安卓，使用"Inet4Address.getLocalHost().getHostAddress();“访问设备IP地址抛出异常

import android.content.Context;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiInfo;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;

// 获取设备IP地址的方法
public String getDeviceIpAddress(Context context) {
    String ipAddress = "";
    try {
        // 获取WifiManager实例
        WifiManager wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
        
        // 检查Wifi是否已连接
        if (wifiManager.isWifiEnabled()) {
            // 获取WifiInfo实例
            WifiInfo wifiInfo = wifiManager.getConnectionInfo();
            
            // 获取IP地址
            int ip = wifiInfo.getIpAddress();
            
            // 转换IP地址为字符串形式
            ipAddress = String.format("%d.%d.%d.%d",
                    (ip & 0xff), (ip >> 8 & 0xff), (ip >> 16 & 0xff), (ip >> 24 & 0xff));
        } else {
            // 获取移动网络连接的IP地址
            ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
            NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
            if (networkInfo != null && networkInfo.isConnected()) {
                if (networkInfo.getType() == ConnectivityManager.TYPE_MOBILE) {
                    // 获取移动网络IP地址
                    ipAddress = getMobileIpAddress();
                }
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return ipAddress;
}

// 获取移动网络IP地址的方法
private String getMobileIpAddress() {
    try {
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
            NetworkInterface networkInterface = en.nextElement();
            for (Enumeration<InetAddress> enumIpAddr = networkInterface.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                InetAddress inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress() && inetAddress instanceof Inet4Address) {
                    return inetAddress.getHostAddress();
                }
            }
        }
    } catch (SocketException e) {
        e.printStackTrace();
    }
    return "";
}