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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Automatic Sign-In API — requestAutoSignInAuthorization() - "Service temporarily unavailable"
When integrating the Automatic Sign-In API on physical devices (iPhone SE with iOS 26.0 and Apple TV with tvOS 26.0), the call to requestAutoSignInAuthorization() results in an immediate error stating "Service temporarily unavailable." This prevents the app from obtaining the necessary authorization context to proceed with token updates and the Automatic Sign-In flow. The issue occurs specifically at the authorization request stage and does not progress to calling updateAutoSignInToken(), since it does not acquire conditions for it. All entitlement and sandbox setup have been verified and are correctly configured. Error: Error Domain=VSErrorDomain Code=3 "The service is temporarily unavailable." UserInfo={NSLocalizedDescription=The service is temporarily unavailable., NSLocalizedRecoverySuggestion=Please try again later.}
Topic: UI Frameworks SubTopic: General
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Jul ’25
iOS 26 Beta 3, UIGlassEffect corner radius
In beta 2 using layer.cornerRadius on a UIEffectView with the UIGlassEffect allowed you to change the corner radius of the view. In beta 3, this no longer works. WWDC videos indicate the right way to do this is to set the cornerConfiguration on the UIEffectView, but that API doesn't seem to be available yet. At this time it doesn't seem like theres a way to have a glass view that isn't pill shaped.
Topic: UI Frameworks SubTopic: UIKit Tags:
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Jul ’25
Change to safe area logic on iOS 26
I have a few view controllers in a large UIKit application that previously started showing content right below the bottom of the top navigation toolbar. When testing the same code on iOS 26, these same views have their content extend under the navigation bar and toolbar. I was able to fix it with: if #available(iOS 26, *, *) { self.edgesForExtendedLayout = [.bottom] } when running on iOS 26. I also fixed one or two places where the main view was anchored to self.view.topAnchor instead of self.view.safeAreaLayoutGuide.topAnchor. Although this seems to work, I wonder if this was an intended change in iOS 26 or just a temporary bug in the beta that will be resolved. Were changes made to the safe area and edgesForExtendedLayout logic in iOS 26? If so, is there a place I can see what the specific changes were, so I know my code is handling it properly? Thanks!
Topic: UI Frameworks SubTopic: UIKit
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Nov ’25
Need help with attribute inspector in Xcode 26
I am trying to learn Xcode and swift ui for a class project but the attribute inspector just does not show up, I can have the simulator open or closed I click on it nothing works. I feel so stupid. I suppose you don't need it but it helps a lot. anyone have any trouble shooting that could help?
Topic: UI Frameworks SubTopic: SwiftUI
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`onTapGesture` not triggered on `Map` views
When building with iOS 26 SDK beta 5 (23A5308f), onTapGesture is no longer being triggered on Map views. This appears to be a regression in beta 5 specifically, as this issue was not present in beta 4. How to reproduce Code The following code demonstrates the issue, as seen in the videos below. import MapKit import SwiftUI struct ContentView: View { @State private var location = CGPoint.zero var body: some View { Map() .onTapGesture { location in self.location = location } .safeAreaInset(edge: .bottom) { VStack(alignment: .center) { Text("iOS \(UIDevice.current.systemVersion)") .font(.largeTitle) Text("Tapped Location") Text("\(location.x), \(location.y)") } .frame(maxWidth: .infinity, alignment: .center) .background(.background) } } } Demo The gifs below show the behavior in iOS 18.5 (in which the tap gestures are recognized and tapped coordinate is displayed in the safe area inset) and iOS 26 beta 5 (in which the tap gestures have no effect): iOS 18 iOS 26 Next steps? Is there a recommended workaround for this issue?
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Sep ’25
tvOS 18.0 Siri back button behavior bug
On testing my app with tvOS 18, I have noticed the Siri Remote back button no longer provides system-provided behavior when interacting with tab bar controller pages. Instead of moving focus back to the tab bar when pressed, the back button will close the app, as if the Home button was pressed. This occurs both on device and in the Simulator. Create tvOS project with a tab bar controller. Create pages/tabs which contain focusable items (ie. buttons) Scroll down to any focusable item (ie. a button or UICollectionView cell) Hit the Siri Remote back button. See expect behavior below: Expected behavior: System-provided behavior should move focus back to the tab bar at the top of the screen. Actual results: App is closed and user is taken back to the Home Screen. Has anyone else noticed this behavior?
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Aug ’25
iOS 26.1 PHPickerConfiguration.preselectedAssetIdentifiers doesn't select previous pictures in the PHPickerViewController
Hi, I faced with the issue on iOS 26.1 with PHPickerViewController. After first selection I save assetIdentifier of PHPickerResult for images. next time I open the picker I expect to have the images selected based on assetIdentifier Code: var config = PHPickerConfiguration(photoLibrary: .shared()) config.selectionLimit = 10 config.filter = .images config.preselectedAssetIdentifiers = images.compactMap(\.assetID) let picker = PHPickerViewController(configuration: config) picker.delegate = self present(picker, animated: true) But on iOS 26.1 they aren't selected. On lower iOS version all works fine. Does anybody faced with similar issue?
Topic: UI Frameworks SubTopic: UIKit
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StoreKit's manageSubscriptionsSheet view modifier not loading
Our app was just rejected by Apple because they say the subscription management sheet never loads. It just spins indefinitely. We're using StoreKit's manageSubscriptionsSheet view modifier to present the sheet, and it's always worked for us when testing in SandBox. Has anyone else had this problem? Given that it's Apple's own code that got us rejected, what's our path forward?
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Infinite loop getting "_dismiss changed"
I'm working on a NavigationStack based app. Somewhere I'm using: @Environment(\.dismiss) private var dismiss and when trying to navigate to that view it gets stuck. I used Self._printChanges() and discovered the environment variable dismiss is changing repeatedly. Obviously I am not changing that variable explicitly. I wasn't able to reproduce this in a small project so far, but does anybody have any idea what kind of thing I could be doing that might be causing this issue? iOS 17.0.3
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Mar ’25
Keyboard Toolbar Padding iOS26
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?
Topic: UI Frameworks SubTopic: SwiftUI
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Nov ’25
button is pressed when starting scrolling in iOS 18
On iOS 18, while on a modal screen, if the scrolling starts on a button, that button gets pressed, outside of a modal this doesn't reproduce, also not reproducible on older iOS versions, neither on modals or outside of them. The code to reproduce the issue: import SwiftUI struct ContentView: View { @State var presentModal = false var body: some View { Button(action: { presentModal = true }, label: { Text("open modal") }) .sheet(isPresented: $presentModal, content: { ScrollView { ForEach(0..<100, id: \.self) { index in Button(action: { print("Button \(index) tapped!") }) { Text("Button \(index)") .frame(maxWidth: .infinity) .frame(height: 100) .background(randomColor(for: index)) .padding(.horizontal) } } } }) } func randomColor(for index: Int) -> Color { let hue = Double(index % 100) / 100.0 return Color(hue: hue, saturation: 0.8, brightness: 0.8) } } #Preview { ContentView() }
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Jun ’25
Disabled button in SwiftUI .alert not working
I found an issue when implementing an alert with a TextField to input a name. I want the action button to be disabled until a name has been entered, but the action block is never executed when the button has become enabled and pressed. The problem seems to appear only when name is initially an empty string. Tested with iOS 17.0. struct MyView: View { @State private var name = "" var body: some View { SomeView() .alert(...) { TextField("Name", text: $name) Button("Action") { // Action }.disabled(name.isEmpty) Button("Cancel", role: .cancel) {} } } }
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Feb ’25
iOS 26 & Xcode 26 - bug with keyboard by WebView
Environment iOS 26 (23A343) Xcode 26 Reproduces on device and Simulator Description When presenting a SwiftUI WebView (native iOS 26 component) or a WKWebView/UIWebView via UIViewRepresentable, focusing a text field inside the web view and then dismissing it breaks the keyboard layout behavior. After returning to the main app, tapping any TextField causes the keyboard to cover bottom controls (e.g. buttons). Expected safe area insets are not applied. The issue is only resolved after closing and reopening the keyboard once. Steps to Reproduce Open a SwiftUI screen with WebView (via .sheet or NavigationLink). Inside the web view, tap a text field to show the keyboard. Dismiss the web view. Tap a TextField in the main app. Expected Result Layout should adjust correctly. Bottom controls stay visible above the keyboard. Actual Result Keyboard covers bottom controls. Insets are ignored until the keyboard is dismissed and reopened. Notes Reproduces with: Native SwiftUI WebView (iOS 26) WKWebView and UIWebView via UIViewRepresentable Presentation style (.sheet or navigation push) does not matter. Example video: https://youtu.be/Epgoz1vETKU FB: FB20386257 Sample Code import SwiftUI import WebKit struct ContentView: View { @State var url: URL? @FocusState private var isFocused: Bool var body: some View { VStack { TextField("TextField", text: .constant("")) .focused($isFocused) Button("HIDE KEYBOARD") { isFocused = false } Spacer() Button("ACTION") { url = URL(string: "https://google.com") } } .sheet(item: $url) { value in NavigationStack { WebView(url: value) .toolbar { ToolbarItem(placement: .topBarLeading) { Button("CLOSE") { url = nil } } } } } } } extension URL: Identifiable { public var id: String { absoluteString } }
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Sep ’25
SwiftUi Picker in WatchOS throws Scrollview Error when using Digital Crown
The following WatchOs App example is very short, but already not functioning as it is expected, when using Digital Crown (full code): import SwiftUI struct ContentView: View { let array = ["One","Two","Three","Four"] @State var selection = "One" var body: some View { Picker("Array", selection: $selection) { ForEach(array, id: \.self) { Text($0) } } } } The following 2 errors are thrown, when using Digital Crown for scrolling: ScrollView contentOffset binding has been read; this will cause grossly inefficient view performance as the ScrollView's content will be updated whenever its contentOffset changes. Read the contentOffset binding in a view that is not parented between the creator of the binding and the ScrollView to avoid this. Error: Error Domain=NSOSStatusErrorDomain Code=-536870187 "(null)" Any help appreciated. Thanks a lot.
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Mar ’25
dropDestination does not work inside List
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?
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Apr ’25
Is this log noise? "CoreSVG: Error: NULL ref passed to getObjectCoreSVG: Error: NULL ref passed to getObject"
Before I waste time creating an Apple Developer Support ticket, I’m hoping an Apple DTS engineer can confirm if this is just log noise. Here’s the code: import SwiftUI struct ContentView: View { @State private var editMode: EditMode = .inactive @State private var items = ["Item 1", "Item 2", "Item 3"] var body: some View { NavigationStack { List { ForEach(items, id: \.self) { item in Text(item) } .onDelete { indexSet in items.remove(atOffsets: indexSet) } } .environment(\.editMode, $editMode) .toolbar { ToolbarItem(placement: .topBarTrailing) { EditButton() .environment(\.editMode, $editMode) } } } } } #Preview { ContentView() } When you run this code and tap Edit, you’ll initially get: CoreSVG has logged an error. Set environment variabe [sic] "CORESVG_VERBOSE" to learn more. After setting CORESVG_VERBOSE = YES, you’ll see: CoreSVG: Error: NULL ref passed to getObjectCoreSVG: Error: NULL ref passed to getObject This error only appears the first time Edit is tapped after a build and run. It won't happen again, even after force-quitting and reopening the app. The issue also only happens on iOS 18.0 and 18.1—I can’t reproduce it on iOS 17.5. Fortunately, it doesn’t seem to cause any negative side effects. Is this just log noise?
Topic: UI Frameworks SubTopic: SwiftUI
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Apr ’25
UIApplication.shared.open iOS 18
Making the call as: UIApplication.shared.open(websiteURL) doesn't open the browser and gives the following in the console: BUG IN CLIENT OF UIKIT: The caller of UIApplication.openURL(:) needs to migrate to the non-deprecated UIApplication.open(:options:completionHandler:). Force returning false (NO). However, making the call as: UIApplication.shared.open(websiteURL) { _ in } opens the browser and there is nothing in the cosole. Does someone understand why is this or if it's Apple's iOS 18 bug? In the iOS & iPadOS 18 RC Release Notes | Apple Developer Documentation there is a section around resolving this or something similar, unsure.
Topic: UI Frameworks SubTopic: UIKit
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Jan ’25
iOS 26 UIKIt: Where's the missing cornerConfiguration property of UIViewEffectView?
In WWDC25 video 284: Build a UIKit app with the new design, there is mention of a cornerConfiguration property on UIVisualEffectView. But this properly isn't documented and Xcode 26 isn't aware of any such property. I'm trying to replicate the results of that video in the section titled Custom Elements starting at the 19:15 point. There is a lot of missing details and typos in the code associated with that video. My attempts with UIGlassEffect and UIViewEffectView do not result in any capsule shapes. I just get rectangles with no rounded corners at all. As an experiment, I am trying to recreate the capsule with the layers/location buttons in the iOS 26 version of the Maps app. I put the following code in a view controller's viewDidLoad method let imgCfgLayer = UIImage.SymbolConfiguration(hierarchicalColor: .systemGray) let imgLayer = UIImage(systemName: "square.2.layers.3d.fill", withConfiguration: imgCfgLayer) var cfgLayer = UIButton.Configuration.plain() cfgLayer.image = imgLayer let btnLayer = UIButton(configuration: cfgLayer, primaryAction: UIAction(handler: { _ in print("layer") })) var cfgLoc = UIButton.Configuration.plain() let imgLoc = UIImage(systemName: "location") cfgLoc.image = imgLoc let btnLoc = UIButton(configuration: cfgLoc, primaryAction: UIAction(handler: { _ in print("location") })) let bgEffect = UIGlassEffect() bgEffect.isInteractive = true let bg = UIVisualEffectView(effect: bgEffect) bg.contentView.addSubview(btnLayer) bg.contentView.addSubview(btnLoc) view.addSubview(bg) btnLayer.translatesAutoresizingMaskIntoConstraints = false btnLoc.translatesAutoresizingMaskIntoConstraints = false bg.translatesAutoresizingMaskIntoConstraints = false NSLayoutConstraint.activate([ btnLayer.leadingAnchor.constraint(equalTo: bg.contentView.leadingAnchor), btnLayer.trailingAnchor.constraint(equalTo: bg.contentView.trailingAnchor), btnLayer.topAnchor.constraint(equalTo: bg.contentView.topAnchor), btnLoc.centerXAnchor.constraint(equalTo: bg.contentView.centerXAnchor), btnLoc.topAnchor.constraint(equalTo: btnLayer.bottomAnchor, constant: 15), btnLoc.bottomAnchor.constraint(equalTo: bg.contentView.bottomAnchor), bg.centerXAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerXAnchor), bg.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor, constant: 40), ]) The result is pretty close other than the complete lack of capsule shape. What changes would be needed to get the capsule shape? Is this even the proper approach?
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Sep ’25