/**    * 通過WiFiManager獲取mac地址    * @param context    * @return    */   private static String tryGetWifiMac(Context context) {     WifiManager wm = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);     WifiInfo wi = wm.getConnectionInfo();     if (wi == null || wi.getMacAddress() == null) {       return null;     }     if ("02:00:00:00:00:00".equals(wi.getMacAddress().trim())) {       return null;     } else {       return wi.getMacAddress().trim();     }   } 

/**    * 根據IP地址獲取MAC地址    *    * @return    */   private static String getLocalMacAddressFromIp() {     String strMacAddr = null;     try {       //獲得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) {      }      return strMacAddr;   }  /**    * 獲取移動設備本地IP    *    * @return    */   private static InetAddress getLocalInetAddress() {     InetAddress ip = null;     try {       //列舉       Enumeration<NetworkInterface> en_netInterface = NetworkInterface.getNetworkInterfaces();       while (en_netInterface.hasMoreElements()) {//是否還有元素         NetworkInterface ni = (NetworkInterface) en_netInterface.nextElement();//得到下一個元素         Enumeration<InetAddress> en_ip = ni.getInetAddresses();//得到一個ip地址的列舉         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;   } 

/**  * 通過網絡接口取  * @return  */ private static String getNewMac() {   try {     List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());     for (NetworkInterface nif : all) {       if (!nif.getName().equalsIgnoreCase("wlan0")) continue;        byte[] macBytes = nif.getHardwareAddress();       if (macBytes == null) {         return null;       }        StringBuilder res1 = new StringBuilder();       for (byte b : macBytes) {         res1.append(String.format("%02X:", b));       }        if (res1.length() > 0) {         res1.deleteCharAt(res1.length() - 1);       }       return res1.toString();     }   } catch (Exception ex) {     ex.printStackTrace();   }   return null; }