依赖

compile files(‘libs/httpclient-4.5.2.jar‘)

源码
public static String getLocalIpAddress()
{
    try
    {
        for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();)
        {
            NetworkInterface intf = en.nextElement();
            for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();)
            {
                InetAddress inetAddress = enumIpAddr.nextElement();
                if (!inetAddress.isLoopbackAddress()&& InetAddressUtils.isIPv4Address(inetAddress.getHostAddress()))
                {
                    return inetAddress.getHostAddress().toString();
                }
            }
        }
    }
    catch (SocketException ex)
    {
        Log.e("WifiPreferenceIpAddress", ex.toString());
    }
    return null;
}

Android-获取IP