Я пытаюсь создать QR Reader.Однако, когда я открываю окно со сканером, оно вылетает с ошибкой «Завершение приложения из-за необработанного исключения« NSInvalidArgumentException », причина:« *** - [AVCaptureMetadataOutput setMetadataObjectTypes:] Обнаружен неподдерживаемый тип - используйте -availableMetadataObjectTypes »1002 * Это мой код:
import UIKit
import AVFoundation
import Alamofire
import SwiftyJSON
class CameraTwoViewController: UIViewController,
AVCaptureMetadataOutputObjectsDelegate {
@IBOutlet weak var square: UIImageView!
var video = AVCaptureVideoPreviewLayer()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
//Creating session
let session = AVCaptureSession()
//Define capture devcie
let captureDevice = AVCaptureDevice.default(for: .video)
do
{
let input = try AVCaptureDeviceInput(device: captureDevice!)
}
catch
{
print ("ERROR")
}
let output = AVCaptureMetadataOutput()
session.addOutput(output)
output.setMetadataObjectsDelegate(self, queue: DispatchQueue.main)
output.metadataObjectTypes = [AVMetadataObject.ObjectType.qr]
//output.metadataObjectTypes = [AVMetadataObject.availableMetadataObjectTypes.qr]
video = AVCaptureVideoPreviewLayer(session: session)
video.frame = view.layer.bounds
view.layer.addSublayer(video)
self.view.bringSubview(toFront: square)
session.startRunning()
}
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
if metadataObjects != nil && metadataObjects.count != 0 {
if let object = metadataObjects[0] as? AVMetadataMachineReadableCodeObject {
if object.type == AVMetadataObject.ObjectType.qr {
let alert = UIAlertController(title: "Your code is:", message: object.stringValue, preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Retake", style: .default, handler: nil))
alert.addAction(UIAlertAction(title: "Copy", style: .default, handler: { (nil) in
UIPasteboard.general.string = object.stringValue
}))
present(alert, animated: true, completion: nil)
}
}
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
Заранее спасибо!