I get this error and app get crash while run CoreNFC sample
code in Xcode 9.0 beta 2
dyld: Library not loaded: @rpath/CoreNFC.framework/CoreNFC
Referenced from: /var/containers/Bundle/Application/2837709C-C852-4811-B696-38F2725554D4/iOS-11-by-Examples.app/iOS-11-by-Examples
Reason: image not found
Does anyone knows how to fix this?
I combined some answers together to fix this thanks to @Chinchan Zu's comment
here is how to mark Core NFC as Optional stackoverflow question
First you make import to NFCCore in "Linked Frameworks and Libraries" as optional as in this screenshot
Then inside your code you wrap your code with this #if check. Here is the class I used
#if canImport(CoreNFC)
import Foundation
import CoreNFC
#endif
class NFCManagar: NSObject {
#if canImport(CoreNFC)
var session: NFCNDEFReaderSession?
#endif
var items = [Item]()
var completion: ((_ success: Bool, _ error: Error?)-> Void)?
func beginScanning(items: [Item], completion: @escaping (_ success: Bool, _ error: Error?)-> Void) {
self.completion = completion
self.items.removeAll()
self.items.append(contentsOf: items)
#if canImport(CoreNFC)
session = NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: true)
session?.alertMessage = "Hold your iPhone near check in/out device."
session?.begin()
#endif
}
}
#if canImport(CoreNFC)
extension NFCManagar: NFCNDEFReaderSessionDelegate {
// MARK: - NFCNDEFReaderSessionDelegate
/// - Tag: processingTagData
func readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage]) {
debugPrint("Nfc is detected")
}
/// - Tag: endScanning
func readerSession(_ session: NFCNDEFReaderSession, didInvalidateWithError error: Error) {
// Check the invalidation reason from the returned error.
if let readerError = error as? NFCReaderError {
// Show an alert when the invalidation reason is not because of a success read
// during a single tag read mode, or user canceled a multi-tag read mode session
// from the UI or programmatically using the invalidate method call.
if (readerError.code != .readerSessionInvalidationErrorFirstNDEFTagRead)
&& (readerError.code != .readerSessionInvalidationErrorUserCanceled) {
debugPrint("Nfc didInvalidateWithError \(error)")
}
}
// A new session instance is required to read new tags.
self.session = nil
}
}
#endif
CoreNFC is only available on iPhone 7 and iPhone 7 Plus devices. Make sure you're running your code on one of those.
See the WWDC session and the relevant documentation for more information.
https://developer.apple.com/videos/play/wwdc2017/718/
https://developer.apple.com/documentation/corenfc
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