android wifi热点广播,在 Android wifi热点中,udp获取wifi广播地址
时间: 2024-03-17 12:44:09 浏览: 110
要获取Android wifi热点的广播地址,可以通过以下步骤进行:
1. 获取当前设备的IP地址
```java
WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
int ipAddress = wifiInfo.getIpAddress();
String ip = Formatter.formatIpAddress(ipAddress);
```
2. 将IP地址转换为广播地址
```java
String[] ipArray = ip.split("\\.");
ipArray[3] = "255";
String broadcastAddress = String.join(".", ipArray);
```
3. 使用UDP发送广播消息
```java
DatagramSocket socket = new DatagramSocket();
socket.setBroadcast(true);
byte[] data = "Hello, world!".getBytes();
DatagramPacket packet = new DatagramPacket(data, data.length, InetAddress.getByName(broadcastAddress), 8888);
socket.send(packet);
```
这样就可以在Android wifi热点中发送UDP广播消息了。注意,这里的端口号是任意指定的,可以根据实际需要进行修改。
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