I'm developing a SwiftUI, CoreData / CloudKit App with Xcode 16.2 & Sequoia 15.2. The main CoreData entity has 20 NSManaged vars and 5 derived vars, the latter being computed from the managed vars and dependent computed vars - this somewhat akin to a spreadsheet. The data entry/updating Form is complex for each managed var because the user needs to be able to enter data in either Imperial or Metric units, and then switch (by Button) between units for viewing equivalents. This has to happen on an individual managed var basis, because some source data are in Imperial and others Metric. Consequently, I use a generalised SubView on the Form for processing the managed var (passed as a parameter with its identity) and then updating the CoreData Entity (about 100 lines of code in total): i.e. there are 20 uses of the generalised SubView within the Main Form. However, none of the SubViews triggers an update of the managed var in the Form, nor computations of the derived vars. On initial load of the app, the CoreData entity is retrieved and the computations happen correctly: thereafter not. No technique for refreshing either View works: e.g. trigger based on NSManagedObjectContextDidSave; nor does reloading the CoreData entity after Context Save (CoreData doesn't recognise changes at the attribute level anyway). If the SubView is removed and replaced with code within the Form View itself, then it works. However, this will require about 40 @State vars, 20 onCommits, etc - so it's not something I'm keen to do. Below is a much-simplified example of the problem. Form{ Section(header: Text("Test Record")){ Text(testRec.dateString ?? "n/a") TextField("Notes",text:$text) .onSubmit{ testRec.notes = text dataStore.contextSave() } //DoubleNumberEntry(testRec: testRec) - doesn't work TextField("Double",value:$numDbl,format: .number) // This works .onSubmit{ testRec.dblNum = numDbl dataStore.contextSave() } TextField("Integer",value: $numInt,format: .number) .onSubmit{ testRec.intNum = Int16(numInt) dataStore.contextSave() } Text(String(format:"%.2f",testRec.computation)) Section(header: Text("Computations")) { Text(String(format:"%.2f",testRec.computation)) Text(String(format:"%.2f",testRec.anotherComputation)) } } } A much simplified version of my NSManaged var entry/updating. struct DoubleNumberEntry: View { let dataStore = MainController.shared.dataStore var testRec : TestRec @State private var numDbl: Double init(testRec: TestRec) { self.testRec = testRec self.numDbl = testRec.dblNum } var body: some View { TextField("Double",value:$numDbl,format: .number) .onSubmit{ testRec.dblNum = numDbl dataStore.contextSave() } } } I'd appreciate any offered solution or advice. Regards, Michaela

Basic Information Please provide a descriptive title for your feedback: Sheet presentationDetents breaks after rapid open/dismiss cycles Which platform is most relevant for your report? iOS Description Steps to Reproduce: Create a sheet with presentationDetents([.medium]) Rapidly perform these actions multiple times (usually 3-4 times): a. Open the sheet b. Immediately scroll down to dismiss Open the sheet again Observe that the sheet now appears at .large size, ignoring the .medium detent Expected Result: Sheet should consistently maintain .medium size regardless of how quickly it is opened and dismissed. Actual Result: After rapid open/dismiss cycles, the sheet ignores .medium detent and appears at .large size. Reproduction Rate: Occurs consistently after 3-4 rapid open/dismiss cycles More likely to occur with faster open/dismiss actions Configuration: iOS 18 Xcode 16.0 (16A242d) SwiftUI Device: iPhone 14

Some strange visual artifacts appeared in my app after updating Xcode to 16.0. The old version of the app was built with Xcode 15.x and working fine without any visual artifacts, but for the latest release I've used Xcode 16.0 and some strange visual artifacts appeared in LazyVStack on iOS 18.x. https://www.veed.io/view/828ed62c-a8ee-4102-846c-55b28a7f4b74?panel=share Anyone can help me with a fix or workaround ?

I try to convert view to vector graphic (PDF) using ImageRenderer. But output image has ALL coordinates rounded to integer values, which is not OK - some very small circles become elipses, squares are no longer squares, very detailed or small shapes are distorted by rounding coordinates. Is a some option to switch off rounding?

I’m looking for the easiest and most efficient way to convert a SwiftUI Image to Data so that I can store it in SwiftData. let image: Image let data: Data = GetImageData(image: image) How would I implement the GetImageData function above? I have found examples of how to do so with UIImage but not Image.

Is MultiPolygon overlay support going to be integrated with SwiftUI? I have made a post on here previously without a reply :( Any suggestions on how to display multi-polygons within MapKit for SwiftUI(https://developer.apple.com/documentation/mapkit/mappolygon)? At the moment it is not supported and only supported by MapKit for UIKit(https://developer.apple.com/documentation/mapkit/mkmultipolygon).

We have an iPad app and are using the new TabView and TabSection views in our sidebar. The TabSection is populated with data from a @FetchRequest that fetches data from CoreData. The data in CoreData is updated by a single worker that makes sure every value only exists once. This is done by using an OperationQueue with maxConcurrentOperationCount set to 1. This is crashing for our users, and we can't figure out why. We can't reproduce it, and it only seems to happen on iPadOS. We have the same code running on macOS and haven't received any reports. (We collect them all via 3rd party). The error is: NSInternalInconsistencyException Fatal: supplied item identifiers are not unique. Duplicate identifiers: {( ... )} Where ... is one to many comma separated strings. In our latest update we made sure the values are unique by passing them through a Set, unfortunately this is till crashing. Here's the fix we tried. var uniqueTags: [HashTag] { let set = Set(hashTags) let array = Array(set) return array.sorted { $0.name?.lowercased() ?? "" < $1.name?.lowercased() ?? "" } } We're out of ideas and have no idea what to do next.

Hi, Im developing a data centric App using SwiftData, I noticed that the device I use for testing doesn't sync its data with the simulator although both have same Apple Account ? What's Im missing here ? arched is my project settings. Kind Regards

I receive the following compiler error: Cannot infer key path from context; consider explicitly specifying a root type when I attempt an @Environment(\.foodRepository) lookup in a descendant View. Here's the setup in my App class: import SwiftUI import SwiftData @main struct BulkCutApp: App { private var foodRepository: FoodRepository = /* some code*/ var body: some Scene { WindowGroup { ContentView() .foodRepository(foodRepository) } } } extension View { func foodRepository(_ customValue: FoodRepository) -> some View { environment(\.foodRepository, customValue) } } extension EnvironmentValues { var foodRepository: FoodRepository { get { self[FoodRepositoryKey.self] } set { self[FoodRepositoryKey.self] = newValue } } } struct FoodRepositoryKey: EnvironmentKey { static var defaultValue: FoodRepository = FoodRepository(food:[]) } Nothing special in FoodRepository: @Observable class FoodRepository { var food: [Food] // more code }

I want to create master details relationship between patient and vitals signs so which of option codes below are better performance wise ? Option one is master - details done manually .. option 1 @Model class TestResult { @Attribute(.primaryKey) var id: UUID var patientID: UUID Option 2 @Model final class Vital { var patient: Patient?

Im building an recipe app for the social media of my mother. i already have the functionality for the users, when a user gets created an empty array gets initiated at the database named favoriteRecipes, which stores the id of his favorite recipes to show in a view. This is my AuthViewModel which is relevant for the user stuff: import Firebase import FirebaseAuth import FirebaseFirestore protocol AuthenticationFormProtocol { var formIsValid: Bool { get } } @MainActor class AuthViewModel : ObservableObject { @Published var userSession: FirebaseAuth.User? @Published var currentUser: User? @Published var currentUserId: String? init() { self.userSession = Auth.auth().currentUser Task { await fetchUser() } } func signIn(withEmail email: String, password: String) async throws { do { let result = try await Auth.auth().signIn(withEmail: email, password: password) self.userSession = result.user await fetchUser() // fetch user sonst profileview blank } catch { print("DEBUG: Failed to log in with error \(error.localizedDescription)") } } func createUser(withEmail email: String, password: String, fullName: String) async throws { do { let result = try await Auth.auth().createUser(withEmail: email, password: password) self.userSession = result.user let user = User(id: result.user.uid, fullName: fullName, email: email) let encodedUser = try Firestore.Encoder().encode(user) try await Firestore.firestore().collection("users").document(result.user.uid).setData(encodedUser) await fetchUser() } catch { print("Debug: Failed to create user with error \(error.localizedDescription)") } } func signOut() { do { try Auth.auth().signOut() // sign out user on backend self.userSession = nil // wipe out user session and take back to login screen self.currentUser = nil // wipe out current user data model } catch { print("DEBUG: Failed to sign out with error \(error.localizedDescription)") } } func deleteAcocount() { let user = Auth.auth().currentUser user?.delete { error in if let error = error { print("DEBUG: Error deleting user: \(error.localizedDescription)") } else { self.userSession = nil self.currentUser = nil } } } func fetchUser() async { guard let uid = Auth.auth().currentUser?.uid else { return } currentUserId = uid let userRef = Firestore.firestore().collection("users").document(uid) do { let snapshot = try await userRef.getDocument() if snapshot.exists { self.currentUser = try? snapshot.data(as: User.self) print("DEBUG: current user is \(String(describing: self.currentUser))") } else { // Benutzer existiert nicht mehr in Firebase, daher setzen wir die userSession auf nil self.userSession = nil self.currentUser = nil } } catch { print("DEBUG: Fehler beim Laden des Benutzers: \(error.localizedDescription)") } } } This is the code to fetch the favorite recipes, i use the id of the user to access the collection and get the favoriteRecipes out of the array: import SwiftUI @MainActor class FavoriteRecipeViewModel: ObservableObject { @Published var favoriteRecipes: [Recipe] = [] @EnvironmentObject var viewModel: AuthViewModel private var db = Firestore.firestore() init() { Task { await fetchFavoriteRecipes() } } func fetchFavoriteRecipes() async{ let userRef = db.collection("users").document(viewModel.userSession?.uid ?? "") do { let snapshot = try await userRef.collection("favoriteRecipes").getDocuments() let favoriteIDs = snapshot.documents.map { $0.documentID } let favoriteRecipes = try await fetchRecipes(recipeIDs: favoriteIDs) } catch { print("DEBUG: Failed to load favorite recipes for user: \(error.localizedDescription)") } } func fetchRecipes(recipeIDs: [String]) async throws -&gt; [Recipe] { var recipes: [Recipe] = [] for id in recipeIDs { let snapshot = try await db.collection("recipes").document(id).getDocument() if let recipe = try? snapshot.data(as: Recipe.self) { recipes.append(recipe) } } return recipes } } Now the Problem occurs at the build of the project, i get the error SwiftUICore/EnvironmentObject.swift:92: Fatal error: No ObservableObject of type AuthViewModel found. A View.environmentObject(_:) for AuthViewModel may be missing as an ancestor of this view. I already passed the ViewModel instances as EnvironmentObject in the App Struct. import SwiftUI import FirebaseCore class AppDelegate: NSObject, UIApplicationDelegate { func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -&gt; Bool { FirebaseApp.configure() return true } } @main struct NimetAndSonApp: App { @StateObject var viewModel = AuthViewModel() @StateObject var recipeViewModel = RecipeViewModel() @StateObject var favoriteRecipeViewModel = FavoriteRecipeViewModel() @UIApplicationDelegateAdaptor(AppDelegate.self) var delegate var body: some Scene { WindowGroup { ContentView() .environmentObject(viewModel) .environmentObject(recipeViewModel) .environmentObject(favoriteRecipeViewModel) } } }

I have an app that needs to store a SwiftUI Color within SwiftData and I was wondering if anyone had found a way to do so easily and accurately. I'd prefer not to have to store the Color components (e.g. RGB values) and would ideally like to have a single variable in the @Model that stores the Color. I had considered using an extension to the Color type to create a HEX encoded String of the Color and an initializer that creates a Color from the HEX encoded String. Unfortunately, doing so proved not to be accurate due data loss when converting component values to integers. When testing this in Photoshop, the original color #FBAA1D became #FFAB00. Is there a way to accurately store the Color in SwiftData, possibly using a binary conversion to Data or somehow storing the Color.Resolved, which itself does not appear to be compatible with SwiftData. Any thoughts on how to best store the Color accurately within SwiftData would be greatly appreciated.

I have an app with the following model: @Model class TaskList { @Attribute(.unique) var name: String // Relationships var parentList: TaskList? @Relationship(deleteRule: .cascade, inverse: \TaskList.parentList) var taskLists: [TaskList]? init(name: String, parentTaskList: TaskList? = nil) { self.name = name self.parentList = parentTaskList self.taskLists = [] } } If I run the following test, I get the expected results - Parent has it's taskLists array updated to include the Child list created. I don't explicitly add the child to the parent array - the parentList relationship property on the child causes SwiftData to automatically perform the append into the parent array: @Test("TaskList with children with independent saves are in the database") func test_savingRootTaskIndependentOfChildren_SavesAllTaskLists() async throws { let modelContext = TestHelperUtility.createModelContext(useInMemory: false) let parentList = TaskList(name: "Parent") modelContext.insert(parentList) try modelContext.save() let childList = TaskList(name: "Child") childList.parentList = parentList modelContext.insert(childList) try modelContext.save() let fetchedResults = try modelContext.fetch(FetchDescriptor<TaskList>()) let fetchedParent = fetchedResults.first(where: { $0.name == "Parent"}) let fetchedChild = fetchedResults.first(where: { $0.name == "Child" }) #expect(fetchedResults.count == 2) #expect(fetchedParent?.taskLists.count == 1) #expect(fetchedChild?.parentList?.name == "Parent") #expect(fetchedChild?.parentList?.taskLists.count == 1) } I have a subsequent test that deletes the child and shows the parent array being updated accordingly. With this context in mind, I'm not seeing these relationship updates being observed within SwiftUI. This is an app that reproduces the issue. In this example, I am trying to move "Finance" from under the "Work" parent and into the "Home" list. I have a List that loops through a @Query var taskList: [TaskList] array. It creates a series of children views and passes the current TaskList element down into the view as a binding. When I perform the operation below the "Finance" element is removed from the "Work" item's taskLists array automatically and the view updates to show the removal within the List. In addition to that, the "Home" item also shows "Finance" within it's taskLists array - showing me that SwiftData is acting how it is supposed to - removed the record from one array and added it to the other. The View does not reflect this however. While the view does update and show "Finance" being removed from the "Work" list, it does not show the item being added to the "Home" list. If I kill the app and relaunch I can then see the "Finance" list within the "Home" list. From looking at the data in the debugger and in the database, I've confirmed that SwiftData is working as intended. SwiftUI however does not seem to observe the change. ToolbarItem { Button("Save") { list.name = viewModel.name list.parentList = viewModel.parentTaskList try! modelContext.save() dismiss() } } To troubleshoot this, I modified the above code so that I explicitly add the "Finance" list to the "Home" items taskLists array. ToolbarItem { Button("Save") { list.name = viewModel.name list.parentList = viewModel.parentTaskList if let newParent = viewModel.parentTaskList { // MARK: Bug - This resolves relationship not being reflected in the View newParent.taskLists?.append(list) } try! modelContext.save() dismiss() } } Why does my explicit append call solve for this? My original approach (not manually updating the arrays) works fine in every unit/integration test I run but I can't get SwiftUI to observe the array changes. Even more strange is that when I look at viewModel.parentTaskList.taskLists in this context, I can see that the list item already exists in it. So my code effectively tries to add it a second time, which SwiftData is smart enough to prevent from happening. When I do this though, SwiftUI observes a change in the array and the UI reflects the desired state. In addition to this, if I replace my custom list rows with an OutlineGroup this issue doesn't manifest itself. SwiftUI stays updated to match SwiftData when I remove my explicit array addition. I don't understand why my views, which is passing the TaskList all the way down the stack via Bindable is not updating while an OutlineGroup does. I have a complete reproducible ContentView file that demonstrates this as a Gist. I tried to provide the source here but it was to much for the post. One other anecdote. When I navigate to the TaskListEditorScreen and open the TaskListPickerScreen I get the following series of errors: error: the replacement path doesn't exist: "/var/folders/07/3px_03md30v9n105yh3rqzvw0000gn/T/swift-generated-sources/@_swiftmacro_09SwiftDataA22UIChangeDetectionIssue20TaskListPickerScreenV9taskLists33_A40669FFFCF66BB4EEA5302BB5ED59CELL5QueryfMa.swift" I saw another post regarding these and I'm wondering if my issue is related to this. So my question is, do I need to handle observation of SwiftData models containing arrays differently in my custom views? Why do bindings not observe changes made by SwiftData but they observe changes made explicitly by me?

need to use CocoaPods, Ruby, and Xcode to set up a development environment. trying to install CocoaPods and running into compatibility issues with Ruby versions (>= 2.7.0) and can't use rbenv.

I am trying to work on a new app but everytime I try to run it and test it I get this error error reading dependency file '/Users/jacobwright/Library/Developer/Xcode/DerivedData/LevelingUp:_Life-baixnmqgtntqiacdkadvwrgeanox/Build/Intermediates.noindex/LevelingUp: Life.build/Debug-iphonesimulator/LevelingUp: Life iOS.build/Objects-normal/arm64/LevelingUp: Life iOS-master-emit-module.d': unexpected character in prerequisites and I do not know what to do. I even tryed makeing a new project and running it with out doing anything and I get the same thing I have tried Deleting Xcode and Reinstalling, and updating my computer and Xcode. I am not sure what else to try and I was wondering if anyone else is getting this and how do i fix it?

I have a view, and in this view I bind Axis class values — lowerBound which is a regular property and at – computed one which comes from protocol HasPositionProtocol associated with Axis. struct AxisPropertiesView<Axis>: View where Axis: StyledAxisProtocol, Axis: HasPositionProtocol, Axis: Observable { @Bindable var axis: Axis var body: some View { HStack { TextField("", text: $axis.shortName) .frame(width: 40) TextField("", value: $axis.lowerBound, format: .number) .frame(width: 45) //Problem is here: Slider(value: $axis.at, in: axis.bounds) ... Unfortunately I got en error Failed to produce diagnostic for expression; ... for whole View. But if I remove Slider from View, error disappeared. What could cause this strange behaviour? Value of .at comes from: public extension HasPositionProtocol { ///Absolut position on Axis var at: Double { get { switch position { case .max: return bounds.upperBound case .min: return bounds.lowerBound case .number(let number): return number } } set { switch newValue { case bounds.lowerBound: position = .min case bounds.upperBound: position = .max default: position = .number(newValue) } } } }

I'm using SwiftData to store data in my app and I recently had to store both image data and colors. I have therefore added two variables to my model, one of type Data? and the other of type Color.Resolved? If both are set to nil then I can call context.save() without any error but when providing a value of type Color.Resolved, the following error message occurs: Thread 1: Fatal error: Composite Coder only supports Keyed Container. Any guidance on how to solve this and what needs to be done to store image data and colors with SwiftData?

Is it possible to let the user select points of interest on the Map, such as restaurants, grocery stores, gas stations etc. I want the user to be able to select these points of interest that are already on the map, not those that I add to the map. Is this possible with the SwiftUI version of the MapKit Map?

I don't believe it's possible today to access the icon and tint color of a MapFeature although this would be incredibly helpful in the app that I'm building presently as I'm storing places in SwiftData and would like to use the same icon and tint color when listing places in the app. It would be awesome if this were possible in the next version of iOS, iPadOS visionOS etc., if not presently possible.

Hi, The dataModule in code below is a swiftData object being passed to the view and its property as key path but when trying to modify it I'm getting the error ."Cannot assign through subscript: 'self' is immutable" how to solve this issue ? Kind Regards struct ListSel<T: PersistentModel>: View { @Bindable var dataModule: T @Binding var txtValue: String var keyPath: WritableKeyPath<T, String> var turncate: CGFloat? = 94.0 var image = "" var body: some View { HStack { Text(txtValue) .foregroundColor(sysSecondary) .font(.subheadline) .onChange(of: txtValue) { value in dataModule[keyPath: keyPath] = value } Image(systemName: image) .foregroundColor(sysSecondary) .font(.subheadline) .imageScale(.small) .symbolRenderingMode(.hierarchical) .scaleEffect(0.8) } .frame(width: turncate, height: 20, alignment: .leading) .truncationMode(.tail) } }