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() && inetAddress instanceof Inet4Address) {  //IPv4地址

                        return inetAddress.getHostAddress().toString();

                    }

                }

            }

        } catch (SocketException ex) {

            Log.d("IP", ex.toString());

        }