安卓ServerSocket如何获取服务器的局域网ip地址

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiManager;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;

public class NetworkUtils {
    public static String getLocalIpAddress(Context context) {
        try {
            ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.isConnected()) {
                if (networkInfo.getType() == ConnectivityManager.TYPE_WIFI) {
                    WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
                    int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
                    String ipString = String.format("%d.%d.%d.%d",
                            (ipAddress & 0xff), (ipAddress >> 8 & 0xff), (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));
                    return ipString;
                } else if (networkInfo.getType() == ConnectivityManager.TYPE_ETHERNET) {
                    Enumeration<NetworkInterface> networkInterfaces = NetworkInterface.getNetworkInterfaces();
                    while (networkInterfaces.hasMoreElements()) {
                        NetworkInterface networkInterface = networkInterfaces.nextElement();
                        if (networkInterface.getName().startsWith("eth") || networkInterface.getName().startsWith("wlan")) {
                            Enumeration<InetAddress> inetAddresses = networkInterface.getInetAddresses();
                            while (inetAddresses.hasMoreElements()) {
                                InetAddress inetAddress = inetAddresses.nextElement();
                                if (!inetAddress.isLoopbackAddress() && inetAddress.getAddress().length == 4) {
                                    return inetAddress.getHostAddress();
                                }
                            }
                        }
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
}