What's new in Core NFC

3:24 - sendCommand

detectedTag.sendCommand(apdu: apdu) { (result: Result<NFCISO7816ResponseAPDU, Error>) in
   switch result {
   case .success(let responseAPDU):
      /// Handle NFCISO7816ResponseAPDU object.
   case .failure(let error):
      /// Handle Error object.
   }
}

4:06 - sendMiFareCommand

// You need to zero-pad the data to fill the block size
if blockData.count < blockSize {
  blockData += Data(count: blockSize - blockData.count)
}

let writeCommand = Data([writeBlockCommand, offset]) + blockData
tag.sendMiFareCommand(commandPacket: writeCommand) { (response: Result<Data, Error>) in
  switch (response) {
  case .success(let responseData):
    if responseData[0] != successCode {
      self.readerSession?.invalidate(errorMessage: "Write tag error. Please try again.")
      return
    }
    
    let newSize = data.count - blockSize
    if newSize > 0 {
      self.write(data.suffix(newSize), to: tag, offset: (offset + 1))
    } else {
      self.readerSession?.invalidate()
    }
  case .failure(let error):
    let message = "Write tag error: \(error.localizedDescription). Please try again."
    self.readerSession?.invalidate(errorMessage: message)
  }
}