/**
 * 得到有線閘道器的IP地址
 *
 * @return
 */
private String getLocalIp() {

    try {
        // 獲取本地裝置的所有網路介面
        Enumeration<NetworkInterface> enumerationNi = NetworkInterface
                .getNetworkInterfaces();
        while (enumerationNi.hasMoreElements()) {
            NetworkInterface networkInterface = enumerationNi.nextElement();
            String interfaceName = networkInterface.getDisplayName();
            Log.i("tag", "網路名字" + interfaceName);

            // 如果是有限網絡卡
            if (interfaceName.equals("eth0")) {
                Enumeration<InetAddress> enumIpAddr = networkInterface
                        .getInetAddresses();

                while (enumIpAddr.hasMoreElements()) {
                    // 返回列舉集合中的下一個IP地址資訊
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    // 不是迴環地址，並且是ipv4的地址
                    if (!inetAddress.isLoopbackAddress()
                            && inetAddress instanceof Inet4Address) {
                        Log.i("tag", inetAddress.getHostAddress() + "   ");

                        return inetAddress.getHostAddress();
                    }
                }
            }
        }

    } catch (SocketException e) {
        e.printStackTrace();
    }
    return "";

}

/**
 * 得到無線閘道器的IP地址
 *
 * @return
 */
private String getWirelseeIp() {

    try {
        // 獲取本地裝置的所有網路介面
        Enumeration<NetworkInterface> enumerationNi = NetworkInterface
                .getNetworkInterfaces();
        while (enumerationNi.hasMoreElements()) {
            NetworkInterface networkInterface = enumerationNi.nextElement();
            String interfaceName = networkInterface.getDisplayName();
            Log.i("tag", "網路名字" + interfaceName);

            // 如果是無線網絡卡
            if (interfaceName.equals("wlan0")) {
                Enumeration<InetAddress> enumIpAddr = networkInterface
                        .getInetAddresses();

                while (enumIpAddr.hasMoreElements()) {
                    // 返回列舉集合中的下一個IP地址資訊
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    // 不是迴環地址，並且是ipv4的地址
                    if (!inetAddress.isLoopbackAddress()
                            && inetAddress instanceof Inet4Address) {
                        Log.i("tag", inetAddress.getHostAddress() + "   ");

                        return inetAddress.getHostAddress();
                    }
                }
            }
        }

    } catch (SocketException e) {
        e.printStackTrace();
    }
    return "";

}

/**
 * 得到無線閘道器的IP地址
 *
 * @return
 */
private void getAllIp() {

    try {
        // 獲取本地裝置的所有網路介面
        Enumeration<NetworkInterface> enumerationNi = NetworkInterface
                .getNetworkInterfaces();
        while (enumerationNi.hasMoreElements()) {
            NetworkInterface networkInterface = enumerationNi.nextElement();
            String interfaceName = networkInterface.getDisplayName();
            Log.i("tag", "網路名字" + interfaceName);

            Enumeration<InetAddress> enumIpAddr = networkInterface
                    .getInetAddresses();

            while (enumIpAddr.hasMoreElements()) {
                // 返回列舉集合中的下一個IP地址資訊
                InetAddress inetAddress = enumIpAddr.nextElement();
                Log.i("tag", inetAddress.getHostAddress() + "哪個型別的   " + inetAddress.getClass().toString());

            }
        }

    } catch (SocketException e) {
        e.printStackTrace();
    }

}
/**
 * 得到IP地址
 *
 * @return
 */
private String getIpAddress() {
    String ip = "";
    try {
        Enumeration<NetworkInterface> enumNetworkInterfaces = NetworkInterface
                .getNetworkInterfaces();
        while (enumNetworkInterfaces.hasMoreElements()) {
            NetworkInterface networkInterface = enumNetworkInterfaces
                    .nextElement();
            Enumeration<InetAddress> enumInetAddress = networkInterface
                    .getInetAddresses();
            while (enumInetAddress.hasMoreElements()) {
                InetAddress inetAddress = enumInetAddress.nextElement();

                if (inetAddress.isSiteLocalAddress()) {
                    ip += "SiteLocalAddress: "
                            + inetAddress.getHostAddress() + "\n";
                   
                }

            }

        }

    } catch (SocketException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
         ip += "Something Wrong! " + e.toString() + "\n";
       
    }

    return ip;
}