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.

All subtopics
Posts under UI Frameworks topic

Post

Replies

Boosts

Views

Activity

UIDocumentPickerViewController -initForOpeningContentTypes: gives URL to app without permission to read it in Release mode only
I'm using UIDocumentPickerViewController to open a url. Works fine in debug mode but version on the App Store is failing. Code to create the document picker is like: NSArray *theTypes = [UTType typesWithTag:@"docxtensionhere" tagClass:UTTagClassFilenameExtension conformingToType:nil]; UIDocumentPickerViewController *documentPicker = [[UIDocumentPickerViewController alloc]initForOpeningContentTypes:theTypes]; documentPicker.delegate = self;   [self presentViewController:documentPicker animated:YES completion:nil]; So in debug mode this is all gravy. -documentPicker:didPickDocumentsAtURLs: passes back a URL and I can read the file. In release mode I get a URL but my app is denied access to read the file. After inspecting some logging it appears the sandbox is not granting my app permission. error Domain=NSCocoaErrorDomain Code=257 "The file “Filename.fileextensionhere” couldn’t be opened because you don’t have permission to view it." UserInfo={NSFilePath=/private/var/mobile/Library/Mobile Documents/comappleCloudDocs/Filename.fileextensionhere, NSUnderlyingError=0x2834c9da0 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}} -- If I'm doing something wrong with UIDocumentPickerViewController it is a real shame that permission is not being denied in Debug mode, as devs are more likely to catch in prior to release. Anyone know where I'm going wrong and if not have a workaround? Thanks in advance.
9
0
2.3k
Sep ’25
List jumps back to the top
Following on from this thread: https://aninterestingwebsite.com/forums/thread/805037 my list of items is now correctly maintaining state (no more disappearing rows), but I'm now hitting a really annoying issue: Every time something changes - even just changing the dark mode of the device - the entire list of items is refreshed, and the list jumps back to the top. A simple representation: // modelData.filteredItems is either all items or some items, depending on whether the user is searching List { ForEach(modelData.filteredItems) { item in ItemRow(item: item) } } When the user isn't searching, filteredItems has everything in it. When they turn on search, I filter and sort the data in place: // Called when the user turns on search, or when the searchString or searchType changes func sortAndFilterItemsInModelData() { modelData.filteredItems.removeAll() // Remove all items from the filtered array modelData.filteredItems.append(contentsOf: modelData.allItems) // Add all items back in let searchString: String = modelData.searchString.lowercased() switch(modelData.searchType) { case 1: // Remove all items from the filtered array that don't match the search string modelData.filteredItems.removeAll(where: { !$0.name.lowercased().contains(searchString) }) ... } // Sorting switch(modelData.sortKey) { case sortKeyDate: modelData.sortAscending ? modelData.filteredItems.sort { $0.date < $1.date } : modelData.filteredItems.sort { $0.date > $1.date } // Sorts in place ... } } The method doesn't return anything because all the actions are done in place on the data, and the view should display the contents of modelData.filteredItems. If you're searching and there are, say 10 items in the list and you're at the bottom of the list, then you change the search so there are now 11 items, it jumps back to the top rather than just adding the extra ItemRow to the bottom. Yes, the data is different, but it hasn't been replaced; it has been altered in place. The biggest issue here is that you can simply change the device to/from Dark Mode - which can happen automatically at a certain time of day - and you're thrown back to the top of the list. The array of data hasn't changed, but SwiftUI treats it as though it has. There's also a section in the List that can be expanded and contracted. It shows or hides items of a certain type. When I expand it, I expect the list to stay in the same place and just show the extra rows, but again, it jumps to the top. It's a really poor user experience. Am I doing something wrong (probably, yes), or is there some other way to retain the scroll position in a List? The internet suggests switching to a LazyVStack, but I lose left/right swipe buttons and the platform-specific styling. Thanks.
9
0
335
Oct ’25
UITextView crash on iOS 18.4 beta
UITextView crash when setting attributed text that contains substring ffi and attributedText contains NSFontAttributeName, NSForegroundColorAttributeName Reproducible case: UITextView *textView = [[UITextView alloc] init]; textView.attributedText = [[NSAttributedString alloc] initWithString:@"ffi" attributes:@{ NSParagraphStyleAttributeName: [self createParagraphOfLineHeight:20], NSFontAttributeName: [UIFont systemFontOfSize:fontSize weight:UIFontWeightRegular], NSForegroundColorAttributeName: UIColor.black }];
Topic: UI Frameworks SubTopic: UIKit Tags:
9
2
2.2k
May ’25
iOS 14 UIPickerView Selected View Background Color
I have noticed that in iOS 14 the UIPickerView has by default a light grey background on the selected Row like shown here. https://aninterestingwebsite.com/design/human-interface-guidelines/ios/controls/pickers/ I noticed also that pickerView.showsSelectionIndicator is deprecated on iOS 14. Is there a way to change the background color to white and add separators to achieve a pre iOS 14 UIPickerView style? Thank you
9
0
11k
Jun ’25
Swipe to go back still broken with Zoom navigation transition.
When you use .navigationTransition(.zoom(sourceID: "placeholder", in: placehoder)) for navigation animation, going back using the swipe gesture is still very buggy on IOS26. I know it has been mentioned in other places like here: https://aninterestingwebsite.com/forums/thread/796805?answerId=856846022#856846022 but nothing seems to have been done to fix this issue. Here is a video showing the bug comparing when the back button is used vs swipe to go back: https://imgur.com/a/JgEusRH I wish there was a way to at least disable the swipe back gesture until this bug is fixed.
9
2
705
5d
iOS26 UISearchbar and UISearchController cancellation issues
Is the Cancel button intentionally removed from UISearchBar (right side)? Even when using searchController with navigationItem also. showsCancelButton = true doesn’t display the cancel button. Also: When tapping the clear ("x") button inside the search field, the search is getting canceled, and searchBarCancelButtonClicked(_:) is triggered (Generally it should only clear text, not cancel search). If the search text is empty and I tap outside the search bar, the search is canceled. Also when I have tableview in my controller(like recent searches) below search bar and if I try to tap when editing started, action is not triggered(verified in sample too). Just cancellation is happening. In a split view controller, if the search is on the right side and I try to open the side panel, the search also gets canceled. Are these behaviors intentional changes, beta issues, or are we missing something in implementation?
9
1
951
Dec ’25
iOS 18.1 crash UIHostingView.layoutSubviews() / swift_unknownObjectWeakAssign / objc_storeWeak
We're seeing sporadic crashes on devices running iOS 18.1 - both beta and release builds (22B83). The stack trace is always identical, a snippet of it below. As you can tell from the trace, it's happening in places we embed SwiftUI into UIKit via UIHostingController. Anyone else seeing this? 4 libobjc.A.dylib 0xbe2c _objc_fatalv(unsigned long long, unsigned long long, char const*, char*) + 30 5 libobjc.A.dylib 0xb040 weak_register_no_lock + 396 6 libobjc.A.dylib 0xac50 objc_storeWeak + 472 7 libswiftCore.dylib 0x43ac34 swift_unknownObjectWeakAssign + 24 8 SwiftUI 0xeb74c8 _UIHostingView.base.getter + 160 9 SwiftUI 0x92124 _UIHostingView.layoutSubviews() + 112 10 SwiftUI 0x47860 @objc _UIHostingView.layoutSubviews() + 36
9
1
1.4k
Dec ’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?
9
0
3.8k
Feb ’26
Trailing closure passed to parameter of type 'Int' that does not accept a closure
I have TabView in ContentView and I want to add TabView for OnboardingView in OtherView, every things work, but it is throw error for TabView in OtherView like "Trailing closure passed to parameter of type 'Int' that does not accept a closure" I do not know why? Any idea? ContentView: struct TabView : View {       var body: some View{           VStack(spacing: 0){ ....... } OtherView:    VStack {     TabView {       ForEach(onboardingData) { onboardingItem in          OnboardingCard(onboardingItem: onboardingItem)       }   }   .tabViewStyle(PageTabViewStyle(indexDisplayMode: .automatic))   .indexViewStyle(PageIndexViewStyle (backgroundDisplayMode:   .always))   .foregroundColor(.white) }
9
1
6.8k
Jan ’26
NSCollectionLayoutBoundarySupplementaryItem background blur covering the entire layout section
My app has the following UI layout: NSSplitViewController as the windows contentViewController NSPageController in the content (right) split item NSTabViewController as the root items of the NSPageController NSViewController with a collection view in the first tab of that NSTabViewController The collection view is using a NSCollectionViewCompositionalLayout in which the sections are set up to have a header using NSCollectionLayoutBoundarySupplementaryItem with pinToVisibleBounds=true and alignment=top With macOS 26, the pinned supplementary item automatically gets a blurred/semi-transparent background that seamlessly integrates with the toolbar. When the window's title bar has a NSTitlebarAccessoryViewController added, the said semi-transparent background gets a bottom hard edge and a hairline to provide more visual separation from the main content. During runtime, my NSPageController transitions from the NSTabViewController to another view controller. When transitioning back, the semi-transparent blur bleeds into the entire section. This happens no matter if there's a NSTitlebarAccessoryViewController added or not. It doesn't happen 100% of the cases, it seems to depend on section size, header visibility and/or scroll position. But it happens more often than not. Most of the time, a second or so after the back transition - shortly after pageControllerDidEndLiveTransition: of the NSPageControllerDelegate is called - the view updates and the supplementary views are back to normal. Sometimes, the issue also appears not when transitioning using NSPageController, but simply by scrolling through the collection view. Anyone has an idea what is happening here? Below are two screenshots of both the "ok" and "not ok" state I'm on macOS 26.0.1 and I'm using XCode 26.0.1
Topic: UI Frameworks SubTopic: AppKit Tags:
8
0
418
Nov ’25
Button in ToolbarItem is not completely tapable on iOS 26
I have an icon button in toolbar but only the icon is triggering tap events while outside icon button gives tap feedback but event is not firing. Code: ToolbarItem(placement: .navigationBarTrailing) { Button(action: toggleBookmark) { Image(systemName: isBookmarked ? "bookmark.fill" : "bookmark") .resizable() .aspectRatio(0.8, contentMode: .fit) .frame(width: 20, height: 20) } } Here toggleBookmark function is only called if I click on Image but not if I click outside image but on the circular button that appears on iOS 26. See this screen recording.
Topic: UI Frameworks SubTopic: SwiftUI
8
2
355
3w
Widget link broken by `.desaturated` image rendering mode
Using desaturated mode on an image in a widget will break any links or buttons that use the image as their 'label'. Using the following will just open the app as if there was no link at all - therefore just using the fallback userActivity handler, or any .widgetURL() urls provided. Link(destination: URL(string: "bug://never-works")!) { Image("puppy") .widgetAccentedRenderingMode(.desaturated) } The same goes for buttons: Button(intent: MyDemoIntent()) { Image("puppy") .widgetAccentedRenderingMode(.desaturated) } I've tried hacky solutions like putting the link behind the image using a ZStack, and disabling hit testing on the image, but they don't work. Anything else to try? Logged as Feedback #15152620.
8
5
918
Dec ’25
SwiftUI TextField with optional value working for @State but not @Binding properties
I've encountered a potential bug where a TextField connected to an optional value (not a string) works as expected when bound to a @State property, but won't update a @Binding property. Here is some example code import SwiftUI struct ContentView: View { @Binding var boundValue: Double? @State private var stateValue: Double? = 55 var body: some View { TextField("Bound value", value: $boundValue, format: .number) Text("\(boundValue ?? .nan)") TextField("State value", value: $stateValue, format: .number) Text("\(stateValue ?? .nan)") } } #Preview { ContentView(boundValue: .constant(42.00)) } It's as though the optional value stored externally is preventing the value updating. Can anyone confirm whether this is intentional, or a bug? This is in Xcode 26b6, on macOS Tahoe 26b8, but from this query it looks like the problem has existed for years.
Topic: UI Frameworks SubTopic: SwiftUI
8
0
381
Aug ’25
How to access clear Liquid Glass Effect?
On WWDC25 session "Meet Liquid Glass", two Liquid Glass variants are mentioned: "regular" and "clear". "Regular" seems to be the default setting for UIGlassEffect, but I was not able to find an option for clear. Is there a native element that uses clear? Is it coming to later betas for iOS 26?
8
11
653
Jul ’25
NavigationSplitView detail view with safearea
Hi, I have a NavigationSplitView with a view in the detail section: NavigationSplitView { ZStack { Color.black.ignoresSafeArea() gradientBlack2Blue.opacity(0.25) .ignoresSafeArea() GeometryReader { p in VStack { List { SidebarViewCell(id: "1", text: "Steuersätze" , type: .TAX_MASTERDATA , selectedMasterdataType: $selectedMasterdataType) }.listRowSpacing(size.height * 1.25 / 100 ) .scrollContentBackground(.hidden) .toolbar(.hidden, for: .navigationBar) .frame(width: p.size.width * 98 / 100 , height: p.size.height, alignment: .topLeading). }alignment: .topLeading) } } } detail: { MasterdataDetailView().ignoresSafeArea() } }.navigationSplitViewStyle(.balanced) When I place a Button-Control in the MasterdataDetailView it cannot be clicked because it is in the safe area. How can I make it clickable? Best Regards, Frank
8
0
1.7k
Oct ’25
iOS 26.1 PHPickerConfiguration.preselectedAssetIdentifiers doesn't select previous pictures in the PHPickerViewController
Hi, I faced with the issue on iOS 26.1 with PHPickerViewController. After first selection I save assetIdentifier of PHPickerResult for images. next time I open the picker I expect to have the images selected based on assetIdentifier Code: var config = PHPickerConfiguration(photoLibrary: .shared()) config.selectionLimit = 10 config.filter = .images config.preselectedAssetIdentifiers = images.compactMap(\.assetID) let picker = PHPickerViewController(configuration: config) picker.delegate = self present(picker, animated: true) But on iOS 26.1 they aren't selected. On lower iOS version all works fine. Does anybody faced with similar issue?
Topic: UI Frameworks SubTopic: UIKit
8
7
698
1w
EditMode & EditButton not working in a way I expect
I have something that looks like: NavigationStack { List(self.items, id: \.self, selection: self.$selectedItems) { item in NavigationLink { ItemView(item: item) .environment(\.managedObjectContext, self.viewContext) } label: { LabelWithMenuView(object: item) { ptr in self.labelHandler(item: item, newName: ptr) } } } if self.editMode?.wrappedValue == .active { editButtons } else { TextField("Add Item", text: self.$newItem) .onSubmit { self.addItem() self.newItem = "" } .padding() } } #if os(iOS) .toolbar { EditButton() } .onChange(of: self.editMode?.wrappedValue) { old, new in print("editMode \(old) -> \(new)") } #endif With that layout, the edit button doesn't show up at all; if I put it as part of the List, it does show up, but the first click doesn't do anything; after that, it works, but the onChange handler doesn't show it getting changed, and the editButtons don't go away.
8
2
2.5k
May ’25
iOS 26 Beta breaks scroll/gesture in SwiftUI chat (worked in iOS 18): Simultaneous gestures & ScrollViewReader issues
Hi all, After upgrading to the iOS 26 beta, the scrolling in my SwiftUI chat view is completely broken. The exact same code works perfectly on iOS 18. Context: I have a chat view using ScrollViewReader and a vertically-reversed ScrollView (with .rotationEffect(.degrees(180))). Each message row (MessageBubble) uses multiple simultaneousGesture handlers: Horizontal drag for swipe-to-reply (and other actions: pin, delete) Long press for showing popover/actions Vertical scroll for normal chat scrolling This was working great on iOS 18. In iOS 26 beta, the vertical scroll is either completely disabled, jittery, or hijacked by the message row’s drag gestures, even though .simultaneousGesture is used (see code below). Minimal Repro Sample MessageListView.swift swift Copy Edit ScrollViewReader { proxy in ScrollView(.vertical, showsIndicators: false) { LazyVStack(spacing: 0) { // ... grouped messages ForEach(...) { ... MessageBubble(...) // see below } Color.clear.frame(height: 8).id("BOTTOM_ANCHOR") } .padding(.horizontal, 4) .rotationEffect(.degrees(180)) } .rotationEffect(.degrees(180)) } MessageBubble.swift struct MessageBubble: View { // ... var body: some View { // horizontal swipe-to-reply gesture let dragGesture = DragGesture(minimumDistance: 10) // ... ZStack { // ... HStack { ... } // ... .simultaneousGesture( DragGesture(minimumDistance: 0) // for long press // ... ) .simultaneousGesture(dragGesture) // for horizontal swipe } // ... } }
8
10
1.3k
Sep ’25
.glassEffect(_in:) crushing on iOS 26 public beta.
In one of my apps, i am using .glassEffect(_:In) to add glass effect on various elements. The app always crushes when a UI element with glassEffect(_in:) modifier is being rendered. This only happens on device running iOS 26 public beta. I know this for certain because I connected the particular device to xcode and run the app on the device. When i comment out the glassEffect modifier, app doesn't crush. Is it possible to check particular realeases with #available? If not, how should something like this be handled. Also how do i handle such os level erros without the app crushing. Thanks.
Topic: UI Frameworks SubTopic: SwiftUI Tags:
8
0
284
Nov ’25
A basic DocumentGroup App presents two back "<" buttons on the navigation bar.
Please has anyone found a workaround for duplicate back buttons appearing on the toolbar of a ContentView launched from a DocumentGroup? The problem occurs with Xcode 14.0 running a basic DocumentGroup App on iOS 16.0. To reproduce, simply build a new project using the "Document App" template. Build and run in the iOS/iPadOS simulator or on an iOS/iPadOS device. Two back buttons appear. Only one functions. I've not found a way to eliminate the dud. This problem has occurred throughout the Xcode 14.0 beta program.
8
6
2k
May ’25
UIDocumentPickerViewController -initForOpeningContentTypes: gives URL to app without permission to read it in Release mode only
I'm using UIDocumentPickerViewController to open a url. Works fine in debug mode but version on the App Store is failing. Code to create the document picker is like: NSArray *theTypes = [UTType typesWithTag:@"docxtensionhere" tagClass:UTTagClassFilenameExtension conformingToType:nil]; UIDocumentPickerViewController *documentPicker = [[UIDocumentPickerViewController alloc]initForOpeningContentTypes:theTypes]; documentPicker.delegate = self;   [self presentViewController:documentPicker animated:YES completion:nil]; So in debug mode this is all gravy. -documentPicker:didPickDocumentsAtURLs: passes back a URL and I can read the file. In release mode I get a URL but my app is denied access to read the file. After inspecting some logging it appears the sandbox is not granting my app permission. error Domain=NSCocoaErrorDomain Code=257 "The file “Filename.fileextensionhere” couldn’t be opened because you don’t have permission to view it." UserInfo={NSFilePath=/private/var/mobile/Library/Mobile Documents/comappleCloudDocs/Filename.fileextensionhere, NSUnderlyingError=0x2834c9da0 {Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"}} -- If I'm doing something wrong with UIDocumentPickerViewController it is a real shame that permission is not being denied in Debug mode, as devs are more likely to catch in prior to release. Anyone know where I'm going wrong and if not have a workaround? Thanks in advance.
Replies
9
Boosts
0
Views
2.3k
Activity
Sep ’25
List jumps back to the top
Following on from this thread: https://aninterestingwebsite.com/forums/thread/805037 my list of items is now correctly maintaining state (no more disappearing rows), but I'm now hitting a really annoying issue: Every time something changes - even just changing the dark mode of the device - the entire list of items is refreshed, and the list jumps back to the top. A simple representation: // modelData.filteredItems is either all items or some items, depending on whether the user is searching List { ForEach(modelData.filteredItems) { item in ItemRow(item: item) } } When the user isn't searching, filteredItems has everything in it. When they turn on search, I filter and sort the data in place: // Called when the user turns on search, or when the searchString or searchType changes func sortAndFilterItemsInModelData() { modelData.filteredItems.removeAll() // Remove all items from the filtered array modelData.filteredItems.append(contentsOf: modelData.allItems) // Add all items back in let searchString: String = modelData.searchString.lowercased() switch(modelData.searchType) { case 1: // Remove all items from the filtered array that don't match the search string modelData.filteredItems.removeAll(where: { !$0.name.lowercased().contains(searchString) }) ... } // Sorting switch(modelData.sortKey) { case sortKeyDate: modelData.sortAscending ? modelData.filteredItems.sort { $0.date < $1.date } : modelData.filteredItems.sort { $0.date > $1.date } // Sorts in place ... } } The method doesn't return anything because all the actions are done in place on the data, and the view should display the contents of modelData.filteredItems. If you're searching and there are, say 10 items in the list and you're at the bottom of the list, then you change the search so there are now 11 items, it jumps back to the top rather than just adding the extra ItemRow to the bottom. Yes, the data is different, but it hasn't been replaced; it has been altered in place. The biggest issue here is that you can simply change the device to/from Dark Mode - which can happen automatically at a certain time of day - and you're thrown back to the top of the list. The array of data hasn't changed, but SwiftUI treats it as though it has. There's also a section in the List that can be expanded and contracted. It shows or hides items of a certain type. When I expand it, I expect the list to stay in the same place and just show the extra rows, but again, it jumps to the top. It's a really poor user experience. Am I doing something wrong (probably, yes), or is there some other way to retain the scroll position in a List? The internet suggests switching to a LazyVStack, but I lose left/right swipe buttons and the platform-specific styling. Thanks.
Replies
9
Boosts
0
Views
335
Activity
Oct ’25
UITextView crash on iOS 18.4 beta
UITextView crash when setting attributed text that contains substring ffi and attributedText contains NSFontAttributeName, NSForegroundColorAttributeName Reproducible case: UITextView *textView = [[UITextView alloc] init]; textView.attributedText = [[NSAttributedString alloc] initWithString:@"ffi" attributes:@{ NSParagraphStyleAttributeName: [self createParagraphOfLineHeight:20], NSFontAttributeName: [UIFont systemFontOfSize:fontSize weight:UIFontWeightRegular], NSForegroundColorAttributeName: UIColor.black }];
Topic: UI Frameworks SubTopic: UIKit Tags:
Replies
9
Boosts
2
Views
2.2k
Activity
May ’25
iOS 14 UIPickerView Selected View Background Color
I have noticed that in iOS 14 the UIPickerView has by default a light grey background on the selected Row like shown here. https://aninterestingwebsite.com/design/human-interface-guidelines/ios/controls/pickers/ I noticed also that pickerView.showsSelectionIndicator is deprecated on iOS 14. Is there a way to change the background color to white and add separators to achieve a pre iOS 14 UIPickerView style? Thank you
Replies
9
Boosts
0
Views
11k
Activity
Jun ’25
Swipe to go back still broken with Zoom navigation transition.
When you use .navigationTransition(.zoom(sourceID: "placeholder", in: placehoder)) for navigation animation, going back using the swipe gesture is still very buggy on IOS26. I know it has been mentioned in other places like here: https://aninterestingwebsite.com/forums/thread/796805?answerId=856846022#856846022 but nothing seems to have been done to fix this issue. Here is a video showing the bug comparing when the back button is used vs swipe to go back: https://imgur.com/a/JgEusRH I wish there was a way to at least disable the swipe back gesture until this bug is fixed.
Replies
9
Boosts
2
Views
705
Activity
5d
iOS26 UISearchbar and UISearchController cancellation issues
Is the Cancel button intentionally removed from UISearchBar (right side)? Even when using searchController with navigationItem also. showsCancelButton = true doesn’t display the cancel button. Also: When tapping the clear ("x") button inside the search field, the search is getting canceled, and searchBarCancelButtonClicked(_:) is triggered (Generally it should only clear text, not cancel search). If the search text is empty and I tap outside the search bar, the search is canceled. Also when I have tableview in my controller(like recent searches) below search bar and if I try to tap when editing started, action is not triggered(verified in sample too). Just cancellation is happening. In a split view controller, if the search is on the right side and I try to open the side panel, the search also gets canceled. Are these behaviors intentional changes, beta issues, or are we missing something in implementation?
Replies
9
Boosts
1
Views
951
Activity
Dec ’25
iOS 18.1 crash UIHostingView.layoutSubviews() / swift_unknownObjectWeakAssign / objc_storeWeak
We're seeing sporadic crashes on devices running iOS 18.1 - both beta and release builds (22B83). The stack trace is always identical, a snippet of it below. As you can tell from the trace, it's happening in places we embed SwiftUI into UIKit via UIHostingController. Anyone else seeing this? 4 libobjc.A.dylib 0xbe2c _objc_fatalv(unsigned long long, unsigned long long, char const*, char*) + 30 5 libobjc.A.dylib 0xb040 weak_register_no_lock + 396 6 libobjc.A.dylib 0xac50 objc_storeWeak + 472 7 libswiftCore.dylib 0x43ac34 swift_unknownObjectWeakAssign + 24 8 SwiftUI 0xeb74c8 _UIHostingView.base.getter + 160 9 SwiftUI 0x92124 _UIHostingView.layoutSubviews() + 112 10 SwiftUI 0x47860 @objc _UIHostingView.layoutSubviews() + 36
Replies
9
Boosts
1
Views
1.4k
Activity
Dec ’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?
Replies
9
Boosts
0
Views
3.8k
Activity
Feb ’26
Trailing closure passed to parameter of type 'Int' that does not accept a closure
I have TabView in ContentView and I want to add TabView for OnboardingView in OtherView, every things work, but it is throw error for TabView in OtherView like "Trailing closure passed to parameter of type 'Int' that does not accept a closure" I do not know why? Any idea? ContentView: struct TabView : View {       var body: some View{           VStack(spacing: 0){ ....... } OtherView:    VStack {     TabView {       ForEach(onboardingData) { onboardingItem in          OnboardingCard(onboardingItem: onboardingItem)       }   }   .tabViewStyle(PageTabViewStyle(indexDisplayMode: .automatic))   .indexViewStyle(PageIndexViewStyle (backgroundDisplayMode:   .always))   .foregroundColor(.white) }
Replies
9
Boosts
1
Views
6.8k
Activity
Jan ’26
NSCollectionLayoutBoundarySupplementaryItem background blur covering the entire layout section
My app has the following UI layout: NSSplitViewController as the windows contentViewController NSPageController in the content (right) split item NSTabViewController as the root items of the NSPageController NSViewController with a collection view in the first tab of that NSTabViewController The collection view is using a NSCollectionViewCompositionalLayout in which the sections are set up to have a header using NSCollectionLayoutBoundarySupplementaryItem with pinToVisibleBounds=true and alignment=top With macOS 26, the pinned supplementary item automatically gets a blurred/semi-transparent background that seamlessly integrates with the toolbar. When the window's title bar has a NSTitlebarAccessoryViewController added, the said semi-transparent background gets a bottom hard edge and a hairline to provide more visual separation from the main content. During runtime, my NSPageController transitions from the NSTabViewController to another view controller. When transitioning back, the semi-transparent blur bleeds into the entire section. This happens no matter if there's a NSTitlebarAccessoryViewController added or not. It doesn't happen 100% of the cases, it seems to depend on section size, header visibility and/or scroll position. But it happens more often than not. Most of the time, a second or so after the back transition - shortly after pageControllerDidEndLiveTransition: of the NSPageControllerDelegate is called - the view updates and the supplementary views are back to normal. Sometimes, the issue also appears not when transitioning using NSPageController, but simply by scrolling through the collection view. Anyone has an idea what is happening here? Below are two screenshots of both the "ok" and "not ok" state I'm on macOS 26.0.1 and I'm using XCode 26.0.1
Topic: UI Frameworks SubTopic: AppKit Tags:
Replies
8
Boosts
0
Views
418
Activity
Nov ’25
Button in ToolbarItem is not completely tapable on iOS 26
I have an icon button in toolbar but only the icon is triggering tap events while outside icon button gives tap feedback but event is not firing. Code: ToolbarItem(placement: .navigationBarTrailing) { Button(action: toggleBookmark) { Image(systemName: isBookmarked ? "bookmark.fill" : "bookmark") .resizable() .aspectRatio(0.8, contentMode: .fit) .frame(width: 20, height: 20) } } Here toggleBookmark function is only called if I click on Image but not if I click outside image but on the circular button that appears on iOS 26. See this screen recording.
Topic: UI Frameworks SubTopic: SwiftUI
Replies
8
Boosts
2
Views
355
Activity
3w
Widget link broken by `.desaturated` image rendering mode
Using desaturated mode on an image in a widget will break any links or buttons that use the image as their 'label'. Using the following will just open the app as if there was no link at all - therefore just using the fallback userActivity handler, or any .widgetURL() urls provided. Link(destination: URL(string: "bug://never-works")!) { Image("puppy") .widgetAccentedRenderingMode(.desaturated) } The same goes for buttons: Button(intent: MyDemoIntent()) { Image("puppy") .widgetAccentedRenderingMode(.desaturated) } I've tried hacky solutions like putting the link behind the image using a ZStack, and disabling hit testing on the image, but they don't work. Anything else to try? Logged as Feedback #15152620.
Replies
8
Boosts
5
Views
918
Activity
Dec ’25
SwiftUI TextField with optional value working for @State but not @Binding properties
I've encountered a potential bug where a TextField connected to an optional value (not a string) works as expected when bound to a @State property, but won't update a @Binding property. Here is some example code import SwiftUI struct ContentView: View { @Binding var boundValue: Double? @State private var stateValue: Double? = 55 var body: some View { TextField("Bound value", value: $boundValue, format: .number) Text("\(boundValue ?? .nan)") TextField("State value", value: $stateValue, format: .number) Text("\(stateValue ?? .nan)") } } #Preview { ContentView(boundValue: .constant(42.00)) } It's as though the optional value stored externally is preventing the value updating. Can anyone confirm whether this is intentional, or a bug? This is in Xcode 26b6, on macOS Tahoe 26b8, but from this query it looks like the problem has existed for years.
Topic: UI Frameworks SubTopic: SwiftUI
Replies
8
Boosts
0
Views
381
Activity
Aug ’25
How to access clear Liquid Glass Effect?
On WWDC25 session "Meet Liquid Glass", two Liquid Glass variants are mentioned: "regular" and "clear". "Regular" seems to be the default setting for UIGlassEffect, but I was not able to find an option for clear. Is there a native element that uses clear? Is it coming to later betas for iOS 26?
Replies
8
Boosts
11
Views
653
Activity
Jul ’25
NavigationSplitView detail view with safearea
Hi, I have a NavigationSplitView with a view in the detail section: NavigationSplitView { ZStack { Color.black.ignoresSafeArea() gradientBlack2Blue.opacity(0.25) .ignoresSafeArea() GeometryReader { p in VStack { List { SidebarViewCell(id: "1", text: "Steuersätze" , type: .TAX_MASTERDATA , selectedMasterdataType: $selectedMasterdataType) }.listRowSpacing(size.height * 1.25 / 100 ) .scrollContentBackground(.hidden) .toolbar(.hidden, for: .navigationBar) .frame(width: p.size.width * 98 / 100 , height: p.size.height, alignment: .topLeading). }alignment: .topLeading) } } } detail: { MasterdataDetailView().ignoresSafeArea() } }.navigationSplitViewStyle(.balanced) When I place a Button-Control in the MasterdataDetailView it cannot be clicked because it is in the safe area. How can I make it clickable? Best Regards, Frank
Replies
8
Boosts
0
Views
1.7k
Activity
Oct ’25
iOS 26.1 PHPickerConfiguration.preselectedAssetIdentifiers doesn't select previous pictures in the PHPickerViewController
Hi, I faced with the issue on iOS 26.1 with PHPickerViewController. After first selection I save assetIdentifier of PHPickerResult for images. next time I open the picker I expect to have the images selected based on assetIdentifier Code: var config = PHPickerConfiguration(photoLibrary: .shared()) config.selectionLimit = 10 config.filter = .images config.preselectedAssetIdentifiers = images.compactMap(\.assetID) let picker = PHPickerViewController(configuration: config) picker.delegate = self present(picker, animated: true) But on iOS 26.1 they aren't selected. On lower iOS version all works fine. Does anybody faced with similar issue?
Topic: UI Frameworks SubTopic: UIKit
Replies
8
Boosts
7
Views
698
Activity
1w
EditMode & EditButton not working in a way I expect
I have something that looks like: NavigationStack { List(self.items, id: \.self, selection: self.$selectedItems) { item in NavigationLink { ItemView(item: item) .environment(\.managedObjectContext, self.viewContext) } label: { LabelWithMenuView(object: item) { ptr in self.labelHandler(item: item, newName: ptr) } } } if self.editMode?.wrappedValue == .active { editButtons } else { TextField("Add Item", text: self.$newItem) .onSubmit { self.addItem() self.newItem = "" } .padding() } } #if os(iOS) .toolbar { EditButton() } .onChange(of: self.editMode?.wrappedValue) { old, new in print("editMode \(old) -> \(new)") } #endif With that layout, the edit button doesn't show up at all; if I put it as part of the List, it does show up, but the first click doesn't do anything; after that, it works, but the onChange handler doesn't show it getting changed, and the editButtons don't go away.
Replies
8
Boosts
2
Views
2.5k
Activity
May ’25
iOS 26 Beta breaks scroll/gesture in SwiftUI chat (worked in iOS 18): Simultaneous gestures & ScrollViewReader issues
Hi all, After upgrading to the iOS 26 beta, the scrolling in my SwiftUI chat view is completely broken. The exact same code works perfectly on iOS 18. Context: I have a chat view using ScrollViewReader and a vertically-reversed ScrollView (with .rotationEffect(.degrees(180))). Each message row (MessageBubble) uses multiple simultaneousGesture handlers: Horizontal drag for swipe-to-reply (and other actions: pin, delete) Long press for showing popover/actions Vertical scroll for normal chat scrolling This was working great on iOS 18. In iOS 26 beta, the vertical scroll is either completely disabled, jittery, or hijacked by the message row’s drag gestures, even though .simultaneousGesture is used (see code below). Minimal Repro Sample MessageListView.swift swift Copy Edit ScrollViewReader { proxy in ScrollView(.vertical, showsIndicators: false) { LazyVStack(spacing: 0) { // ... grouped messages ForEach(...) { ... MessageBubble(...) // see below } Color.clear.frame(height: 8).id("BOTTOM_ANCHOR") } .padding(.horizontal, 4) .rotationEffect(.degrees(180)) } .rotationEffect(.degrees(180)) } MessageBubble.swift struct MessageBubble: View { // ... var body: some View { // horizontal swipe-to-reply gesture let dragGesture = DragGesture(minimumDistance: 10) // ... ZStack { // ... HStack { ... } // ... .simultaneousGesture( DragGesture(minimumDistance: 0) // for long press // ... ) .simultaneousGesture(dragGesture) // for horizontal swipe } // ... } }
Replies
8
Boosts
10
Views
1.3k
Activity
Sep ’25
.glassEffect(_in:) crushing on iOS 26 public beta.
In one of my apps, i am using .glassEffect(_:In) to add glass effect on various elements. The app always crushes when a UI element with glassEffect(_in:) modifier is being rendered. This only happens on device running iOS 26 public beta. I know this for certain because I connected the particular device to xcode and run the app on the device. When i comment out the glassEffect modifier, app doesn't crush. Is it possible to check particular realeases with #available? If not, how should something like this be handled. Also how do i handle such os level erros without the app crushing. Thanks.
Topic: UI Frameworks SubTopic: SwiftUI Tags:
Replies
8
Boosts
0
Views
284
Activity
Nov ’25
A basic DocumentGroup App presents two back "<" buttons on the navigation bar.
Please has anyone found a workaround for duplicate back buttons appearing on the toolbar of a ContentView launched from a DocumentGroup? The problem occurs with Xcode 14.0 running a basic DocumentGroup App on iOS 16.0. To reproduce, simply build a new project using the "Document App" template. Build and run in the iOS/iPadOS simulator or on an iOS/iPadOS device. Two back buttons appear. Only one functions. I've not found a way to eliminate the dud. This problem has occurred throughout the Xcode 14.0 beta program.
Replies
8
Boosts
6
Views
2k
Activity
May ’25