如何使用NFCTagReaderSession的示例

import CoreNFC

class NFCReaderViewController: UIViewController, NFCTagReaderSessionDelegate {
    
    var nfcTagReaderSession: NFCTagReaderSession?
    
    func startNFCReading() {
        if NFCTagReaderSession.readingAvailable {
            nfcTagReaderSession = NFCTagReaderSession(pollingOption: .iso15693, delegate: self)
            nfcTagReaderSession?.alertMessage = "Hold your iPhone near the NFC tag."
            nfcTagReaderSession?.begin()
        } else {
            // NFC is not supported on this device
        }
    }
    
    // NFCTagReaderSessionDelegate methods
    
    func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
        // The NFC reader session became active
    }
    
    func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: Error) {
        // The NFC reader session was invalidated with an error
    }
    
    func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
        // Handle the detected NFC tags here
        if let firstTag = tags.first {
            session.connect(to: firstTag) { (error: Error?) in
                if let error = error {
                    // Failed to connect to the tag
                    session.invalidate(errorMessage: "Failed to connect to the NFC tag.")
                } else {
                    // Connected to the tag
                    self.readTagData(from: firstTag)
                }
            }
        }
    }
    
    func readTagData(from tag: NFCTag) {
        // Read the NFC tag data here
        // ...
        nfcTagReaderSession?.invalidate()
    }
}