Fetching APDU for generating TOTP code

MainActivity.java

protected void communicateWithCard(IsoCard isoCard) {
  try {
    isoCard.connect();
    Apdu.transceiveAndRequireOk(Apdu.select(OTP_AID), isoCard);
    setMainMessage("Select OK");
    long timeStamp = getTimeStamp();
    byte[] totpCodeApdu = Otp.totpCodeApdu(TOTP_CODE_NAME, timeStamp);
    isoCard.close();
  } catch (IOException e) {
    e.printStackTrace();
  }
}