Android 获取当前网络IPv4 & IPv6地址

/** * 从第一个非本地主机接口获取IP地址
 *
 * @param useIPv4 true =返回ipv4，false =返回ipv6
 * @return 地址或空字符串
 */
public static String getIPAddress(boolean useIPv4) {
    try {
        List<NetworkInterface> interfaces = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface networkInterface : interfaces) {
            List<InetAddress> addresses = Collections.list(networkInterface.getInetAddresses()); 
           for (InetAddress address : addresses) {
                if (!address.isLoopbackAddress()) {
                    String sAddr = address.getHostAddress();
                    boolean isIPv4 = sAddr.indexOf(':') < 0;
                    if (useIPv4) {
                        if (isIPv4) {
                            return sAddr;
                        }
                    } else {
                        if (!isIPv4) {
                            // 删除ip6区域后缀
                            int delim = sAddr.indexOf('%');
                            return delim < 0 ? sAddr.toUpperCase() : sAddr.substring(0, delim).toUpperCase();
                        }
                    }
                }
            }
        }
    }catch (Exception ignored) {
    }
    return "";
}