Hello together, since Xcode Version > 15 the following error handling causes following error "Pattern of type 'DecodingError' cannot match 'Never' func getSupportedCountries() async { // fetch all documents from collection "seasons" from firestore let queryCountries = try? await db.collection("countries").getDocuments() if queryCountries != nil { self.countries = (queryCountries!.documents.compactMap({ (queryDocumentSnapshot) -> Country? in let result = Result { try? queryDocumentSnapshot.data(as: Country.self) } switch result { case .success(let country): if let country = country { // A country value was successfully initialized from the DocumentSnapshot self.errorMessage = nil return country } else { // A nil value was successfully initialized from the DocumentSnapshot, // or the DocumentSnapshot was nil self.errorMessage = "Document doesn't exist." return nil } case .failure(let error): // A Country value could not be initialized from the DocumentSnapshot switch error { case DecodingError.typeMismatch(_, let context): self.errorMessage = "\(error.localizedDescription): \(context.debugDescription)" case DecodingError.valueNotFound(_, let context): self.errorMessage = "\(error.localizedDescription): \(context.debugDescription)" case DecodingError.keyNotFound(_, let context): self.errorMessage = "\(error.localizedDescription): \(context.debugDescription)" case DecodingError.dataCorrupted(let key): self.errorMessage = "\(error.localizedDescription): \(key)" default: self.errorMessage = "Error decoding document: \(error.localizedDescription)" } return nil } })) } else { self.errorMessage = "No documents in 'countries' collection" return } } the interesting part of the code where XCODE shows an error is from "switch error" downwards. Does anyone of you have an idea what's wrong? Ay help appreciated ! Thx, Peter

Hello together, i want to us some classes to manage informations, which get fetched from a firestore database. My idea was, that I will have different classes for the different state of informations. The information which will be common for the different states should have the same properties. Therefore it made sense for me to have a super class which stores the main informations and derive a subclass with extra properties to store the more informations. My question is, how to define the initializer method properly, so that I can store these data informations fetched from firestore at once without any loss. Superclass (I reduced it to a minimum, just to show my principal problem): class GameInfo: Codable, Identifiable { @DocumentID var id: String? // -> UUID of firestore document var league: String var homeTeam: String var guestTeam: String enum CodingKeys: String, CodingKey { case league case homeTeam case guestTeam } init(league: String, homeTeam: String, guestTeam: String) { self.league = league self.homeTeam = homeTeam self.guestTeam = guestTeam } } the subclass should contain the GameInfo Properties and some others ... class Game: GameInfo { var startTime: Date? enum CodingKeys: String, CodingKey { case startTime } init(league: String, homeTeam: String, guestTeam: String, startTime: Date) { self.startTime = startTime super.init(league: league, homeTeam: homeTeam, guestTeam: guestTeam) } required init(from decoder: any Decoder) throws { let values = try decoder.container(keyedBy: CodingKeys.self) self.startTime = try values.decodeIfPresent(Date.self, forKey: .startTime) super.init(league: "", homeTeam: "",, guestTeam: "") } With the required init-method, informations get decoded and stored. (the data from firestore contain the league, homeTeam, guestTeam and startTime informations). The super.init() method as defined results in empty strings. But what I want is, that the league, homeTeam and guestTeam values will also be decoded from the firestore informations. But I don't know how. If I use the code super.init(league: league, homeTeam: homeTeam, guestTeam: guestTeam) within the required init() than I get the compiler error message 'self' used in property access 'league' before 'super.init' call What is wrong in my thinking ? Any help appreciated. Thanks and best regards Peter

Hello together, does anyone know how I can scale a view to a given document size (e.g. A4: 210/297 mm) without scaling the view itself? With enclosed code I can create the pdf-document, but the paperize is not the intended size. It is too big. Variation this line of code var mediaBox = CGRect(origin: .zero, size: CGSize(width: size.width, height: size.height)) into var mediaBox = CGRect(origin: .zero, size: CGSize(width: 595, height: 842) does not scale the view (it just shows a part of it at the correct papersize). So what do I have to do to scale the rendered view to the proper size? Enclosed a very simple code snipped to see th strange behavior. Thx, best regards Peter import SwiftUI struct ContentView: View { var body: some View { ZStack { Rectangle() .frame(width: 2100, height: 2910) .foregroundColor(.red) Rectangle() .frame(width: 2100/2, height: 2910/3) .foregroundColor(.blue) Text("Hello, world!") } .padding() .onAppear(perform: { generatePDF() }) } // generate pdf from given view @MainActor func generatePDF() -> URL { // Select UI View to render as pdf let image = ImageRenderer(content: ContentView()) let url = URL.documentsDirectory.appending(path: "generatedPDF.pdf") image.render{ size, context in var mediaBox = CGRect(origin: .zero, size: CGSize(width: size.width, height: size.height)) guard let consumer = CGDataConsumer(url: url as CFURL), let pdfContext = CGContext(consumer: consumer, mediaBox: &mediaBox, nil) else { return } pdfContext.beginPDFPage(nil) pdfContext.translateBy(x: mediaBox.size.width / 2 - size.width / 2, y: mediaBox.size.height / 2 - size.height / 2) context(pdfContext) pdfContext.endPDFPage() pdfContext.closePDF() } print("Saving PDF to \(url.path())") return url } } #Preview { ContentView() } ![]("https://developer.apple.com/forums/content/attachment/67b11ec8-af9e-4ab7-a0a5-0c020b7a45d4" "title=generatedPDF (without scaling).jpg;width=2652;height=2526") ![]("https://developer.apple.com/forums/content/attachment/b2c24a25-3805-4664-8adb-dcb81c3e96c4" "title=generatedPDF (with scaling).jpg;width=2132;height=1510")

Hello, i had to found out, that I can’t call a view out of a ScrollView by tapping on an item of the scroll view. Enclosed minimal code show’s the effect. The tapping is recognized, but the view doesn’t switch to “AnotherView”. Why is this the case? Works as designed or did I misunderstand something fundamental? Any help appreciated. Thx, Peter import SwiftUI struct ContentView: View { var body: some View { ScrollView{ VStack { ForEach(0..<14) {value in Text("Test \(value)") .padding(.vertical) .onTapGesture { print("scrollview-item tapped") AnotherView() } } } } } } struct AnotherView: View { var body: some View { Text("Another View") } } #Preview { ContentView() } #Preview { AnotherView() }```