When creating a default macOS document-based Xcode project and using the code below (and wiring the File menu's Print item to printDocument: instead of the default print:, which does nothing), opening the print panel causes PrintView.knowsPageRange(_:) to be called twice. Is this a bug? My app populates PrintView dynamically, and for large documents it can be quite inefficient to populate it once, only for the contents to be immediately discarded and populated again. A workaround that came to my mind would be to check if the print options have changed, though I'm not sure if it's a reliable indicator that the print preview is effectively the same. I created FB17018494. class Document: NSDocument { override func makeWindowControllers() { addWindowController(NSStoryboard(name: NSStoryboard.Name("Main"), bundle: nil).instantiateController(withIdentifier: NSStoryboard.SceneIdentifier("Document Window Controller")) as! NSWindowController) } override func printOperation(withSettings printSettings: [NSPrintInfo.AttributeKey : Any]) throws -> NSPrintOperation { return NSPrintOperation(view: PrintView(frame: CGRect(x: 0, y: 0, width: 100, height: 100)), printInfo: NSPrintInfo(dictionary: printSettings)) } } class PrintView: NSView { override func knowsPageRange(_ range: NSRangePointer) -> Bool { print("knowsPageRange") range.pointee = NSRange(location: 1, length: 1) return true } }

I have the MainView as the active view if the user is logged in(authenticated). the memory allocations when we run profile is pretty good. We have graphql fetching, we have token handling eg: This is All heap: 1 All Heap & Anonymous VM 13,90 MiB 65408 308557 99,10 MiB 373965 Ratio: %0.14, %0.86 After what i have checked this is pretty good for initialise and using multiple repositories eg. But when we change tabs: 1 All Heap & Anonymous VM 24,60 MiB 124651 543832 156,17 MiB 668483 Ratio: %0.07, %0.40 And that is not pretty good. So i guess we need to "kill" it or something. How? I have tried some techniques in a forum this was a recommended way: public struct LazyView<Content: View>: View { private let build: () -> Content @State private var isVisible = false public init(_ build: @escaping () -> Content) { self.build = build } public var body: some View { build() Group { if isVisible { build() } else { Color.clear } } .onAppear { isVisible = true } .onDisappear { isVisible = false } } } But this did not help at all. So under here is the one i use now. So pleace guide me for making this work. import DIKit import CoreKit import PresentationKit import DomainKit public struct MainView: View { @Injected((any MainViewModelProtocol).self) private var viewModel private var selectedTabBinding: Binding<MainTab> { Binding( get: { viewModel.selectedTab }, set: { viewModel.selectTab($0) } ) } public init() { // No additional setup needed } public var body: some View { NavigationStack(path: Binding( get: { viewModel.navigationPath }, set: { _ in } )) { TabView(selection: selectedTabBinding) { LazyView { FeedTabView() } .tabItem { Label("Feed", systemImage: "house") } .tag(MainTab.feed) LazyView { ChatTabView() } .tabItem { Label("Chat", systemImage: "message") } .tag(MainTab.chat) LazyView { JobsTabView() } .tabItem { Label("Jobs", systemImage: "briefcase") } .tag(MainTab.jobs) LazyView { ProfileTabView() } .tabItem { Label("Profile", systemImage: "person") } .tag(MainTab.profile) } .accentColor(.primary) .navigationDestination(for: MainNavigationDestination.self) { destination in switch destination { case .profile(let userId): Text("Profile for \(userId)") case .settings: Text("Settings") case .jobDetails(let id): Text("Job details for \(id)") case .chatThread(let id): Text("Chat thread \(id)") } } } } } import SwiftUI public struct LazyView<Content: View>: View { private let build: () -> Content public init(_ build: @escaping () -> Content) { self.build = build } public var body: some View { build() } }

https://developer.apple.com/documentation/mapkit/mkgeojsondecoder?changes=__9&language=objc I am trying to use this decoder to obtain single points form a geojson file. I am able to do this successfully however, when using MapKit for iOS 17+ I am unable to use a ForEach to iterate through these points (stored in an array) and display these on the map as a custom annotation or even a marker. MapAnnotation(coordinate: point.coordinate) { VStack { Image(systemName: "mappin.circle.fill") .resizable() .frame(width: 25, height: 25) .foregroundColor(.purple) if let title = point.title { Text(title) .font(.caption) .foregroundColor(.purple) .padding(2) .background(Color.white.opacity(0.8)) .cornerRadius(3) } } }

I want to truncate text from head with max 2 lines. I try the following code import SwiftUI struct ContentView: View { @State var content: String = "Hello world! wef wefwwfe wfewe weweffwefwwfwe wfwe" var body: some View { VStack { Text(content) .lineLimit(nil) .truncationMode(.head) .frame(height: 50) Button { content += content } label: { Text("Double") } .buttonStyle(.borderedProminent) } .frame(width: 200, height: 1000) .padding() } } #Preview { ContentView() } It show result like this, this is not what I want.

I'm trying to render a markdown with a link using Text. If the URL of the link is a static string, then no problem. If the URL is a property, then OpenURLAction gets a string ‘%25@’. I think this may be a bug. struct ContentView: View { let url = "https://www.google.com" var body: some View { Text("[Terms of Service](\(url))") .environment(\.openURL, OpenURLAction(handler: { url in print(url) return .handled })) } }

We've seen a spike in crashes on iOS 18.4 across both iPhone & iPad. We can't reproduce it, but it looks like it happens when the app goes into the background. Crash Log

I have a UITextField in my application, and I want to detect all the keys uniquely to perform all relevant task. However, there is some problem in cleanly identifying some of the keys. I m not able to identify the backspace key press in the textField(_:shouldChangeCharactersIn:replacementString:) method. Also I don't know how to detect the Caps Lock key. I am intending to so this because I want to perform some custom handling for some keys. Can someone help me with what is the way of detecting it under the recommendation from apple. Thanks in advance. Note: checking for replacementString parameter in shouldChangeCharactersIn method for empty does not help for backspace detection as it overlaps with other cases.

I have a few crash report from TestFlight with this context and nothing else. No symbols of my application. Crash report is attached. crashlog.crash It crashes at 16H25 (local time paris) and a few minutes after (8) I see the same user doing task in background (they download data with a particular URL in BGtasks) with a Delay that is consistant with a background wait of 5 or 7 minutes. I have no more information on this crash and by the way Xcode refuses to load it and shows an error. ( I did a report via Xcode for this).

Hello, I am encountering an issue with .refreshable(action:) in ScrollView. The refresh action works as expected when performing a pull-to-refresh. However, if I put the app in the background while the refresh operation is in progress, the refresh indicator remains visible on the screen when I return to the foreground and does not disappear. Once I interact with the ScrollView after returning to the foreground, the refresh indicator disappears, and the functionality itself is not affected. I initially attempted to resolve this issue by triggering a view redraw when scenePhase changes. However, since my app presents the SwiftUI view using UIHostingController, the scenePhase from the environment does not seem to function correctly. This issue occurs on iOS 17.1 but does not appear on iOS 16.1.1. Is there a known way to resolve this unexpected behavior? Below is a simplified sample code (some parts are omitted): struct MyView: View { @StateObject private var model: MyModel var body: some View { ScrollView { // My ContentViews... } .refreshable { do { try await self.model.refresh() } catch { // Handle error } } } } @MainActor final class MyModel: ObservableObject { // === Some Code === func refresh() async throws { let data = try await self.fetchData() self.data = Array(OrderedSet(data)) } } I apologize for any mistakes in my English, as I am using a translation tool. Thank you in advance for your help! Best regards,

Can the SwiftUI document architecture Take a file as read-only; never to be written out Take files too large for memory (multi-MB, or even GB) I wouldn't want the system to read a gigabyte size file into memory by default. If the system can use a memory-mapped Data as the representation, that'll be something I can make do. It would be even better if I could tell the system that I'll handle all the reading, all I need from it is a reference to the file's location on disk.

In a UIKit application, removing a view from the hierarchy is straightforward—we simply call myView.removeFromSuperview(). This not only removes myView from the UI but also deallocates any associated memory. Now that I'm transitioning to SwiftUI, I'm struggling to understand the recommended way to remove a view from the hierarchy, given SwiftUI's declarative nature. I understand that in SwiftUI, we declare everything that should be displayed. However, once a view is rendered, what is the correct way to remove it? Should all UI elements be conditionally controlled to determine whether they appear or not? Below is an example of how I’m currently handling this, but it doesn’t feel like the right approach for dynamically removing a view at runtime. Can someone guide me on the best way to remove views in SwiftUI? struct ContentView: View { @State private var isVisible = true var body: some View { VStack { if isVisible { // set this to false to remove TextView? Text("Hello, SwiftUI!") .padding() } Button("Toggle View") { ... } } } }

I was doing an app which had several "camera" buttons each one dedicated to taking/storing/reviewing/deleting an image associated with a variable URL but what should have been a simple no brainer turned out to be a programming nightmare. To cut a long story short there is a bug in the sheet handling wherebye even tho you have separate instance for each button the camera/picker cylcles sequentially thru the stack of instances for any action finally always placing the image in the first URL. Working with myself debugging, all major AIs (Grok, Claude, Gemini and Perplexity) after 4 x 12hr+ days we finally managed to crack a solution. What follows is Groks interpretation (note it misses the earlier problem of instance cycling!!) ... You can follow the discussion here: https://x.com/i/grok/share/KHeaUPladURmbFq5qy9W506er but be warned its long a detailed but if you are having problems then read ... **Bug Report: Race Conditions with UIImagePickerController in SwiftUI Sheet ** Environment: SwiftUI, iOS 17.7.5 Device: iPad Pro (12.9-inch, 2nd generation) Xcode Version: [Insert your Xcode version] Date: March 30, 2025 **Issue 1: Multiple Instances of UIImagePickerController Spawned After Dismissal ** Description: When using a UIImagePickerController wrapped in a UIViewControllerRepresentable and presented via a SwiftUI .sheet, selecting "Use Photo" resulted in multiple unintended instances of the picker being initialized and presented. The console logs showed repeated "Camera initialized" and "Camera sheet appeared" messages (e.g., multiple <UIImagePickerController: 0x...> instances) after the initial dismissal, despite the sheet being dismissed programmatically. Reproduction Steps: Create a SwiftUI view with a button that sets a @State variable showCamera to true. Present a UIImagePickerController via .sheet(isPresented: $showCamera). Update a @Binding variable (e.g., photoLocation: URL?) in imagePickerController(_:didFinishPickingMediaWithInfo:) after saving the image. Dismiss the picker with picker.dismiss(animated: true) and presentationMode.wrappedValue.dismiss(). Observe that updating the @Binding variable triggers a view re-render, causing the .sheet to re-present multiple times before finally staying dismissed. Root Cause: A race condition occurred between the view update (triggered by changing photoLocation) and the dismissal of the picker. During the re-render, showCamera remained true momentarily, causing the .sheet modifier to re-evaluate and spawn new picker instances before the onDismiss closure could reset showCamera to false. The fix involved delaying the @Binding update (photoLocation) until after the picker and sheet were fully dismissed, ensuring showCamera was reset to false before the view re-rendered: Introduced an onPhotoPicked: (URL) -> Void closure to decouple the photoLocation update from the dismissal timing. Modified the coordinator to call onPhotoPicked and reset showCamera before initiating dismissal:swift Issue 2: Single Unintended Picker Reopen After Initial Fix Description: After addressing the multiple-instance issue, a single unintended reopen of the picker persisted. The logs showed one additional "Camera initialized" and "Camera sheet appeared" after "Use Photo," before the final dismissal. Reproduction Steps: Reproduction Steps: Use the initial fix with onPhotoPicked and delayed photoLocation update. Take a photo and select "Use Photo." Observe one extra picker instance appearing briefly before dismissal completes. Root Cause: The @Binding update (photoLocation) was still occurring too early in the dismissal sequence. Although delayed until after picker.dismiss, the view re-render happened while showCamera was still true during the dismissal animation, causing the .sheet to re-present once before onDismiss reset showCamera. Resolution: The fix ensured showCamera was set to false before the picker dismissal animation began, preventing the .sheet from re-evaluating during the transition: Moved the dismissCamera() call (which sets showCamera to false) into the onPhotoPicked callback, executed before picker.dismiss: CameraView( photoLocation: $photoLocation, storeDirectory: storeDirectory, onPhotoPicked: { url in print("Photo picked callback for \(id), setting photoLocation: \(url)") self.photoLocation = url self.cameraState.dismissCamera() // Sets showCamera to false first } ) Kept the dismissal sequence in the coordinator: DispatchQueue.main.async { self.parent.onPhotoPicked(fileURL) picker.dismiss(animated: true) { self.parent.presentationMode.wrappedValue.dismiss() } } This synchronized the state change with the dismissal, ensuring showCamera was false before the view re-rendered, eliminating the single reopen. Request: Could the SwiftUI team clarify if this behavior is expected, or consider improving the .sheet modifier to better handle state transitions during UIKit controller dismissal? A more robust bridge between SwiftUI’s declarative state and UIKit’s imperative lifecycle could prevent such race conditions.

I have created an AppIntent and added it to shortcuts to be able to read by Siri. When I say the phrase, the Siri intent dialog appears just fine. I have added a custom SwiftUI View inside Siri dialog box with 2 buttons with intents. The callback or handling of those buttons is not working when initiated via Siri. It works fine when I initiate it in shortcuts. I tried using the UIButton without the intent action as well but it did not work. Here is the code. static let title: LocalizedStringResource = "My Custom Intent" static var openAppWhenRun: Bool = false @MainActor func perform() async throws -> some ShowsSnippetView & ProvidesDialog { return .result(dialog: "Here are the details of your order"), content: { OrderDetailsView() } } struct OrderDetailsView { var body: some View { HStack { if #available(iOS 17.0, *) { Button(intent: ModifyOrderIntent(), label : { Text("Modify Order") }) Button(intent: CancelOrderIntent(), label : { Text("Cancel Order") }) } } } } struct ModifyOrderIntent: AppIntent { static let title: LocalizedStringResource = "Modify Order" static var openAppWhenRun: Bool = true @MainActor func perform() async throws -> some OpensIntent { // performs the deeplinking to app to a certain page to modify the order } } struct CancelOrderIntent: AppIntent { static let title: LocalizedStringResource = "Cancel Order" static var openAppWhenRun: Bool = true @MainActor func perform() async throws -> some OpensIntent { // performs the deeplinking to app to a certain page to cancel the order } } Button(action: { if let url = URL(string: "myap://open-order") { UIApplication.shared.open(url) } }

Hi! I'm seeing some weird animation issues building the Food Truck sample application.^1 I'm running from macOS 15.4 and Xcode 16.3. I'm building the Food Truck application for macOS. I'm not focusing on iOS for now. The FoodTruckModel adds new Order values with an animation: // FoodTruckModel.swift withAnimation(.spring(response: 0.4, dampingFraction: 1)) { self.orders.append(orderGenerator.generateOrder(number: orders.count + 1, date: .now, generator: &generator)) } This then animates the OrdersTable when new Order values are added. Here is a small change to OrdersTable: // OrdersTable.swift - @State private var sortOrder = [KeyPathComparator(\Order.status, order: .reverse)] + @State private var sortOrder = [KeyPathComparator(\Order.creationDate, order: .reverse)] Running the app now inserts new Order values at the top. The problem is I seem to be seeing some weird animation issues here. It seems that as soon as the new Order comes in there is some kind of weird glitch where it appears as if part the animation is coming from the side instead of down from the top: What's then more weird is that if I seem to affect the state of the Table in any way then the next Order comes in with perfect animation. Scrolling the Table fixes the animation. Changing the creationData sort order from reverse to forward and back to reverse fixes the animation. Any ideas? Is there something about how the Food Truck product is built that would cause this to happen? Is this an underlying issue in the SwiftUI infra?

Hello Apple Developer Community, I’m experiencing an issue with my iOS app, "WaterReminder," where it builds successfully in Xcode 16.2 but crashes immediately upon launch in the iPhone 16 Pro Simulator running iOS 18.3.1. The crash is accompanied by a "Thread 1: signal SIGABRT" error, and the Xcode console logs indicate a dyld error related to XCTest.framework/XCTest not being loaded. I’ve tried several troubleshooting steps, but the issue persists, and I’d appreciate any guidance or insights from the community. Here are the details: Environment: Xcode Version: 16.2 Simulator: iPhone 16 Pro, iOS 18.3.1 App: WaterReminder (written in SwiftUI 6) Build Configuration: Debug Issue Description: The app builds without errors, but when I run it in the iPhone 16 Pro Simulator, it shows a white screen and crashes with a SIGABRT signal. The Xcode debugger highlights the issue in the main function or app delegate, and the console logs show the following error: dyld[7358]: Library not loaded: @rpath/XCTest.framework/XCTest Referenced from: <549B4D71-6B6A-314B-86BE-95035926310E> /Users/faytek/Library/Developer/CoreSimulator/Devices/2A51383F-D8EA-4750-AE22-4CDE745164CE/data/Containers/Bundle/Application/56D8B44F-6613-4756-89F0-CB33991F0821/WaterReminder.app/WaterReminder.debug.dylib Reason: tried: '/Users/faytek/Library/Developer/Xcode/DerivedData/WaterReminder-cahqrulxghamvyclxaozotzrbsiz/Build/Products/Debug-iphonesimulator/XCTest.framework/XCTest' (no such file), '/Users/faytek/Library/Developer/CoreSimulator/Devices/2A51383F-D8EA-4750-AE22-4CDE745164CE/data/Containers/Bundle/Application/56D8B44F-6613-4756-89F0-CB33991F0821/WaterReminder.app/Frameworks/XCTest.framework/XCTest' (no such file), '/Users/faytek/Library/Developer/CoreSimulator/Devices/2A51383F-D8EA-4750-AE22-4CDE745164CE/data/Containers/Bundle/Application/56D8B44F-6613-4756-89F0-CB33991F0821/WaterReminder.app/XCTest.framework/XCTest' (no such file), '/Users/faytek/Library/Developer/CoreSimulator/Devices/2A51383F-D8EA-4750-AE22-4CDE745164CE/data/Containers/Bundle/Application/56D8B44F-6613-4756-89F0-CB33991F0821/WaterReminder.app/Frameworks/XCTest.framework/XCTest' (no such file), '/Users/faytek/Library/Developer/CoreSimulator/Devices/2A51383F-D8EA-4750-AE22-4CDE745164CE/data/Containers/Bundle/Application/56D8B44F-6613-4756-89F0-CB33991F0821/WaterReminder.app/XCTest.framework/XCTest' (no such file), '/Users/faytek/Library/Developer/CoreSimulator/Devices/2A51383F-D8EA-4750-AE22-4CDE745164CE/data/Containers/Bundle/Application/56D8B44F-6613-4756-89F0-CB33991F0821/WaterReminder.app/Frameworks/XCTest.framework/XCTest' (no such file), '/Library/Developer/CoreSimulator/Volumes/iOS_22D8075/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS 18.3.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/XCTest.framework/XCTest' (no such file) What I’ve Tried: ◦ Verified that FBSnapshotTestCase is correctly added to the "Embed Frameworks" build phase. ◦ Confirmed that the Framework Search Paths in build settings point to the correct location. ◦ Ensured that all required frameworks are available in the dependencies folder. ◦ Cleaned the build folder (Shift + Option + Command + K) and rebuilt the project. ◦ Checked the target configuration to ensure XCTest.framework isn’t incorrectly linked to the main app target (it’s only in test targets). ◦ Updated Xcode and the iOS Simulator to the latest versions. ◦ Reset the simulator content and settings. Despite these steps, the app continues to crash with the same dyld error and SIGABRT signal. I suspect there might be an issue with how XCTest.framework is being referenced or loaded in the simulator, possibly related to using SwiftUI 6, but I’m unsure how to resolve it. Could anyone provide advice on why XCTest.framework is being referenced in my main app (since it’s not intentionally linked there) or suggest additional troubleshooting steps? I’d also appreciate any known issues or workarounds specific to Xcode 16.2, iOS 18.3.1, and SwiftUI 6. Thank you in advance for your help! Best regards, Faycel

Hello, the LocalizedStringKey does not work in the live activity. What do you suggest me to use in order to get localization in the live activity?

I have a NSRulerView with a vertical orientation. It works fine from macOS 10.13 to 11.x. In macOS Monterey (12.2.1 here), the ruler view is not receiving drawHashMarksAndLabelsInRect: messages when the associated NSTextView is scrolled vertically. When the parent NSScrollView is resized, the ruler view is correctly refreshed on all macOS versions. [Q] Is it a known bug in macOS Monterey?

After my XCode was upgraded to 16.2, the custom bottom tabbar of iPadAPP could not be displayed properly (I set "traitOverrides.horizontalSizeClass = .compact", otherwise the tabbar would be displayed at the top and it was not the style I wanted) Below are my code and pictures of the running effects of iOS17 and iOS18 override func viewDidLoad() { super.viewDidLoad() setValue(CustomTabBar(), forKey: "tabBar") if #available(iOS 18.0, *) { self.mode = .tabBar self.traitOverrides.horizontalSizeClass = .compact } } } class CustomTabBar: UITabBar { var leftView = UIView() var rightView = UIView() override func sizeThatFits(_ size: CGSize) -> CGSize { var sizeThatFits = super.sizeThatFits(size) sizeThatFits.height = 60 // 自定义高度 return sizeThatFits } override func layoutSubviews() { super.layoutSubviews() self.backgroundColor = .red addSubview(leftView) addSubview(rightView) leftView.backgroundColor = .green leftView.frame = CGRect(x: 10, y: 4, width: 80, height: 40) rightView.backgroundColor = .green rightView.frame = CGRect(x: 600, y: 4, width: 80, height: 40) } } ![]("https://developer.apple.com/forums/content/attachment/66988297-26dc-4b40-af37-103f6a277563" "title=20250409151648.jpg;width=2394;height=1716")

A document-based app that's been running fine on iPad and Mac Catalyst has stopped working on the Mac as of Sequoia 15.3. After the user selects a document to open, my app never gets called back from Apple's framework. (The app works fine on iPadOS.) Anybody else see this? I filed a feedback, FB16506048, several weeks ago but have had no reply.

Prime Objective I am trying to have a scroll view with a fixed header, a fixed footer, and a WKWebView in between. Using JavaScript, the height of the webView is determined and set to be large enough to hold the entire content. The Problem When selecting text on the webView, the view does not scroll when the edges are reached (this works if the webView is shown without being embedded in a Scroll view, or if it is the last element) What did I try? I tried reading the scroll view, or adding a gesture recognizer, but all of that does not work because the selection is essentially a system task Sourcecode Sourcecode to demonstrate the issue can be found on GitHub