Explore the various UI frameworks available for building app interfaces. Discuss the use cases for different frameworks, share best practices, and get help with specific framework-related questions.

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CRASH: in _SFAutomaticPasswordInputViewController on iOS 26.2 Beta 1 (23C5027f)
The application crashes immediately when the system attempts to display the automatic password input view controller (_SFAutomaticPasswordInputViewController). This occurs during the login or password-filling process. OS Version: iOS 26.2 Beta 1 Build Number: (23C5027f) Fatal Exception: NSInvalidArgumentException *** -[__NSArrayM insertObject:atIndex:]: object cannot be nil
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217
Nov ’25
SwiftUI navigationTransition Regression on iOS 26 (Source View Disappears + Flicker/Misaligned Geometry)
Summary I’m experiencing two issues with SwiftUI’s navigationTransition(.zoom) on iOS 26.0 and 26.1 that break previously smooth transitions. These issues appear both on real devices and Simulator. The same code works correctly on iOS 18. Issue 1 - Source View Disappears After Drag-Dismiss When using .navigationTransition(.zoom(sourceID:..., in:...)), the source view disappears completely after the transition finishes. This only happens when the detail view is dismissed via drag (interactive dismiss). When the view is dismissed by tapping the back button, the source view remains visible as expected. Reproduced on: iOS 26.0, iOS 26.0.1 (17A400), iOS 26.1 (Simulator + physical device) Issue 2 — Flickering and Geometry Mismatch During Transition Compared to iOS 18 behavior, the outgoing view and incoming view no longer share consistent geometry. Current behavior on iOS 26: The disappearing view flickers during the drag-dismiss interaction. The source and destination views no longer align geometrically. Instead of smoothly morphing as in previous iOS versions, the two views briefly overlap incorrectly before applying the zoom animation. Expected (iOS 18) behavior: Matched geometry between source and destination. Smooth, stable zoom transition with no flickering. // // ContentView.swift // DummyTransition // // Created by Sasha Morozov on 12/11/25. // import SwiftUI struct RectItem: Identifiable, Hashable { let id: UUID = UUID() let title: String let color: Color } struct ContentView: View { @Namespace private var zoomNamespace private let items: [RectItem] = [ RectItem(title: "Red card", color: .red), RectItem(title: "Blue card", color: .blue), RectItem(title: "Green card", color: .green), RectItem(title: "Orange card", color: .orange) ] var body: some View { NavigationStack { ScrollView { VStack(spacing: 16) { ForEach(items) { item in NavigationLink { DetailView(item: item, namespace: zoomNamespace) .navigationTransition( .zoom(sourceID: item.id, in: zoomNamespace) ) } label: { RoundedRectangle(cornerRadius: 16) .fill(item.color.gradient) .frame(height: 120) .overlay( Text(item.title) .font(.headline) .foregroundStyle(.white) ) .padding(.horizontal, 16) .matchedTransitionSource(id: item.id, in: zoomNamespace) } .buttonStyle(.plain) } } .padding(.vertical, 20) } .navigationTitle("Cards") } } } struct DetailView: View { let item: RectItem let namespace: Namespace.ID var body: some View { ZStack { item.color Text(item.title) .font(.largeTitle.bold()) .foregroundStyle(.white) } .ignoresSafeArea() .navigationTitle("Detail") .navigationBarTitleDisplayMode(.inline) } } #Preview { ContentView() } Testing Environment MacBook Pro (2023, M2 Pro, 16 GB RAM) macOS 26.2 Beta (25C5031i) Xcode: Version 26.0.1 (17A400) Devices tested: Simulator (iOS 26.0 / 26.1) Physical device (iPhone 16) running iOS 26.1
Topic: UI Frameworks SubTopic: SwiftUI
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159
Nov ’25
how to scale Image?
I want to scale the Image. If my Image (or GIF) is 11x33 (width=3 and height=11) but I want the Image size be 220x660 and how to auto expand the pixel? the pixel (0,0) in my image will be a 20x20 with same color. which means the Image(which I want) will has a pixel(0,0) to (20,20) is the same color to the (0,0)
Topic: UI Frameworks SubTopic: UIKit Tags:
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64
Nov ’25
CarPlay: AVSpeechUtterance not speaking/playing audio in some cars
I am having an issue with the code that I posted below. I capture voice in my CarPlay app, then allow the user to have it read back to them using AVSpeechUtterance. This works fine on some cars, but many of my beta testers report no audio being played. I have also experienced this in a rental car where the audio was either too quiet or the audio didn't play. Does anyone see any issue with the code that I posted? This is for CarPlay specifically. class CarPlayTextToSpeechService: NSObject, ObservableObject, AVSpeechSynthesizerDelegate { private var speechSynthesizer = AVSpeechSynthesizer() static let shared = CarPlayTextToSpeechService() /// Completion callback private var completionCallback: (() -> Void)? override init() { super.init() speechSynthesizer.delegate = self } func configureAudioSession() { do { try AVAudioSession.sharedInstance().setCategory(.playback, mode: .voicePrompt, options: [.duckOthers, .interruptSpokenAudioAndMixWithOthers, .allowBluetoothHFP]) } catch { print("Failed to set audio session category: \(error.localizedDescription)") } } public func speak(_ text: String, completion: (() -> Void)? = nil) { self.configureAudioSession() // Store the completion callback self.completionCallback = completion Task(priority: .high) { let speechUtterance = AVSpeechUtterance(string: text) let langCode = Locale.preferredLocalLanguageCountryCode if langCode == "en-US" { speechUtterance.voice = AVSpeechSynthesisVoice(identifier: AVSpeechSynthesisVoiceIdentifierAlex) } else { speechUtterance.voice = AVSpeechSynthesisVoice(language: langCode) } try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation) speechSynthesizer.speak(speechUtterance) } } func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) { Task { stopSpeech() try AVAudioSession.sharedInstance().setActive(false) } // Call completion callback if available self.completionCallback?() self.completionCallback = nil } func stopSpeech() { speechSynthesizer.stopSpeaking(at: .immediate) } }
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Nov ’25
UITrackingElementWindowController related crash on iPadOS26.1
I have following code and made it invoke every time when a UIViewController presents another UIViewController through method swizzling. When I try to access the Password management app while input password, these code will be invoked and the presenting VC is instance of UITrackingElementWindowController. It will crash [presentingVC beginAppearanceTransition:NO animated:NO]; [presentingVC endAppearanceTransition];
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Nov ’25
Where to find appearance icons from System Settings ?
Hello. I am searching the appearance icons from System Settings to select Dark Mode, Light Mode or Auto. I am searching for the path (including file name) in Finder so that my app can use it no matter the macOS version. I will gladly include a screenshot of what I am looking for. (sorry for the french) I hope I will find an answer that will work out, as this is a personal project that I am most interested in to work for
Topic: UI Frameworks SubTopic: General
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Nov ’25
refreshable modifier causes misaligned button tap targets in ScrollView
I have a ScrollView with several Buttons and a .refreshable modifier. As soon as I pull to refresh and the refresh indicator appears, the tap targets no longer match the visible button positions. For example, tapping button A triggers button B’s action, as if the hit-testing region didn’t move along with the content. This only happens while the refresh indicator is shown. Before pulling to refresh, everything is correct and afterwards as well. Tested on iOS 18 and 26 (Xcode 16.4, Xcode 26). Here is a minimal reproducible example: import SwiftUI struct ContentView: View { var body: some View { ScrollView { VStack { Button("Button A") { print("A") } .buttonStyle(.borderedProminent) Button("Button B") { print("B") } .buttonStyle(.borderedProminent) Button("Button C") { print("C") } .buttonStyle(.borderedProminent) Button("Button D") { print("D") } .buttonStyle(.borderedProminent) Button("Button E") { print("E") } .buttonStyle(.borderedProminent) } .frame(maxWidth: .infinity) } .refreshable { try? await Task.sleep(for: .seconds(60)) } } }
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Nov ’25
[CBXpcConnection _sendBarrier] iOS26 App Crash or ANR
the app crashes about 10 seconds after it goes into the background libsystem_kernel.dylib semaphore_wait_trap 100% 45 dyld start + 7116 [0x1825fa000] 100% 44 xxxx main + 76 (main.m:38) [0x104c14000] 100% 43 UIKitCore UIApplicationMain + 336 [0x18ae57000] 100% 42 UIKitCore -[UIApplication _run] + 792 [0x18ae57000] 100% 41 GraphicsServices GSEventRunModal + 120 [0x224975000] 100% 40 CoreFoundation _CFRunLoopRunSpecificWithOptions + 532 [0x185569000] 100% 39 CoreFoundation __CFRunLoopRun + 820 [0x185569000] 100% 38 CoreFoundation __CFRunLoopDoSources0 + 232 [0x185569000] 100% 37 CoreFoundation __CFRunLoopDoSource0 + 172 [0x185569000] 100% 36 CoreFoundation __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 [0x185569000] 100% 35 BoardServices BSServiceMainRunLoopSourceHandler + 224 [0x19c8b0000] 100% 34 BoardServices __BSSERVICEMAINRUNLOOPQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 52 [0x19c8b0000] 100% 33 libdispatch.dylib _dispatch_block_invoke_direct + 284 [0x1bcf40000] 100% 32 libdispatch.dylib _dispatch_client_callout + 16 [0x1bcf40000] 100% 31 FrontBoardServices -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 168 [0x1a4d45000] 100% 30 FrontBoardServices __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2 + 96 [0x1a4d45000] 100% 29 FrontBoardServices __94-[FBSWorkspaceScenesClient _queue_updateScene:withSettings:diff:transitionContext:completion:]_block_invoke_2.cold.1 + 352 [0x1a4d45000] 100% 28 FrontBoardServices -[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:] + 708 [0x1a4d45000] 100% 27 FrontBoardServices -[FBSScene _callOutQueue_maybeCoalesceClientSettingsUpdates:] + 128 [0x1a4d45000] 100% 26 FrontBoardServices __76-[FBSScene updater:didUpdateSettings:withDiff:transitionContext:completion:]_block_invoke.129 + 380 [0x1a4d45000] 100% 25 UIKitCore -[UIApplicationSceneClientAgent scene:handleEvent:withCompletion:] + 336 [0x18ae57000] 100% 24 UIKitCore -[UIScene scene:didUpdateWithDiff:transitionContext:completion:] + 244 [0x18ae57000] 100% 23 UIKitCore -[UIScene _emitSceneSettingsUpdateResponseForCompletion:afterSceneUpdateWork:] + 208 [0x18ae57000] 100% 22 UIKitCore __64-[UIScene scene:didUpdateWithDiff:transitionContext:completion:]_block_invoke.218 + 616 [0x18ae57000] 100% 21 UIKitCore -[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:] + 316 [0x18ae57000] 100% 20 UIKitCore _UISceneSettingsDiffActionPerformChangesWithTransitionContextAndCompletion + 224 [0x18ae57000] 100% 19 UIKitCore +[BSAnimationSettings(UIKit) tryAnimatingWithSettings:fromCurrentState:actions:completion:] + 736 [0x18ae57000] 100% 18 UIKitCore __186-[_UIWindowSceneFBSSceneTransitionContextDrivenLifecycleSettingsDiffAction _performActionsForUIScene:withUpdatedFBSScene:settingsDiff:fromSettings:transitionContext:lifecycleActionType:]_block_invoke + 148 [0x18ae57000] 100% 17 UIKitCore -[_UISceneLifecycleMultiplexer uiScene:transitionedFromState:withTransitionContext:] + 244 [0x18ae57000] 100% 16 UIKitCore -[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:] + 608 [0x18ae57000] 100% 15 UIKitCore -[_UISceneLifecycleMultiplexer _performBlock:withApplicationOfDeactivationReasons:fromReasons:] + 212 [0x18ae57000] 100% 14 UIKitCore __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke + 252 [0x18ae57000] 100% 13 UIKitCore _UIScenePerformActionsWithLifecycleActionMask + 112 [0x18ae57000] 100% 12 UIKitCore __101-[_UISceneLifecycleMultiplexer _evalTransitionToSettings:fromSettings:forceExit:withTransitionStore:]_block_invoke_2 + 512 [0x18ae57000] 100% 11 UIKitCore -[UIApplication _applicationDidEnterBackground] + 136 [0x18ae57000] 100% 10 UIKitCore +[UIViewController _performWithoutDeferringTransitionsAllowingAnimation:actions:] + 140 [0x18ae57000] 100% 9 UIKitCore __47-[UIApplication _applicationDidEnterBackground]_block_invoke + 256 [0x18ae57000] 100% 8 Foundation -[NSNotificationCenter postNotificationName:object:userInfo:] + 92 [0x182c3d000] 100% 7 CoreFoundation _CFXNotificationPost + 736 [0x185569000] 100% 6 CoreFoundation _CFXRegistrationPost + 436 [0x185569000] 100% 5 CoreFoundation ___CFXRegistrationPost_block_invoke + 92 [0x185569000] 100% 4 CoreFoundation __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 148 [0x185569000] 100% 3 CoreBluetooth -[CBXpcConnection _sendBarrier] + 188 [0x1c2254000] 100% 2 libdispatch.dylib _dispatch_semaphore_wait_slow + 132 [0x1bcf40000] 100% 1 libdispatch.dylib _dispatch_sema4_wait + 28 [0x1bcf40000] 100% 0 libsystem_kernel.dylib semaphore_wait_trap + 8 [0x22d5b6000]
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100
Nov ’25
Reliable Alternative for Google Sign-In with AWS Cognito on iOS (React Native)
I’m developing a React Native application using AWS Cognito Hosted UI with Google Sign-In for authentication.My setup uses: React Native: 0.76.9 Library: react-native-app-auth version 8.0.3 Xcode Minimum Deployment Target: 13.4 The same implementation works perfectly on Android, but on iOS it behaves inconsistently. Here’s the issue: Login flow completes successfully. However, access tokens and ID tokens are often null or malformed on iOS. This results in 401 Invalid Token errors when calling backend APIs. I’ve also tried using react-native-inappbrowser-reborn, but the issue persists.I’m currently using both the client ID and reverse client ID correctly as callback URLs in Cognito’s configuration". So my questions are: "Is it better to continue using react-native-app-auth and @react-native-google-signin/google-signin with improved configuration for iOS? Or is there a more reliable approach/library for handling Cognito authentication and token management on iOS (especially for Hosted UI with Google Sign-In)? Looking forward to any suggestions or best practices from those who’ve implemented Cognito + Google Sign-In on iOS using React Native.If you’ve found a stable setup for managing tokens and callbacks on iOS, please share your approach". Thank you!
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Nov ’25
Drawing a PaperMarkup synchronously
The PaperMarkup class in PaperKit allows for an asynchronous function called .draw(in:, frame:) that we should call as: await paperMarkup.draw(in: context.cgContext, frame: rect) In PencilKit the PKDrawing that we can get from a PKCanvasView allows for .image(from: ,scale:) to be called synchronously. This allows me to easily render into a PKDrawing as a UIImage or a SwiftUI Image to, for example, render a thumbnail on screen. When trying to incorporate PaperKit in my project I noticed that I often need the drawing to be rendered synchronously (like I would with PKDrawing) but I can't find the way to accomplish this within PaperKit's current functionality. Is there any way to call .draw(...) in PaperKit synchronously? Feedback: FB20993683
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Nov ’25
Correctly initializing observable classes in modern SwiftUI
I have two @Observable manager classes, which share a reference to a third class. I initialize this setup using a custom init in my App struct, like so: @main struct MyApp: App { private let managerA: ManagerA private let managerB: ManagerB init() { let managerC = ManagerC() self.managerA = ManagerA(managerC: managerC) self.managerB = ManagerB(managerC: managerC) } var body: some Scene { WindowGroup { ContentView() .environment(managerA) .environment(managerB) } } } I've been using this pattern for some time and it has been working fine. However, I just today discovered that @Observable objects are supposed to be initialized as @State vars, as shown in Apple's documentation here. This means I shoud be doing the following: @main struct MyApp: App { @State private var managerA: ManagerA @State private var managerB: ManagerB init() { let managerC = ManagerC() self.managerA = ManagerA(managerC: managerC) self.managerB = ManagerB(managerC: managerC) } var body: some Scene { WindowGroup { ContentView() .environment(managerA) .environment(managerB) } } } I've also seen some examples where the @State vars are initialized manually like this: @main struct MyApp: App { @State private var managerA: ManagerA @State private var managerB: ManagerB init() { let managerC = ManagerC() let managerA = ManagerA(managerC: managerC) let managerB = ManagerB(managerC: managerC) self._managerA = State(initialValue: managerA) self._managerB = State(initialValue: managerB) } var body: some Scene { WindowGroup { ContentView() .environment(managerA) .environment(managerB) } } } ChatGPT tells me the third approach is the correct one, but I don't understand why and ChatGPT can't produce a convincing explanation. The compiler doesn't produce any errors or warnings under each approach, and as far as I can tell, they all behave identically with no discernible difference in performance. Does it matter which pattern I use? Is there a "correct" way?
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Nov ’25
Recommended approach for migrating to modern (iOS 16+) navigation
Hello all, my team and I are looking for some advice on updating our app from using NavigationView and NavigationLink to NavigationStack and .navigationDestination now that NavigationView is deprecated. A little background about our situation, our app is a mix of SwiftUI views and UIKit view controllers. We are slowly migrating towards primarily SwiftUI and we are at the point now where our main app entry point is SwiftUI. UIKit is now mainly just used for some legacy screens inside the app, but majority of our navigation is using SwiftUI with NavigationLinks. I have spent a couple weeks on trying to migrate to using NavigationStack + .navigationDestination, but every time I do I keep running into issues. From what I understand, there seems to be two competing approaches for modern navigation. Those two approaches are... Having a more global navigationDestination modifier defined at the root of each tab that essentially supports navigating to all pages. I have seen this referred to as a 'router'. Applying a navigationDestination modifier on each page that navigates somewhere. This seems to be more 1-to-1 port of how we are currently using NavigationLink. However, I tried implementing both of these solutions in our app and with both of them I ran into countless issues which made me second guess the solution I was currently implementing in favor of the other. This has led to where I am now, where I am really unsure what the recommended approach is. I would love to hear from you all, what you have had the most success with. I am interested to hear what approach you chose, why you chose that, and then also some downsides to the approach you chose. Thanks in advance.
Topic: UI Frameworks SubTopic: SwiftUI
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66
Nov ’25
NavigationSplitView and NavigationStack persistence
Let's say you have a NavigationModel that contains three NavigationPaths, one for each option in the sidebar for a NavigationSplitView. This NavigationModel is created by the App and passed down to the root view for the scene in its environment. Each option has a separate NavigationStack and is passed a binding to the appropriate NavigationPath from the NavigationModel. Is it expected that when the user changes the selection in the sidebar, the NavigationPath for the newly selected view should be erased? This is what's currently happening on macOS 26. It seems like the default action when creating a NavigationStack and passing it a binding to a NavigationPath is to clear that path and start from the root view. Is this normal, intended behaviour or is it a bug? Or, perhaps, an option or modifier I am missing?
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215
Nov ’25
`NewDocumentButton(contentType:)` gives "Content serialization failed, document won't be saved."
I'm working on an iOS document-based app. It uses ReferenceFileDocument and custom creation of documents via DocumentGroupLaunchScene + NewDocumentButton. It works fine when I use the plain NewDocumentButton("Whatever") (without any more arguments), but when I want to perform additional setup via preapreDocumentURL or even just add a contentType it gives such output in the console when I hit it: Content serialization failed, document won't be saved. UTType.replayable is correctly wired up in the plist. It looks like a bug in the SDK, but maybe there is a chance that I'm doing something wrong? Here's a code: import SwiftUI import UniformTypeIdentifiers import Combine @main struct MyApp: App { var body: some Scene { DocumentGroup { Document() } editor: { documentConfiguration in EmptyView() } DocumentGroupLaunchScene("Yoyo") { NewDocumentButton(contentType: .replayable) { return URL(string: "whatever, it doesnt even go there...")! } } } } final class Document: ReferenceFileDocument { static var readableContentTypes: [UTType] { [.replayable] } @Published var x = 0 init() {} init(configuration: ReadConfiguration) throws {} func snapshot(contentType: UTType) throws -> Data { Data() } func fileWrapper(snapshot: Data, configuration: WriteConfiguration) throws -> FileWrapper { .init(regularFileWithContents: snapshot) } } extension UTType { static var replayable: UTType { UTType(exportedAs: "com.whatever.yo") } }
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81
Nov ’25
How are callbacks supposed to be passed to a UIContentView?
From what I understand, you’re meant to pass information like a view model to a content view through its configuration state. What about callbacks (e.g. something like didClickButton)? They aren’t “inputs” into the content configuration like a view model would be, but it feels odd to create and apply a content configuration only to specify callbacks and nothing else.
Topic: UI Frameworks SubTopic: UIKit Tags:
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74
Nov ’25
UITrackingElementWindowController crash when viewDidDisappear on iPadOS26.1
hello, I have been receiving crash reports on iPadOS 26.1, When UITrackingElementWindowController viewDidDisappear The feedback associated with this post is: FB20986398 and Exception Exception 'Cannot remove an observer <PKTextEffectsWindowObserver 0x10854cbe0> for the key path "frame" from <UITextEffectsWindow 0x10827ca00> because it is not registered as an observer.' #1 0x0000000183529814 in objc_exception_throw () #2 0x00000001845065a4 in -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] () #3 0x00000001845069c8 in -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] () #4 0x00000001845068e0 in -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:context:] () #5 0x00000001cb22e894 in -[PKTextEffectsWindowObserver dealloc] () #6 0x000000018beafb28 in _setInteractionView () #7 0x000000018d81e8b8 in -[UIView(Dragging) removeInteraction:] () #8 0x00000001cb216448 in -[PKTextInputInteraction willMoveToView:] () #9 0x000000018beafb1c in _setInteractionView () #10 0x000000018d81e8b8 in -[UIView(Dragging) removeInteraction:] () #11 0x000000018d5ab094 in -[UIEditingOverlayViewController _removeInteractions] () #12 0x000000018cb166a8 in -[UIViewController _setViewAppearState:isAnimating:] () #13 0x000000018cb16d70 in __52-[UIViewController _setViewAppearState:isAnimating:]_block_invoke_2 () #14 0x000000018cb16c10 in __52-[UIViewController _setViewAppearState:isAnimating:]_block_invoke () #15 0x000000018655ef78 in __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ () #16 0x00000001866b4a24 in -[__NSArrayI enumerateObjectsWithOptions:usingBlock:] () #17 0x000000018cb16a44 in -[UIViewController _setViewAppearState:isAnimating:] () #18 0x000000018cb1753c in -[UIViewController __viewDidDisappear:] () #19 0x000000018cb17638 in -[UIViewController _endAppearanceTransition:] () #20 0x000000018ca2401c in __48-[UIPresentationController transitionDidFinish:]_block_invoke () #21 0x000000018ca23cd0 in -[UIPresentationController transitionDidFinish:] () #22 0x000000018ca2d720 in -[_UICurrentContextPresentationController transitionDidFinish:] () #23 0x000000018ca27608 in __77-[UIPresentationController runTransitionForCurrentStateAnimated:handoffData:]_block_invoke.106 () #24 0x000000018cb31fec in -[_UIViewControllerTransitionContext completeTransition:] () #25 0x000000018d7f09bc in -[UITransitionView notifyDidCompleteTransition:] () #26 0x000000018d7f0750 in -[UITransitionView _didCompleteTransition:] () #27 0x000000018bf1c2a4 in __UIVIEW_IS_EXECUTING_ANIMATION_COMPLETION_BLOCK__ () #28 0x000000018d817960 in -[UIViewAnimationBlockDelegate _didEndBlockAnimation:finished:context:] () #29 0x000000018d7f7168 in -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] () #30 0x000000018d7f75cc in -[UIViewAnimationState animationDidStop:finished:] () #31 0x000000018d7f763c in -[UIViewAnimationState animationDidStop:finished:] () #32 0x0000000186fedda4 in run_animation_callbacks () #33 0x000000010365e2d0 in _dispatch_client_callout () #34 0x000000010367f4c0 in _dispatch_main_queue_drain.cold.5 () #35 0x0000000103654778 in _dispatch_main_queue_drain () #36 0x00000001036546b4 in _dispatch_main_queue_callback_4CF () #37 0x00000001865b42c8 in __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ () #38 0x0000000186567b3c in __CFRunLoopRun () #39 0x0000000186566a6c in _CFRunLoopRunSpecificWithOptions () #40 0x0000000226ee5498 in GSEventRunModal () #41 0x000000018bf2aba4 in -[UIApplication _run] () #42 0x000000018bed3a78 in UIApplicationMain ()
Topic: UI Frameworks SubTopic: UIKit Tags:
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134
Nov ’25
WatchOS version lower than deployment target in Xcode 26
Description: I’m encountering an issue where the Apple Watch’s watchOS version is lower than the deployment target specified in my Xcode project. For example, my Watch device is running watchOS 10.6, but my app’s deployment target is set to watchOS 9.6 or 10.6, and Xcode shows an error stating: Error: “watchOS version doesn’t match the app’s deployment target.” Could someone clarify how to properly handle this version mismatch? Environment: Xcode 26 iPhone: iOS 18 Apple Watch: watchOS 10.6 Any guidance or best practices would be appreciated.
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307
Nov ’25
Crash in UIKeyboardStateManager when repeatedly switching text input focus in WKWebView (hybrid app)
We’re building a hybrid iOS app using Angular (web) rendered inside a WKWebView, hosted by a native Swift app. Recently, we encountered a crash related to UIKeyboardStateManager in UIKit when switching between text inputs continuously within an Angular screen. Scenario The screen contains several text input fields. A “Next” button focuses the next input field programmatically. After about 61 continuous input field changes, the app crashes. It seems like this may be related to UIKit’s internal keyboard management while switching focus rapidly inside a WebView. crash stack: Crashed: com.apple.main-thread 0 WebKit 0xfbdad0 <redacted> + 236 1 UIKitCore 0x10b0548 -[UITextInteractionSelectableInputDelegate _moveToStartOfLine:withHistory:] + 96 2 UIKitCore 0xd0fb38 -[UIKBInputDelegateManager _moveToStartOfLine:withHistory:] + 188 3 UIKitCore 0xa16174 __158-[_UIKeyboardStateManager handleMoveCursorToStartOfLine:beforePublicKeyCommands:testOnly:savedHistory:force:canHandleSelectableInputDelegateCommand:keyEvent:]_block_invoke + 52 4 UIKitCore 0xa36ae4 -[_UIKeyboardStateManager performBlockWithTextInputChangesIgnoredForNonMacOS:] + 48 5 UIKitCore 0xa160f0 -[_UIKeyboardStateManager handleMoveCursorToStartOfLine:beforePublicKeyCommands:testOnly:savedHistory:force:canHandleSelectableInputDelegateCommand:keyEvent:] + 440 6 UIKitCore 0xa07010 -[_UIKeyboardStateManager handleKeyCommand:repeatOkay:options:] + 5760 7 UIKitCore 0xa2fb64 -[_UIKeyboardStateManager _handleKeyCommandCommon:options:] + 76 8 UIKitCore 0xa2fb08 -[_UIKeyboardStateManager _handleKeyCommand:] + 20 9 UIKitCore 0xa30684 -[_UIKeyboardStateManager handleKeyEvent:executionContext:] + 2464 10 UIKitCore 0xa2f95c __42-[_UIKeyboardStateManager handleKeyEvent:]_block_invoke + 40 11 UIKitCore 0x4b9460 -[UIKeyboardTaskEntry execute:] + 208 12 UIKitCore 0x4b92f4 -[UIKeyboardTaskQueue continueExecutionOnMainThread] + 356 13 UIKitCore 0x4b8be0 -[UIKeyboardTaskQueue addTask:breadcrumb:] + 120 14 UIKitCore 0x4a9ed0 -[_UIKeyboardStateManager _setupDelegate:delegateSame:hardwareKeyboardStateChanged:endingInputSessionIdentifier:force:delayEndInputSession:] + 3388 15 UIKitCore 0xfa290 -[_UIKeyboardStateManager setDelegate:force:delayEndInputSession:] + 628 16 UIKitCore 0xf617c -[UIKeyboardSceneDelegate _reloadInputViewsForKeyWindowSceneResponder:force:fromBecomeFirstResponder:] + 1140 17 UIKitCore 0xf5c88 -[UIKeyboardSceneDelegate _reloadInputViewsForResponder:force:fromBecomeFirstResponder:] + 88 18 UIKitCore 0x4fe4ac -[UIResponder(UIResponderInputViewAdditions) reloadInputViews] + 84 19 WebKit 0xfbe708 <redacted> + 100 20 WebKit 0xfbf594 <redacted> + 340 21 WebKit 0x8a33d8 <redacted> + 32 22 WebKit 0x8cee04 <redacted> + 144 23 WebKit 0x1c83f0 <redacted> + 22692 24 WebKit 0x73f40 <redacted> + 264 25 WebKit 0x162c7c <redacted> + 40 26 WebKit 0x1623b4 <redacted> + 1608 27 WebKit 0x73298 <redacted> + 268 28 WebKit 0x72e48 <redacted> + 660 29 JavaScriptCore 0xdb00 WTF::RunLoop::performWork() + 524 30 JavaScriptCore 0xd744 WTF::RunLoop::performWork(void*) + 36 31 CoreFoundation 0xf92c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 32 CoreFoundation 0xf744 __CFRunLoopDoSource0 + 172 33 CoreFoundation 0xf5a0 __CFRunLoopDoSources0 + 232 34 CoreFoundation 0xff20 __CFRunLoopRun + 840 35 CoreFoundation 0x11adc CFRunLoopRunSpecific + 572 36 GraphicsServices 0x1454 GSEventRunModal + 168 37 UIKitCore 0x135274 -[UIApplication _run] + 816 38 UIKitCore 0x100a28 UIApplicationMain + 336 39 APP1 0xa2ed0 main + 21 (AppDelegate.swift:21) 40 ??? 0x1aa889f08 (シンボルが不足しています) From reviewing the crash log, it appears that the crash occurs inside UIKeyboardStateManager while handling keyboard or cursor updates. Questions Has anyone seen this specific crash pattern involving UIKeyboardStateManager? Are there known UIKit or WebKit bugs related to UIKeyboardStateManager when continuously changing focus between text fields (especially in WKWebView)? Any insights or workarounds would be greatly appreciated. Thanks!
0
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100
Nov ’25
Crash on _UIButtonBarItemLayout _updateItemView
With iOS 26.1 and beta 26.2, there is a crash seen for _UIButtonBarItemLayout update. Has anyone experienced this crash or has any information on this Thread 0 name: Thread 0 Crashed: 0 libobjc.A.dylib 0x000000019daa144c objc_retain + 16 1 UIKitCore 0x00000001a680b184 -[_UIButtonBarItemLayout _updateItemView] + 360 2 UIKitCore 0x00000001a6d5ddcc -[_UIButtonBarItemLayout minimumLayoutWidthGivenMinimumSpaceWidth:] + 28 3 UIKitCore 0x00000001a6d5eeec -[_UIButtonBarItemGroupLayout recalculateLayoutWidthsGivenItemSpaceWidth:] + 304 4 UIKitCore 0x00000001a6d4ca28 -[_UIButtonBar _widthInfoForLayout:] + 188 5 UIKitCore 0x00000001a68093b4 -[_UIButtonBar _layoutBar] + 108 6 UIKitCore 0x00000001a6809328 __42-[_UIButtonBarStackView updateConstraints]_block_invoke + 44 7 UIKitCore 0x00000001a7dbea8c +[UIView(Animation) performWithoutAnimation:] + 76 8 UIKitCore 0x00000001a68092d0 -[_UIButtonBarStackView updateConstraints] + 112 9 UIKitCore 0x00000001a64707e8 -[UIView(AdditionalLayoutSupport) _previousFittingSizeInfo] + 784 10 UIKitCore 0x00000001a6470508 -[UIView(AdditionalLayoutSupport) _previousFittingSizeInfo] + 48
Topic: UI Frameworks SubTopic: UIKit
3
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171
Nov ’25