ҚОРҒАУҒа жіберілді

class ReaderViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate {

@IBOutlet weak var cameraContainerView: UIView!

@IBOutlet weak var cameraContainerHeightConstraint: NSLayoutConstraint!

@IBOutlet weak var startStopButton: UIButton!

@IBOutlet weak var outputTextView: UITextView!

var captureSession: AVCaptureSession!

var previewLayer: AVCaptureVideoPreviewLayer!

var qrCodeBounds:UIView = {

let view = UIView(frame: CGRect(x: 0, y: 0, width: 100, height: 100))

view.layer.borderColor = UIColor.green.cgColor

view.layer.borderWidth = 3

return view

}()

super.viewDidLoad()

self.view.backgroundColor = UIColor.black

self.captureSession = AVCaptureSession()

guard let videoCaptureDevice = AVCaptureDevice.default(for: .video) else { return }

let videoInput: AVCaptureDeviceInput

do {

videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice)

return

self.captureSession.addInput(videoInput)

} else {

self.failed()

return

}

let metadataOutput = AVCaptureMetadataOutput()

self.captureSession.addOutput(metadataOutput)

metadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main)

metadataOutput.metadataObjectTypes = [.qr] // Also have things like Face, body, cats

} else {

self.failed()

return

}

self.previewLayer = AVCaptureVideoPreviewLayer(session: self.captureSession)

self.previewLayer.videoGravity = .resizeAspectFill

self.cameraContainerView.layer.addSublayer(self.previewLayer)
self.qrCodeBounds.alpha = 0

self.cameraContainerView.addSubview(self.qrCodeBounds)

self.captureSession.startRunning()

}

override func viewWillAppear(_ animated: Bool) {

self.captureSession?.startRunning()

}

}

override func viewWillDisappear(_ animated: Bool) {

self.captureSession?.stopRunning()