I create a simple list, there are two kind of item: conversation and message, if click a conversation, it will expand it's messages. So there will be some insert and remove updates. I calculate the difference results and perform the batch update. displayItems = newDisplayItems tableView.beginUpdates() tableView.removeRows(at: IndexSet(removeIndex), withAnimation: [.effectFade, .slideUp]) tableView.insertRows(at: IndexSet(insertIndex), withAnimation: [.effectFade, .slideDown]) tableView.endUpdates() In most cases, the animation looks fine, but when the mock data is large (> 1000?) and called scrollRowToVisible to scroll to the last row in viewDidAppear, then click some conversations above, the UI broken. Is there something wrong? Would appreciate help from someone experienced with NSTableView. Example code

I noticed on the Find My app in the new iOS 26 beta that the TabView and the sheet seem to be part of the same view. When you collapse the sheet, the TabView is still visible, and you can swipe up to view the sheet again. Is there a way to recreate this effect? Preferably in SwiftUI, but UIKit works too.

In iOS 18, I've observed unexpected behavior related to the UINavigationBar when transitioning between view controllers that have differing navigation bar visibility settings. Specifically, when returning from a modal presentation or a web view, the navigation bar reappears with an unexpected height (e.g., 103 points) and lacks content, displaying only an empty bar. Start with a UIViewController (e.g., HomeViewController) where the navigation bar is hidden using: override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) navigationController?.setNavigationBarHidden(true, animated: animated) } Present another UIViewController (e.g., a web view) modally. Dismiss the presented view controller. Observe that upon returning to HomeViewController, the navigation bar is visible with increased height and lacks expected content. Expected Behavior: The navigation bar should remain hidden upon returning to HomeViewController, maintaining the state it had prior to presenting the modal view controller. Actual Behavior: Upon dismissing the modal view controller, the navigation bar becomes visible with an unexpected height and lacks content, leading to a disrupted user interface. Additional Observations: This issue is specific to iOS 18; it does not occur in iOS 17 or earlier versions. The problem seems to stem from setting the navigation bar to be visible in the viewWillDisappear method, as shown below: override func viewWillDisappear(_ animated: Bool) { super.viewWillDisappear(animated) navigationController?.setNavigationBarHidden(false, animated: animated) } Removing or modifying this line mitigates the issue, suggesting a change in the view controller lifecycle behavior in iOS 18. Request for Clarification: Is this change in behavior intentional in iOS 18, or is it a regression? Understanding whether this is a new standard or a bug will help in implementing appropriate solutions. Workaround: As a temporary measure, I've adjusted the navigation bar visibility settings to avoid changing its state in viewWillDisappear, instead managing it in viewWillAppear or viewDidAppear. References: Similar issues have been discussed in the Apple Developer Forums: iPad OS 18 UINavigationBar display incorrectly

There are hundreds of functions in my project that require creating shortcuts, but AppShortcutsProvider only supports up to 10 AppShortcut declarations, so I used over 100 AppIntents for users to manually add shortcuts (I did not add them to AppShortcutsProvider); The problem now is that I hope all the AppIntents I declare have specific names and function icons. I have tried my best to configure AppIntents with the query document, but the default display in the shortcut app is the icon of this application instead of the function icon I set. My code is as follows: struct ResizeImageIntent: AppIntent { static var title: LocalizedStringResource = "修改图片尺寸" static var description: IntentDescription = IntentDescription("快速打开修改图片尺寸功能") static var openAppWhenRun: Bool = true func perform() async throws -> some IntentResult { if let url = URL(string: "toolbox://resizeimage") { await UIApplication.shared.open(url) } return .result() } } The following is the code with icon configuration added: struct VideoParseIntent: AppIntent { static var title: LocalizedStringResource = "万能解析" static var description: IntentDescription = IntentDescription("快速打开万能解析功能") static var openAppWhenRun: Bool = true // 修正：返回AppShortcut数组 static var appShortcuts: [AppShortcut] { [ AppShortcut( intent: VideoParseIntent(), phrases: ["使用万能解析"], systemImageName: "play.rectangle.on.rectangle" // 系统内置图标 ) ] } func perform() async throws -> some IntentResult { if let url = URL(string: "toolbox://videoparse") { await UIApplication.shared.open(url) } return .result() } }

I have a button with the following properties: accessibilityLabel: "Action Button", traits: "Button", accessibilityHint: "Performs the main action". The voiceover reads the button as follows: Action Button, Button, Performs the main action. I want to understand how to configure it to only speak the accessibilityHint or only the accessibilityLabel and never speak the traits. In another example, a switch has the traits: Button, and Toggle. So these traits are a part of what the voiceover speaks. I want only the accessibilityLabel or accessibilityHint to be spoken in this case. Please let me know how. Thanks

I'm implementing infinite scrolling with Swift Charts where additional historical data loads when scrolling near the beginning of the dataset. However, when new data is loaded, the chart's scroll position jumps unexpectedly. Current behavior: Initially loads 10 data points, displaying the latest 5 When scrolling backwards with only 3 points remaining off-screen, triggers loading of 10 more historical points After loading, the scroll position jumps to the 3rd position of the new dataset instead of maintaining the current view Expected behavior: Scroll position should remain stable when new data is loaded User's current view should not change during data loading Here's my implementation logic using some mock data: import SwiftUI import Charts struct DataPoint: Identifiable { let id = UUID() let date: Date let value: Double } class ChartViewModel: ObservableObject { @Published var dataPoints: [DataPoint] = [] private var isLoading = false init() { loadMoreData() } func loadMoreData() { guard !isLoading else { return } isLoading = true let newData = self.generateDataPoints( endDate: self.dataPoints.first?.date ?? Date(), count: 10 ) self.dataPoints.insert(contentsOf: newData, at: 0) self.isLoading = false print("\(dataPoints.count) data points.") } private func generateDataPoints(endDate: Date, count: Int) -> [DataPoint] { var points: [DataPoint] = [] let calendar = Calendar.current for i in 0..<count { let date = calendar.date( byAdding: .day, value: -i, to: endDate ) ?? endDate let value = Double.random(in: 0...100) points.append(DataPoint(date: date, value: value)) } return points.sorted { $0.date < $1.date } } } struct ScrollableChart: View { @StateObject private var viewModel = ChartViewModel() @State private var scrollPosition: Date @State private var scrollDebounceTask: Task<Void, Never>? init() { self.scrollPosition = .now.addingTimeInterval(-4*24*3600) } var body: some View { Chart(viewModel.dataPoints) { point in BarMark( x: .value("Time", point.date, unit: .day), y: .value("Value", point.value) ) } .chartScrollableAxes(.horizontal) .chartXVisibleDomain(length: 5 * 24 * 3600) .chartScrollPosition(x: $scrollPosition) .chartXScale(domain: .automatic(includesZero: false)) .frame(height: 300) .onChange(of: scrollPosition) { oldPosition, newPosition in scrollDebounceTask?.cancel() scrollDebounceTask = Task { try? await Task.sleep(for: .milliseconds(300)) if !Task.isCancelled { checkAndLoadMoreData(currentPosition: newPosition) } } } } private func checkAndLoadMoreData(currentPosition: Date?) { guard let currentPosition, let earliestDataPoint = viewModel.dataPoints.first?.date else { return } let timeInterval = currentPosition.timeIntervalSince(earliestDataPoint) if timeInterval <= 3 * 24 * 3600 { viewModel.loadMoreData() } } } I attempted to compensate for this jump by adding: scrollPosition = scrollPosition.addingTimeInterval(10 * 24 * 3600) after viewModel.loadMoreData(). However, this caused the chart to jump in the opposite direction by 10 days, rather than maintaining the current position. What's the problem with my code and how to fix it?

I have an outside Mac App Store app. It has an action extension. I can't get it to run from Xcode. I try to debug it from Safari. It shows up in the menu when I click the 'rollover' button but it doesn't show up in the UI at all. Xcode doesn't give me any indication as to what the problem is. I see this logs out in console when I try to open the action extension: Prompting policy for hardened runtime; service: kTCCServiceAppleEvents requires entitlement com.apple.security.automation.apple-events but it is missing for accessing={TCCDProcess: identifier=BundleIdForActionExtHere, pid=6650, auid=501, euid=501, binary_path=/Applications/AppNamehere.app/Contents/PlugIns/ActionExtension.appex/Contents/MacOS/ActionExtension}, requesting={TCCDProcess: identifier=com.apple.appleeventsd, pid=550, auid=55, euid=55, binary_path=/System/Library/CoreServices/appleeventsd}, I don't see why the Action extension needs Apple events but I added it to the entitlements anyway but it doesn't seem to matter. The action extension fails to open.

I have added multiple status icons to my project, in the form of .icon files created with Icon Composer. The main app icon works, but the status icons are not working. I am attempting to load the images from the asset catalog using NSImage imageNamed:, and apply them to the NSApp dockTile using NSGlassEffectContainerView. I don't even know if that attempt is going to work, as I never get past the stage of NSImage loading the icons. Maybe someone on the forums knows what to do there? I'd be willing to use one of my coding support incidents to work through this if necessary, as my two incidents will expire as my subscription rolls over in August anyway. My project lives at https://github.com/losnoco/cog/, and the Tahoe attempt WIP lives in the wip.tahoe branch, with the latest commit as of this post being the attempt to adapt the Dock Icon generation. I'd love to know if I can adapt this easily. I'm also still trying to support existing non-Glass custom .png icons the user can add to their profile folder with buttons in the preferences, as well as supporting legacy status icons on pre-Tahoe installs. I also try to add a progress bar to the dock tile view when the app is processing something at length.

I'd like to persist the path on a sidebar selection, so when user comes back to the sidebar selection, they land where they were before. Unexpectedly, the path gets cleared when sidebarSelection is changed from the NavigationStack that uses the path to something else. Is this an intended behavior? How to workaround it? Using TabView is one way, but TabView has its own problems, so I'm wondering if there's a solution within NavigationSplitView first. Here is a minimal reproduce of the issue: struct Home2: View { private enum SidebarSelection: CaseIterable, Identifiable { var id: Self { self } case files, tags } @State private var sidebarSelection: SidebarSelection? = .files @State private var path: [Int] = [] var body: some View { NavigationSplitView { List(SidebarSelection.allCases, selection: $sidebarSelection) { selection in switch selection { case .files: Label("Files", image: "custom.square.stack") case .tags: Label("Tags", systemImage: "grid") } } } detail: { switch sidebarSelection { case .files: NavigationStack(path: $path) { Subview(depth: 1) .navigationDestination(for: Int.self) { Subview(depth: $0) } } case .tags: Text("Tags") default: EmptyView() } } .onChange(of: path) { print("\(path.count)") } } } struct Subview: View { let depth: Int var body: some View { List { NavigationLink("Next: \(depth + 1)", value: depth + 1) } .navigationTitle("Depth \(depth)") } } #Preview("Home2") { Home2() }

Hi, I have a SwiftUI View, that is attached to a 3D object in Reality View. This is supposed to be a HUD for the user to select a few things. I wanted a sub menu for one of the top level buttons. But looks like none of the reasonable choices like Menu, Sheet or Popover work. Is there a known limitation of RealityKit Views where full SwiftUI cannot be used? Or am I doing something wrong? For example, Button { SLogger.info("Toggled") withAnimation { showHudPositionMenu.toggle() } } label: { HStack { Image(systemName: "rectangle.3.group") Text("My Button") } } .popover(isPresented: $showHudPositionMenu, attachmentAnchor: attachmentAnchor) { HudPositionMenuItems(showHudPositionMenu: $showHudPositionMenu, currentHudPosition: $currentHudPosition) } This will print "Toggled" but will not display the MenuItems Popover. If it makes any difference, this is attached to a child of a head tracked entity.

When the perform method of my AppIntent returns the custom view's dialog, and after I click the "Click Test" button, my app will be launched, but this dialog does not close. How can I close it? struct QuestionResultView: View { var body: some View { VStack { if #available(iOS 17.0, *) { Button(role:.cancel, intent: OpenAppIntent()) { Text("Click Test") } } }.frame(height: 300) } } struct OpenAppIntent : AppIntent { static let title: LocalizedStringResource = "Open my app" static let openAppWhenRun: Bool = true static let isDiscoverable: Bool = false; @MainActor func perform() async throws -> some IntentResult { return .result() } } struct OpenPhotoRecognizing: AppIntent { static let title: LocalizedStringResource = "Read photo" static let description = IntentDescription("") static let openAppWhenRun: Bool = false func perform() async throws -> some IntentResult & ShowsSnippetView & ProvidesDialog{ return .result(dialog: "Demo Test") { DemoResultView() } } }

Prior to iOS 26, it was possible to design an inputAccessoryView(Controller) that would integrate seamlessly with the system keyboard, by which I mean appearing as a natural extension of the system keyboard. For example, using CYRKeyboardButton https://github.com/tmcintos/CYRKeyboardButton. To date, I have successfully used this to provide an enhanced numeric key row within my apps, which is a distinguishing feature of these apps. It took a lot of engineering and testing effort to perfect this design. However, with iOS 26 the design is completely broken due to the system keyboard UI change, which makes it impossible to display an inputAccessoryView seamlessly along the top of the system keyboard (see attached screenshots). In my opinion, it is just plain reckless for Apple to make these kinds of trivial UI changes, which break existing app designs without adding any significant value to the user experience. iOS ≤ 18.x: iOS 26 beta:

(EN): After upgrading to macOS 15+, the system contains two incompatible versions of the PingFang (苹方) font: 1. A system-provided version (/System/Library/Fonts/PingFang.ttc) 2. A user-installed version via Font Book (located in ~/Library/Fonts or /Library/Fonts) When a user installs or removes the PingFang font via Font Book after the app starts, font resolution may switch, causing garbled text in newly opened windows or views. This issue did not occur in macOS 13 or 14, and seems specific to how macOS 15+ handles system and user font overlays.

Like this Here's my code

I was trying to move from appkit to swiftUI. As a learning project I am building a cellular automata style project based on Pattersons Worms.. I am trying something similar to the EA game Worms? for the Commodore 64. There is a video on YouTube of the game running, but I'm not allowed to link it here. The problem I have is that the animation is driven by a ruleset. When the automata hits a configuration that is not in the ruleset it is supposed to stop and ask the user. For each step the model returns either the next move, or nil to indicate the user need to make a choice that will be sent back to the model to be added to the ruleset. My current approach, and I might be following the wrong path, is a ZStack where the bottom level is the grid, the middle level is the established worm segments and the top level is either the animation of the next worm segment or the user chooser to choose the segment. I've only implemented the animation of the next worm segment. The idea is that when the model adds a segment that it first animated at the top level and then displayed by the middle level. Then the top level animates the next segment. I was animating the trim on the segment to draw the line. If the current move is nil, then the middle level draws the segment. If current move has a value, the animation draw it, and then on completion sets the current move to nil so that the bottom level draw it. The problem I ran into was resetting the animation to draw the next segment. I've tried two approaches. in one the completion resets the animation boolean variable, but I need a manual step to set the next stage of the animation. The other uses the completion to set the next step, but it the animation doesn't run for the step and the display is an always a step behind. I'm not sure how to both update the move and reset the animation at the same time. I have uploaded a simplified version without the full grid and simplified model to GitHub (https://github.com/thomasrdean/AnimationTest). Is there any other way to reset the animation the than the completion so I can use the completion to retrieve the next step from the model?

May I ask what the official term is for the top indicator that appears during background recording? I haven't been able to find it in the official documentation.

tl;dr: UITextView does not auto layout when isScrollEnabled = false I have a screen with multiple UITextViews on it, contained within a ScrollView. For each textview, I calculate the height needed to display the entire content in SwiftUI and set it using the .frame(width:height:) modifier. The UITextView will respect the size passed in and layout within the container, but since UITextView is embedded within a UIScrollView, when a user attempts to scroll on the page, often they will scroll within a UITextView block rather than the page. They currently need to scroll along the margins outside of the textview to get the proper behavior. Since I am already calculating the height to display the text, I don't want the UITextView to scroll. However, when I set isScrollEnabled = false, the text view displays in a single long line that gets truncated. I have tried Setting various frame/size attributes but that seems to have zero affect on the layout. Embedding the textView within a UIView, and then sizing the container, but then the textView does not display at all. Setting a fixed size textContainer in the layoutManager but did not work. There's a lot of code so I can't copy/paste it all, but generally, it looks like struct SwiftUITextEditor: View { @State var text: AttributedString = "" var body: some View { ZStack { MyTextViewRepresentable(text: $text) } .dynamicallySized(from: $text) } } struct MyTextViewRepresentable: UIViewRepresentable { @Binding var text: AttributedString let textView = UITextView(usingTextLayoutManager: true) func makeUIView(context: Context) -> UITextView { textView.attributedText = text textView.isScrollEnabled = false } ... }

Its document says openDocument can open a document at a specific URL. So I've saved a model as a JSON object with its URL and a bookmark as Data. With its security-scoped bookmark data resolved, I am able to open a document except that the app will crash right after opening a document. Console says should only be called in the main thread struct ContentView: View { @EnvironmentObject var bookmarkViewModel: BookmarkViewModel var body: some View { VStack { } .onAppear { loadBookmarks() } } extension ContentView { func loadBookmarks() { print("1 \(Thread.current)") // NSMainThread Task { for bookmarkItem in bookmarkViewModel.bookmarkItems { // resolving a security-scoped bookmark print("2 \(Thread.current)") // NSMainThread if let _ = resolveBookmark(bookmarkData: bookmarkItem.bookmarkData) { print("3 \(Thread.current)") // NSMainThread do { print("4 \(Thread.current)") // NSMainThread try await openDocument(at: bookmarkItem.bookmarkURL) print("5 \(Thread.current)") // NSMainThread } catch { print("\(error.localizedDescription)") } } } } } } Well, the application is on the main thread. I've checked every line before and after opening a document with its URL. Call what on the main thread? This is confusing. Thanks. class BookmarkViewModel: ObservableObject { @Published var bookmarkItems: [BookmarkItem] = [] var defaultFileManager: FileManager { return FileManager.default } var documentURL: URL? { ... } init() { fetchBookmarkItems() } func fetchBookmarkItems() { bookmarkItems.removeAll() if let documentURL { let bookmarkFolderURL = documentURL.appending(path: "MyApp").appending(path: "Bookmarks") do { let contents = try defaultFileManager.contentsOfDirectory(atPath: bookmarkFolderURL.path) for content in contents { ... let fileURL = bookmarkFolderURL.appending(path: content) let data = try Data(contentsOf: fileURL) let bookmarkItem = try JSONDecoder().decode(BookmarkItem.self, from: data) bookmarkItems.append(bookmarkItem) } } catch { print("Error fetching folder content: \(error.localizedDescription)") } } } } struct BookmarkItem: Codable, Hashable { let bookmarkURL: URL let date: Date let bookmarkData: Data let open: Bool }

I've been looking for a solution to configure the Apple TV remote(s) from the 5th generation and upwards. Some of the basic functionalities are disabling buttons on the physical remote control while maintaining proper functionality on remote controller apps on iOS devices. There seems to be a lack of relevant entitlements in that category, and without it I can't seem to figure out a way to make it work. Any ideas on the matter? Maybe a workaround that allows to configure the Apple TV to work with other remotes? Thank you in advance to anyone that put in thought to my query.

I'm looking for a reliable way to detect when the UIScreen of a UIView changes. I'm developing a renderer SDK that provides a custom UIView subclass which performs OpenGL / Metal rendering, driven by a CADisplayLink. To support scenarios like screen mirroring or external displays on iPad, I need to ensure the CADisplayLink is created using the correct UIScreen, so the refresh rate is accurate. Ideally, I’d like a way to be notified in the view itself (without requiring scene delegate integration) whenever self.window.windowScene.screen changes, even if trait values remain the same. Any ideas or workarounds that work safely in production would be hugely appreciated! Since iOS 13, the architecture is: The app can have multiple UIScene instances (typically UIWindowScene). Each UIWindowScene can have multiple UIWindows. Each UIWindow hosts a view hierarchy. To determine the correct UIScreen, I access self.window.windowScene.screen. If any component in that key path changes (window, windowScene, or screen), I need to detect it and react. Here’s what I’ve tried so far: Overriding willMoveToWindow: and didMoveToWindow: This allows me to detect changes to window, but if windowScene (of the window) or screen (of the scene) changes directly, I get no notification. Overriding traitCollectionDidChange: This works if the screen change causes a difference in traits (e.g., a different displayScale), but fails if the old and new screens share the same traits (e.g., identical scale). Listening to UIScene-related notifications Notifications like UISceneDidDisconnectNotification or UISceneWillEnterForegroundNotification only indicate scene lifecycle events, not that a particular view or window has moved to a different screen. Using KVO to observe self.window.windowScene.screen I found WebKit does something similar, but in practice this causes crashes. The error message suggests that "windowScene" is not KVO-compliant, and my experience confirms it's not safe in production. Apple's official guidance uses UIWindowSceneDelegate In this example, Apple shows how to update a CADisplayLink in a UIWindowSceneDelegate's windowScene:didUpdateCoordinateSpace:interfaceOrientation:traitCollection:. However, as an SDK provider delivering just a UIView, I don't have control over the host app's UIWindowSceneDelegate.