Ios -识别QRcode响应类型

Question

我在我的应用程序中使用了二维码，它也以AVMetadataMachineReadableCodeObject的形式给了我响应。这是我的代理，它处理响应。

 func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [Any]!, from connection: AVCaptureConnection!) {



    if strFound == ""
    {

    // Check if the metadataObjects array is not nil and it contains at least one object.
    if metadataObjects == nil || metadataObjects.count == 0 {
        qrCodeFrameVieww?.frame = CGRect.zero
        messageLabel.text = "No QR/barcode is detected"
        return
    }

    // Get the metadata object.
    let metadataObj = metadataObjects[0] as! AVMetadataMachineReadableCodeObject

    if supportedCodeTypes.contains(metadataObj.type) {
        // If the found metadata is equal to the QR code metadata then update the status label's text and set the bounds
        let barCodeObject = videoPreviewLayer?.transformedMetadataObject(for: metadataObj)
        //qrCodeFrameVieww?.frame = barCodeObject!.bounds

        if defaults.value(forKey: "beep") as! Bool != false
        {
            playSound()

        }
        if defaults.value(forKey: "vibrate") as! Bool != false
        {
            AudioServicesPlayAlertSound(SystemSoundID(kSystemSoundID_Vibrate))

            AudioServicesPlaySystemSoundWithCompletion(SystemSoundID(kSystemSoundID_Vibrate), nil)

        }


        print("type is",metadataObj.type)

        print("metaDataObj",metadataObj)

         foundCode(code: metadataObj.stringValue as NSString)

        if metadataObj.stringValue != nil {


            let stUrl = metadataObj.stringValue as String
            print("The Url Is \(stUrl)")

            if defaults.value(forKey: "copyToClipboard") as! Bool == true
            {
                UIPasteboard.general.string = stUrl



            }

}

我的问题是，由于二维码可以扫描电子名片、电话号码、电子邮件、地理位置和日历事件etc.How，我是否可以知道响应字符串中有哪些数据，例如它是与电子名片相关的，还是url或日历事件？？

Answer 1

guard let metadataObject = metadataObjects.first as? AVMetadataMachineReadableCodeObject else {
  return
}
guard let codeObject = videoPreviewLayer?.transformedMetadataObject(for: metadataObject) else {
  return
}
switch codeObject.type {
  case .AVMetadataObjectTypeQRCode:
    //...
  default:
    break
}