static final char[] hexArray = "0123456789ABCDEF".toCharArray();
    private static String bytesToHex(byte[] bytes) {
        char[] hexChars = new char[bytes.length * 2];
        for ( int j = 0; j < bytes.length; j++ ) {
            int v = bytes[j] & 0xFF;
            hexChars[j * 2] = hexArray[v >>> 4];
            hexChars[j * 2 + 1] = hexArray[v & 0x0F];
        }
        return new String(hexChars);
    }

    private String uuidWithRecord(byte[] scanRecord) {
        int startByte = 2;
        boolean patternFound = false;
        while (startByte <= 5) {
            if (    ((int) scanRecord[startByte + 2] & 0xff) == 0x02 && //Identifies an iBeacon
                    ((int) scanRecord[startByte + 3] & 0xff) == 0x15) { //Identifies correct data length
                patternFound = true;
                break;
            }
            startByte++;
        }

        if (patternFound) {
            //Convert to hex String
            byte[] uuidBytes = new byte[16];
            System.arraycopy(scanRecord, startByte+4, uuidBytes, 0, 16);
            String hexString = bytesToHex(uuidBytes);

            //Here is your UUID
            String uuid =  hexString.substring(0,8) + "-" +
                    hexString.substring(8,12) + "-" +
                    hexString.substring(12,16) + "-" +
                    hexString.substring(16,20) + "-" +
                    hexString.substring(20,32);

            //Here is your Major value
            int major = (scanRecord[startByte+20] & 0xff) * 0x100 + (scanRecord[startByte+21] & 0xff);

            //Here is your Minor value
            int minor = (scanRecord[startByte+22] & 0xff) * 0x100 + (scanRecord[startByte+23] & 0xff);
            return uuid;
        }
        return null;
    }