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.
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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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.
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)
}
I work on a universal app that targets both iPhone and iPad. Our iPad app currently requires full screen. When testing on the latest iPadOS 26 beta, we see the following warning printed to the console:
Update the Info.plist: 1) `UIRequiresFullScreen` will soon be ignored. 2) Support for all orientations will soon be required.
It will take a fair amount of effort to update our app to properly support presentation in a resizable window. We wanted to gauge how urgent this change is. Our testing has shown that iPadOS 26 supports our app in a non-resizable window.
Can someone from Apple provide any guidance as to how soon “soon” is? Will UIRequiresFullScreen be ignored in iPadOS 26? Will support for all orientations be required in iPadOS 26?
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?
I have added a UICollectionViewCell to my storyboard, and I added a UILabel to my UICollectionViewCell in storyboard. I have created a cell registration using UICollectionView.CellRegistration and have implemented the cellProvider closure for the datasource which dequeue a collection view cell of type TapLabelCollectionViewCell(I have subclassed the cell in my storyboard to this class).
In my TapLabelCollectionViewCell, I am trying to set the tap gesture recogniser on the label, but the label appears nil, which I've connected using an @IBOutlet. Why is this and how can I fix it?
My code :
// UI View Controller:
class TapGridViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
tapGridCollectionView.collectionViewLayout = createLayout()
configureDataSource()
applySnapshot()
}
func configureDataSource() {
let cellRegistration = UICollectionView.CellRegistration<TapLabelCollectionViewCell, CellItem>(handler: {
(cell: TapLabelCollectionViewCell, indexPath: IndexPath, item: CellItem) in
cell.taplabel.text = String(item.labelCount)
})
dataSource = UICollectionViewDiffableDataSource(collectionView: tapGridCollectionView, cellProvider: { (collectionView: UICollectionView, indexPath: IndexPath, item: CellItem) in
let cell = collectionView.dequeueConfiguredReusableCell(using: cellRegistration, for: indexPath, item: item)
cell.delegate = self
cell.index = indexPath.row
return cell
})
}
}
// UI Collection View Cell:
protocol TapLabelCollectionViewCellDelegate: AnyObject {
func incrementNumberOfTaps(index: Int)
}
class TapLabelCollectionViewCell: UICollectionViewCell {
@IBOutlet var taplabel: UILabel!
var delegate: TapLabelCollectionViewCellDelegate?
var index: Int!
static let identifier = "tapLabelCellIdentifier"
override init(frame: CGRect) {
super.init(frame: frame)
setUpTapGestureRecognizer()
}
required init?(coder: NSCoder) {
super.init(coder: coder)
}
func setUpTapGestureRecognizer() {
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(incrementNumberOfTaps))
print("tap Label,", taplabel)
taplabel.addGestureRecognizer(tapGestureRecognizer)
}
@objc func incrementNumberOfTaps() {
delegate?.incrementNumberOfTaps(index: index)
}
}
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.
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
}];
We're trying to implement a backup/restore data feature in our business productivity iPad app using UIDocumentPickerViewController and AppleArchive, but discovered odd behavior of [UIDocumentPickerViewController initForOpeningContentTypes: asCopy:YES] when reading large archive files from a USB drive.
We've duplicated this behavior with iPadOS 16.6.1 and 17.7 when building our app with Xcode 15.4 targeting minimum deployment of iPadOS 16. We haven't tested this with bleeding edge iPadOS 18.
Here's our Objective-C code which presents the picker:
NSArray* contentTypeArray = @[UTTypeAppleArchive];
UIDocumentPickerViewController* docPickerVC = [[UIDocumentPickerViewController alloc] initForOpeningContentTypes:contentTypeArray asCopy:YES];
docPickerVC.delegate = self;
docPickerVC.allowsMultipleSelection = NO;
docPickerVC.shouldShowFileExtensions = YES;
docPickerVC.modalPresentationStyle = UIModalPresentationPopover;
docPickerVC.popoverPresentationController.sourceView = self.view;
[self presentViewController:docPickerVC animated:YES completion:nil];
The UIDocumentPickerViewController remains visible until the selected external archive file has been copied from the USB drive to the app's local tmp sandbox. This may take several seconds due to the slow access speed of the USB drive. During this time the UIDocumentPickerViewController does NOT disable its tableview rows displaying files found on the USB drive. Even the most patient user will tap the desired filename a second (or third or fourth) time since the user's initial tap appears to have been ignored by UIDocumentPickerViewController, which lacks sufficient UI feedback showing it's busy copying the selected file.
When the user taps the file a second time, UIDocumentPickerViewController apparently begins to copy the archive file once again. The end result is a truncated copy of the selected file based on the time between taps. For instance, a 788 MB source archive may be copied as a 56 MB file. Here, the UIDocumentPickerDelegate receives a 56 MB file instead of the original 788 MB of data.
Not surprisingly, AppleArchive fails to decrypt the local copy of the archive because it's missing data. Instead of failing gracefully, AppleArchive crashes in AAArchiveStreamClose() (see forums post 765102 for details).
Does anyone know if there's a workaround for this strange behavior of UIDocumentPickerViewController?
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
I’m developing a share extension for iOS 26 with Xcode 26. When the extension’s sheet appears, it always shows a full white background, even though iOS 26 introduces a new “Liquid Glass” effect for partial sheets.
Expected:
The sheet background should use the iOS 26 glassmorphism effect as seen in full apps.
Actual behavior:
Custom sheets in my app get the glass effect, but the native system sheet in the share extension always opens as plain white.
Steps to reproduce:
Create a share extension using UIKit
Present any UIViewController as the main view
Set modalPresentationStyle = .pageSheet (or leave as default)
Observe solid white background, not glassmorphism
Sample code:
swift
override func viewDidLoad() {
super.viewDidLoad()
view.backgroundColor = .clear
preferredContentSize = CGSize(width: UIScreen.main.bounds.width, height: 300)
}
Troubleshooting attempted:
Tried adding UIVisualEffectView with system blur/materials
Removed all custom backgrounds
Set modalPresentationStyle explicitly
Questions:
Is it possible to enable or force the Liquid Glass effect in share extensions on iOS 26?
Is this a limitation by design or a potential bug?
Any workaround to make extension sheet backgrounds match system glass appearance?
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?
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 am using a LayzVStack embedded into a ScrollView. The list items are fetched from a core data store by using a @FetchResult or I tested it also with the new @Query command coming with SwiftData.
The list has one hundred items 1, 2, 3, ..., 100.
The user scrolled the ScrollView so that items 50, 51, ... 60 are visible on screen.
Now new data will be fetched from the server and updates the CoreData or SwiftData model. When I add new items to the end of the list (e.g 101, 102, 103, ...) then the ScrollView is keeping its position.
Opposite to this when I add new items to the top (0, -1, -2, -3, ...) then the ScrollView scrolls down.
Is there a way with the new SwiftData and SwiftUI ScrollView modifiers to update my list model without scrolling like with UIKit where you can query and set the scroll offset pixel wise?
Hello!
My question is about 1) if we can use any and or all accessibility features within a sandboxed app and 2) what steps we need to take to do so.
Using accessibility permissions, my app was working fine in Xcode. It used NSEvent.addGlobalMonitorForEvents and localMoniter, along with CGEvent.tapCreate. However, after downloading the same app from the App Store, the code was not working. I believe this was due to differences in how permissions for accessibility are managed in Xcode compared to production.
Is it possible for my app to get access to all accessibility features, while being distributed on the App Store though? Do I need to add / request any special entitlements like com.apple.security.accessibility?
Thanks so much for the help. I have done a lot of research on this online but found some conflicting information, so wanted to post here for a clear answer.
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?
I have a UIKit app with a custom navigation controller. I want my view title to go up into the navigation bar when the user scrolls down the screen. It looks like UIScrollEdgeElementContainerInteraction should do what I want, but I am having trouble using it.
Below is a sample, where a header view represents a title. I added the interaction to the header view, but it seems to have no effect. Am I missing a step? Perhaps I misunderstand what this is supposed to do, or perhaps I do not understand the preconditions to make this work.
I am hoping someone can tell me what I am doing wrong, or point me to some working sample code.
Thank you.
John
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var headerView: UIVisualEffectView!
var tableView: UITableView!
var interaction: UIScrollEdgeElementContainerInteraction!
override func viewDidLoad() {
super.viewDidLoad()
self.tableView = UITableView()
self.tableView.translatesAutoresizingMaskIntoConstraints = false
self.tableView.topEdgeEffect.style = .soft
self.tableView.delegate = self
self.tableView.dataSource = self
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
self.view.addSubview(self.tableView)
self.view.addConstraints([
self.tableView.topAnchor.constraint(equalTo: self.view.topAnchor),
self.tableView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
self.tableView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
self.tableView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor),
])
self.headerView = UIVisualEffectView(effect: UIGlassEffect(style: .regular))
self.headerView.translatesAutoresizingMaskIntoConstraints = false
self.headerView.backgroundColor = .green
self.view.addSubview(self.headerView)
self.view.addConstraints([
self.headerView.topAnchor.constraint(equalTo: self.view.topAnchor),
self.headerView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
self.headerView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
self.headerView.heightAnchor.constraint(equalToConstant: 100.0),
])
let label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.text = "my text"
self.headerView.contentView.addSubview(label)
self.headerView.contentView.addConstraints([
label.centerXAnchor.constraint(equalTo: self.headerView.contentView.centerXAnchor),
label.centerYAnchor.constraint(equalTo: self.headerView.contentView.centerYAnchor),
])
self.interaction = UIScrollEdgeElementContainerInteraction()
self.interaction.scrollView = self.tableView
self.interaction.edge = .top
self.headerView.addInteraction(self.interaction)
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 100
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = "row \(indexPath.row + 1)"
return cell
}
}
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
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 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