Hi together, I am developing a document viewer for a specific API. I download the relevant files to a custom directory and open them using a QLPreviewController in SwiftUI. I built this with a UIViewControllerRepresentable.
Everything is working fine except the saving of modified files using the pencil markup in the preview.
Here is the error: https://pastebin.com/TRnfduE5
This is how my controller looks like:
struct PreviewController: UIViewControllerRepresentable { let url: URL @Binding var isPresented: Bool func makeUIViewController(context: Context) -> UINavigationController { let controller = QLPreviewController() controller.dataSource = context.coordinator controller.navigationItem.leftBarButtonItem = UIBarButtonItem( barButtonSystemItem: .done, target: context.coordinator, action: #selector(context.coordinator.dismiss) ) let navigationController = UINavigationController(rootViewController: controller) return navigationController } func makeCoordinator() -> Coordinator { return Coordinator(parent: self) } func updateUIViewController(_ uiViewController: UINavigationController, context: Context) { let controller = QLPreviewController() controller.dataSource = context.coordinator } class Coordinator: QLPreviewControllerDataSource { let parent: PreviewController init(parent: PreviewController) { self.parent = parent } @objc func dismiss() { parent.isPresented = false } func numberOfPreviewItems( in controller: QLPreviewController ) -> Int { return 1 } func previewController( _ controller: QLPreviewController, previewItemAt index: Int ) -> QLPreviewItem { return parent.url as QLPreviewItem } func previewController(_ controller: QLPreviewController, editingModeFor previewItem: QLPreviewItem ) -> QLPreviewItemEditingMode { .createCopy } func previewController(_: QLPreviewController, didUpdateContentsOf: QLPreviewItem){ print("Updated.") } func previewController(_: QLPreviewController, didSaveEditedCopyOf: QLPreviewItem, at: URL) { print("Saved: " + at.path) } } }
Does anyone know, what the problem is here?
And I made another experience: as you see there, I'm currently only logging the output / actions - and there isn't anything being logged, if I made just one edit. It only throws the error above after the 1st edit - so if I edit sth again and tap done or the pencil icon again... Is this ok so?
Thanks for any help or advise!