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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[iOSAppOnMac] ShareKit: Crashes in SHKItemIsPDF() or -[SHKSaveToFilesSharingService saveFileURL:completion:]
I have a custom document-based iOS app that also runs on macOS. After implementing -activityItemsConfiguration to enable sharing from the context menu, I found that the app crashes on macOS when selecting Share… from the context menu and then selecting Save (i.e. Save to Files under iOS). This problem does not occur on iOS, which behaves correctly. - (id<UIActivityItemsConfigurationReading>)activityItemsConfiguration { NSItemProvider * provider = [[NSItemProvider alloc] initWithContentsOfURL:self.document.presentedItemURL]; UIActivityItemsConfiguration * configuration = [UIActivityItemsConfiguration activityItemsConfigurationWithItemProviders:@[ provider ]]; // XXX crashes with com.apple.share.System.SaveToFiles return configuration; } Additionally, I found that to even reach this crash, the workaround implemented in the NSItemProvider (FBxxx) category of the sample project is needed. Without this, the app will crash much earlier, due to SHKItemIsPDF() erroneously invoking -pathExtension on an NSItemProvider. This appears to be a second bug in Apple’s private ShareKit framework. #import <UniformTypeIdentifiers/UniformTypeIdentifiers.h> @implementation NSItemProvider (FBxxx) // XXX SHKItemIsPDF() invokes -pathExtension on an NSItemProvider (when running under macOS, anyway) -> crash - (NSString *)pathExtension { return self.registeredContentTypes.firstObject.preferredFilenameExtension; } @end Again, this all works fine on iOS (17.5) but crashes when the exact same app build is running on macOS (14.5). I believe these bugs are Apple's. Any idea how to avoid the crash? Is there a way to disable the "Save to Files" option in the sharing popup? I filed FB13819800 with a sample project that demonstrates the crash on macOS. I was going to file a TSI to get this resolved, but I see that DTS is not responding to tech support incidents until after WWDC.
Topic: UI Frameworks SubTopic: UIKit
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730
Jul ’25
Observation feedback loop on simple Map() view declaration
Project minimum iOS deployment is set to 16.4. When running this simple code in console we receive "Observation tracking feedback loop detected!" and map is unusable. Run code: Map(coordinateRegion: .constant(.init())) Console report: ... Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_TtGC7SwiftUI21UIKitPlatformViewHostGVS_P10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS2_P10$24ce3fc8014AnnotationData____: 0x10acc2d00; baseClass = _TtGC5UIKit22UICorePlatformViewHostGV7SwiftUIP10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS3_P10$24ce3fc8014AnnotationData____; frame = (0 0; 353 595); anchorPoint = (0, 0); tintColor = UIExtendedSRGBColorSpace 0.333333 0.333333 0.333333 1; layer = <CALayer: 0x12443a430>> Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> Observation tracking feedback loop detected! Make a symbolic breakpoint at UIObservationTrackingFeedbackLoopDetected to catch this in the debugger. Refer to the console logs for details about recent invalidations; you can also make a symbolic breakpoint at UIObservationTrackingInvalidated to catch invalidations in the debugger. Object receiving repeated [layout] invalidations: <_TtGC7SwiftUI21UIKitPlatformViewHostGVS_P10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS2_P10$24ce3fc8014AnnotationData____: 0x10acc2d00; baseClass = _TtGC5UIKit22UICorePlatformViewHostGV7SwiftUIP10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS3_P10$24ce3fc8014AnnotationData____; frame = (0 0; 353 595); anchorPoint = (0, 0); tintColor = UIExtendedSRGBColorSpace 0.333333 0.333333 0.333333 1; layer = <CALayer: 0x12443a430>> Observation tracking feedback loop detected! Make a symbolic breakpoint at UIObservationTrackingFeedbackLoopDetected to catch this in the debugger. Refer to the console logs for details about recent invalidations; you can also make a symbolic breakpoint at UIObservationTrackingInvalidated to catch invalidations in the debugger. Object receiving repeated [layout] invalidations: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> IDE: Xcode 26 Beta 3 Testing device: iPhone 15 Pro iOS 26 Beta 3 MacOS: Tahoe 26 Beta 3
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Jul ’25
.disabled() doesn't VISUALLY disable buttons inside ToolbarItem on iOS 26 devices
[Also submitted as FB19313064] The .disabled() modifier doesn't visually disable buttons inside a ToolbarItem container on iOS 26.0 (23A5297i) devices. The button looks enabled, but tapping it doesn't trigger the action. When deployment target is lowered to iOS 18 and deployed to an iOS 18 device, it works correctly. It still fails on an iOS 26 device, even with an iOS 18-targeted build. This occurs in both the Simulator and on a physical device. Screen Recording Code struct ContentView: View { @State private var isButtonDisabled = false private var osTitle: String { let version = ProcessInfo.processInfo.operatingSystemVersion return "iOS \(version.majorVersion)" } var body: some View { NavigationStack { VStack { Button("Body Button") { print("Body button tapped") } .buttonStyle(.borderedProminent) .disabled(isButtonDisabled) Toggle("Disable buttons", isOn: $isButtonDisabled) Spacer() } .padding() .navigationTitle("Device: \(osTitle)") .navigationBarTitleDisplayMode(.large) .toolbar { ToolbarItem { Button("Toolbar") { print("Toolbar button tapped") } .buttonStyle(.borderedProminent) .disabled(isButtonDisabled) } } } } }
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570
Oct ’25
tabBarMinimizeBehavior not working if subview has TabView with .tabViewStyle(.page)
We are using a TabView as the TabBarController in our app for main navigation. On one of the tabs we have a view that consists of a TabView with .tabViewStyle(.page) in order to scroll horizontally between pages inside of that specific tab. The .tabBarMinimizeBehavior(.onScrollDown) works on all the other TabItem views, but for this one it does not recognise any vertical scrolling in any of the pages, in order to minimize the TabBar. I believe this is a bug? If we don't wrap the views inside the TabView with .page style, we are able to get the expected behaviour using the tabBarMinimizeBehavior. Please let us know if this is going to be fixed in a future iOS 26 beta release.
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262
Jul ’25
iOS 26 Liquid Glass not showing
I’m not seeing Liquid Glass on any standard components. A month ago around July 17th I ran our app and saw Liquid Glass on our tab view and various standard components. Those components have not been changed and yet I’m no longer seeing Liquid Glass in our app at all. Components that were previously liquid glass but now are not include TabView and back navigation buttons. I set the UIDesignRequiresCompatibility key explicitly to false but no luck. I was seeing this in Beta 7 and Beta 8 on a real device and on a sim.
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450
Oct ’25
Small Size Icons and NSToolbar on MacOS 12.0 Monterey -- can it work?
I noticing that Monterey defaults to the NSWindowToolbarStyleAutomatic / NSWindowToolbarStyleUnified toolbar style, which suppresses the "use Small Size" menu item and customization checkbox. So I've set the window to use NSWindowToolbarStyleExpanded. However, the toolbar will no longer change to a smaller icon size, as it did in MacOS 10.14, 10.15, and 11.0. I've tried to set the toolbar item sizing to "Automatic" for all of our toolbar icons, but that results in bad positioning in both Regular and Small Size mode -- the height is way too big. The native size of the icon .png files are 128 x 128. What's odd is that if I resize the window with the toolbar to be wider, the NSToolbarItems in the overflow area will be displayed in the toolbar are 128 x 128, where the rest of the toolbar icons get displayed as a 32 x 32 icon. The only way to get it to layout remotely correct is to make the NSToolbarItem to have an explicit minimum size of 24 x 24 and maximum size of 32 x 32. And that USED to allow "small size", but on Monterey, it no longer does. Anyone had any success with small size icons on Monterey?
Topic: UI Frameworks SubTopic: AppKit Tags:
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1.4k
Feb ’26
In a List row on macOS, changing Image color when row is selected
When using an image in a List item, you sometimes want to tint that image, but only if the item isn’t selected. When it’s selected, you usually want the contents of the list item to be all-white, for contrast. The backgroundProminence Environment value ostensibly exists for this purpose, but in my tests, it never seems to change. Am I doing something wrong? Is there an alternative solution? For instance, this code: import SwiftUI struct ProminentBackgroundInList: View { var body: some View { List(selection: .constant(0)) { ListItem().tag(0) ListItem().tag(1) } } } struct ListItem: View { @Environment(\.backgroundProminence) var backgroundProminence var body: some View { HStack { Image(systemName: "person.fill") .foregroundStyle(backgroundProminence == .standard ? .orange : .primary) Text("Person") } } } #Preview { ProminentBackgroundInList() } Produces this result:
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215
Feb ’26
Popover in Toolbar Causes Crash in Catalyst App on macOS 26
Hi everyone, I’ve encountered an issue where using a popover inside the toolbar of a Catalyst app causes a crash on macOS 26 beta 5 with Xcode 26 beta 5. Here’s a simplified code snippet: import SwiftUI struct ContentView: View { @State private var isPresentingPopover = false var body: some View { NavigationStack { VStack { } .padding() .toolbar { ToolbarItem { Button(action: { isPresentingPopover.toggle() }) { Image(systemName: "bubble") } .popover(isPresented: $isPresentingPopover) { Text("Hello") .font(.largeTitle) .padding() } } } } } } Steps to reproduce: Create a new iOS app using Xcode 26 beta 5. Enable Mac Catalyst (Match iPad). Add the above code to show a Popover from a toolbar button. Run the app on macOS 26, then click the toolbar button. The app crashes immediately upon clicking the toolbar button. Has anyone else run into this? Any workarounds or suggestions would be appreciated! Thanks!
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433
Jan ’26
AsyncImage - Cancelled Loading before View is Visible
I have been playing around with the new AsyncImage Api in SwiftUI I am using the initialiser that passes in a closure with the AsyncImagePhase, to view why an image may not load, when I looked at the error that is passed in if the phase is failure, the localised description of the error is "Cancelled" but this is happening before the view is being displayed. I am loading these images in a list, I imagine I am probably doing something which is causing the system to decide to cancel the loading, but I cannot see what. Are there any tips to investigate this further?
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14k
Jan ’26
.safeAreaBar(edge: .bottom), animation lag on appear/disappear
When I try to show/hide the content in .safeAreaBar(edge: .bottom), especially the content with a large height, the background animation of the toolbar is very laggy. iOS 26 RC Feedback ID - FB19768797 import SwiftUI struct ContentView: View { @State private var isShown: Bool = false var body: some View { NavigationStack { Button("Toggle") { withAnimation { isShown.toggle() } } ScrollView(.vertical) { ForEach(0..<100) { index in Text("\(index)") .padding() .border(.blue) .background(.blue) .frame(maxWidth: .infinity) } } .scrollEdgeEffectStyle(.soft, for: .bottom) .safeAreaBar(edge: .bottom) { if isShown { Text("Safe area bar") .padding(64) .background(.red) } } } } } #Preview { ContentView() }
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226
Feb ’26
Persisting User Settings with SwiftData
I was wondering what the recommended way is to persist user settings with SwiftData? It seems the SwiftData API is focused around querying for multiple objects, but what if you just want one UserSettings object that is persisted across devices say for example to store the user's age or sorting preferences. Do we just create one object and then query for it or is there a better way of doing this? Right now I am just creating: import SwiftData @Model final class UserSettings { var age: Int = 0 var sortAtoZ: Bool = true init(age: Int = 0, sortAtoZ: Bool = true) { self.age = age self.sortAtoZ = sortAtoZ } } In my view I am doing as follows: import SwiftUI import SwiftData struct SettingsView: View { @Environment(\.modelContext) var context @Query var settings: [UserSettings] var body: some View { ForEach(settings) { setting in let bSetting = Bindable(setting) Toggle("Sort A-Z", isOn: bSetting.sortAtoZ) TextField("Age", value: bSetting.age, format: .number) } .onAppear { if settings.isEmpty { context.insert(UserSettings(age: 0, sortAtoZ: true)) } } } } Unfortunately, there are two issues with this approach: I am having to fetch multiple items when I only ever want one. Sometimes when running on a new device it will create a second UserSettings while it is waiting for the original one to sync from CloudKit. AppStorage is not an option here as I am looking to persist for the user across devices and use CloudKit syncing.
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Jan ’26
How to do full width .sheet() on iOS 26+ with small presentation detents?
For certain contexts, I'd like to still have my .sheet() be full width even when it's at a small height. In iOS 26, the sheet is inset from the edges at small detents and expands to full width at larger detents. For example, I have a view where I have a .sheet() that has a height of about 200pts and it contains a horizontally scrolling picker that extends past the bounds of the screen. I'd like the .sheet to expand all the way to the edge when at these small detents, like it would previous to iOS 26. Is it possible to configure this? This change will break a number of existing designs :( A new ViewModifier such as enum PresentationWidth { case dynamic, fixed } func presentationWidth(_ width: PresentationWidth) -> some View would be very nice.
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Jun ’25
iOS 26 @FocusState Doesn't Work If TextField Is In Toolbar
When I add a TextField with @FocusState to a toolbar, I noticed that setting focus = false doesn't cause the form to lose focus If I move the TextField out of the toolbar setting focus = false works fine. How can I unfocus the text field when the cancel button is tapped? Minimal example tested on Xcode Version 26.0 beta 6 (17A5305f): import SwiftUI struct ContentView: View { @State private var text: String = "" @FocusState private var focus: Bool var body: some View { NavigationStack { List { Text("Test List") } .toolbar { ToolbarItem(placement: .bottomBar) { TextField("Test", text: $text) .padding(.horizontal) .focused($focus) } ToolbarItem(placement: .bottomBar) { Button(role: .cancel) { focus = false // THIS DOESN'T WORK! } } } } } } #Preview { ContentView() }```
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Sep ’25
Sheet-like presentation on the side on iPad
Is there a way to get a sheet on the side over an interactive view with a proper glass background on iPad? Ideally, including being able to drag the sheet between medium/large-height sizes (like a sheet with presentationDetents on iPhone), similar to the Maps app: I tried the NavigationSplitView like in the NavigationCookbook example. This is somewhat like it, but it's too narrow (sidebar-like) and doesn't get the full navigation bar: I also played around with .sheet and .presentationDetents and the related modifiers, thinking I could make the sheet appear to the side; but no luck here. It seems to have all the correct behaviors, but it's always presented form-like in the center: Example code for the sheet: import SwiftUI import MapKit struct ContentView: View { var body: some View { Map() .sheet(isPresented: .constant(true)) { NavigationStack { VStack { Text("Hello") NavigationLink("Show Foo") { Text("Foo") .navigationTitle("Foo") .containerBackground(Color.clear, for: .navigation) } } } .presentationDetents([.medium, .large]) .presentationBackgroundInteraction(.enabled) } } } I also tried placing the NavigationStack as an overlay and putting a .glassEffect behind it. From the first sight, this looks okay-ish on beta 3, but seems prone to tricky gotchas and edge cases around the glass effects and related transitions. Seems like not a good approach to me, building such navigational containers myself has been a way too big time-sink for me in the past... Anyway, example code for the overlay approach: import SwiftUI import MapKit struct ContentView: View { var body: some View { Map() .overlay(alignment: .topLeading) { NavigationStack { VStack { Text("Hello") NavigationLink("Show Foo") { ScrollView { VStack { ForEach(1...30, id: \.self) { no in Button("Hello world") {} .buttonStyle(.bordered) } } .frame(maxWidth: .infinity) } .navigationTitle("Foo") .containerBackground(Color.clear, for: .navigation) } } .containerBackground(Color.clear, for: .navigation) } .frame(width: 400) .frame(height: 600) .glassEffect(.regular, in: .rect(cornerRadius: 22)) .padding() } } } Do I miss something here or is this not possible currently with built-in means of the SwiftUI API?
Topic: UI Frameworks SubTopic: SwiftUI
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Sep ’25
What is the difference between .safeAreaInset and the new .safeAreaBar?
I've been trying out the new .safeAreaBar modifier for iOS 26, but I cannot seem to notice any difference between that and .safeAreaInset? The documentation says: the bar modifier configures the content to support views to automatically extend the edge effect of any scroll view’s the bar adjusts safe area of. But I can't seem to see that in action.
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Jul ’25
CGContextDrawShading broken on MacOS Tahoe for apps built with MacOS SDK older than 14.5
On MacOS Tahoe (26.0 26.1 or 26.2), when loading an application that was built with an SDK older than version SDK 14.5, all CGContextDrawShading calls to draw onto the screen (inside of NSView drawRect:) fail silently, filling the path with a single color instead of a gradient. If rendering into a local CGBitmapContext instead of the NSView context on Tahoe, CGShading works as expected. On MacOS 15 and earlier, CGShading works as expected too. If the app is built with SDK version 14.5 or newer, CGShading works normally on MacOS Tahoe. For recent applications, they can of course be rebuilt with a more recent version of the SDK, which fixes the problem. However for Audio Units or any other type of plug-in, even if they are built with the "appropriate" SDK, if they are loaded inside of a legacy application that was built with an older SDK, the problem arises, which customers complain about and do not understand. I have noticed that there had been a few changes in MacOS Tahoe regarding the CGShading APIs, could this problem be related? If this issue cannot be fixed in an upcoming MacOS update, is there maybe a "defaults" value that can be changed? (since this behaviour is specific to a sdk version, I guess that it is triggered by a version check in the Frameworks and that there is a "defaults" value that can be changed to avoid this specific behaviour, as it is usually the case via a DefaultValueFunction)? I have already opened a feedback regarding this issue, but maybe someone already has a solution for this problem?
Topic: UI Frameworks SubTopic: AppKit
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Jan ’26
[iOSAppOnMac] ShareKit: Crashes in SHKItemIsPDF() or -[SHKSaveToFilesSharingService saveFileURL:completion:]
I have a custom document-based iOS app that also runs on macOS. After implementing -activityItemsConfiguration to enable sharing from the context menu, I found that the app crashes on macOS when selecting Share… from the context menu and then selecting Save (i.e. Save to Files under iOS). This problem does not occur on iOS, which behaves correctly. - (id<UIActivityItemsConfigurationReading>)activityItemsConfiguration { NSItemProvider * provider = [[NSItemProvider alloc] initWithContentsOfURL:self.document.presentedItemURL]; UIActivityItemsConfiguration * configuration = [UIActivityItemsConfiguration activityItemsConfigurationWithItemProviders:@[ provider ]]; // XXX crashes with com.apple.share.System.SaveToFiles return configuration; } Additionally, I found that to even reach this crash, the workaround implemented in the NSItemProvider (FBxxx) category of the sample project is needed. Without this, the app will crash much earlier, due to SHKItemIsPDF() erroneously invoking -pathExtension on an NSItemProvider. This appears to be a second bug in Apple’s private ShareKit framework. #import <UniformTypeIdentifiers/UniformTypeIdentifiers.h> @implementation NSItemProvider (FBxxx) // XXX SHKItemIsPDF() invokes -pathExtension on an NSItemProvider (when running under macOS, anyway) -> crash - (NSString *)pathExtension { return self.registeredContentTypes.firstObject.preferredFilenameExtension; } @end Again, this all works fine on iOS (17.5) but crashes when the exact same app build is running on macOS (14.5). I believe these bugs are Apple's. Any idea how to avoid the crash? Is there a way to disable the "Save to Files" option in the sharing popup? I filed FB13819800 with a sample project that demonstrates the crash on macOS. I was going to file a TSI to get this resolved, but I see that DTS is not responding to tech support incidents until after WWDC.
Topic: UI Frameworks SubTopic: UIKit
Replies
8
Boosts
3
Views
730
Activity
Jul ’25
Observation feedback loop on simple Map() view declaration
Project minimum iOS deployment is set to 16.4. When running this simple code in console we receive "Observation tracking feedback loop detected!" and map is unusable. Run code: Map(coordinateRegion: .constant(.init())) Console report: ... Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_TtGC7SwiftUI21UIKitPlatformViewHostGVS_P10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS2_P10$24ce3fc8014AnnotationData____: 0x10acc2d00; baseClass = _TtGC5UIKit22UICorePlatformViewHostGV7SwiftUIP10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS3_P10$24ce3fc8014AnnotationData____; frame = (0 0; 353 595); anchorPoint = (0, 0); tintColor = UIExtendedSRGBColorSpace 0.333333 0.333333 0.333333 1; layer = <CALayer: 0x12443a430>> Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> Observable object key path '\_UICornerProvider.<computed 0x00000001a2768bc0 (Optional<UICoordinateSpace>)>' changed; performing invalidation for [layout] of: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> Observation tracking feedback loop detected! Make a symbolic breakpoint at UIObservationTrackingFeedbackLoopDetected to catch this in the debugger. Refer to the console logs for details about recent invalidations; you can also make a symbolic breakpoint at UIObservationTrackingInvalidated to catch invalidations in the debugger. Object receiving repeated [layout] invalidations: <_TtGC7SwiftUI21UIKitPlatformViewHostGVS_P10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS2_P10$24ce3fc8014AnnotationData____: 0x10acc2d00; baseClass = _TtGC5UIKit22UICorePlatformViewHostGV7SwiftUIP10$1a57c8f9c32PlatformViewRepresentableAdaptorGV15_MapKit_SwiftUI8_MapViewGSaVS3_P10$24ce3fc8014AnnotationData____; frame = (0 0; 353 595); anchorPoint = (0, 0); tintColor = UIExtendedSRGBColorSpace 0.333333 0.333333 0.333333 1; layer = <CALayer: 0x12443a430>> Observation tracking feedback loop detected! Make a symbolic breakpoint at UIObservationTrackingFeedbackLoopDetected to catch this in the debugger. Refer to the console logs for details about recent invalidations; you can also make a symbolic breakpoint at UIObservationTrackingInvalidated to catch invalidations in the debugger. Object receiving repeated [layout] invalidations: <_MapKit_SwiftUI._SwiftUIMKMapView: 0x10ae8ce00; frame = (0 0; 353 595); clipsToBounds = YES; autoresize = W+H; layer = <CALayer: 0x113beb7e0>> IDE: Xcode 26 Beta 3 Testing device: iPhone 15 Pro iOS 26 Beta 3 MacOS: Tahoe 26 Beta 3
Replies
2
Boosts
3
Views
265
Activity
Jul ’25
.disabled() doesn't VISUALLY disable buttons inside ToolbarItem on iOS 26 devices
[Also submitted as FB19313064] The .disabled() modifier doesn't visually disable buttons inside a ToolbarItem container on iOS 26.0 (23A5297i) devices. The button looks enabled, but tapping it doesn't trigger the action. When deployment target is lowered to iOS 18 and deployed to an iOS 18 device, it works correctly. It still fails on an iOS 26 device, even with an iOS 18-targeted build. This occurs in both the Simulator and on a physical device. Screen Recording Code struct ContentView: View { @State private var isButtonDisabled = false private var osTitle: String { let version = ProcessInfo.processInfo.operatingSystemVersion return "iOS \(version.majorVersion)" } var body: some View { NavigationStack { VStack { Button("Body Button") { print("Body button tapped") } .buttonStyle(.borderedProminent) .disabled(isButtonDisabled) Toggle("Disable buttons", isOn: $isButtonDisabled) Spacer() } .padding() .navigationTitle("Device: \(osTitle)") .navigationBarTitleDisplayMode(.large) .toolbar { ToolbarItem { Button("Toolbar") { print("Toolbar button tapped") } .buttonStyle(.borderedProminent) .disabled(isButtonDisabled) } } } } }
Replies
7
Boosts
3
Views
570
Activity
Oct ’25
tabBarMinimizeBehavior not working if subview has TabView with .tabViewStyle(.page)
We are using a TabView as the TabBarController in our app for main navigation. On one of the tabs we have a view that consists of a TabView with .tabViewStyle(.page) in order to scroll horizontally between pages inside of that specific tab. The .tabBarMinimizeBehavior(.onScrollDown) works on all the other TabItem views, but for this one it does not recognise any vertical scrolling in any of the pages, in order to minimize the TabBar. I believe this is a bug? If we don't wrap the views inside the TabView with .page style, we are able to get the expected behaviour using the tabBarMinimizeBehavior. Please let us know if this is going to be fixed in a future iOS 26 beta release.
Replies
0
Boosts
3
Views
262
Activity
Jul ’25
iOS 26 Liquid Glass not showing
I’m not seeing Liquid Glass on any standard components. A month ago around July 17th I ran our app and saw Liquid Glass on our tab view and various standard components. Those components have not been changed and yet I’m no longer seeing Liquid Glass in our app at all. Components that were previously liquid glass but now are not include TabView and back navigation buttons. I set the UIDesignRequiresCompatibility key explicitly to false but no luck. I was seeing this in Beta 7 and Beta 8 on a real device and on a sim.
Replies
2
Boosts
1
Views
450
Activity
Oct ’25
Small Size Icons and NSToolbar on MacOS 12.0 Monterey -- can it work?
I noticing that Monterey defaults to the NSWindowToolbarStyleAutomatic / NSWindowToolbarStyleUnified toolbar style, which suppresses the "use Small Size" menu item and customization checkbox. So I've set the window to use NSWindowToolbarStyleExpanded. However, the toolbar will no longer change to a smaller icon size, as it did in MacOS 10.14, 10.15, and 11.0. I've tried to set the toolbar item sizing to "Automatic" for all of our toolbar icons, but that results in bad positioning in both Regular and Small Size mode -- the height is way too big. The native size of the icon .png files are 128 x 128. What's odd is that if I resize the window with the toolbar to be wider, the NSToolbarItems in the overflow area will be displayed in the toolbar are 128 x 128, where the rest of the toolbar icons get displayed as a 32 x 32 icon. The only way to get it to layout remotely correct is to make the NSToolbarItem to have an explicit minimum size of 24 x 24 and maximum size of 32 x 32. And that USED to allow "small size", but on Monterey, it no longer does. Anyone had any success with small size icons on Monterey?
Topic: UI Frameworks SubTopic: AppKit Tags:
Replies
2
Boosts
2
Views
1.4k
Activity
Feb ’26
In a List row on macOS, changing Image color when row is selected
When using an image in a List item, you sometimes want to tint that image, but only if the item isn’t selected. When it’s selected, you usually want the contents of the list item to be all-white, for contrast. The backgroundProminence Environment value ostensibly exists for this purpose, but in my tests, it never seems to change. Am I doing something wrong? Is there an alternative solution? For instance, this code: import SwiftUI struct ProminentBackgroundInList: View { var body: some View { List(selection: .constant(0)) { ListItem().tag(0) ListItem().tag(1) } } } struct ListItem: View { @Environment(\.backgroundProminence) var backgroundProminence var body: some View { HStack { Image(systemName: "person.fill") .foregroundStyle(backgroundProminence == .standard ? .orange : .primary) Text("Person") } } } #Preview { ProminentBackgroundInList() } Produces this result:
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2
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0
Views
215
Activity
Feb ’26
Issue with preselecting images on iOS 26.1 in photo library
I have checked the sample project from the documentation page and noticed there is an issue with image/images not being preselected. The issue happens on iOS 26.1 and above (checked iOS 26.2 beta). I couldn't find any change to the PhotoPicker in the documentation.
Topic: UI Frameworks SubTopic: UIKit
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4
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2
Views
341
Activity
Feb ’26
Popover in Toolbar Causes Crash in Catalyst App on macOS 26
Hi everyone, I’ve encountered an issue where using a popover inside the toolbar of a Catalyst app causes a crash on macOS 26 beta 5 with Xcode 26 beta 5. Here’s a simplified code snippet: import SwiftUI struct ContentView: View { @State private var isPresentingPopover = false var body: some View { NavigationStack { VStack { } .padding() .toolbar { ToolbarItem { Button(action: { isPresentingPopover.toggle() }) { Image(systemName: "bubble") } .popover(isPresented: $isPresentingPopover) { Text("Hello") .font(.largeTitle) .padding() } } } } } } Steps to reproduce: Create a new iOS app using Xcode 26 beta 5. Enable Mac Catalyst (Match iPad). Add the above code to show a Popover from a toolbar button. Run the app on macOS 26, then click the toolbar button. The app crashes immediately upon clicking the toolbar button. Has anyone else run into this? Any workarounds or suggestions would be appreciated! Thanks!
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5
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2
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433
Activity
Jan ’26
AsyncImage - Cancelled Loading before View is Visible
I have been playing around with the new AsyncImage Api in SwiftUI I am using the initialiser that passes in a closure with the AsyncImagePhase, to view why an image may not load, when I looked at the error that is passed in if the phase is failure, the localised description of the error is "Cancelled" but this is happening before the view is being displayed. I am loading these images in a list, I imagine I am probably doing something which is causing the system to decide to cancel the loading, but I cannot see what. Are there any tips to investigate this further?
Replies
16
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8
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14k
Activity
Jan ’26
.safeAreaBar(edge: .bottom), animation lag on appear/disappear
When I try to show/hide the content in .safeAreaBar(edge: .bottom), especially the content with a large height, the background animation of the toolbar is very laggy. iOS 26 RC Feedback ID - FB19768797 import SwiftUI struct ContentView: View { @State private var isShown: Bool = false var body: some View { NavigationStack { Button("Toggle") { withAnimation { isShown.toggle() } } ScrollView(.vertical) { ForEach(0..<100) { index in Text("\(index)") .padding() .border(.blue) .background(.blue) .frame(maxWidth: .infinity) } } .scrollEdgeEffectStyle(.soft, for: .bottom) .safeAreaBar(edge: .bottom) { if isShown { Text("Safe area bar") .padding(64) .background(.red) } } } } } #Preview { ContentView() }
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1
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3
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226
Activity
Feb ’26
Persisting User Settings with SwiftData
I was wondering what the recommended way is to persist user settings with SwiftData? It seems the SwiftData API is focused around querying for multiple objects, but what if you just want one UserSettings object that is persisted across devices say for example to store the user's age or sorting preferences. Do we just create one object and then query for it or is there a better way of doing this? Right now I am just creating: import SwiftData @Model final class UserSettings { var age: Int = 0 var sortAtoZ: Bool = true init(age: Int = 0, sortAtoZ: Bool = true) { self.age = age self.sortAtoZ = sortAtoZ } } In my view I am doing as follows: import SwiftUI import SwiftData struct SettingsView: View { @Environment(\.modelContext) var context @Query var settings: [UserSettings] var body: some View { ForEach(settings) { setting in let bSetting = Bindable(setting) Toggle("Sort A-Z", isOn: bSetting.sortAtoZ) TextField("Age", value: bSetting.age, format: .number) } .onAppear { if settings.isEmpty { context.insert(UserSettings(age: 0, sortAtoZ: true)) } } } } Unfortunately, there are two issues with this approach: I am having to fetch multiple items when I only ever want one. Sometimes when running on a new device it will create a second UserSettings while it is waiting for the original one to sync from CloudKit. AppStorage is not an option here as I am looking to persist for the user across devices and use CloudKit syncing.
Replies
3
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0
Views
595
Activity
Jan ’26
How to do full width .sheet() on iOS 26+ with small presentation detents?
For certain contexts, I'd like to still have my .sheet() be full width even when it's at a small height. In iOS 26, the sheet is inset from the edges at small detents and expands to full width at larger detents. For example, I have a view where I have a .sheet() that has a height of about 200pts and it contains a horizontally scrolling picker that extends past the bounds of the screen. I'd like the .sheet to expand all the way to the edge when at these small detents, like it would previous to iOS 26. Is it possible to configure this? This change will break a number of existing designs :( A new ViewModifier such as enum PresentationWidth { case dynamic, fixed } func presentationWidth(_ width: PresentationWidth) -> some View would be very nice.
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1
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3
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179
Activity
Jun ’25
iOS 26 @FocusState Doesn't Work If TextField Is In Toolbar
When I add a TextField with @FocusState to a toolbar, I noticed that setting focus = false doesn't cause the form to lose focus If I move the TextField out of the toolbar setting focus = false works fine. How can I unfocus the text field when the cancel button is tapped? Minimal example tested on Xcode Version 26.0 beta 6 (17A5305f): import SwiftUI struct ContentView: View { @State private var text: String = "" @FocusState private var focus: Bool var body: some View { NavigationStack { List { Text("Test List") } .toolbar { ToolbarItem(placement: .bottomBar) { TextField("Test", text: $text) .padding(.horizontal) .focused($focus) } ToolbarItem(placement: .bottomBar) { Button(role: .cancel) { focus = false // THIS DOESN'T WORK! } } } } } } #Preview { ContentView() }```
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1
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2
Views
295
Activity
Sep ’25
Sheet-like presentation on the side on iPad
Is there a way to get a sheet on the side over an interactive view with a proper glass background on iPad? Ideally, including being able to drag the sheet between medium/large-height sizes (like a sheet with presentationDetents on iPhone), similar to the Maps app: I tried the NavigationSplitView like in the NavigationCookbook example. This is somewhat like it, but it's too narrow (sidebar-like) and doesn't get the full navigation bar: I also played around with .sheet and .presentationDetents and the related modifiers, thinking I could make the sheet appear to the side; but no luck here. It seems to have all the correct behaviors, but it's always presented form-like in the center: Example code for the sheet: import SwiftUI import MapKit struct ContentView: View { var body: some View { Map() .sheet(isPresented: .constant(true)) { NavigationStack { VStack { Text("Hello") NavigationLink("Show Foo") { Text("Foo") .navigationTitle("Foo") .containerBackground(Color.clear, for: .navigation) } } } .presentationDetents([.medium, .large]) .presentationBackgroundInteraction(.enabled) } } } I also tried placing the NavigationStack as an overlay and putting a .glassEffect behind it. From the first sight, this looks okay-ish on beta 3, but seems prone to tricky gotchas and edge cases around the glass effects and related transitions. Seems like not a good approach to me, building such navigational containers myself has been a way too big time-sink for me in the past... Anyway, example code for the overlay approach: import SwiftUI import MapKit struct ContentView: View { var body: some View { Map() .overlay(alignment: .topLeading) { NavigationStack { VStack { Text("Hello") NavigationLink("Show Foo") { ScrollView { VStack { ForEach(1...30, id: \.self) { no in Button("Hello world") {} .buttonStyle(.bordered) } } .frame(maxWidth: .infinity) } .navigationTitle("Foo") .containerBackground(Color.clear, for: .navigation) } } .containerBackground(Color.clear, for: .navigation) } .frame(width: 400) .frame(height: 600) .glassEffect(.regular, in: .rect(cornerRadius: 22)) .padding() } } } Do I miss something here or is this not possible currently with built-in means of the SwiftUI API?
Topic: UI Frameworks SubTopic: SwiftUI
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3
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2
Views
418
Activity
Sep ’25
What format do the app-open-doc functions expect from their "String" parameters?
NSApplicationDelegate.application(_:open:) gets the files it needs to read from the file URLs given. There are similar older functions that use a String to identify the file. What format are those strings expecting? A path name? An URL?
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1
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0
Views
138
Activity
Jan ’26
reality Converter Where is the download link? I can't find it
reality Converter Where is the download link? I can't find it
Replies
1
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1
Views
1.2k
Activity
Jan ’26
What is the difference between .safeAreaInset and the new .safeAreaBar?
I've been trying out the new .safeAreaBar modifier for iOS 26, but I cannot seem to notice any difference between that and .safeAreaInset? The documentation says: the bar modifier configures the content to support views to automatically extend the edge effect of any scroll view’s the bar adjusts safe area of. But I can't seem to see that in action.
Replies
1
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2
Views
311
Activity
Jul ’25
CGContextDrawShading broken on MacOS Tahoe for apps built with MacOS SDK older than 14.5
On MacOS Tahoe (26.0 26.1 or 26.2), when loading an application that was built with an SDK older than version SDK 14.5, all CGContextDrawShading calls to draw onto the screen (inside of NSView drawRect:) fail silently, filling the path with a single color instead of a gradient. If rendering into a local CGBitmapContext instead of the NSView context on Tahoe, CGShading works as expected. On MacOS 15 and earlier, CGShading works as expected too. If the app is built with SDK version 14.5 or newer, CGShading works normally on MacOS Tahoe. For recent applications, they can of course be rebuilt with a more recent version of the SDK, which fixes the problem. However for Audio Units or any other type of plug-in, even if they are built with the "appropriate" SDK, if they are loaded inside of a legacy application that was built with an older SDK, the problem arises, which customers complain about and do not understand. I have noticed that there had been a few changes in MacOS Tahoe regarding the CGShading APIs, could this problem be related? If this issue cannot be fixed in an upcoming MacOS update, is there maybe a "defaults" value that can be changed? (since this behaviour is specific to a sdk version, I guess that it is triggered by a version check in the Frameworks and that there is a "defaults" value that can be changed to avoid this specific behaviour, as it is usually the case via a DefaultValueFunction)? I have already opened a feedback regarding this issue, but maybe someone already has a solution for this problem?
Topic: UI Frameworks SubTopic: AppKit
Replies
1
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1
Views
189
Activity
Jan ’26
Instruments: Trace file had no SwiftUI data
using Version 26.2 (17C52) I often get "Trace file had no SwiftUI data" why so?
Replies
5
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1
Views
337
Activity
Dec ’25