QR scanner in Swift 5 - swift

Question

I built a QR scanner in Swift 5. It will acknowledge the QR Code and scan it, however it only pulls up the url that is embedded in the QR code. Does anyone have any advice on how to make it so that I can tap the link and open it in a browser?
This is the code I have for the scanner:
import UIKit
import AVFoundation
extension QRScannerController: AVCaptureMetadataOutputObjectsDelegate {
}
class QRScannerController: UIViewController {
var captureSession = AVCaptureSession()
var videoPreviewLayer: AVCaptureVideoPreviewLayer?
var qrcodeFrameView: UIView?
#IBOutlet var messageLabel: UILabel!
#IBOutlet var topBar: UIView!
func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) {
// Check if the metadataObjects array is not nil and it cotains at least one object
if metadataObjects.count == 0 {
qrcodeFrameView?.frame = CGRect.zero
messageLabel.text = "No QR Code is detected"
return
}
//Get the metadata object
let metadataObj = metadataObjects[0] as! AVMetadataMachineReadableCodeObject
if metadataObj.type == AVMetadataObject.ObjectType.qr {
// 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)
qrcodeFrameView?.frame = barCodeObject!.bounds
if metadataObj.stringValue != nil {
messageLabel.text = metadataObj.stringValue
}
}
}
override func viewDidLoad() {
super.viewDidLoad()
// get back camera for capture
guard let captureDevice = AVCaptureDevice.default(.builtInWideAngleCamera, for: .video, position: .back) else {
print("Failed to get camera device")
return
}
do {
// Get an instance of the AVCaptureDeviceInput class using the previous device object
let input = try AVCaptureDeviceInput(device: captureDevice)
//Set the input device on the capture session
captureSession.addInput(input)
//Initialize a AVCaptureMetadataOutput object and set it as the output device to the capture session
let captureMetadataOutput = AVCaptureMetadataOutput()
captureSession.addOutput(captureMetadataOutput)
//Set delegate and use the default dispatch queue to execute the call back
captureMetadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main)
captureMetadataOutput.metadataObjectTypes = [AVMetadataObject.ObjectType.qr]
// Initialize the video preview layer and add it as a sublayer to the viewPreview view's layer
videoPreviewLayer = AVCaptureVideoPreviewLayer(session: captureSession)
videoPreviewLayer?.videoGravity = AVLayerVideoGravity.resizeAspectFill
videoPreviewLayer?.frame = view.layer.bounds
view.layer.addSublayer(videoPreviewLayer!)
//Start video capture
captureSession.startRunning()
// Move the message label and top bar to the front
view.bringSubviewToFront(messageLabel)
view.bringSubviewToFront(topBar)
// Initialize QR Code Frame to highlight the QR Code
qrcodeFrameView = UIView()
if let qrcodeFrameView = qrcodeFrameView {
qrcodeFrameView.layer.borderColor = UIColor.yellow.cgColor
qrcodeFrameView.layer.borderWidth = 2
view.addSubview(qrcodeFrameView)
view.bringSubviewToFront(qrcodeFrameView)
}
} catch {
print(error)
return
}
}
}