NFCTagReaderSessionDelegate

Tag reader session delegate.

public protocol NFCTagReaderSessionDelegate: AnyObject 

Inheritance

AnyObject

Requirements

tagReaderSessionDidBecomeActive(_:​)

Tells the delegate that the reader session is active.

func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession)

The reader session calls this method after the device begins scanning for new tags.

Parameters

• session: The active reader session. Only one session can be active at a time.

tagReaderSession(_:​didDetect:​)

Tells the delegate that the session detected NFC tags.

func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag])

The polling options specified when creating an NFCTagReaderSession object determine the types of tags that the session can detect.

Parameters

• session: The session that detected the tags.
• tags: An array of NFC tags detected by the session.

tagReaderSession(_:​didInvalidateWithError:​)

Tells the delegate the reason for invalidating a reader session.

func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: Error)

Parameters

• session: The session that has become invalid. Your app should discard any references it has to this session.
• error: The error indicating the reason for invalidation of the session.