获取本机ip

 private 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())
                    {
                        return inetAddress.getHostAddress().toString();
                    }
                }
            }
        }
        catch (SocketException ex)
        {
            Log.e("getLocalIpAddress,",
                ex.toString());
        }
        return null;
    }