android get the serialNumber and Mac address of the device

1. Get SerialNumber

private static String getSerialNumber() {
        String serial = null;
        try {
            Class<?> c = Class.forName("android.os.SystemProperties");
            Method get = c.getMethod("get", String.class);
            serial = (String) get.invoke(c, "ro.serialnocustom");
        } catch (Exception e) {
            e.printStackTrace ();
        }
        return serial;
    }

2. Get a mac

private static final String marshmallowMacAddress = "02:00:00:00:00:00";
private static final String fileAddressMac = "/sys/class/net/wlan0/address";
public static String getAdresseMAC(Context context) {

    WifiManager wifiMan = (WifiManager)context.getSystemService(Context.WIFI_SERVICE) ;
    WifiInfo wifiInf = wifiMan.getConnectionInfo();
    if(wifiInf !=null && marshmallowMacAddress.equals(wifiInf.getMacAddress())){
        String result = null;
        try {
            result= getAdressMacByInterface();
            if (result != null){
                return result;
            } else {
                result = getAddressMacByFile(wifiMan);
                return result;
            }
        } catch (IOException e) {
            Log. e ( "MobileAccess" , "Error reading MAC Address property" ) ;
        } catch (Exception e) {
            Log. e ( "MobileAccess" , "Error reading MAC Address property" ) ;
        }
    } else{
        if (wifiInf != null && wifiInf.getMacAddress() != null) {
            return wifiInf.getMacAddress();
        } else {
            return "";
        }
    }
    return marshmallowMacAddress;
}

/**
 * Get mac
 through interface * @return
 */
 private static String getAdressMacByInterface (){
     try { 
        List<NetworkInterface> all = Collections.list(NetworkInterface.getNetworkInterfaces());
        for (NetworkInterface nif : all) {
            if (nif.getName().equalsIgnoreCase("wlan0")) {
                byte[] macBytes = nif.getHardwareAddress();
                if (macBytes == null) {
                    return "";
                }

                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 e) {
        Log. e ( "MobileAccess" , "Error reading MAC Address property" ) ;
    }
     return null;
}

/**
 * 通过文件获取mac
 * @param wifiMan
* @return
* @throws Exception
 */
private static String getAddressMacByFile(WifiManager wifiMan) throws Exception {  
    String ret;
    int wifiState = wifiMan.getWifiState();
wifiMan.setWifiEnabled(true);
File fl = new File(fileAddressMac);
FileInputStream fin = new FileInputStream(fl);
ret = crunchifyGetStringFromStream(fin);
fin.close();
    boolean enabled = WifiManager.WIFI_STATE_ENABLED == wifiState;
wifiMan.setWifiEnabled(enabled);
    return ret;
}
                    
    

private static String crunchifyGetStringFromStream(InputStream crunchifyStream) throws IOException {
    if (crunchifyStream != null) {
        Writer crunchifyWriter = new StringWriter();
        char[] crunchifyBuffer = new char[2048];
        try {

            Reader crunchifyReader = new BufferedReader(new InputStreamReader(crunchifyStream, "UTF-8"));
            int counter;
            while ((counter = crunchifyReader.read(crunchifyBuffer)) != -1) {
                crunchifyWriter.write(crunchifyBuffer, 0, counter);
            }
        } finally {
            crunchifyStream.close();
        }
        return crunchifyWriter.toString();
    } else {
        return "No Contents";
    }
}