Structure

NFCReaderError

An error type that indicates problems with reader sessions or tags.

Declaration

struct NFCReaderError

Topics

Error Information

var errorCode: Int

The error code.

var errorUserInfo: [String : Any]

Additional details about an error.

var localizedDescription: String

A user-facing, localized string that describes the error.

Session Errors

static var readerSessionInvalidationErrorFirstNDEFTagRead: NFCReaderError.Code

The first NDEF tag read by this session is invalid.

static var readerSessionInvalidationErrorSessionTerminatedUnexpectedly: NFCReaderError.Code

The reader session terminated unexpectedly.

static var readerSessionInvalidationErrorSessionTimeout: NFCReaderError.Code

The reader session timed out.

static var readerSessionInvalidationErrorSystemIsBusy: NFCReaderError.Code

The reader session failed because the system is busy.

static var readerSessionInvalidationErrorUserCanceled: NFCReaderError.Code

The user canceled the reader session.

NDEF Tag Errors

static var ndefReaderSessionErrorTagNotWritable: NFCReaderError.Code

The NDEF tag isn’t writable.

static var ndefReaderSessionErrorTagSizeTooSmall: NFCReaderError.Code

The NDEF tag memory size is too small to store the data.

static var ndefReaderSessionErrorTagUpdateFailure: NFCReaderError.Code

The reader session failed to update the NDEF tag.

static var ndefReaderSessionErrorZeroLengthMessage: NFCReaderError.Code

The NDEF tag doesn’t contain an NDEF message.

Transceive Errors

static var readerTransceiveErrorRetryExceeded: NFCReaderError.Code

Too many retries have occurred.

static var readerTransceiveErrorTagConnectionLost: NFCReaderError.Code

The reader lost the connection to the tag.

static var readerTransceiveErrorTagNotConnected: NFCReaderError.Code

The tag isn’t in the connected state.

static var readerTransceiveErrorTagResponseError: NFCReaderError.Code

The tag has responded with an error.

static var readerTransceiveErrorSessionInvalidated: NFCReaderError.Code

The reader session is invalid.

Tag Command Configuration Errors

static var tagCommandConfigurationErrorInvalidParameters: NFCReaderError.Code

The tag has been configured with invalid parameters.

Other Errors

static var readerErrorUnsupportedFeature: NFCReaderError.Code

The reader session does not support this feature.

static var readerErrorInvalidParameter: NFCReaderError.Code

An input parameter is invalid.

static var readerErrorInvalidParameterLength: NFCReaderError.Code

The length of an input parameter is invalid.

static var readerErrorParameterOutOfBound: NFCReaderError.Code

A parameter value is outside of the acceptable boundary.

static var readerErrorSecurityViolation: NFCReaderError.Code

A security violation associated with the reader session has occurred.

Error Domain

static var errorDomain: String

The error domain for this error.

let NFCErrorDomain: String

The domain for errors associated with Core NFC APIs.

Operator Functions

static func != (NFCReaderError, NFCReaderError) -> Bool

Returns a Boolean value indicating whether two values are not equal.