Qt 中使用Java代码获取安卓设备的MAC地址（安卓9.0）

public String GetDeviceMAC() {

       String strMacAddr = null;

       try {

           // 获得IpD地址

           InetAddress ip = getLocalInetAddress();

           byte[] b = NetworkInterface.getByInetAddress(ip)

                   .getHardwareAddress();

           StringBuffer buffer = new StringBuffer();

           for (int i = 0; i < b.length; i++) {

               if (i != 0) {

                   buffer.append(':');

               }

               String str = Integer.toHexString(b[i] & 0xFF);

               buffer.append(str.length() == 1 ? 0 + str : str);

           }

           strMacAddr = buffer.toString().toUpperCase();

       } catch (Exception e) {

       }

       Log.d("MAC2" , "getCPUSerial the result is = " );

       return strMacAddr;

   }

private  InetAddress getLocalInetAddress() {

       InetAddress ip = null;

       try {

           // 列举

           Enumeration<NetworkInterface> en_netInterface = NetworkInterface

                   .getNetworkInterfaces();

           while (en_netInterface.hasMoreElements()) {// 是否还有元素

               NetworkInterface ni = (NetworkInterface) en_netInterface

                       .nextElement();// 得到下一个元素

               Enumeration<InetAddress> en_ip = ni.getInetAddresses();// 得到一个ip地址的列举

               while (en_ip.hasMoreElements()) {

                   ip = en_ip.nextElement();

                   if (!ip.isLoopbackAddress()

                           && ip.getHostAddress().indexOf(":") == -1)

                       break;

                   else

                       ip = null;

               }

               if (ip != null) {

                   break;

               }

           }

       } catch (SocketException e) {

           e.printStackTrace();

       }

       return 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) {

            ex.printStackTrace();

        }

        return null;

    }