iOS11 NFC 读卡Demo

注意，NFC开发现需要付费开发者才能使用

0x01 准备工作

• 创建一个App ID,并勾选NFC Tag Reading
  

• 创建应用，并使用刚才创建的App ID

• 在plist文件中加入以下几行

<key>NFCReaderUsageDescription</key>
<string>NFC Tag!</string>

• 生成CardCollections.entitlements
  在Capabilities中打开Push Notifications然后关闭会生成一份工程名字.entitlements，内容填写如下：

<?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>NDEF</string>
    </array>
</dict>
</plist>

然后前往Build Settings中设置Code Signing Entitlements的路径，务必保证路径正确

0x02 编写代码

import UIKit
import CoreNFC


class ViewController: UIViewController {
    
    
    var session: NFCNDEFReaderSession!
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        
        session = NFCNDEFReaderSession(delegate: self,
                                       queue: DispatchQueue(label: "queueName", attributes: .concurrent), invalidateAfterFirstRead: false)
        session.begin()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

}

extension ViewController: NFCNDEFReaderSessionDelegate {
    func readerSession(_ session: NFCNDEFReaderSession, didDetectNDEFs messages: [NFCNDEFMessage]) {
        for message in messages {
            for record in message.records {
                print(record.payload)
            }
        }
    }
    
    func readerSession(_ session: NFCNDEFReaderSession, didInvalidateWithError error: Error) {
        print("read error:\(error)")
    }
}