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Unable to change TabView's background color
Hello, I seem to be unable to change TabView's background color (not the bar, but the background of the entire TabView), no matter what I try. What I am looking for: To make the TabView's background clear. My code: TabView(selection: $activeScreen) { Screen1() .tabItem { Label("Menu", systemImage: "list.dash") } } Screen1 is defined as: struct Screen1: View { var body: some View { VStack { Text("Hello") } .frame(maxWidth: .infinity, maxHeight: .infinity) } } What I have tried, based on suggestions online: Changing UITabBarAppearance in init(), and .onAppear() TabView().background(.clear) In all cases, the TabView's background remains either white or black, depending on the device's theme. I can change the background behind it by placing it in a ZStack, but that is not what I am looking for, I want the background itself to be clear. The only way that TabView will honor .background(.clear) is if I add the following: .tabViewStyle(.page) .indexViewStyle(.page(backgroundDisplayMode: .always)) But this changes the style of the TabView, which is not the desired behavior. Any help would be greatly appreciated, thank you!
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Nov ’24
tvOS Accessibility: How to enable accessibility focus on static text and custom views
Hi guys, I'm trying to add accessibility labels to a static text and custom SwiftUI views. Example: MyView { ... } //.accessibilityElement() .accessibilityElement(children: .combine) //.accessibilityRemoveTraits(.isStaticText) //.accessibilityAddTraits(.isButton) .accessibilityLabel("ACCESSIBILITY LABEL") .accessibilityHint("ACCESSIBILITY HINT") When using 'voiceover' or 'hover text' accessibility features, focus moves only between active elements and not on static elements. When I add .focusable() it works, but I don't want to make those elements focusable when all accessibility features are off. I suppose I could do something like this: .focusable(UIApplication.shared.accessibility.voiceOver.isOn || UIApplication.shared.accessibility.hoverText.isOn) Note: this is just pseudocode, because I don't remember exactly how to detect current accessibility settings. However using focusable() with conditions on hundreds of static texts in an app seems to be overkill. Also the accessibility focus is needed on some control containers where we already have a little more complex handling of focus with conditions in focusable(...) on parent and child elements, so extending it for accesssiblity seems to be too complicated. Is there a simple way to tell accessiblity that an element is focusable specifically for 'hover text' and for 'voiceover'? Example what I want to accomplish for TV content: VStack { HStack { Text(Terminator) if parentalLock { Image(named: .lock) { } .accessibilityLabel(for: hover, "Terminator - parental lock") Text("Sci-Fi * 8pm - 10pm * Remaining 40 min. * Live") .accessibilityLabel(for: hover, "Sci-Fi, 8 to 10pm, Remaining 40 min. Broadcasting Live") } .accessibilityLabel(for: voiceover, "Terminator, Sci-Fi, 8 to 10pm, Remaining 40 min. Broadcasting Live, parental lock")``` I saw all Accessibility WWDC videos 2016, 2022, 2024 and googling it for several hours, but I coudln't find any solution for static texts and custom views. From those videos it appears .accessibilityLabel() should be enough, but it clearly works only on actvie elements and does not work for other SwiftUI views on tvOS without focusable(). Can this be done without using focusable() with conditions for detection which accessibility feature is on? The problem with focusable would be that for accessibility I may need to read a text for parent view, but focus needs to be placed on a child element. I remember problems when focusable() is set on parent view that child was not focusable or something like that - simply put: complications in focus logic. Thanks.
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710
Nov ’24
MSStickerView in SwiftUI not animating by default
I am working on a sticker app and I am building a custom sticker app in SwiftUI. I have created a custom UIViewRepresentable to allow a MSStickerView to be displayed in SwiftUI. I have local *.gif files in my project and I am loading them into the MSStickerView successfully, however when they are loaded in my iMessage sticker extension the stickers are not animating by default. When I tap on the MSStickerView the gif begins to animate, I'm not sure what else I can do to get this working properly in my app. Some sample code below: public struct CustomStickerView: UIViewRepresentable { var sticker: CustomSticker public init(sticker: CustomSticker) { self.sticker = sticker } public func makeUIView(context: Context) -> MSStickerView { let v = MSStickerView() if sticker.fileType == .gif { v.startAnimating() } return v } public func updateUIView(_ uiView: MSStickerView, context: Context) { uiView.sticker = sticker.sticker } } // CustomSticker public var sticker: MSSticker? { guard let imagePath = Bundle.main.path(forResource: name, ofType: ".\(fileType.rawValue)") else { print("Failed to get sticker - \(name).\(fileType.rawValue)") return nil } let path = URL(fileURLWithPath: imagePath) return try? MSSticker(contentsOfFileURL: path, localizedDescription: name) }
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Nov ’24
Label cannot export localized string key
Hello all. This is my code snippet. RecordListView() .tabItem { Label("Record List", systemImage: "list.clipboard") } .tag(Tab.RecordList) When I export localizations, there is no Record List in the .xcloc file. Then I use LocalizedStringKey for Label and export localizations file, the code is as follows: let RecordsString:LocalizedStringKey = "Tab.Records" RecordListView() .tabItem { Label(RecordsString, systemImage: "list.clipboard") } .tag(Tab.RecordList) There is still no Tab.Records.
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613
Nov ’24
Scrolling Table with children in SwiftUI for macOS app
How do I scroll to a row and select it when it is part of collapsed rows in Table ScrollViewReader { scrollViewProxy in Table([node], children: \.children, selection: $selectedNodeID) { TableColumn("Key") { Text($0.key) } TableColumn("Value") { Text($0.val) } } .onChange(of: selectedNodeID) { _, newValue in withAnimation { scrollViewProxy.scrollTo(newValue) } } } The code above works well for the rows that are expanded or at the root level. However, for the rows that are not yet expanded the code above does nothing. How can I update the code so that it scrolls to a row that has not materialized yet. Info: This is a macOS app I am on macOS 15.1.1 with Xcode 16.1 and the minimum target of the app is macOS 15
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373
Nov ’24
SwiftUI App crashes while switching orientation
Hi, I am a new SwiftUI app developer and developing my first application. In the process of designing not very GUI rich app, I noticed my app crashed whenever I switched orientation (testing on multiple iPhone devices). After going through all kind of logs and errors, performance enhancements nothing worked. Then I started rolling back all GUI related features 1 by 1 and tested (I am sure there are better approaches, but excuse me I am novice in app development :) ). Even though it's time consuming, I could pin point the cause of the fatal error and app crash, it's due to multiple .shadow modifiers I used on NavigationLink inside a ForEach look (to be precise I used it like following, .shadow(radius: 15) .shadow(radius: 20) .shadow(radius: 20) .shadow(radius: 20) .shadow(radius: 20) Note, there are only 7 items in List and it uses the Hero View (like app store's Today section) for child views. Once I got rid of shadow modifies or used only 1 app works fine and doesn't crash. Lesson learnt... P.S. It's so ironic that so performance tuned devices couldn't handle this basic GUI stuff.
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Nov ’24
Limiting the Number of Bool (True) Values
I have the following lines of code where I show a bunch of checkboxes, each of which can toggle between on and off with a tap. import SwiftUI struct ContentView: View { @State private var viewModel = ContentViewModel() var body: some View { VStack(alignment: .leading) { List { ForEach(viewModel.models, id: \.id) { model in CheckButtonView(id: model.id, text: model.name, isOn: model.isOn) { id, bool in updateDate(id: id, bool: bool) } } } } } func updateDate(id: String, bool: Bool) { for i in 0..<viewModel.models.count { let oldModel = viewModel.models[i] if oldModel.id == id { let newModel = Content(id: oldModel.id, name: oldModel.name, isOn: bool) viewModel.models.remove(at: i) viewModel.models.insert(newModel, at: i) break } } var count = 0 for i in 0..<viewModel.models.count { let model = viewModel.models[i] if model.isOn { count += 1 } } } } struct CheckButtonView: View { let id: String let text: String @State var isOn: Bool var callBack: (String, Bool) -> Void var body: some View { HStack { Button { isOn.toggle() callBack(id, isOn) } label: { Image(systemName: isOn ? "checkmark.square.fill" : "square") .resizable() .aspectRatio(contentMode: .fit) .frame(width: 18) .tint(!isOn ? .black : .blue) } Text(text) .font(.subheadline) Spacer() } .frame(maxWidth: .infinity) } } struct Content { let id: String let name: String let isOn: Bool } class ContentViewModel: ObservableObject { @Published var models = [Content]() @Published var canChange = true init() { models = [ Content(id: UUID().uuidString, name: "Jim", isOn: false), Content(id: UUID().uuidString, name: "Jenny", isOn: false), Content(id: UUID().uuidString, name: "Nancy", isOn: false), Content(id: UUID().uuidString, name: "Natalie", isOn: false) ] } } According to the picture above, I have two checkboxes that are turned on. Now, what I want to do is let the user turn on as many as two checkboxes only. Can someone think of a good way of doing that? Thanks.
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Nov ’24
Is there a way to disable button tap feedback in watchOS double-tap gesture?
First post here! Is there a way to reduce the number of haptic feedback for double tap on primary button? Context: Double tap is awesome. Two haptic actuations are given to the gesture to let the user know that the gesture is "received" then a third haptic feedback is given shortly after to signal the primary button is tapped. Is there a way to disable the third haptic feedback. In other words make primary action "silent"? I have tested a number of apps that supports double tap, it seems to me that the triple tap is a system level default, and it cannot be changed. Any help would be greatly appreciated.
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482
Nov ’24
ScrollViewReader
I'd like to use ScrollViewReader, but on a list of static text that has formatting such as font colors and bold text. Essentially, my list has a bunch of: Text("some text ") + Text(" and more text").fontWeight(.bold).foregroundStyle(boldColor) Switching to AttributedString would be a pain, and I'm not so sure ScrollViewReader is working correctly. It seems like there are a lot of bugs reports about it. Plus, do we really need a separate string format, just to have proper formatting? Really? Is there another version I'm missing? One that can scroll to anchor points that I could set?
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Nov ’24
MacOS SwiftUI: Back button in NavigationSplitView detail view
I have a Split View with the sidebar, content, and detail. Everything is working, but when I select on a NavigationLink in my detail view, the back button is seen next to the title above the content view. I want that back button to be displayed in the top bar on the left side of the detail view. I was expecting it to do this automatically, but I must be missing something. This is where I want it to appear. This is where it appears. I made a simplified version of my code, because it would be too much to post but this has the same behavior. struct TestView: View { enum SidebarSelections { case cycles } @State private var sidebarSelection: SidebarSelections = .cycles var body: some View { NavigationSplitView(sidebar: { List(selection: $sidebarSelection, content: { Label("Cycles", systemImage: "calendar") .tag(SidebarSelections.cycles) }) }, content: { switch sidebarSelection { case .cycles: NavigationStack { List { // Displayed in Content NavigationLink("Cycle link", destination: { // Displayed in the Detail NavigationStack { List { NavigationLink("Detail Link", destination: { Text("More details") }) } } }) } } } }, detail: { ContentUnavailableView("Nothing to see here", systemImage: "cloud") }) } } Is what I want to do possible? Here is a Stack Overflow post that had it working at one point.
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Nov ’24
Issue with Empty Window Appearing on App Launch for macOS App - Help Needed
I've been struggling with a problem for the past couple of weeks, and I can't seem to figure out the cause. I'm developing an app that allows users to easily switch languages on macOS. The app is ready, and I submitted it for review, but the problem is that Apple has been unable to approve it for the past two weeks due to an issue. Upon launching the app, an empty window/container appears, but I cannot reproduce this issue on my own Macs (M1, M2, M3). On my machines, the app works perfectly and launches without the empty window appearing. Does anyone know how I can identify and resolve this issue? I’ve attached a screenshot of the empty window that needs to be removed from the code, as well as a snippet of the code that might be responsible for it. I would greatly appreciate any advice or suggestions on how to fix this, as I’m unable to reproduce the error on my end. Thanks in advance for your help! @main struct LanguageSwitcherApp: App { @NSApplicationDelegateAdaptor(AppDelegate.self) private var appDelegate var body: some Scene { Settings { EmptyView() } .commands { CommandGroup(after: .appInfo) { Button("Show Language Switcher") { appDelegate.showLanguageSwitcher() } } } } } class AppDelegate: NSObject, NSApplicationDelegate { private var statusItem: NSStatusItem? private var languageSwitcherPanel: LanguageSwitchPanel? func applicationDidFinishLaunching(_ notification: Notification) { statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.variableLength) if let button = statusItem?.button { button.image = NSImage(named: "icon_top") button.action = #selector(showMenu) button.target = self } showLanguageSwitcher() } @objc private func showMenu() { let menu = NSMenu() menu.addItem(NSMenuItem(title: "Close Type Switch", action: #selector(closeApp), keyEquivalent: "q")) statusItem?.menu = menu statusItem?.button?.performClick(nil) statusItem?.menu = nil } func showLanguageSwitcher() { guard languageSwitcherPanel == nil else { return } let panel = LanguageSwitchPanel() let hostingController = NSHostingController(rootView: LanguageSwitchView()) panel.contentView = hostingController.view panel.makeKeyAndOrderFront(nil) NSApp.activate(ignoringOtherApps: true) languageSwitcherPanel = panel } @objc private func closeApp() { NSApp.terminate(nil) } } Screenshot: https://ibb.co/hynrgyw I tried testing the app on my MacBook models (M1, M2, M3) and all of them functioned as expected, launching the app without any additional windows appearing. I also checked the code for any unintended window launches or containers and could not find any issues. I expected the app to launch without any extra empty windows or containers, but when Apple tested it, they encountered an issue with an empty window appearing upon launch.
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Nov ’24
UIViewRepresentable & MVVM
I am trying to get my head around how to implement a MapKit view using UIViewRepresentable (I want the map to rotate to align with heading, which Map() can't handle yet to my knowledge). I am also playing with making my LocationManager an Actor and setting up a listener. But when combined with UIViewRepresentable this seems to create a rather convoluted data flow since the @State var of the vm needs to then be passed and bound in the UIViewRepresentable. And the listener having this for await location in await lm.$lastLocation.values seems at least like a code smell. That double await just feels wrong. But I am also new to Swift so perhaps what I have here actually is a good approach? struct MapScreen: View { @State private var vm = ViewModel() var body: some View { VStack { MapView(vm: $vm) } .task { vm.startWalk() } } } extension MapScreen { @Observable final class ViewModel { private var lm = LocationManager() private var listenerTask: Task&lt;Void, Never&gt;? var course: Double = 0.0 var location: CLLocation? func startWalk() { Task { await lm.startLocationUpdates() } listenerTask = Task { for await location in await lm.$lastLocation.values { await MainActor.run { if let location { withAnimation { self.location = location self.course = location.course } } } } } Logger.map.info("started Walk") } } struct MapView: UIViewRepresentable { @Binding var vm: ViewModel func makeCoordinator() -&gt; Coordinator { Coordinator(parent: self) } func makeUIView(context: Context) -&gt; MKMapView { let view = MKMapView() view.delegate = context.coordinator view.preferredConfiguration = MKHybridMapConfiguration() return view } func updateUIView(_ view: MKMapView, context: Context) { context.coordinator.parent = self if let coordinate = vm.location?.coordinate { if view.centerCoordinate != coordinate { view.centerCoordinate = coordinate } } } } class Coordinator: NSObject, MKMapViewDelegate { var parent: MapView init(parent: MapView) { self.parent = parent } } } actor LocationManager{ private let clManager = CLLocationManager() private(set) var isAuthorized: Bool = false private var backgroundActivity: CLBackgroundActivitySession? private var updateTask: Task&lt;Void, Never&gt;? @Published var lastLocation: CLLocation? func startLocationUpdates() { updateTask = Task { do { backgroundActivity = CLBackgroundActivitySession() let updates = CLLocationUpdate.liveUpdates() for try await update in updates { if let location = update.location { lastLocation = location } } } catch { Logger.location.error("\(error.localizedDescription)") } } } func stopLocationUpdates() { updateTask?.cancel() updateTask = nil } func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) { switch clManager.authorizationStatus { case .authorizedAlways, .authorizedWhenInUse: isAuthorized = true // clManager.requestLocation() // ?? case .notDetermined: isAuthorized = false clManager.requestWhenInUseAuthorization() case .denied: isAuthorized = false Logger.location.error("Access Denied") case .restricted: Logger.location.error("Access Restricted") @unknown default: let statusString = clManager.authorizationStatus.rawValue Logger.location.warning("Unknown Access status not handled: \(statusString)") } } func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) { Logger.location.error("\(error.localizedDescription)") } }
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616
Nov ’24
Horizontal window/map on visionOS
Hi, would anyone be so kind and try to guide me, which technologies, Kits, APIs, approaches etc. are useful for creating a horizontal window with map (preferrably MapKit) on visionOS using SwiftUI? I was hoping to achieve scenario: User can walk around and interact with horizontal map window and also interact with (3D) pins on the map. Similar thing was done by SAP in their "SAP Analytics Cloud" app (second image from top). Since I am complete beginner in this area, I was looking for a clean, simple solution. I need to know, if AR/RealityKit is necessary or is this achievable only using native SwiftUI? I tried using just Map() with .rotation3DEffect() which actually makes the map horizontal, but gestures on the map are out of sync and I really dont know, if this approach is valid or complete rubbish. Any feedback appreciated.
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Nov ’24
macOS SwiftUI document app always shows file picker on startup
DESCRIPTION OF PROBLEM When my Document-based macOS SwiftUI app starts up, it always presents a document picker. I would like it to open any documents that were open when the app last quit, and if none were open, open an "Untitled" document. I understand that there is a setting in System Settings-> Desktop & Dock ("Close windows when quitting an application") that will cause windows to reopen when it is turned off, but I'd like to give users a chance to opt-in for reopening docs even when that is turned on, since it is difficult to find, on by default, and might not be the desired behavior for all apps. I don't see any way to get a list of currently open documents to persist them at shutdown. And even if that's considered a bad idea, I'd at least like a way to prevent the Document picker from being shown at startup and instead create an Untitled document if no documents were open. Ideally, I'd like a way to provide this functionality in SwiftUI that doesn't require macOS 15 or later STEPS TO REPRODUCE Create a SwiftUI macOS document application in Xcode using the provided template, Give it any name you want Run it, create a new ".exampletext" document, save it. Quit the app with the document open. Re-run the app, document picker is shown. Cancel the document picker and quit the app with no windows shown. Re-run the app, document picker is shown.
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Nov ’24
Why is willPresentNotification called twice here?
Please find below a complete app example. It has a button, when you press it, a local notification is created. However, the UnNotificationCenter.delegate is called twice, and I can't understand why. I am trying to move my project from Objective-C to Swift, and my similar code there doesn't get called twice, so I'm confused. Can anybody shine a light on this? Pointers appreciated. App: @main struct NotifTestApp: App { init() { UNUserNotificationCenter.current().delegate = NotificationReceiveHandler.shared configureUserNotifications() } var body: some Scene { WindowGroup { ContentView() } } private func configureUserNotifications() { UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { granted, error in if granted { print("Notification permission granted.") } else if let error = error { print("Error requesting notification permissions: \(error)") } } } } class NotificationReceiveHandler: NSObject, UNUserNotificationCenterDelegate { static let shared = NotificationReceiveHandler() //>> THIS IS CALLED TWICE WHEN I PRESS THE BUTTON func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) { NSLog(">>> Will present notification!") completionHandler([.sound]) } } ///THE UI struct ContentView: View { var body: some View { VStack { Text("👾") .imageScale(.large) .foregroundStyle(.tint) Text("Notification test!") Text("When i press the button, will present is called twice!!").font(.footnote) .padding(10) Button("Create Notification") { createNotification( message: "This is a test notification", header: "Test Notification", category: "TEST_CATEGORY", playSound: true, dictionary: nil, imageName: nil) } .padding() .background(Color.blue) .foregroundColor(.white) .cornerRadius(8) } .padding() } } #Preview { ContentView() } private func createNotification(message: String, header: String, category: String, playSound: Bool = true, dictionary: NSDictionary? = nil, imageName: String? = nil) { let content = UNMutableNotificationContent() content.title = header content.body = message content.categoryIdentifier = category content.badge = NSNumber(value: 0) if let imageName = imageName, let imageURL = Bundle.main.url(forResource: imageName, withExtension: "png") { do { let attachment = try UNNotificationAttachment(identifier: "image", url: imageURL, options: nil) content.attachments = [attachment] } catch { print("Error creating notification attachment: \(error)") } } content.sound = playSound ? UNNotificationSound(named: UNNotificationSoundName("event.aiff")) : nil if let infoDict = dictionary { content.userInfo = infoDict as! [AnyHashable: Any] } let request = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: nil) UNUserNotificationCenter.current().add(request, withCompletionHandler: nil) }
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Nov ’24
SwiftData: Model Container fails completely when CloudKit storage is full
struct ModelContainerSetup { static let shared = ModelContainerSetup() private static let containerIdentifier = "iCloud.Journal" func setupModelContainer() -> ModelContainer { let schema = Schema([User.self]) let modelConfiguration = ModelConfiguration( schema: schema, isStoredInMemoryOnly: false, cloudKitDatabase: .private(Self.containerIdentifier) ) do { return try ModelContainer(for: schema, configurations: [modelConfiguration]) } catch { fatalError("Could not create ModelContainer: \(error)") } } **Expected Behavior: ** When CloudKit storage is full, the app should continue functioning with local storage Data should persist locally even if cloud sync fails Sync should resume when storage becomes available **Actual Behavior: ** ModelContainer initialization fails completely Local data also stops getting saved **Environment: ** iOS 17.0+ SwiftData Private CloudKit database Ideal Behaviour: When iCloud fails, the data should still be saved locally. I do not want to have two different containers so that I can maintain data consistency.
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504
Nov ’24
SwiftUI not observing SwiftData changes
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?
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648
Nov ’24
Using MPSession sendResource Progress in a SwiftUI ProgressView causes crash
When transferring files in a Multipeer Session, using the Progress instances (returned by either sendResource in the sender or the delegate method session(didStartReceiving:) on the receiver) in a SwiftUI ProgressView will eventually cause a crash (EXC_BAD_ACCESS in swift_retain on com.apple.MCSession.syncQueue) I have created a small sample project that demonstrates the problem. It can be found at: https://github.com/eidria/Multipeer-Progress-Demo.git. A screen shot of the stack trace from a crash (crash.jpg) is in the “Images” folder. STEPS TO REPRODUCE Run the sample on two different hosts connected to the same network (project contains both iOS & macOS targets, bug manifests in any combination). When the second instance comes up, they will automatically find and connect to each other. When the “Send Files” button is enabled, clicking it will cause the sender to repeatedly send the file “Image.HEIC” from the “Images” folder to the receiver, which deletes it upon receipt of a successful transfer (i.e. delegate call back is called with a nil error). Subsequent transfers are triggered when the sender receives notice that the prior send completed successfully. Eventually, after some (usually small) number of files have been transferred, either the sender or receiver will crash in the middle of a transfer, with EXC_BAD_ACCESS in swift_retain on com.apple.MCSession.syncQueue. Commenting out the ProgressView in the file FileTransferView.swift will allow the apps to run in perpetuity.
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737
Nov ’24
Most idiotic problem with assign value to value?
Why assigning function.formula = formula does not change function.formula to formula in one go? It's always late one change behind. struct CustomFunction has defined .formula as @MainActor. I feel stupid. There is a part of code: struct CustomFormulaView: View { @Binding var function: CustomFunction @State var testFormula: String = "" @EnvironmentObject var manager: Manager .... .onChange(of: testFormula) { debugPrint("change of test formula: \(testFormula)") switch function.checkFormula(testFormula, on: manager.finalSize) { case .success(let formula): debugPrint("before Change: \(function.formula)") function.formula = formula // Nothing happens debugPrint("Test formula changed: \(testFormula)") debugPrint("set to success: \(formula)") debugPrint("what inside function? \(function.formula)") Task { //Generate Image testImage = await function.image( size: testImageSize), simulate: manager.finalSize) debugPrint("test image updated for: \(function.formula)") } .... and it produces this output when changed from 0.5 to 1.0 Debug: change of test formula: 1.0 Debug: before Change: 0.5 Debug: Test formula changed: 1.0 Debug: set to success: 1.0 Debug: what inside function? 0.5 Debug: test image updated for: 0.5 0.5 is an old value, function.formula should be 1.0 WT??
3
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392
Nov ’24
Unable to inspect SwiftUI view embedded inside UITableView
We have been trying to migrate screens that were developed using UITool Kit to SwiftUI. In the process we have some screens that have SwiftUI embedded inside the UITool kit view. Our developers have defined accessibility ids for all elements in these views and these are inspectable using the native iOS xcode inspector. However when i try inspecting it with the appium inspector i get an empty list with no elements in the hierarchy tree. Attaching a screenshot of the element when inspecting through the native xcode accessibility inspector, Attaching a screenshot of the same screen when inspected through the appium inspector, Also tried printing the XCTest UI dump using appium method, `driver().executeScript("mobile:source", Map.ofEntries(Map.entry("format","description"))) The UI tree i get is the same that i get when inspecting through the appium inspector. Requesting support from the Apple team based on this ticket, [https://github.com/appium/appium/issues/20759)
0
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342
Nov ’24