Context: Xcode 16.4, Appkit In a windowController, I need to create and send a mouseDown event (newMouseDownEvent). I create the event with: let newMouseDownEvent = NSEvent.mouseEvent( with: .leftMouseDown, location: clickPoint, // all other fields I also need to make window key and front, otherwise the event is not handled.   func simulateMouseDown() { self.window?.makeFirstResponder(self.window) self.calepinFullView.perform(#selector(NSResponder.self.mouseDown(with:)), with: newMouseDownEvent!) }   As I have to delay the call( 0.5 s), I use asyncAfter: DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, qos: .userInteractive) { self.simulateMouseDown() }   It works as intended, but that generates the following (purple) warning at runtime: [Internal] Thread running at User-interactive quality-of-service class waiting on a lower QoS thread running at Default quality-of-service class. Investigate ways to avoid priority inversions I have tried several solutions, change qos in await: DispatchQueue.main.asyncAfter(deadline: .now() + 0.5, qos: ..default) call from a DispatchQueue let interactiveQueue = DispatchQueue.global(qos: .userInteractive) interactiveQueue.async { self.window?.makeFirstResponder(self.window) self.calepinFullView.perform(#selector(NSResponder.self.mouseDown(with:)), with: newMouseDownEvent!) } But that's worse, it crashes with the following error: FAULT: NSInternalInconsistencyException: -[HIRunLoopSemaphore wait:] has been invoked on a secondary thread; the problem is likely in a much shallower frame in the backtrace; { NSAssertFile = "HIRunLoop.mm"; NSAssertLine = 709; }   How to eliminate the priority inversion risk (not just silencing the warning) ?

Hi everyone, I’m running into a strange issue with UISearchController placement with iOS 26 SDK. In one of my view controllers, I was able to move the search bar to the top of the navigation bar by setting: navigationItem.searchController = searchController navigationItem.hidesSearchBarWhenScrolling = false navigationItem.preferredSearchBarPlacement = .stacked This works as expected — the search bar is placed at the top. However, in another view controller with almost identical configuration, the search bar always shows up at the bottom. If I delay the setup with DispatchQueue.main.async, it appears at the bottom; if I don’t, it doesn’t appear at all. Both VCs are wrapped in their own UINavigationController. So my questions are: Has anyone faced this issue where preferredSearchBarPlacement = .stacked is ignored? Are there hidden requirements or limitations for placing the search bar at the top? Why could the same setup behave differently in two controllers? Any help or ideas would be appreciated!

When you share a Url from any Google product, it creates a share.google minify Url. When iMessage fetch the Url meta headers, it receives the og:title, og:url, og:site_name, og:image. But it only show the preview card with og:image, og:title, and og:site_name, ignoring the value of og:description.

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.

When building in Xcode on MacOS Tahoe, it seems it is no longer possible to dynamically specify a "small" size toolbar for NSToolbar/NSToolbarItem. It works in MacOS code compiled and linked on earlier systems. I don't want to use "SFSymbol", or "templates". I have over 60 custom-made .png toolbars, in individual Image Set files, at the previous requisite sizes of 24x24 / 48x48, and 32x32 / 64x64. Sure -- I can configure an NSToolbar with whatever size .png assets I want. I just can't dynamically switch between the two groups of sizes. According to the Apple Coding Assistant, the only solution is to change the image names of each of the NSToolbarItems at runtime. OK -- but even when attempting that, the NSToolbarItems refuse to take on their smaller size... ...unless: they are attached to a custom view NSToolbarItem with an NSButton of style "Bevel". I have about 10 of those, and YES -- I CAN change those to a "small" size. Is this REALLY what I'm forced to do?! The Apple Coding Assistant just runs me around in circles, making coding suggestions that include properties that don't exists. I've gone around and around on these issues for over a week -- it can't be this hard, right? Is there no way to make multiple NSToolbar objects, one for "large" and one for "small"?

NSWindow objects with custom styleMask configurations seem to behave erratically in macOS Tahoe 26.3 RC. For example an NSWindow is not resizable after issuing .styleMask.remove(.titled) or some NSWindow-s become totally unresponsive (the NSWindow becomes transparent to mouse events) with custom styleMask-s. This is a radical change compared to how all previous macOS versions or the 26.3 beta3 worked and seriously affects apps that might use custom NSWindows - this includes some system utilities, OSD/HUD apps etc, actually breaking some apps. Such fundamental compatibility altering changes should not be introduced in an RC stage (if this is intentional and not a bug) imho.

Problem After launching the host app by tapping the widget (widgetURL), calls to: WidgetCenter.shared.reloadAllTimelines() WidgetCenter.shared.reloadTimelines(ofKind: ...) are ignored/deferred for an initial period right after the app opens. During this window, the widget does not reload its timeline and remains unupdated, no matter how many times I call the reload methods. After some time passes (typically ~30 seconds, sometimes shorter/longer), reload calls start working again. There is also no developer-visible signal (no callback/error/acknowledgement) that the reload was ignored, so the app can’t detect the failure and can’t reliably recover the flow. Question: Is this expected behavior (throttling/cooldown) after opening the app from a widget ? If so, is there any recommended workaround to update the widget reliably and quickly (or at least detect that the reload was not accepted)? Any guidance would help.

I've discovered an issue with using iOS 16's Transferable drag-and-drop APIs for SwiftUI. The dropDestination modifier does not work when applied to a subview of a List. This code below will not work, unless you replace the List with a VStack or any other container (which, of course, removes all list-specific rendering). The draggable modifier will still work and the item will drag, but the dropDestination view won't react to it and neither closure will be called. struct MyView: View { var body: some View { List { Section { Text("drag this title") .font(.largeTitle) .draggable("a title") } Section { Color.pink .frame(width: 400, height: 400) .dropDestination(for: String.self) { receivedTitles, location in true } isTargeted: { print($0) } } } } } Has anyone encountered this bug and perhaps found a workaround?

I have an app that records video (and also provides a custom remote interface) so it needs to remain awake and in the foreground. It sets; UIApplication.shared.isIdleTimerDisabled = true I've also tried catching willEnterForegroundNotification to ensure it resets it if the app is backgrounded and resumes; .onReceive( NotificationCenter.default.publisher( for: UIApplication.willEnterForegroundNotification) ) { _ in UIApplication.shared.isIdleTimerDisabled = true } However, it seems that on some devices it will still go to sleep. This seems to be the case when Adaptive Power Mode is on (or rather, I've not managed to reproduce it when Adaptive Power Mode is off) even when battery percentage is well over 20% (I sort of expected Low Power Mode to trigger this) Am I missing something obvious? there must be a way to make sure media capture apps stay awake (I'm surprised AVFoundation doesn't do it anyway!) If it is related to Adaptive Power Mode, is there any way to detect that programatically to at least provide a warning to the user that having it on will affect operation of the app?

The zoom navigation transition with matchedTransitionSource in tabViewBottomAccessory does not work when a Published var in an ObservableObjector Observable gets changed. Here is an minimal reproducible example with ObservableObject: import SwiftUI import Combine private final class ViewModel: ObservableObject { @Published var isPresented = false } struct ContentView: View { @Namespace private var namespace @StateObject private var viewModel = ViewModel() // @State private var isPresented = false var body: some View { TabView { Button { viewModel.isPresented = true } label: { Text("Start") } .tabItem { Image(systemName: "house") Text("Home") } Text("Search") .tabItem { Image(systemName: "magnifyingglass") Text("Search") } Text("Profile") .tabItem { Image(systemName: "person") Text("Profile") } } .sheet(isPresented: $viewModel.isPresented) { Text("Sheet") .presentationDragIndicator(.visible) .navigationTransition(.zoom(sourceID: "tabViewBottomAccessoryTransition", in: namespace)) } .tabViewBottomAccessory { Button { viewModel.isPresented = true } label: { Text("BottomAccessory") } .matchedTransitionSource(id: "tabViewBottomAccessoryTransition", in: namespace) } } } However, when using only a State property everything works: import SwiftUI import Combine private final class ViewModel: ObservableObject { @Published var isPresented = false } struct ContentView: View { @Namespace private var namespace // @StateObject private var viewModel = ViewModel() @State private var isPresented = false var body: some View { TabView { Button { isPresented = true } label: { Text("Start") } .tabItem { Image(systemName: "house") Text("Home") } Text("Search") .tabItem { Image(systemName: "magnifyingglass") Text("Search") } Text("Profile") .tabItem { Image(systemName: "person") Text("Profile") } } .sheet(isPresented: $isPresented) { Text("Sheet") .presentationDragIndicator(.visible) .navigationTransition(.zoom(sourceID: "tabViewBottomAccessoryTransition", in: namespace)) } .tabViewBottomAccessory { Button { isPresented = true } label: { Text("BottomAccessory") } .matchedTransitionSource(id: "tabViewBottomAccessoryTransition", in: namespace) } } }

UIHostingConfiguration on tvOS: focus permanently broken with multiple focusable SwiftUI views Hi everyone, I'm working on a tvOS app with a UICollectionView. Some cells embed SwiftUI content via UIHostingConfiguration, specifically a row of 3 buttons that should be individually focusable. The cell itself returns canBecomeFocused = false so focus passes through to the SwiftUI buttons. The problem: after navigating focus into that section once, it becomes permanently unfocusable. Focus enters briefly, then immediately exits to nil on its own, without any user input. From that point on, the focus engine completely skips the section. The exact same SwiftUI view works perfectly when embedded via UIHostingController instead. How to reproduce Press DOWN to move focus into the UIHostingConfiguration section Focus lands on a SwiftUI button for a split second Focus exits on its own and bumps to another section The section is now dead, focus skips it on every subsequent navigation What the system logs say (-UIFocusLoggingEnabled YES) Right when focus enters, the system reports the SwiftUI focus items as "disappearing": Ignoring focus update request for disappearing focus environment <UIKitFocusSectionResponderItem> Then when searching for a new focusable item: <SwiftUI._UIInheritedView> → (warning) No focusable items found. <UIHostingContentView> → (warning) No focusable items found. === unable to find focused item in context. retrying with updated request. === The views are still in the hierarchy (verified by pointer), but the UIHostingContentView no longer exposes its virtual focus items. I also see mismatched parentFocusEnvironment on those items, pointing to a _UIHostingView from a completely different cell. What I've tried I've spent a lot of time on this with my colleagues, dug through the very limited documentation available online, and even used AI agents to help brainstorm. We tested 10 different approaches, none worked: Overriding preferredFocusEnvironments to point to the UIHostingContentView setNeedsFocusUpdate() / updateFocusIfNeeded(), rescan finds nothing Forcing UIKit redraws (setNeedsLayout, setNeedsDisplay) Removing .focusSection() Removing all SwiftUI animations, identical behavior Using canFocusItemAt: delegate instead of cell subclass, identical remembersLastFocusedIndexPath = true, causes a separate focus trap configurationUpdateHandler + setNeedsUpdateConfiguration(), config is rebuilt but virtual items stay deregistered Verified the UIHostingContentView never leaves the hierarchy. It doesn't, its internal state is just corrupted My workaround I switched to UIHostingController with proper view controller containment. It works because the hosting controller is a full UIFocusEnvironment, so the focus engine can traverse it and it correctly maintains its virtual items. Has anyone encountered this? Is there a known pattern for using UIHostingConfiguration on tvOS with multiple focusable SwiftUI elements? Or should I just file a Feedback? Thanks for any help! You can find the code here : https://github.com/ThomasDutartre/focus-problem-tvos I recored the problem here : https://youtu.be/yPfM5AvU2ko

I need help designing the image of a ControlWidgetToggle. do I understand correctly that I can only use an SFSymbol as image and not my custom image (unless setup via a custom SFSymbol)? is there any way I can influence the size of the image? I tried multiple SwiftUI modifiers (.imageScale, .font, .resizable, .controlSize) none of them seem to work. My image remains too tiny the image size of the on and off state is different. Seems to be enforced by the system. Is there any way to make both images use the same size? the on-state tints the image. Is there a way to set the tint color? .tint and .foregroundstyle seem to be ignored. Thank you for your help

MacOS: Tahoe 26.3 Xcode: 26.3 RC1 Feedback: FB21937309 I have an app that is using nested NavigationSplitViews that was looking correct under Sequoia/Xcode 26.1 When I navigate down to the child element, the NavigationStack view has some odd leading space on it. Collapsing via the menu button properly sets the spacing to "0" as expected. My searches came up empty. Fixes were either partially correct, or just plain didn't work. AppSizeDetails.swift AppSizeDeltaDetails.swift

Any view that is content for the tabViewBottomAccessory API fails to retain its state as of the last couple of 26.1 betas (and RC). The loss of state happens (at least) when the currently selected tab is switched (filed as FB20901325). Here's code to reproduce the issue: struct ContentView: View { @State private var selectedTab = TabSelection.one enum TabSelection: Hashable { case one, two } var body: some View { TabView(selection: $selectedTab) { Tab("One", systemImage: "1.circle", value: .one) { BugExplanationView() } Tab("Two", systemImage: "2.circle", value: .two) { BugExplanationView() } } .tabViewBottomAccessory { AccessoryView() } } } struct AccessoryView: View { @State private var counter = 0 // This guy's state gets lost (as of iOS 26.1) var body: some View { Stepper("Counter: \(counter)", value: $counter) .padding(.horizontal) } } struct BugExplanationView: View { var body: some View { ScrollView { VStack(alignment: .leading, spacing: 16) { Text("(1) Manipulate the counter state") Text("(2) Then switch tabs") Text("BUG: The counter state gets unexpectedly reset!") } .multilineTextAlignment(.leading) } } }

UIHostingConfiguration on tvOS: focus permanently broken with multiple focusable SwiftUI views Hi everyone, I'm working on a tvOS app with a UICollectionView. Some cells embed SwiftUI content via UIHostingConfiguration, specifically a row of 3 buttons that should be individually focusable. The cell itself returns canBecomeFocused = false so focus passes through to the SwiftUI buttons. The problem: after navigating focus into that section once, it becomes permanently unfocusable. Focus enters briefly, then immediately exits to nil on its own, without any user input. From that point on, the focus engine completely skips the section. The exact same SwiftUI view works perfectly when embedded via UIHostingController instead. How to reproduce Press DOWN to move focus into the UIHostingConfiguration section Focus lands on a SwiftUI button for a split second Focus exits on its own and bumps to another section The section is now dead, focus skips it on every subsequent navigation What the system logs say (-UIFocusLoggingEnabled YES) Right when focus enters, the system reports the SwiftUI focus items as "disappearing": Ignoring focus update request for disappearing focus environment <UIKitFocusSectionResponderItem> Then when searching for a new focusable item: <SwiftUI._UIInheritedView> → (warning) No focusable items found. <UIHostingContentView> → (warning) No focusable items found. === unable to find focused item in context. retrying with updated request. === The views are still in the hierarchy (verified by pointer), but the UIHostingContentView no longer exposes its virtual focus items. I also see mismatched parentFocusEnvironment on those items, pointing to a _UIHostingView from a completely different cell. What I've tried I've spent a lot of time on this with my colleagues, dug through the very limited documentation available online, and even used AI agents to help brainstorm. We tested 10 different approaches, none worked: Overriding preferredFocusEnvironments to point to the UIHostingContentView setNeedsFocusUpdate() / updateFocusIfNeeded(), rescan finds nothing Forcing UIKit redraws (setNeedsLayout, setNeedsDisplay) Removing .focusSection() Removing all SwiftUI animations, identical behavior Using canFocusItemAt: delegate instead of cell subclass, identical remembersLastFocusedIndexPath = true, causes a separate focus trap configurationUpdateHandler + setNeedsUpdateConfiguration(), config is rebuilt but virtual items stay deregistered Verified the UIHostingContentView never leaves the hierarchy. It doesn't, its internal state is just corrupted My workaround I switched to UIHostingController with proper view controller containment. It works because the hosting controller is a full UIFocusEnvironment, so the focus engine can traverse it and it correctly maintains its virtual items. Has anyone encountered this? Is there a known pattern for using UIHostingConfiguration on tvOS with multiple focusable SwiftUI elements? Or should I just file a Feedback? Thanks for any help!

In my app i need to restrict the user to take screenshot or screen recording . i used the following code snippet, let field = UITextField() let view = UIView(frame: CGRect(x: 0, y: 0, width: field.frame.self.width, height: field.frame.self.height)) // Following view can be customised if required let newView = UIView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)) newView.backgroundColor = .black field.isSecureTextEntry = true window.addSubview(field) view.addSubview(newView) window.layer.superlayer?.addSublayer(field.layer) //field.layer.sublayers?.last!.addSublayer(window.layer) if let lastSublayer = field.layer.sublayers?.last { lastSublayer.addSublayer(window.layer) } field.leftView = view field.leftViewMode = .always My query is will below lines meet the Apple compliance? will ther be any rejection while publishing to Appstore? window.layer.superlayer?.addSublayer(field.layer) field.layer.sublayers?.last!.addSublayer(window.layer).

Since we started building our application on Tahoe, all NSPopupButtons in the UI stop truncating when the window they're in is moved to a different screen. Even though their frame is correct, if the selected item string is longer than what can fit, they just draw outside of their bounds, overlapping other neighbouring controls. This is reproducible only in our app target even though they are not subclassed or overridden in any way. The same window copied to a test app doesn't have the issue. Initially good After dragging to another screen Frame is correct in the View Hierarchy debugger, but the contents are incorrect. Very simple constraint setup, with content compression resistance set lower to allow resizing below the intrinsic content size. This is what happens on this simple test window. The rest of the popups in more complex windows are all bad right away, without requiring you to move them to a different screen. When built on Sequoia, all is well regardless of which OS the app is run on. Looking for ideas on how to troubleshoot this and figure out what's triggering it.

I have a very simple custom collection view layout that supports self-sizing. When a cell is selected, I expand the cell by modifying its constraints. This change (and the resulting effect on the collection view layout) is animated using [self.collectionView.collectionViewLayout invalidateLayout] followed by [self.collectionView layoutIfNeeded] within an animation closure. When you first tap on a cell, it expands smoothly as expected. When you tap on it again to contract it, however, its content jumps before it shrinks again. How can I fix this? For what it’s worth, I’ve noticed that neither UICollectionViewFlowLayout nor UICollectionViewCompositionalLayout have this issue, which suggests I’m doing self-sizing incorrectly. Here’s a screen recording demonstrating the issue. I’ve also put together a minimal sample project. I’m using Xcode 26.2 and iOS 26.2.1.

When I create a SwiftUI toolbar item with placement of .keyboard on iOS 26, the item appears directly on top of and in contact with the keyboard. This does not look good visually nor does it match the behavior seen in Apple's apps, such as Reminders. Adding padding to the contents of the toolbar item only expands the size of the item but does not separate the capsule background of the item from the keyboard. How can I add vertical padding or spacing to separate the toolbar item capsule from the keyboard?

When I use UIScrollView to Browse photos, sometime was crash. Issue Details: App: 美信 (Midea Connect) Problem: Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Feedback generator was deactivated by its client more times than it was activated: <_UIZoomEdgeFeedbackGenerator: 0x33527cdc0>' First throw call stack Affected: 4 user out of thousands iOS Version: 18.0.1、26.1、26.2 What Works: All other users has no crash Same iOS version, no issues User Has Tried: The user experienced two crashes after opening the page hundreds of times