获取本地的IP地址

/**
 * 得到有线网关的IP地址
 *
 * @return
 */
private String getLocalIp() {

    try {
        // 获取本地设备的所有网络接口
        Enumeration enumerationNi = NetworkInterface
                .getNetworkInterfaces();
        while (enumerationNi.hasMoreElements()) {
            NetworkInterface networkInterface = enumerationNi.nextElement();
            String interfaceName = networkInterface.getDisplayName();
            Log.i("tag", "网络名字" + interfaceName);

            // 如果是有限网卡
            if (interfaceName.equals("eth0")) {
                Enumeration enumIpAddr = networkInterface
                        .getInetAddresses();

                while (enumIpAddr.hasMoreElements()) {
                    // 返回枚举集合中的下一个IP地址信息
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    // 不是回环地址，并且是ipv4的地址
                    if (!inetAddress.isLoopbackAddress()
                            && inetAddress instanceof Inet4Address) {
                        Log.i("tag", inetAddress.getHostAddress() + "   ");

                        return inetAddress.getHostAddress();
                    }
                }
            }
        }

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

}

/**
 * 得到无线网关的IP地址
 *
 * @return
 */
private String getWirelseeIp() {

    try {
        // 获取本地设备的所有网络接口
        Enumeration enumerationNi = NetworkInterface
                .getNetworkInterfaces();
        while (enumerationNi.hasMoreElements()) {
            NetworkInterface networkInterface = enumerationNi.nextElement();
            String interfaceName = networkInterface.getDisplayName();
            Log.i("tag", "网络名字" + interfaceName);

            // 如果是无线网卡
            if (interfaceName.equals("wlan0")) {
                Enumeration enumIpAddr = networkInterface
                        .getInetAddresses();

                while (enumIpAddr.hasMoreElements()) {
                    // 返回枚举集合中的下一个IP地址信息
                    InetAddress inetAddress = enumIpAddr.nextElement();
                    // 不是回环地址，并且是ipv4的地址
                    if (!inetAddress.isLoopbackAddress()
                            && inetAddress instanceof Inet4Address) {
                        Log.i("tag", inetAddress.getHostAddress() + "   ");

                        return inetAddress.getHostAddress();
                    }
                }
            }
        }

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

}

/**
 * 得到无线网关的IP地址
 *
 * @return
 */
private void getAllIp() {

    try {
        // 获取本地设备的所有网络接口
        Enumeration enumerationNi = NetworkInterface
                .getNetworkInterfaces();
        while (enumerationNi.hasMoreElements()) {
            NetworkInterface networkInterface = enumerationNi.nextElement();
            String interfaceName = networkInterface.getDisplayName();
            Log.i("tag", "网络名字" + interfaceName);

            Enumeration enumIpAddr = networkInterface
                    .getInetAddresses();

            while (enumIpAddr.hasMoreElements()) {
                // 返回枚举集合中的下一个IP地址信息
                InetAddress inetAddress = enumIpAddr.nextElement();
                Log.i("tag", inetAddress.getHostAddress() + "哪个类型的   " + inetAddress.getClass().toString());

            }
        }

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

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