOUR_PASSWORD\"";
int netId = wifiManager.addNetwork(wifiConfig);
wifiManager.enableNetwork(netId, true);
wifiManager.reconnect();
```
请注意,这只是一个简单的示例代码,实际上连接 WiFi 的代码可能会更加复杂,需要考虑到各种情况,例如 WiFi 是否可用、密码是否正确等等。
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android11 连接指定wifi代码
以下是Android 11连接指定WiFi的代码示例:
1. 首先,需要获取WiFi的SSID和密码:
```java
String ssid = "WiFi名称";
String password = "WiFi密码";
```
2. 接下来,需要创建一个WifiNetworkSpecifier对象,用于指定要连接的WiFi:
```java
WifiNetworkSpecifier specifier = new WifiNetworkSpecifier.Builder()
.setSsid(ssid)
.setWpa2Passphrase(password)
.build();
```
3. 然后,需要创建一个NetworkRequest对象,用于请求连接到指定的WiFi:
```java
NetworkRequest request = new NetworkRequest.Builder()
.addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
.setNetworkSpecifier(specifier)
.build();
```
4. 接下来,需要注册一个NetworkCallback回调函数,用于监听网络连接状态:
```java
ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
ConnectivityManager.NetworkCallback networkCallback = new ConnectivityManager.NetworkCallback() {
@Override
public void onAvailable(Network network) {
// WiFi已连接
}
@Override
public void onLost(Network network) {
// WiFi已断开
}
};
connectivityManager.requestNetwork(request, networkCallback);
```
5. 最后,需要在应用退出时取消网络请求:
```java
connectivityManager.unregisterNetworkCallback(networkCallback);
```
以上示例代码可以帮助您在Android 11中连接指定的WiFi。请注意,需要在AndroidManifest.xml中声明以下权限:
```xml
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
```
android应用开发 android11 连接指定wifi代码
以下是连接指定wifi的Android 11代码示例:
1. 在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" />
```
2. 在Activity中添加以下代码:
```java
private static final String SSID = "指定的Wi-Fi名称";
private static final String PASSWORD = "指定的Wi-Fi密码";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// 检查是否已连接到指定的Wi-Fi
if (isConnectedToSSID(SSID)) {
Toast.makeText(this, "已连接到指定Wi-Fi", Toast.LENGTH_SHORT).show();
} else {
// 连接指定的Wi-Fi
connectToSSID(SSID, PASSWORD);
}
}
private boolean isConnectedToSSID(String ssid) {
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
return wifiInfo != null && ssid.equals(wifiInfo.getSSID());
}
private void connectToSSID(String ssid, String password) {
WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(Context.WIFI_SERVICE);
WifiNetworkSpecifier.Builder builder = new WifiNetworkSpecifier.Builder();
builder.setSsid(ssid);
builder.setWpa2Passphrase(password);
WifiNetworkSpecifier wifiNetworkSpecifier = builder.build();
NetworkRequest.Builder networkRequestBuilder = new NetworkRequest.Builder();
networkRequestBuilder.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
networkRequestBuilder.setNetworkSpecifier(wifiNetworkSpecifier);
NetworkRequest networkRequest = networkRequestBuilder.build();
ConnectivityManager connectivityManager = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
connectivityManager.requestNetwork(networkRequest, new ConnectivityManager.NetworkCallback() {
@Override
public void onAvailable(@NonNull Network network) {
super.onAvailable(network);
wifiManager.bindProcessToNetwork(network);
Toast.makeText(MainActivity.this, "已连接到指定Wi-Fi", Toast.LENGTH_SHORT).show();
}
@Override
public void onUnavailable() {
super.onUnavailable();
Toast.makeText(MainActivity.this, "连接Wi-Fi失败", Toast.LENGTH_SHORT).show();
}
});
}
```
以上代码将检查是否已连接到指定的Wi-Fi,如果没有连接,则使用指定的Wi-Fi名称和密码连接到Wi-Fi网络。请注意,此代码需要在Android 10或更高版本上才能正常工作。
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