ios - CoreNFC 调试不起作用

Question

CoreNFC 如何在 xcode-9 上以编程方式工作

func readerSession(_ session: NFCNDEFReaderSession, didInvalidateWithError error: Error) {
    //What I need to do here
}

func readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage]) {
    //What I need to do here
}

override func viewDidLoad() {
    super.viewDidLoad()

    let sessionReader = NFCNDEFReaderSession.init(delegate: self, queue: nil, invalidateAfterFirstRead: true)
    let nfcSession = NFCReaderSession.self

    let nfcTag = NFCTagCommandConfiguration.init()
    let tagType = NFCTagType(rawValue: 0)

    sessionReader.begin()

}

我想知道读取一些 NFC 标签需要做什么。

Answer 1

有四个步骤可以让它工作：

1. 在 Apple 开发者门户中将 NFC 标签权限添加到您的 App Identifier

2. 将代码签名权利文件添加到您的项目和构建设置中，并添加以下原始键和值：

3. 将使用说明添加到您的 Info.plist：

4. 实现委托并将其传递给NFCNDEFReaderSessioninit，如下所示：

   import UIKit
   import CoreNFC
   
   @UIApplicationMain
   class AppDelegate: UIResponder, UIApplicationDelegate, NFCNDEFReaderSessionDelegate {
   
       var window: UIWindow?
       var session: NFCNDEFReaderSession?
   
       func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
           session = NFCNDEFReaderSession(delegate: self, queue: nil, invalidateAfterFirstRead: false)
           self.session?.begin()
           return true
       }
   
       func readerSession(_ session: NFCNDEFReaderSession, didInvalidateWithError error: Error) {
           print(error)
       }
   
       func readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage]) {
           print(messages)
       }
   
   }