“缺少所需的权利"；用于NFCTagReaderSession

问题描述

我正在研究iOS 13的新CoreNFC功能，并且正在努力使NFCTagReaderSession工作.设置权利并实例化NFCTagReaderSession和委托之后，我尝试通过调用nfcTagReaderSession?.begin()来启动会话.我的会话立即因以下错误而失效:

Error Domain=NFCError Code=2 "Missing required entitlement" UserInfo={NSLocalizedDescription=Missing required entitlement}

我在这里查看了我的权利文件的文档: https://developer.apple. com/documentation/bundleresources/entitlements/com_apple_developer_nfc_readersession_formats

我还在Info.plist中添加了相应的隐私-NFC扫描使用说明".

有人能使用这个吗?这仅仅是Xcode 11或iOS 13的问题吗?

这是我的ViewController中的代码:

import UIKit
import CoreNFC

class ViewController: UIViewController {

    var nfcTagReaderSession: NFCTagReaderSession?

    override func viewDidLoad() {
        super.viewDidLoad()

        nfcTagReaderSession = NFCTagReaderSession(pollingOption: [.iso14443, .iso15693, .iso18092], delegate: self)
        nfcTagReaderSession?.begin()
        print("isReady: \(nfcTagReaderSession?.isReady)")
    }
}

extension ViewController: NFCTagReaderSessionDelegate {
    func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
        print("Tag reader did become active")
    }

    func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: Error) {
        print("\(error)")
    }

    func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
        print("\(tags)")
    }
}

这是我的权利文件:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>com.apple.developer.nfc.readersession.formats</key>
    <array>
        <string>TAG</string>
        <string>NDEF</string>
    </array>
</dict>
</plist>

解决方案

我遇到了同样的问题，但是在功能中删除并添加了 Near Field Communication Tag Reading (近场通信标签读取)后，问题消失了.

我的权利文件有一些不同:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>com.apple.developer.associated-domains</key>
    <array>
        <string>applinks:example.com</string>
    </array>
    <key>com.apple.developer.nfc.readersession.formats</key>
    <array>
        <string>NDEF</string>
        <string>TAG</string>
    </array>
</dict>
</plist>

但是我不认为是这样.

此外，您可以尝试修改Apple示例以适合您的需求: https://developer.apple.com/documentation/corenfc/building_an_nfc_tag-reader_app

或者只是从轮询选项中删除 .iso18092 即可.我认为该标准需要特定的权利.

I'm diving into iOS 13's new CoreNFC capabilities, and I'm struggling to get NFCTagReaderSession working. After setting up my entitlements and instantiating an NFCTagReaderSession and delegate I attempt to start the session by calling nfcTagReaderSession?.begin(). My session immediately gets invalidated with this error:

Error Domain=NFCError Code=2 "Missing required entitlement" UserInfo={NSLocalizedDescription=Missing required entitlement}

I followed the documentation here for my entitlements file: https://developer.apple.com/documentation/bundleresources/entitlements/com_apple_developer_nfc_readersession_formats

I have also added the appropriate "Privacy - NFC Scan Usage Description" in my Info.plist.

Has anyone gotten this to work yet? Is this just a problem with Xcode 11 or iOS 13?

Here is the code in my ViewController:

import UIKit
import CoreNFC

class ViewController: UIViewController {

    var nfcTagReaderSession: NFCTagReaderSession?

    override func viewDidLoad() {
        super.viewDidLoad()

        nfcTagReaderSession = NFCTagReaderSession(pollingOption: [.iso14443, .iso15693, .iso18092], delegate: self)
        nfcTagReaderSession?.begin()
        print("isReady: \(nfcTagReaderSession?.isReady)")
    }
}

extension ViewController: NFCTagReaderSessionDelegate {
    func tagReaderSessionDidBecomeActive(_ session: NFCTagReaderSession) {
        print("Tag reader did become active")
    }

    func tagReaderSession(_ session: NFCTagReaderSession, didInvalidateWithError error: Error) {
        print("\(error)")
    }

    func tagReaderSession(_ session: NFCTagReaderSession, didDetect tags: [NFCTag]) {
        print("\(tags)")
    }
}

Here is my entitlements file:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>com.apple.developer.nfc.readersession.formats</key>
    <array>
        <string>TAG</string>
        <string>NDEF</string>
    </array>
</dict>
</plist>

解决方案

I had the same problem, but it is gone after removing and adding Near Field Communication Tag Reading in Capabilities.

My entitlements file have a little differ:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>com.apple.developer.associated-domains</key>
    <array>
        <string>applinks:example.com</string>
    </array>
    <key>com.apple.developer.nfc.readersession.formats</key>
    <array>
        <string>NDEF</string>
        <string>TAG</string>
    </array>
</dict>
</plist>

But I don't think this is it.

Also, you can try to modify Apple example to fit your needs: https://developer.apple.com/documentation/corenfc/building_an_nfc_tag-reader_app

Or just remove .iso18092 from polling options and it will work. I think this standard require specific entitlement.

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