I have a SwiftUI view that I have wrapped using UIHostingController for use within UIKit. Requirement: Within the UIKit environment, I want to get all the subviews of this SwiftUI view and determine whether the images within those subviews have finished loading. For UIKit views, we can use view.subviews to get all the subviews and do the check. However, for SwiftUI views, I found that the view.subviews turns out to be an empty array, making it impossible to do further checks. So the question is How can I get the subviews of a SwiftUI view?

I'm trying to use @Query in a wrapper view around a Button to keep a macOS menu command up to date but I keep getting Set a .modelContext in view's environment to use Query even though @Environment(\.modelContext) private var modelContext is part of the views.

Hi, I got a problem with severe hangs when I use code like this on tvOS 18.2 If I try to use HStack instead of LazyHStack inside the scrollview then the problem does not occur any more but then the scroll performance is compromised and the vertical scroll is no longer that smooth. Does someone has any experience with this? Is this SwiftUI problem or am I missing something? ScrollView { LazyVStack { ForEach(0...100, id: \.self) { _ in ScrollView { LazyHStack { ForEach(0...20, id: \.self) { _ in Color.red.frame(height: 300) } } } } } }

Hello, In my SwiftUI App i'm trying to create a custom UI trait and a matching bridged SwiftUI environment key. I want to override the environment key in a swift view and then have that reflect in the current UITraitCollection. I'm following the pattern in the linked video but am not seeing the changes reflect in the current trait collection when I update the swift env value. I can't find anything online that is helping. Does anyone know what I am missing? https://developer.apple.com/videos/play/wwdc2023/10057/ // Setup enum CustomTheme: String, Codable { case theme1 = “theme1”, theme2 = “theme2” } struct customThemeTrait: UITraitDefinition { static let defaultValue = brand.theme1 static let affectsColorAppearance = true static let identifier = "com.appName.customTheme" } extension UITraitCollection { var customTheme: CustomTheme { self[customThemeTrait.self] } } extension UIMutableTraits { var customTheme: CustomTheme { get { self[customThemeTrait.self] } set { self[customThemeTrait.self] = newValue } } } private struct customThemeKey: EnvironmentKey { static let defaultValue: CustomTheme = .theme1 } extension customThemeKey: UITraitBridgedEnvironmentKey { static func read(from traitCollection: UITraitCollection) -> CustomTheme { traitCollection.customTheme } static func write(to mutableTraits: inout UIMutableTraits, value: CustomTheme) { mutableTraits.customTheme = value } } extension EnvironmentValues { var customTheme: CustomTheme { get { self[customThemeKey.self] } set { self[customThemeKey.self] = newValue } } } // Attempted Usage extension Color { static func primaryBackground() -> Color { UITraitCollection.current.customTheme == .theme1 ? Color.red : Color.blue } } struct ContentView: View { @State private var theme = .theme1 var body: some View { if (dataHasLoaded && themeIsSet) { HomeView() .environment(\.customTheme, theme) } else { SelectThemeView( theme: self.theme, setContentThemeHandler) } } func setContentThemeHandler(theme: customTheme) { self.theme = theme } } struct HomeView() { @Environment(\.customTheme) private var currentTheme: customTheme var body: some View { VStack { Text("currentTheme: \(currentTheme.rawValue)") .background(Color.primaryBackground()) Text("currentUITrait: \(UITraitCollection.current.customTheme.rawValue)") .background(Color.primaryBackground()) } } } OUTCOME: After selecting theme2 in the theme selector view and navigating to the homeView, the background is still red and the env and trait values print the following: currentTheme: theme2 currentUITrait: theme1 Can anyone help me identify what I am missing?

In SwiftUI for macOS, how can I hide the tab bar when using TabView? I would like to provide my own tab bar implementation. In AppKit's NSTabViewController, we can do the following: let tabViewController = NSTabViewController() tabViewController.tabStyle = .unspecified I've come across various posts that suggest using the .toolbar modifier, but none appear to work on macOS (or at least I haven't found the right implementation). struct ContentView: View { var body: some View { TabView { // ... content } <- which view modifier hides the tab bar? } } Latest macOS, Latest Xcode

Hi, I'm working on RealityView and I have two entities in RCP. In order to set views for both entities, I have to create two separate attachments for each entity. What I want to achieve is that when I hover (by eye) on one entity's attachment, it would trigger the hover effect of the other entity's attachment. I try to use the hoverEffectGroup, but it would only activate the hover effect in a subview, instead a complete separate view. I refer to the following WWDC instruction for the hover effect. https://developer.apple.com/videos/play/wwdc2024/10152/

For now, my app name length is more than 20 characters, so the iPhone app name displays without a space, and uses the range operator to ensure showing the rest in the next line. Is it possible to show space and name with 2 lines?

The SwiftUI ScrollView lacks some features I need and so I created a custom MyScrollView based on UIScrollView wrapped within a UIViewControllerRepresentable. While this works fine in general I know came across a very strange problem: When MyScrollView is used in a sheet and its content touches bottom SafeArea, the UI freezes as soon as the should be displayed. The code below shows the problem as well in preview as on the simulator and on devices. Please note that the code is tuned do the display size of an iPhone 16 Pro. When running on different devices one might need to adjust height of the Color.yellow. In the demo code the UI freezes if the Color.yellow has a height between 738 to 771 pixels. Every other height is fine. Is there something wrong with my implementation of MyScrollView? When using ScrollView instead, everything works fine. Code: struct ContentView: View { @State private var showSheet: Bool = false var body: some View { ZStack { Button("Show Sheet") { showSheet = true } } .sheet(isPresented: $showSheet) { VStack { Text("Some Header Content") MyScrollView { VStack { Color.yellow //.frame(height: 737) // works .frame(height: 738) // does NOT works // ... //.frame(height: 771) // does NOT works //.frame(height: 772) // works } } .ignoresSafeArea() } } } } struct MyScrollView<Content: View>: UIViewControllerRepresentable { let content: Content init(@ViewBuilder content: () -> Content) { self.content = content() } func makeUIViewController(context: Context) -> UIViewController { let scrollViewVC = UIViewController() scrollViewVC.view.backgroundColor = .clear let scrollView = UIScrollView() scrollView.backgroundColor = .clear let contentVC = UIHostingController(rootView: self.content) contentVC.view.backgroundColor = .clear context.coordinator.contentVC = contentVC context.coordinator.scrollView = scrollView scrollView.translatesAutoresizingMaskIntoConstraints = false scrollViewVC.view.addSubview(scrollView) NSLayoutConstraint.activate([ scrollView.topAnchor.constraint(equalTo: scrollViewVC.view.topAnchor), scrollView.bottomAnchor.constraint(equalTo: scrollViewVC.view.bottomAnchor), scrollView.leadingAnchor.constraint(equalTo: scrollViewVC.view.leadingAnchor), scrollView.trailingAnchor.constraint(equalTo: scrollViewVC.view.trailingAnchor) ]) contentVC.willMove(toParent: scrollViewVC) scrollViewVC.addChild(contentVC) contentVC.view.translatesAutoresizingMaskIntoConstraints = false scrollView.addSubview(contentVC.view) NSLayoutConstraint.activate([ contentVC.view.topAnchor.constraint(equalTo: scrollView.contentLayoutGuide.topAnchor), contentVC.view.bottomAnchor.constraint(equalTo: scrollView.contentLayoutGuide.bottomAnchor), contentVC.view.leadingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.leadingAnchor), contentVC.view.trailingAnchor.constraint(equalTo: scrollView.contentLayoutGuide.trailingAnchor), contentVC.view.widthAnchor.constraint(equalTo: scrollView.frameLayoutGuide.widthAnchor) ]) contentVC.didMove(toParent: scrollViewVC) return scrollViewVC } func updateUIViewController(_ uiViewController: UIViewController, context: Context) { context.coordinator.contentVC?.rootView = content } func makeCoordinator() -> Coordinator { return Coordinator() } class Coordinator { var contentVC: UIHostingController<Content>? var scrollView: UIScrollView? init() { //... } } } #Preview { ContentView() }

I am trying to add custom scheme (CFBundleURLSchemes) to my App Clip. I launch the app clip via TestFlight to cache it to the device then i try to access the custom scheme URL to launch App Clip but nothing happened. May I know if it is something I did wrongly or just App Clip does not support Custom Scheme?

DESCRIPTION OF PROBLEM We need to add an implementation that will have the same swipe/scroll behavior as the Apple Translator extension, here is the code that we are currently using: import SwiftUI import TranslationUIProvider @main class TranslationProviderExtension: TranslationUIProviderExtension { required init() {} var body: some TranslationUIProviderExtensionScene { TranslationUIProviderSelectedTextScene { context in VStack { TranslationProviderView(context: context) } } } } struct TranslationProviderView: View { @State var context: TranslationUIProviderContext init(context c: TranslationUIProviderContext) { context = c } var body: some View { ScrollableSheetView() } } struct ScrollableSheetView: View { var body: some View { ScrollView { VStack(spacing: 20) { ForEach(0..<50) { index in Text("Item (index)") .padding() .frame(maxWidth: .infinity) .background(Color.blue.opacity(0.1)) .cornerRadius(8) } } .padding() } .padding() } } Using this code, on the first extension run, swipe up will expand the extension (which is OK) but swiping down on the expanded state of the extension works only as a scroll instead of swiping the extension from expanded mode back to compact mode. STEPS TO REPRODUCE Select a text in Safari Tap on Translate in the contextual menu Swipe up on the text ->the extension expands into full mode Swipe down->only scrolls work, I cannot swipe the extension from full mode to compact mode. Expected behavior: when i swipe down on the expanded extension, the extension should get into compact mode, not continuously scroll down.

The badge is cut if it's assigned to the last item. Is it a known issue? Thank you.

Hi Apple team and community, We’re encountering a strange issue with Live Activity that seems related to memory management or background lifecycle. ❓ Issue: Our app updates a Live Activity regularly (every 3 minutes) using .update(...). However, after the app remains in the background for around 8 hours, the Live Activity reverts to the initial state that was passed into .request(...). Even though the app continues sending updates in the background, the UI on the Lock Screen and Dynamic Island resets to the original state.

I have a question about the app lifecycle when my app is launched via a Shortcut. I'm adding a INIntent to a Mac app. So my app delegate implements: - (nullable id)application:(NSApplication *)application handlerForIntent:(INIntent *)intent Then my custom intent handler implements the two protocol methods -confirmIntentNameHere:completion: and -handleIntentNameHere:completion: During my testing -applicationDidFinishLaunching: is called before the intent methods, so I can forward methods to my main window controller to perform the shortcut actions, since it's already ready. ....But if this is not always the case, I can still perform them but I'd have to move the code out of the window controller to perform the action "headless" if invoked before my app has built its UI. Just wondering if this is something I should be prepared for. Thanks in advance.

I have recently submitted a new app version to the Appstore with Xcode 15.0. Unfortunately, I have started to see the below crash in the Xcode organiser &gt; Crashes section occurring for more number of times. UIKitCore: +[UIAlertController _alertControllerContainedInViewController:] + 160 The exception trace is not leading to main() function but not pointing to any of the code line. I had used UIAlertController in the past versions to show the alerts but there is no code written in the current version code related to UIAlertController. Only from the latest version, this kind of crash started to surface. In the latest release, We have added a third party SDK and while implementing the SDK, we had added the Location and Bluetooth Permissions in Info.plist file. But as we don't want to use/track the Location and Bluetooth details from the app, the SDK team has disabled the Location and Bluetooth settings to not reflect in the tracked data. Is this behaviour creating any conflict with the UIAlertController and logging the crash? Because by default the OS tries to show the alert when the permissions exist in the plist file, but the alert will not come as the service is disabled on the SDK server settings. Is this creating any conflict and logging the crash. Please extend your help.

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

Hi everyone, I'm encountering an intermittent crash on iOS 18 only (not reproducible locally, reported in Firebase Crashlytics) at transitionContext.completeTransition(!transitionContext.transitionWasCancelled) within my custom UIViewControllerAnimatedTransitioning. The same code runs fine on iOS 16 and 17 (no Crashlytics report for those iOS version) Here's the crash log: Crashed: com.apple.main-thread 0 libswiftCore.dylib 0x4391f0 swift_getObjectType + 40 1 ROOM 0x490c48 ItemDetailAnimator.navigationController(_:animationControllerFor:from:to:) + 47 (ItemDetailAnimator.swift:47) 2 ROOM 0x490f3c @objc ItemDetailAnimator.navigationController(_:animationControllerFor:from:to:) + 92 (<compiler-generated>:92) 3 UIKitCore 0xa2d7a4 -[UINavigationController _customTransitionController:] + 516 4 UIKitCore 0x2e51dc -[UINavigationController _immediatelyApplyViewControllers:transition:animated:operation:] + 2620 5 UIKitCore 0x1541d4 __94-[UINavigationController _applyViewControllers:transition:animated:operation:rescheduleBlock:]_block_invoke + 100 6 UIKitCore 0x150768 -[UINavigationController _applyViewControllers:transition:animated:operation:rescheduleBlock:] + 776 7 UIKitCore 0x2e7e44 -[UINavigationController pushViewController:transition:forceImmediate:] + 544 8 UIKitCore 0x2e4230 -[UINavigationController pushViewController:animated:] + 444 9 ROOM 0x66cb04 UINavigationController.pushViewController(_:animated:completion:) + 185 (UINavigationController+Room.swift:185) 10 ROOM 0x8cef4c ItemDetailCoordinator.start(animated:completion:) + 99 (ItemDetailCoordinator.swift:99) 11 ROOM 0xc6c95c protocol witness for Coordinator.start(animated:completion:) in conformance BaseCoordinator + 24 (<compiler-generated>:24) 12 ROOM 0x8ca520 AppCoordinator.startCoordinator(_:url:reference:animated:completion:) + 729 (AppCoordinator.swift:729) 13 ROOM 0x8cb248 protocol witness for URLSupportCoordinatorOpener.startCoordinator(_:url:reference:animated:completion:) in conformance AppCoordinator + 48 (<compiler-generated>:48) 14 ROOM 0xd6166c URLSupportCoordinatorOpener<>.open(url:openingController:reference:animated:completion:) + 118 (URLSupportedCoordinator.swift:118) 15 ROOM 0xc56038 RRAppDelegate.handleURL(url:completion:) + 588 (RRAppDelegate.swift:588) 16 ROOM 0xc502d0 RRAppDelegate.applicationDidBecomeActive(_:) + 330 (RRAppDelegate.swift:330) 17 ROOM 0xc5041c @objc RRAppDelegate.applicationDidBecomeActive(_:) + 52 (<compiler-generated>:52) 18 UIKitCore 0x1fb048 -[UIApplication _stopDeactivatingForReason:] + 1368 My animateTransition code is: ```func animateTransition( using transitionContext: UIViewControllerContextTransitioning) { guard let (fromView, toView, fromVC, toVC) = filterTargets(context: transitionContext) else { transitionContext.cancelInteractiveTransition() transitionContext.completeTransition(false) return } let containerView = transitionContext.containerView toView.frame = transitionContext.finalFrame(for: toVC) guard let targetView = fromVC.animationTargetView, let fromFrame = fromVC.animationTargetFrame, let toFrame = toVC.animationTargetFrame else { containerView.insertSubview(toView, aboveSubview: fromView) toView.frame = transitionContext.finalFrame(for: toVC) transitionContext.completeTransition(true) return } let newFromFrame = fromView.convert(fromFrame, to: containerView) let tempImageView: UIImageView if let target = targetView as? UIImageView, let image = targetImage ?? target.image, image.size.height != 0, target.frame.height != 0, image.size.width / image.size.height != target.frame.width / target.frame.height { targetImage = image tempImageView = UIImageView(image: image) tempImageView.frame = newFromFrame tempImageView.contentMode = .scaleAspectFit } else { tempImageView = targetView.room.asImageView() tempImageView.frame = newFromFrame } targetView.isHidden = true let tempFromView = containerView.room.asImageView() targetView.isHidden = false let tempHideView = UIView() containerView.addSubview(tempFromView) containerView.insertSubview(toView, aboveSubview: tempFromView) tempHideView.backgroundColor = .white toView.addSubview(tempHideView) containerView.addSubview(tempImageView) //Minus with item detail view y position //Need to minus navigation bar height of item detail view var tempHideViewFrame = toFrame tempHideViewFrame.origin.y -= toView.frame.origin.y tempHideView.frame = tempHideViewFrame let duration = transitionDuration(using: transitionContext) toView.alpha = 0 UIView.animate(withDuration: duration * 0.5, delay: duration * 0.5, options: .curveLinear, animations: { toView.alpha = 1 }) let scale: CGFloat = toFrame.width / newFromFrame.width let newFrame = CGRect( x: toFrame.minX - newFromFrame.minX * scale, y: toFrame.minY - newFromFrame.minY * scale, width: tempFromView.frame.size.width * scale, height: tempFromView.frame.size.height * scale) UIView.animate(withDuration: duration, delay: 0.0, options: [.curveEaseInOut], animations: { tempFromView.frame = newFrame tempImageView.frame = toFrame }, completion: { _ in tempHideView.removeFromSuperview() tempFromView.removeFromSuperview() tempImageView.removeFromSuperview() transitionContext.completeTransition(!transitionContext.transitionWasCancelled) }) }

Reproduction procedure Launch Xcode and press shift+command+N to create a macOS App project. Edit the generated ContentView.swift to the following content: struct ContentView: View { @State var txt: String = “” var body: some View { VStack { Text(“Hello, world!\(txt)”) TextField(“input”, text: $txt) onSubmit { // lack of a period letter. // .onSubmit { // Correct code print(“onSubmit\(txt)”) } } } } Build with command+B and it succeeds. Debug with command+R, but a rainbow wheel appears and the window does not show. An error is displayed in Xcode’s Preview Canvas, preventing preview.

QuickTime recording palette behaves in a way which I want to replicate in my desktop app - specifically the behaviour when switching spaces, it appears on top. Currently, my app appears on all spaces, and even over fullscreen applications BUT it already exists when I switch to the space, this feels disjointed. I can't find a solution to this behaviour. Here's the Window Collection Behaviours I've tried (on an NSPanel): FullScreenAuxiliary - appears over fullscreen apps. CanJoinAllSpaces - appears on all spaces. These two options make the dock show up on all spaces in the same position, but on each space they already exists. I've tried this behaviour too: MoveToActiveSpace - which as per docs would move the window into active space only when its reopened, mine stays open all the time. I can't find any more information on how QuickTime achieves this.

https://github.com/apple/sample-food-truck Hi! I'm seeing what looks like some weird navigation issue in the Food Truck app. It's from the Live Activity that should deep link to a specific point in the app. There seems be some state where the app is not linking to the correct component. Here are my repro steps on iPhone: Start live activity from OrderDetailView. Navigate to Sidebar component. Tap the Live Activity. App opens TruckView. The App should be opening the OrderDetailView for the Order that was passed to the Live Activity. This seems to work when the app is not currently on Sidebar. Any ideas? I'm testing this on iPhone OS 18.4.1. Is this an issue inside NavigationSplitView? Is this an issue with how Food Truck handles deeplinking?

When we place a Button inside a ScrollView , the fade animation of the button is delayed, so most users won't see it I think. You can see this in the trivial example struct ContentView: View { var body: some View { ScrollView { Button { // empty } label: { Text("Fade animation test") } } } } Is there any way to opt out of this behavior? In UIKit, this was also the default behavior, but you could always change it by overriding touchesShouldCancel method. I think I can probably do that by rewriting an animation completely with some custom ButtonStyle or by rewriting a Button component completely, but it doesn't seem like a good solution to me, as I want the native look and feel (in case of button animation it is pretty easy to mimic though). And also for some components, like lists, Apple has already implemented the correct behavior by themselves somehow.