[Also submitted as FB21536505] When presenting a NavigationStack inside a .sheet, applying .tint(Color) does not affect the system back button on pushed destinations. The sheet’s close button adopts the tint, but the back chevron remains the default system color. REPRO Create a new iOS project and replace ContentView.swift with the code below. —or— Present a .sheet containing a NavigationStack. Apply .tint(.red) to the NavigationStack or sheet content. Push a destination using NavigationLink. EXPECTED The back button chevron adopts the provided tint color, consistent with other toolbar buttons and UIKit navigation behavior. ACTUAL The back button chevron remains the default system color. NOTES Reproduces consistently on: iOS 26.2 (23C54) iOS 26.3 (23D5089e) SCREEN RECORDING SAMPLE CODE import SwiftUI struct ContentView: View { @State private var isSheetPresented = false var body: some View { Button("Open Settings Sheet") { isSheetPresented = true } .sheet(isPresented: $isSheetPresented) { NavigationStack { List { NavigationLink("Push Detail") { DetailView() } } .navigationTitle("Settings") .navigationBarTitleDisplayMode(.inline) .toolbar { ToolbarItem(placement: .automatic) { Button("Close", systemImage: "xmark") { isSheetPresented = false } } } } .tint(.red) } } } private struct DetailView: View { var body: some View { List { Text("Detail View") } .navigationTitle("Detail") .navigationBarTitleDisplayMode(.inline) } }

When using UITraitBridgedEnvironmentKey to pass a trait value to the swift environment, it causes a crash when trying to access the value from the environment. The issue seems to be related to how swift uses the UITraitBridgedEnvironmentKey protocol since the crash occurs in swift::_getWitnessTable () from lazy protocol witness table accessor…. It can occur when calling any function that is generic using the UITraitBridgedEnvironmentKey type. I originally encountered the issue when trying to use a UITraitBridgedEnvironmentKey in SwiftUI, but have been able to reproduce the issue with any function with a similar signature. https://developer.apple.com/documentation/swiftui/environmentvalues/subscript(_:)-9zku Steps to Reproduce Requirements for the issue to occur Project with a minimum iOS version of iOS 16 Build the project with Xcode 26 Run on iOS 18 Add the following code to a project and call foo(key: MyCustomTraitKey.self) from anywhere. @available(iOS 17.0, *) func foo<K>(key: K.Type) where K: UITraitBridgedEnvironmentKey { // Crashes before this is called } @available(iOS 17.0, *) public enum MyCustomTraitKey: UITraitBridgedEnvironmentKey { public static let defaultValue: Bool = false public static func read(from traitCollection: UITraitCollection) -> Bool { false } public static func write(to mutableTraits: inout UIMutableTraits, value: Bool) {} } // The crash will occur when calling this. It can be added to a project anywhere // The sample project calls it from scene(_:willConnectTo:options:) foo(key: MyCustomTraitKey.self) For example, I added it to the SceneDelegate in a UIKit Project class SceneDelegate: UIResponder, UIWindowSceneDelegate { var window: UIWindow? func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) { if #available(iOS 17, *) { // The following line of code can be placed anywhere in a project, `SceneDelegate` is just a convenient place to put it to reproduce the issue. foo(key: MyCustomTraitKey.self) // ^ CRASH: Thread 1: EXC_BAD_ACCESS (code=1, address=0x10) } } } Actual Behaviour The app crashes with the stack trace showing the place calling foo but before foo is actually called. (ie, a breakpoint or print in foo is never hit) #0 0x000000019595fbc4 in swift::_getWitnessTable () #1 0x0000000104954128 in lazy protocol witness table accessor for type MyCustomTraitKey and conformance MyCustomTraitKey () #2 0x0000000104953bc4 in SceneDelegate.scene(_:willConnectTo:options:) at .../SceneDelegate.swift:20 The app does not crash when run on iOS 17, or 26 or when the minimum ios version is raised to iOS 17 or higher. It also doesn't crash on iOS 16 since it's not calling foo since UITraitBridgedEnvironmentKey was added in iOS 17. Expected behaviour The app should not crash. It should call foo on iOS 17, 18, and 26.

Running print operation on WKWebView I hit EXC_BREAKPOINT and there is all kinds of console spew that looks concerning: ERROR: The NSPrintOperation view's frame was not initialized properly before knowsPageRange: returned. (WKPrintingView) ** CGContextClipToRect: invalid context 0x0. If you want to see the backtrace, please set CG_CONTEXT_SHOW_BACKTRACE environmental variable.** WebContent[7743] networkd_settings_read_from_file Sandbox is preventing this process from reading networkd settings file at "/Library/Preferences/com.apple.networkd.plist", please add an exception. CRASHSTRING: XPC_ERROR_CONNECTION_INVALID from launchservicesd CRASHSTRING: rdar://problem/28724618 Process unable to create connection because the sandbox denied the right to lookup com.apple.coreservices.launchservicesd and so this process cannot talk to launchservicesd. WebContent[7921] The sandbox in this process does not allow access to RunningBoard. Safe to ignore all this?

I built this very simple example to demonstrate the issue im facing on iOS 26 when trying to use custom ToolbarItem element for .largeTitle. Code: struct ContentView: View { var body: some View { NavigationStack { Screen() .navigationTitle("First") .toolbar { ToolbarItem(placement: .largeTitle) { Text("First") .font(.largeTitle) .border(Color.black) } } .navigationDestination(for: Int.self) { integer in DestinationScreen(integer: integer) } } } } struct Screen: View { var body: some View { List { ForEach(1..<50) { index in NavigationLink(value: index) { Text(index.description) .font(.largeTitle) } } } } } struct DestinationScreen: View { let integer: Int var body: some View { HStack { Text(integer.description) .font(.largeTitle) Spacer() } .padding() .navigationTitle(integer.description) .toolbar { ToolbarItem(placement: .largeTitle) { Text(integer.description) .font(.largeTitle) .border(Color.black) } } } } As shown on the gif, when navigating between pages, titles are going to overlap for a short while. Other questions: Why is it required for .navigationTitle() to exist (empty string wouldn't work!) so that the ToolbarItem .largeTitle can render at all? If none is added, this ToolbarItem simply won't appear Why isn't the large title naturally aligning to the leading side? Apple doc. doesn't mention any of this behaviour as far as I know but in general these placement should replicate known established behaviours, and .largeTitle should be leading aligned. Another issue is shown on the image below. When using both .largeTitle and .title (to simulate the same behaviour of transition between large and inline title when scrolling), both will appear at the same time. The large title will disappear as you scroll down which is fine.

In the new iOS 26 design, the navigation bar and tab bar will have a dark gradient background. We found that the color of this gradient depends on the background color of the page. For example, in the following page, our background color is green, so the navigation bar and tab bar will change the gradient to green. Is there any way to change this gradient color? I tried .toolbarBackground(.hidden, for: .navigationBar), but does not work。 I tried .toolbarBackground(LinearGradient(colors: [.black.opacity(0.4), .black.opacity(0)], startPoint: .top, endPoint: .bottom), for: .navigationBar), but it looks like the default gradient is the superposition of the gradient I defined, not a replacement.

Let me ask the general question first, then explain the context... Each Tab of a TabView defines a separate View hierarchy. (I'm assuming that the root view of each Tab defines its own NavigationStack.) Since an @Environment is supposed to serve data to the child views in its view hierarchy, does this mean that it is possible to define Environments in each tab's root view with the same name (i.e. key) but different values? (I.e., I want a subview to access an environment value for the current view hierarchy without requiring that the subview have any knowledge of which hierarchy it is being called from.) The actual use case has to do with using @Environment in a tabbed application to inject a router in subviews. (Each Tab has its own NavigationStack and its own NavigationPath.) I have an @Observable router class which manages a NavigationPath.. The root view of each Tab in the application has its own instance of that router object (and hence, it's own NavigationPath). I want to inject that router into all of the subviews in each Tab's view hierarchy, so that I can use path-based navigation. My current implementation injects the router throughout the view hierarchies via constructor injection. This works, but is a real pain and includes a bunch of duplicate code. I would like to use @Environment injection instead, but this can only work if @Environment stores its EnvironmentValues on a per view-hierarchy (rather than a per-application) basis. So, can this approach work? what experience can you share concerting router-based navigation in a TabView-based app? Thanks.

DisplayRepresentation.Image(systemName:tintColor:symbolConfiguration:) no longer applies the provided tintColor reliably since iOS 18. Observed behavior by OS version: iOS 17: SF Symbol tint is applied consistently as expected. iOS 18: SF Symbol tint is inconsistent and sometimes appears with incorrect or seemingly random colors instead of the provided tintColor. iOS 26: SF Symbol is rendered without any tint (default monochrome), completely ignoring the provided tintColor. This appears to be a regression in how App Intents renders DisplayRepresentation.Image with tinting across OS versions. iOS17.5: iOS 18.6: iOS26: Code: import AppIntents import UIKit struct CategoryEntity: AppEntity, Hashable { var id: Category.ID var name: String var icon: Int? var color: Int? var parentCategoryName: String? init(from category: Category) { self.id = category.id self.name = category.name self.icon = category.icon self.color = category.parent?.color ?? category.color self.parentCategoryName = category.parent?.name } var displayRepresentation: DisplayRepresentation { DisplayRepresentation( title: "\(name)", subtitle: parentCategoryName.map { "\($0)" }, image: .init( systemName: Icon.sfSymbolName(from: icon), tintColor: ColorTag.from(color) ) ) } static let typeDisplayRepresentation: TypeDisplayRepresentation = "Category" static let defaultQuery = CategoryQuery() } [Documentation API] (https://developer.apple.com/documentation/appintents/displayrepresentation/image-swift.struct/init(systemname:tintcolor:symbolconfiguration:)-3snvy?changes=_5)

Hi everyone, I believe this should be a simple and expected default behavior in a real-world app, but I’m unable to make it work: I have a View (a screen/page in this case) that calls an endpoint using async/await. If the endpoint hasn’t finished, but I navigate forward to a DetailView, I want the endpoint to continue fetching data (i.e., inside the @StateObject ViewModel that the View owns). This way, when I go back, the View will have refreshed with the fetched data once it completes. If the endpoint hasn’t finished and I navigate back to the previous screen, I want it to be canceled, and the @StateObject ViewModel should be deinitialized. I can achieve 1 and 3 using the .task modifier, since it automatically cancels the asynchronous task when the view disappears: view .task { await vm.getData() } I can achieve 1 and 2 using a structured Task in the View (or in the ViewModel, its the same behavior), for example: .onFirstAppearOnly { Task { away vm.getData() } } onFirstAppearOnly is a custom modifier that I have for calling onAppear only once in view lifecycle. Just to clarify, I dont think that part is important for the purpose of the example My question is: How can I achieve all three behaviors? My minimum deployment target is iOS 15, and I’m using NavigationView + NavigationLink. However, I have also tried using NavigationStack + NavigationPath and still couldn’t get it to work. Any help would be much appreciated. Thank you!

Hello, I am experiencing an issue related to SFSafariViewController during App Store review, and I would like to ask whether this could be an OS-level behavior or a known issue. App context Our app supports iPhone only During App Review, the reviewer tested the app on an iPad The app was rejected because the keyboard did not appear Issue description The problematic screen presents a sign-up web page using SFSafariViewController When tapping the nickname input field: The keyboard area appears (the layout shifts as if the keyboard will be shown) However, the actual keyboard does not appear Reproducibility We tested this issue on our own physical devices and on iPad simulators with the same app configuration However, we are unable to reproduce the issue in either environment What we have checked The web page uses a standard HTML There is no custom keyboard handling or keyboard-related logic in the app The app simply presents SFSafariViewController with a URL Locale-related question The URL includes a locale parameter (e.g. LOCALE=US) Could the app’s locale, system language, or region settings affect keyboard behavior in SFSafariViewController? Is it possible that a specific locale or language configuration on iPad could cause the keyboard to fail to appear? Questions Is there any known issue or OS-level behavior where the keyboard may fail to appear in SFSafariViewController on iPad? Could this be related to: Locale / language / region settings iPad multitasking or keyboard modes External keyboard state Specific iPadOS versions Are there any recommended workarounds or defensive implementations for this scenario? Any insights or similar experiences would be greatly appreciated. Thank you.

I’m exploring macOS development, comparing Mac Catalyst apps vs native AppKit/SwiftUI apps. What are the main limitations of Catalyst today? In what scenarios is a native AppKit or SwiftUI app unavoidable? Any insights are much appreciated — I’m trying to understand when Catalyst is sufficient and when going native is worth the extra effort.

I have a program that installs an NSStatusItem button in the Menubar. It registers for both the right and left click events. Before Tahoe, clicking into the statusitem with the mouse at the very top of the menubar would also invoke the Action handler, be it a right or a left click. Now, with Tahoe, where the menubar height was changed from 24 to 30, left clicks at the top edge still trigger the Action event, but right clicks do not - they only work if moving the mouse a few pixels down. This is quite inconvenient - the idea of the menubar being at the edge of the screen was always that one can just push the mouse to the edge and then click to interact. Tahoe has broken this basic GUI concept now partially. And since left clicks still work, it suggests that I don't do anything wrong - the clicks are controlled by the framework, and I'm never asked to provide a frame in which the clicks shall be accepted. It's that Apple's code apparently now uses the smaller statusitem's bounds instead of the full menu bar height for hit-testing. Is that on purpose or a bug? And does someone know a work-around, i.e. can I hook into the click-handler at a deeper level and do the hit testing myself? I've tried adding a subview to the statusitem's window's contentView, but that also only reacts to clicks in the smaller area.

Anytime I launch a view that contains a textfield, as soon as it’s in focus the view dismisses, and I log this warning, I have tried everything I could think of and still no solution, anyone know a workaround to this? note: this happens both on simulator and physical devices -[rtiinputsystemclient remotetextinputsessionwithid:performinputoperation:] perform input operation requires a valid sessionid. input modality = keyboard, input operation = , custom infotype = uiemojisearchoperations

Hello Apple Developer Forum Community, I’ve got a problem with the display of my SwiftUI View, that is tested on my physical iPhone. It’s shown very small (Picture) and on the Xcode Canvas Simulator it get’s shown right. What is the problem with my code?

Is there any reason why the SwiftUI Image hasn’t a direct init(data: Data) like UIImage from UIKit? In my opinion it’s very unintuitive and expensive to create a UIImage in the first step to create a SwiftUI Image with Image(uiImage: UIImage) in the second step. In addition to that, this causes unnecessary UIKit imports. In my opinion this is a very obvious small in the API, so are there any reasons why it is what it is? Best regards

Are we allowed to use AI-generated images for our Swift Student Challenge Project? The instructions say that we can use third party content but must cite/credit it and be transparent about it. Are we allowed to do the same for AI-generated images? Will this dock points on creativity?

I have an iOS application that derives on UITextInput to enter text. I have also overridden pressesBegan() and pressesEnded() in order to have some extra keyboard management (auto-repeat, special actions for arrow keys, function keys...) That works well for single-character languages (most roman languages, such as English, French, etc). For multi-character languages (Chinese, Japanses, Korean, Hindi), I can detect that the keyboard has been set to that language, and switch back to the default version of pressesBegan(): if let keyboardLanguage = self.textInputMode?.primaryLanguage { if (keyboardLanguage.hasPrefix("hi") || keyboardLanguage.hasPrefix("zh") || keyboardLanguage.hasPrefix("ja") || keyboardLanguage.hasPrefix("ko")) { super.pressesBegan(presses, with: event) } } But that strategy fails with the Tiếng Việt Telex keyboard (for Vietnamese language input). The way that keyboard works (as you can see if you open a document in Pages) is that you type as you go: T-i-e-n-g V-i-e-t T-e-l-e-x and the system adds the relevant diacritics once you've finished a word, so typing "Tieng Viet Telex" gives you "Tiếng Việt Telex" on the screen. Is there any documentation on the inner workings of this specific keyboard? What should I do (or not do) in order to make my application compatible with Tiếng Việt Telex?

I’m developing an iOS app that integrates with CallKit. Starting from iOS 26, I’ve noticed that the system automatically presents a top banner / toast-style UI when a CallKit call becomes active (see attached screenshot). This UI appears to be fully managed by the system. On iOS versions prior to iOS 26, this UI did not appear under the same CallKit configuration. What I’ve observed The banner is displayed automatically by the system It appears at the top of the screen, similar to a toast or call status banner It is not a view created by my app I could not find any public API or CallKit configuration related to dismissing or controlling it My questions： Is this top banner an intended system behavior change in newer iOS versions? Is there any public API to dismiss, hide, or customize this UI? If not, is this UI considered non-dismissible by design? Any clarification on the expected behavior or recommended approach would be greatly appreciated.

Has anyone noticed that there are way too many bugs caused by the liquid glass issues? I'm noticing apple adding private layer classes between existing UI views to add glassy effect and no way to disable them. Some of these bugs have no way around without rewriting the code from. For example, search controller doesn't work anymore on iOS 26 but does work on iOS 18. The tab bar controller doesn't show at all on iOS 26 but does on iOS 18. I'm wondering if other people are facing the same issues.

My #1 crash report since iOS 26 is the following: 1 libobjc.A.dylib objc_exception_throw 2 Foundation -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] 3 UIKitCore -[UINavigationBar layoutSubviews] 4 UIKitCore UIView._layoutSubviewsWithObservationTracking() 5 UIKitCore @objc UIView._layoutSubviewsWithObservationTracking() Thread 0 9 libobjc.A.dylib objc_exception_throw 10 Foundation -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] 11 UIKitCore -[UINavigationBar layoutSubviews] 12 UIKitCore UIView._layoutSubviewsWithObservationTracking() 13 UIKitCore @objc UIView._layoutSubviewsWithObservationTracking() I tried many things, without success so far. It seemed related to the new view update with observation tracking: link to documentation Any lead on how I should investigate this? Many thanks in advance!!

Hello everybody. I need your help with configuring navigationItem properly. I want to use its appearance properties to configure how the navigation bar looks on per-screen basis without interacting with UINavigationBar directly (the API has been implemented for this specific use case, right?) What I'm confused about is that setting any appearance property resets back button image to the default chevron. What I do now: Inside my app delegate let navigationBarAppearance = UINavigationBar.appearance() navigationBarAppearance.backIndicatorImage = UIImage() navigationBarAppearance.backIndicatorTransitionMaskImage = UIImage() I do this to hide the default chevron to customize back button appearance on per-view-controller basis Then in my presenting view controller: override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "Root" navigationItem.backBarButtonItem = UIBarButtonItem( title: nil, image: nil, primaryAction: UIAction( title: "", image: UIImage(systemName: "square.and.arrow.up"), identifier: nil, discoverabilityTitle: nil, attributes: [], state: .on, handler: { [weak self] _ in self?.navigationController?.popViewController(animated: true) } ), menu: nil ) let appearance = UINavigationBarAppearance() appearance.configureWithTransparentBackground() appearance.backgroundColor = UIColor.red appearance.titleTextAttributes = [ .foregroundColor: UIColor.purple ] appearance.largeTitleTextAttributes = [ .foregroundColor: UIColor.purple ] navigationItem.standardAppearance = appearance navigationItem.compactAppearance = appearance navigationItem.scrollEdgeAppearance = appearance navigationItem.compactScrollEdgeAppearance = appearance } The colors are set up as expected, however the default chevron image appears on the next view controller next to square.and.arrow.up. If I don't touch navigation item appearance properties - only square.and.arrow.up is displayed, as I want, but obviously I loose all the customization. Can anyone please explain how to set things up properly? Thanks!