I have noticed that in iOS 14 the UIPickerView has by default a light grey background on the selected Row like shown here.
https://developer.apple.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
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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After two types of objects correctly inserted as nodes in an augmented reality setting, I replicated exactly the same procedure with a third kind of objects that unfortunately refuse to show up. I checked the flow and it is the same as the other objects as well the content of the LocationAnnotation, but there is surely something that escapes me. Could someone help with some ideas?
This is the common code, apart of the class:
func appendInAR(ghostElement: Ghost){
let ghostElementAnnotationLocation=GhostLocationAnnotationNode(ghost: ghostElement)
ghostElementAnnotationLocation.scaleRelativeToDistance = true
sceneLocationView.addLocationNodeWithConfirmedLocation(locationNode: ghostElementAnnotationLocation)
shownGhostsAnnotations.append(ghostElementAnnotationLocation)
}
The following code only ever causes shouldDrawInsertionPoint to be printed (no drawInsertionPoint), but even if that method returns false, the blinking insertion point is still drawn. On the other hand, with TextKit 1 it works as expected.
Is there a way to hide the default insertion point in TextKit 2? My app draws its own.
I've filed FB13684251.
class TextView: NSTextView {
override var shouldDrawInsertionPoint: Bool {
print("shouldDrawInsertionPoint")
return false
}
override func drawInsertionPoint(in rect: NSRect, color: NSColor, turnedOn flag: Bool) {
print("drawInsertionPoint", flag)
}
}
``
Following on from this thread: https://developer.apple.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.
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
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?
Navigation Title no longer showing for first Tab in iOS/iPadOS 26 (Directives) in my app Starship SE Corps when running is Xcode 26 simulator and on iPad device itself running iPadOS 26 beta.
Launch app
Notice Navigation Title “Directives” is missing from top tab in Sidebar and Floating Tab View (iPad) and TabView (iOS).
Navigate to other tabs and Navigation Titles appear as expected.
Worked fine (as expected) in iOS/iPadOS 18.5, but broken in iOS/iPadOS 26.
Reference Feedback: FB17987650
I'm running into a persistent problem with the iOS 18.5 simulator in Xcode 26 beta 2. I have built a very simple test app with a storyboard that includes only a toolbar added to the ViewController scene in the storyboard. The test app runs fine in iOS 26 simulators.When I try to run it in the iOS 18.5 simulator for iPhone Pro or iPad (16), it fails while unarchiving the storyboard (as far as I can tell) with this error message in the Xcode console:
*** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView because no class named TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView was found; the class needs to be defined in source code or linked in from a library (ensure the class is part of the correct target)'
terminating due to uncaught exception of type NSException
CoreSimulator 1043 - Device: iPad (A16) (3E70E25F-8434-4541-960D-1B58EB4037F3) - Runtime: iOS 18.5 (22F77) - DeviceType: iPad (A16)
I'd love a simple workaround for this.
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.
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
}];
Hi,
I’m seeing a crash when running my app on iOS 18 simulators or devices using Xcode 26 beta 3.
My app’s minimum deployment target is iOS 17, and the crash does not happen when running from Xcode 16.4.
The crash occurs specifically at this line:
return UIStoryboard(name: storyboard.rawValue, bundle: nil)
.instantiateViewController(withIdentifier: view.rawValue)
Crash Details:
** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named _TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView_ because no class named _TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView_ was found; the class needs to be defined in source code or linked in from a library (ensure the class is part of the correct target)'
*** First throw call stack:
(0x191c3321c 0x18f0cdabc 0x191c91ea0 0x19d740774 0x19d740a18 0x19d740cac 0x194626680 0x194dbc784 0x19d740890 0x19d740cac 0x1949aadd8 0x19d740890 0x19d740a18 0x19d740cac 0x194802e24 0x1945f008c 0x194ed1808 0x107a8bfa0 0x107a8c05c 0x1945ec128 0x19d740890 0x19d740cac 0x1945eba60 0x19d740890 0x19d740a18 0x19d740cac 0x1945f07dc 0x1945eaea4 0x19492ee80 0x10763de00 0x1076e56fc 0x1076e5674 0x1076e5e04 0x19496108c 0x194f9b9a0 0x1949072c4 0x194f998cc 0x194f9af04 0x19445139c 0x19445ac28 0x194467508 0x1079afaec 0x1079aff5c 0x1944189a0 0x194417be4 0x1944114e4 0x194411404 0x194410ab4 0x19440c1e4 0x191b28a8c 0x191b288a4 0x191b28700 0x191b29080 0x191b2ac3c 0x1ded09454 0x19453d274 0x194508a28 0x1073564f4 0x1b89fff08)
terminating due to uncaught exception of type NSException
The crash occurs immediately at app launch, when attempting to load a storyboard-based UITabBarController.
Works as expected on:
Xcode 16.4 + iOS 18 (simulator/device)
Xcode 26 beta 3 + iOS 26 (simulator/device)
Running from Xcode 26 beta 3 onto iOS 18 simulators or devices and it immediate crash from the particular storyboard
Setup:
Xcode: 26 beta 3
macOS: 15.5
iOS Simulators: iOS 18.5
Minimum deployment target: iOS 17
UIKit-based app (not using SwiftUI)
No custom toolbars or host views in use explicitly
Is this a known compatibility issue when building with the iOS 26 SDK and running on iOS 18?
Are there any workarounds or recommendations for running apps targeting iOS 17+ on iOS 18 simulators when using Xcode 26?
I have a SwiftUI Mac Catalyst app. I create a toolbar like this
NavigationSplitView(columnVisibility: $sceneModel.columnVisibility, preferredCompactColumn: $preferredColumn) {
sidebarView()
} detail: {
contentView()
.toolbar {
ToolbarItemGroup(placement: .topBarTrailing) {
HStack {
Button {
sceneModel.onMaps(sender: self)
} label: {
Image(systemName: "map")
.font(.title2)
}
Button {
sceneModel.onSearch(sender: self)
} label: {
Image(systemName: "magnifyingglass")
.font(.title2)
}
...
}
}
}
}
When my Mac Appearance is set to dark mode and the content under the toolbar is dark the toolbar looks good like this.
But then if I have light content under the toolbar, the glass effect changes to light, but the tint on the icons stays white instead of changing to black and it is hard to see the icon. It looks like this.
When I set the Appearance on my Mac to light, then the toolbar works just fine on both dark and light colored backgrounds.
Does anyone know how I can fix this when the appearance is Dark?
I have an existing Mac app which has evolved through over twenty years of development. It is currently written in a mixture of C++ and Objective-C, with a bit of C and Swift in a few places. For a few years now, I have been tinkering with replacing the UI with SwiftUI. The model has been completely rewritten in Swift and works fine. After a few tries, no version has been working acceptably, so I'm thinking that I need to rethink the architecture.
The UI consists of a window with a master-detail view. The detail view is what users spend most of their time with. It contains a lot of subviews, around 100 typically. Keyboard events affect the display, so I've had a dedicated data structure to hold the state that is needed for displaying all the subviews. Using Instruments, I see that the view seems to recreate the subviews three times per keyboard event, so I'm clearly doing something wrong.
A second factor is that there are a couple of dozen commands that are applicable to the detail view, driven either by menu items, keyboard shortcut, or toolbar button. Adding all of those to the view makes for a massive SwiftUI View, which seems unlikely to be good practice. The current implementation has the controller class broken up with categories, but still they are big classes.
Most SwiftUI stuff on the web is iOS-oriented, and typically has a focus on fairly simple apps, so the whole topic of dealing with menu commands doesn't get a lot of coverage, so I've been doing all that through my own solutions, which are probably nothing like optimal.
What I've been able to find is not particularly helpful for a full-fledged application like mine, so I'm looking for advice on how to structure the app. The existing one is largely MVC, but I've tried a similar approach and a shot at MVVM, but I'm not getting good results so far.
So, pointers, places I can read more, or samples of real-world apps is what I'm after. Anyone?
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.
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?
Description:
I’m encountering an issue where the Apple Watch’s watchOS version is lower than the deployment target specified in my Xcode project.
For example, my Watch device is running watchOS 10.6, but my app’s deployment target is set to watchOS 9.6 or 10.6, and Xcode shows an error stating:
Error: “watchOS version doesn’t match the app’s deployment target.”
Could someone clarify how to properly handle this version mismatch?
Environment:
Xcode 26
iPhone: iOS 18
Apple Watch: watchOS 10.6
Any guidance or best practices would be appreciated.
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
We use SwiftUI's .tabViewBottomAccessory in our iOS apps for displaying an Audio MiniPlayer View (like in the Apple Music App).
TabView(selection: $viewModel.selectedTab) {
// Tabs here
}
.tabViewBottomAccessory {
if viewModel.showAudioMiniPlayer {
MiniPlayerView()
}
}
The Problem
This code works perfectly on iOS 26.0. When viewModel.showAudioMiniPlayer is false, the accessory is completely hidden.
However, on iOS 26.1 (23B5059e), when 'viewModel.showAudioMiniPlayer' becomes false, the MiniPlayerView disappears, but an empty container remains, leaving a blank space above the tab bar.
Is this a known Bug in iOS 26.1 and are there any effective workarounds?
Topic:
UI Frameworks
SubTopic:
SwiftUI
When scrolling a basic NSScrollView there seems to be a sudden jump after each flick. Scrolling does not appear smooth and is disorientating.
A scroll jump seems to happen directly after letting go of a scroll flick using a trackpad/mouse. Right at that moment the scroll turns into a momentum scroll, slowly decreasing the speed. But the first frame after the gesture the content jumps forward, more than what is expected.
Observations:
Counterintuitively, scrolling appears to be smoother when disabling NSScrollView.isCompatibleWithResponsiveScrolling. If disabled using a custom NSScrollView subclass there is no large jump anymore.
Scrolling also appears to be smoother using a SwiftUI ScrollView. I assume that has the same behaviour as a disabled isCompatibleWithResponsiveScrolling
Ironically a WKWebView scrolls much smoother. No sudden jump is observable. It also seems to scroll with faster acceleration, but the individual frames do appear smoother. Why is this better than a native NSScrollView?
Elastic scrolling at the bounds of the scroll view also appears much smoother for WKWebViews. When pulling to refresh there is a jump for NSScrollView/SwiftUI, but not for WKWebView.
When using an NSScrollView with isCompatibleWithResponsiveScrolling disabled, scrolling appears just as smooth as WKWebView on macOS 13 Ventura and below. On macOS 14 Sonoma scrolling behaviour is suddenly different.
Please see a sample project with 4 different scroll views side by side:
https://github.com/floorish/ScrollTest
Screen recordings show the sudden jumps when scrolling and when elastic scrolling.
Tested on Intel & Arm Macs, macOS 11 Big Sur through 15 Sequoia, built with Xcode 16.
Should isCompatibleWithResponsiveScrolling be disabled on Sonoma+? Are there any drawbacks?
There is also no overdraw anymore since Monterey, as described in https://developer.apple.com/library/archive/releasenotes/AppKit/RN-AppKitOlderNotes/#10_9Scrolling
Even with responsive scrolling disabled, why is WKWebView scrolling much smoother than NSScrollView?
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?