复制代码 代码如下:

private InetAddress getBroadcastAddress() throws IOException {

WifiManager myWifiManager = (WifiManager) getSystemService(WIFI_SERVICE);

DhcpInfo myDhcpInfo = myWifiManager.getDhcpInfo();

if (myDhcpInfo == null) {

System.out.println("Could not get broadcast address");

return null;

}

int broadcast = (myDhcpInfo.ipAddress & myDhcpInfo.netmask)

| ~myDhcpInfo.netmask;

byte[] quads = new byte[4];

for (int k = 0; k < 4; k++)

quads[k] = (byte) ((broadcast >> k * 8) & 0xFF);

return InetAddress.getByAddress(quads);

}