Here is my code: import VisionKit import Combine import AVFoundation import MessageUI struct ScannerScreen: View { @State private var isShowingScanner = false @State private var scannedText = "" @State private var codeProcessorMessages: [MessageModel] = [] private let mailComposeDelegate = MailDelegate() var body: some View { if DataScannerViewController.isSupported && DataScannerViewController.isAvailable { ZStack(alignment: .top) { DataScannerRepresentable( shouldStartScanning: $isShowingScanner, scannedText: $scannedText, dataToScanFor: [.barcode(symbologies: [.ean8, .ean13, .pdf417])]) VStack { ForEach(codeProcessorMessages, id: \.self) { message in Text(message.text) .padding() .foregroundColor(.white) .background(message.isGlutenFree ? Color.green : Color.red) .cornerRadius(5) } .padding() .background(Color.black.opacity(0.5).cornerRadius(5)) .padding(.bottom, 30) } VStack{ Spacer() HStack { Spacer() Text(scannedText) .padding() .foregroundColor(.black) .background(Color.white .opacity(0.8) .cornerRadius(10)) .opacity(scannedText.isEmpty ? 0 : 1) Button(action: { self.presentMailCompose() }) { Text("Nahlásit změnu") .padding() .foregroundColor(.white) .background(Color.blue) .cornerRadius(10) .opacity(scannedText.isEmpty ? 0 : 1) } } } .padding() } .onChange(of: scannedText) { newText in processCodeWithCodeProcessor(code: newText) } } else if !DataScannerViewController.isSupported { Text("Vypadá to, že zařízení nepodporuje DataScannerViewController") } else { Text("Zdá se, že váš fotoaparát nemusí být dostupný") } } private func processCodeWithCodeProcessor(code: String) { let processor = CodeProcessor() codeProcessorMessages = processor.processCode(givenCode: code).map { message in let isGlutenFree = message.contains("bezlepková") return MessageModel(text: message, isGlutenFree: isGlutenFree) } } } struct ScannerScreen_Previews: PreviewProvider { static var previews: some View { ScannerScreen() } } // Struktura pro reprezentaci zprávy s informací o bezlepkovosti struct MessageModel: Hashable { let text: String let isGlutenFree: Bool }

I mean it worked before and now it doesn't. I think it happened with the simulator update but I don't see a problem with it when the simulator is running on my iPhone. I also wonder if there has been an ios update. The error is that the phone does not see the application in the settings and has seen it before. It's the same on the next iPhone. I'm not paying for a developer license yet. could this be caused by that? If I understand you correctly, you enter the default settings of the application in the settings? Thanks

i have it like this: import SwiftUI import VisionKit import Combine import AVFoundation import MessageUI struct ScannerScreen: View { @State private var isShowingScanner = false @State private var scannedText = "" @State private var codeProcessorMessages: [MessageModel] = [] private let mailComposeDelegate = MailDelegate() var body: some View { if AVCaptureDevice.authorizationStatus(for: .video) == .authorized { ZStack(alignment: .top) { ScannerView(scannedText: $scannedText, codeProcessorMessages: $codeProcessorMessages) .ignoresSafeArea() VStack { ForEach(codeProcessorMessages, id: \.self) { message in Text(message.text) .padding() .foregroundColor(.white) .background(message.isGlutenFree ? Color.green : Color.red) .cornerRadius(5) } .padding() .padding(.bottom, 30) } VStack { Spacer() HStack { Spacer() Text(scannedText) .padding() .foregroundColor(.black) .background(Color.white .opacity(0.8) .cornerRadius(10)) .opacity(scannedText.isEmpty ? 0 : 1) Button(action: { self.presentMailCompose() }) { Text("Nahlásit změnu") .padding() .foregroundColor(.white) .background(Color.blue) .cornerRadius(10) .opacity(scannedText.isEmpty ? 0 : 1) } } } .padding() } .onChange(of: scannedText) { newText in processCodeWithCodeProcessor(code: newText) } } else { VStack { Text("Přístup k fotoaparátu není povolen.") Text("Povolte přístup v nastaveních zařízení.") Button(action: { if let url = URL(string: UIApplication.openSettingsURLString) { UIApplication.shared.open(url) } }) { Text("Otevřít nastavení aplikace") .foregroundColor(.greenField) } } } } private func processCodeWithCodeProcessor(code: String) { let processor = CodeProcessor() codeProcessorMessages = processor.processCode(givenCode: code).map { message in let isGlutenFree = message.contains("bezlepková") return MessageModel(text: message, isGlutenFree: isGlutenFree) } } } struct ScannerScreen_Previews: PreviewProvider { static var previews: some View { ScannerScreen() } } // Structure representing a message with gluten-free information struct MessageModel: Hashable { let text: String let isGlutenFree: Bool } struct ScannerView: UIViewControllerRepresentable { @Binding var scannedText: String @Binding var codeProcessorMessages: [MessageModel] func makeUIViewController(context: Context) -> ScannerViewController { return ScannerViewController(scannedText: $scannedText, codeProcessorMessages: $codeProcessorMessages) } func updateUIViewController(_ uiViewController: ScannerViewController, context: Context) {} } class ScannerViewController: UIViewController, AVCaptureMetadataOutputObjectsDelegate { @Binding var scannedText: String @Binding var codeProcessorMessages: [MessageModel] var captureSession: AVCaptureSession! var previewLayer: AVCaptureVideoPreviewLayer! init(scannedText: Binding<String>, codeProcessorMessages: Binding<[MessageModel]>) { _scannedText = scannedText _codeProcessorMessages = codeProcessorMessages super.init(nibName: nil, bundle: nil) } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func viewDidLoad() { super.viewDidLoad() captureSession = AVCaptureSession() let discoverySession = AVCaptureDevice.DiscoverySession(deviceTypes: [.builtInWideAngleCamera], mediaType: .video, position: .back) guard let videoCaptureDevice = discoverySession.devices.first else { return } let videoInput: AVCaptureDeviceInput do { videoInput = try AVCaptureDeviceInput(device: videoCaptureDevice) } catch let error { print(error) return } if (captureSession.canAddInput(videoInput)) { captureSession.addInput(videoInput) } else { print("Could not add video input") return } let metadataOutput = AVCaptureMetadataOutput() if (captureSession.canAddOutput(metadataOutput)) { captureSession.addOutput(metadataOutput) metadataOutput.setMetadataObjectsDelegate(self, queue: DispatchQueue.main) metadataOutput.metadataObjectTypes = [.ean8, .ean13, .pdf417] } else { print("Could not add metadata output") return } previewLayer = AVCaptureVideoPreviewLayer(session: captureSession) previewLayer.frame = view.layer.bounds previewLayer.videoGravity = .resizeAspectFill view.layer.addSublayer(previewLayer) // Start `AVCaptureSession` on a different thread DispatchQueue.global().async { self.captureSession.startRunning() } } func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) { guard let metadataObject = metadataObjects.first as? AVMetadataMachineReadableCodeObject else { return } guard let stringValue = metadataObject.stringValue else { return } scannedText = stringValue } } extension ScannerScreen { private class MailDelegate: NSObject, MFMailComposeViewControllerDelegate { func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) { controller.dismiss(animated: true) } }