Construct and manage graphical, event-driven user interfaces for iOS or tvOS apps using UIKit.

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Strong Password Suggestion Clears Other Secure Fields
I can't seem to find information on this but this is causing a critical bug where the Strong Password suggestion sheet presents on any secure field (UIKit) and clears the others when closing it. This means the user cannot enter a password when there is a secure confirm password field because switching fields clears the other. This looks to be a recent issue but I can't tell when this was introduced or if this is SDK / OS version related. I am finding it in both Xcode 26.2 and 16.4 when running on device (iOS 26.2.1 and XC 26 simulators). Code to reproduce: class ViewController: UIViewController { override func loadView() { let v = UIStackView() v.axis = .vertical v.layoutMargins = .init(top: 16, left: 16, bottom: 16, right: 16) v.isLayoutMarginsRelativeArrangement = true view = v let t1 = UITextField() t1.textContentType = .username t1.placeholder = "Username" v.addArrangedSubview(t1) let t2 = UITextField() t2.isSecureTextEntry = true t2.textContentType = .newPassword t2.placeholder = "Password" t2.clearsOnInsertion = false t2.clearsOnBeginEditing = false t2.passwordRules = nil t2.clearButtonMode = .always v.addArrangedSubview(t2) let t3 = UITextField() t3.isSecureTextEntry = true t3.textContentType = .newPassword t3.placeholder = "Confirm Password" t3.clearsOnInsertion = false t3.clearsOnBeginEditing = false t3.passwordRules = nil t3.clearButtonMode = .always v.addArrangedSubview(t3) v.addArrangedSubview(UIView()) } } No matter what textContentType is used the strong password still forcefully breaks the flow and blocks the user.
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The largeTitle of UINavigationBar disappears after scrolling on iOS 26.1
My project uses the UINavigationController's largeTitle on the latest iOS 26.1, but I found that when I set the backgroundColor, the navigation bar's largeTitle disappeared after switching between normal and large titles. I checked the latest documentation and consulted AI, but I have not found any good solutions. For the demo project, please refer to FB20986869
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X button disappeared on iPadOS 26.4 in MFMailComposeViewController
I’m using MFMailComposeViewController to send emails from my app. Since updating to iPadOS 26.4, there is no way to cancel the mail composer because the “X” button in the top-left corner has disappeared. On iPhone with iOS 26.4, everything still seems to work as expected. Is this a known issue, or am I missing something? Has anyone else experienced this, or found a workaround?
Topic: UI Frameworks SubTopic: UIKit
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ExcUserFault and corrupted data when using UIImage#heicData
Over the last two weeks, I’ve had sporadic reports from users who suddenly have a corrupt image in the database for my app. It’s only affecting a few users and may possibly have been fixed with iOS 26.4.1 (I’m not sure). In any case, this started suddenly with the release of iOS 26.4 - our app has not been changed in several months. But I wanted to share what’s happening in case others are experiencing this. My app lets users import photos from the camera roll, photo albums, etc. Once the user has selected an image, the app saves this to a SQLite3 database using “image.heicData()”. For the four or five users who have been affected by this problem, the heicData call returns successfully, with a non-nil Data value. But the image itself is corrupt and unreadable. When the user tries to later open a screen containing the image, the app crashes. I’ve had to manually guide each user through tracking down and removing the affected item or items to resolve it, which is a bad experience for them and time-consuming for us. Our app crashes when it tries to read the image (using “UIImage(data: heicData)”). All users who have this problem have had an ExcUserFault file in their crash reports with our app name in it. It's not possible to symbolicate this file but i've included an excerpt at the bottom of this post: I was able to extract some raw data saved when this error occurs. When you run “file corrupt_image.heic”, you get: AmigaOS bitmap font "rtypheic", fc_YSize 0, 35001 elements which definitely doesn’t seem right. On a valid HEIC file, i get: ISO Media, HEIF Image HEVC Main or Main Still Picture Profile Is anyone else experience this? Or does anyone else have any suggestions about what could be happening? I submitted feedback FB22667639 about this. ExcUserFault example Exception Type: EXC_GUARD Exception Subtype: GUARD_TYPE_USER Exception Message: namespc 7 reason_code 0x0000000000000009 Exception Codes: 0x6000000000000007, 0x0000000000000009 Termination Reason: Namespace LIBXPC, Code 9, XPC_EXIT_REASON_FAULT Thread 0: 0 ??? 0x231fa997c 0x180000000 + 2985990524 1 ??? 0x197eb98b4 0x180000000 + 401316020 2 ??? 0x197ec4e04 0x180000000 + 401362436 3 ??? 0x197ec5ea0 0x180000000 + 401366688 4 ??? 0x19066bdb8 0x180000000 + 275168696 5 ??? 0x19066b968 0x180000000 + 275167592 6 ??? 0x19b5c19a4 0x180000000 + 459020708 7 ??? 0x19b5cfa2c 0x180000000 + 459078188 8 ??? 0x19b5cf838 0x180000000 + 459077688 9 ??? 0x197ec7c74 0x180000000 + 401374324 10 ??? 0x197ec991c 0x180000000 + 401381660 11 ??? 0x1bd74222c 0x180000000 + 1031021100 12 ??? 0x1bd744ba4 0x180000000 + 1031031716 13 ??? 0x1bd730e18 0x180000000 + 1030950424 14 ??? 0x1bd7458f8 0x180000000 + 1031035128 15 ??? 0x1bd730e18 0x180000000 + 1030950424 16 ??? 0x1bd731ae4 0x180000000 + 1030953700 17 ??? 0x1bd73bdac 0x180000000 + 1030995372 18 ??? 0x1bd73b6ac 0x180000000 + 1030993580 19 ??? 0x1e23283b0 0x180000000 + 1647477680 20 ??? 0x1e23278c0 0x180000000 + 1647474880
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ToolbarItemGroup With Palette Style Cannot Present a View Controller While the Context Menu Is Visible
When I set up a toolbar item group with multiple options and set the controlGroupStyle as .palette, and when one of the options are supposed to present a view controller, I get the following error Attempt to present <UINavigationController: 0x101813200> on <ProjectName.HomeTabBarViewController: 0x10701bc00> (from <UINavigationController: 0x107821000>) which is already presenting <_UIContextMenuActionsOnlyViewController: 0x1035c19d0>. So basically the context menu we see is under the hood a view controller that is being presented. Is there a right way of fixing it, or is it maybe something that will be fixed by Apple? This is how I set up the ToolbarItemGroup on SwiftUI and the view model ultimately presents another UINavigationController that has a UIHostingController as its view controller: .toolbar { ToolbarItemGroup(placement: .topBarTrailing) { Button("ft_commons_edit".localised, systemImage: "pencil") { viewModel.didTapEditAction() } Button("ft_commons_delete".localised, systemImage: "trash") { viewModel.didTapDeleteAction() } } label: { Image("edit-icon") .resizable() .frame(width: 24.0, height: 24.0) } } .controlGroupStyle(.palette) This is how the view looks like when presentation fails: As a workaround, I found two options that work well. I’d like to share them and ask for recommendations, just to make sure they won’t cause any unexpected issues later on: Option 1: Access the top most visible view controller and attempt presenting on it This requires the following extension: extension UIViewController { func topMostViewController() -> UIViewController { if let presentedViewController = self.presentedViewController { return presentedViewController.topMostViewController() } else if let navigationController = self as? UINavigationController, let topViewController = navigationController.topViewController { return topViewController.topMostViewController() } else if let tabBarController = self as? UITabBarController, let selectedViewController = tabBarController.selectedViewController { return selectedViewController.topMostViewController() } else { return self } } } Then called as: navigationController.topMostViewController().present(exerciseEditingNavController, animated: true) Option 2: Call dismiss before attempting to present anything This also works fine, even without any delay, the menu is first dismissed and presentation works fine afterwards, code example: navigationController.dismiss(animated: true) navigationController.present(exerciseEditingNavController, animated: true) I feel like Option 1 would be the better choice, because if this context menu is ever no longer treated as a view controller and direct presentation starts working, Option 1 would still behave correctly by presenting from the topmost visible view controller. Option 2, on the other hand, could introduce a bug by dismissing an unrelated view controller if the context menu is no longer represented as a view controller at that point. I would appreciate any advice from anyone who has experienced this, or from Apple developers. Thanks
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`safeAreaInsets` but for system bars?
Is there a safeAreaInsets equivalent that only tracks system bars (tab bars, status bars, side bars, toolbars, and navigation bars) and is not affected by notches? I'm asking this because the iPadOS tab bar can appear either on the top, bottom, or left (modally or non-modally) in various configurations, including sidebarAdaptable and when the window size is small on iPadOS; the tab bar's frame is not really reliable in this case, and while the safe area insets works, it also includes the notches / rounded window corners...
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MacCatalyst, UIScene and the green zoom/fullscreen button
Please show me where I’ve gone amiss in MacCatalyst and UIScenes with regard to the macOS green zoom/fullscreen button. Originally the MacCatalyst App used a secondary AppKit bundle for its NSWindow work, but at some point in time AppStore Connect complained about this secondary bundle which prevented new App uploads. To continue receiving green button notifications I switched to UINSWindow. That worked. Now that I’m forced to use UIScenes I’m in a pickle: a click on the green button forces an automatic jump to fullscreen, nothing I can do about it AFAIK. A poor, poor compromise would be to disable the green button but I have no idea how even to do that. I’d like my App to exist in two states, any suggestions? Thanks.
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CarPlay: AVSpeechUtterance not speaking/playing audio in some cars
I am having an issue with the code that I posted below. I capture voice in my CarPlay app, then allow the user to have it read back to them using AVSpeechUtterance. This works fine on some cars, but many of my beta testers report no audio being played. I have also experienced this in a rental car where the audio was either too quiet or the audio didn't play. Does anyone see any issue with the code that I posted? This is for CarPlay specifically. class CarPlayTextToSpeechService: NSObject, ObservableObject, AVSpeechSynthesizerDelegate { private var speechSynthesizer = AVSpeechSynthesizer() static let shared = CarPlayTextToSpeechService() /// Completion callback private var completionCallback: (() -> Void)? override init() { super.init() speechSynthesizer.delegate = self } func configureAudioSession() { do { try AVAudioSession.sharedInstance().setCategory(.playback, mode: .voicePrompt, options: [.duckOthers, .interruptSpokenAudioAndMixWithOthers, .allowBluetoothHFP]) } catch { print("Failed to set audio session category: \(error.localizedDescription)") } } public func speak(_ text: String, completion: (() -> Void)? = nil) { self.configureAudioSession() // Store the completion callback self.completionCallback = completion Task(priority: .high) { let speechUtterance = AVSpeechUtterance(string: text) let langCode = Locale.preferredLocalLanguageCountryCode if langCode == "en-US" { speechUtterance.voice = AVSpeechSynthesisVoice(identifier: AVSpeechSynthesisVoiceIdentifierAlex) } else { speechUtterance.voice = AVSpeechSynthesisVoice(language: langCode) } try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation) speechSynthesizer.speak(speechUtterance) } } func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) { Task { stopSpeech() try AVAudioSession.sharedInstance().setActive(false) } // Call completion callback if available self.completionCallback?() self.completionCallback = nil } func stopSpeech() { speechSynthesizer.stopSpeaking(at: .immediate) } }
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Touch events responding is delayed when 3D touch is ON
Update:I create a plain app and a keyboard extension to test the touch events. The plain app can respond the touch immediately but the keyboard extension has about 1s lag.--------------------------------------------------------Hi, Recently I test my app on the iPhone 6s and the iPhone 6sp with 3D touch ON. I notice 3 strange things:When my finger touches on the left edge of the screen, the app responds the touch events after about 1s delay.When I touch on the left edge of the screen and push with force, the 3D touch task switcher shows.But if I tap the left edge of the screen, the app can respond the touch events immediately.I test many other 3rd apps and system apps (notes, contacts) this phenomenon exists too with 3D touch ON. When I turn 3D touch OFF, the app responds the touch events immediately as usual.On the other hand, the system keyboard responds the touch events immediately whether the 3D touch is ON or OFF.I guess it’s because the touch events responding conflicts with the 3D touch task switcher. I have tried many 3D touch APIs but have no effects.Does anyone have an idea? Thanks!
Topic: UI Frameworks SubTopic: UIKit Tags:
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How to add Paste button in UIMenu such that the system "allow app to paste" prompt does not appear
Apps that try to access the contents of the pasteboard cause a system prompt to appear asking the user "AppName" would like to paste from "OtherAppName" Do you want to allow this? Don't Allow Paste Allow Paste This prompt does not appear if you implement a UIPasteControl and the user taps it to signal intent to paste, but this control cannot be placed into a UIMenu. I read this could be achieved with UIAction.Identifiers like .paste or .newFromPasteboard but the prompt still appears with the following code. What's the trick? override func viewDidLoad() { super.viewDidLoad() title = "TestPaste" view.backgroundColor = .systemBackground let imageView = UIImageView() imageView.translatesAutoresizingMaskIntoConstraints = false imageView.contentMode = .scaleAspectFit imageView.clipsToBounds = true view.addSubview(imageView) NSLayoutConstraint.activate([ imageView.topAnchor.constraint(equalTo: view.topAnchor), imageView.leadingAnchor.constraint(equalTo: view.leadingAnchor), imageView.trailingAnchor.constraint(equalTo: view.trailingAnchor), imageView.bottomAnchor.constraint(equalTo: view.bottomAnchor) ]) navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Add", image: UIImage(systemName: "plus"), menu: UIMenu(children: [ UIAction(identifier: .paste) { _ in imageView.image = UIPasteboard.general.image } ])) }
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Setting alternate app icon fails with "Ressource temporarily not available"
Switching alternative app icons previously worked in my app and I did not notice when it broke. However now the completion handler consistently returns this error if feeding with either an existing app icon name or a fictional one. Is this a regression I should file a bug report for or am I doing something wrong here? Include all app icon assets is enabled in the target Below you can see the error, the .icon files placed in the project navigator, my code and the top of the Info.plist Thank you Button("Update icon") { UIApplication.shared.setAlternateIconName("appIcon_Heart") { error in if let error { print(error) } } } Error Domain=NSPOSIXErrorDomain Code=35 "Resource temporarily unavailable" UserInfo={_LSFile=LSIconAlertManager.m, _LSLine=113, _LSFunction=-[LSIconAlertManager iconChangeAlertTokenForIdentity:error:]} Xcode seems to create the correct Info.plist entries. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>BGTaskSchedulerPermittedIdentifiers</key> <array> <string>newReleasesBackgroundTask</string> </array> <key>BuildMachineOSBuild</key> <string>24G90</string> <key>CFBundleDevelopmentRegion</key> <string>de</string> <key>CFBundleDisplayName</key> <string>Hörspielzentrale</string> <key>CFBundleExecutable</key> <string>Hoerspielzentrale</string> <key>CFBundleIcons</key> <dict> <key>CFBundleAlternateIcons</key> <dict> <key>appIcon_Heart</key> <dict> <key>CFBundleIconName</key> <string>appIcon_Heart</string> </dict> <key>appIcon_RedNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_RedNoCircle</string> </dict> <key>appIcon_WhiteNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_WhiteNoCircle</string> </dict> </dict> <key>CFBundlePrimaryIcon</key> <dict> <key>CFBundleIconFiles</key> <array> <string>AppIcon60x60</string> </array> <key>CFBundleIconName</key> <string>AppIcon</string> </dict> </dict> <key>CFBundleIcons~ipad</key> <dict> <key>CFBundleAlternateIcons</key> <dict> <key>appIcon_Heart</key> <dict> <key>CFBundleIconName</key> <string>appIcon_Heart</string> </dict> <key>appIcon_RedNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_RedNoCircle</string> </dict> <key>appIcon_WhiteNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_WhiteNoCircle</string> </dict> </dict> <key>CFBundlePrimaryIcon</key> <dict> <key>CFBundleIconFiles</key> <array> <string>AppIcon60x60</string> <string>AppIcon76x76</string> </array> <key>CFBundleIconName</key> <string>AppIcon</string> </dict> </dict>
Topic: UI Frameworks SubTopic: UIKit
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Invalid parameter not satisfying: parentEnvironment != nil
Since the beta releases of iPadOS 26 we have been having some crashes about Invalid parameter not satisfying: parentEnvironment != nil We got to contact a couple of users and we found out that the crash appears when entering a screen in a UINavigationController with the iPad device connected to a Magic Keyboard. If the device is not connected to the keyboard then nothing happens and everything works ok. From our end we haven't managed to reproduce the crash so I am pasting part of the stacktrace if it can be of any help. 3 UIKitCore 0x19dfd2e14 -[_UIFocusContainerGuideFallbackItemsContainer initWithParentEnvironment:childItems:] + 224 (_UIFocusContainerGuideFallbackItemsContainer.m:23) 4 UIKitCore 0x19dae3108 -[_UIFocusContainerGuideImpl _searchForFocusRegionsInContext:] + 368 (_UIFocusGuideImpl.m:246) 5 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 6 UIKitCore 0x19db28900 -[_UIFocusMapSnapshot addRegionsInContainers:] + 160 (_UIFocusMapSnapshot.m:545) 7 UIKitCore 0x19d1313dc _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 632 (_UIFocusRegion.m:143) 8 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 9 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 10 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 11 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 12 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 13 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 14 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 15 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 16 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 17 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 18 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 19 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 20 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 21 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 22 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 23 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 24 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 25 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 26 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 27 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 28 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 29 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 30 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 31 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 32 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 33 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 34 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 35 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 36 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 37 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 38 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 39 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 40 UIKitCore 0x19d132e08 -[_UIFocusMapSnapshot _capture] + 424 (_UIFocusMapSnapshot.m:403) 41 UIKitCore 0x19db2675c -[_UIFocusMapSnapshot _initWithSnapshotter:mapArea:searchArea:] + 476 (_UIFocusMapSnapshot.m:171) 42 UIKitCore 0x19d130dcc -[_UIFocusMapSnapshotter captureSnapshot] + 192 (_UIFocusMapSnapshotter.m:137) 43 UIKitCore 0x19db2045c -[_UIFocusMap _inferredDefaultFocusItemInEnvironment:] + 136 (_UIFocusMap.m:168) 44 UIKitCore 0x19daffd2c -[_UIFocusEnvironmentPreferenceEnumerationContext _inferPreferencesForEnvironment:] + 140 (_UIFocusEnvironmentPreferenceEnumerator.m:313) 45 UIKitCore 0x19d127ab4 -[_UIFocusEnvironmentPreferenceEnumerationContext _resolvePreferredFocusEnvironments] + 104 (_UIFocusEnvironmentPreferenceEnumerator.m:250) 46 UIKitCore 0x19d127394 -[_UIFocusEnvironmentPreferenceEnumerationContext preferredEnvironments] + 36 (_UIFocusEnvironmentPreferenceEnumerator.m:184) 47 UIKitCore 0x19d126e94 _enumeratePreferredFocusEnvironments + 400 (_UIFocusEnvironmentPreferenceEnumerator.m:503)
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iOS 26 – Clock app Timer picker skips final hour on very fast swipe
Hi everyone, I found what looks like a picker issue on iOS 26 in the Clock app’s Timer screen, and I’m also seeing what appears to be the same behavior in UIPickerView in my own app. What I’m Doing I’m testing the Timer picker in the built-in Clock app. When I swipe very quickly on the hours component, trying to reach the maximum value together with minutes and seconds: 23 hours 59 minutes 59 seconds I noticed that the picker does not always land on the expected final value. I’m seeing a very similar issue with UIPickerView as well, especially in: public func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) When swiping very quickly to the end, the selected/logged row can be inconsistent with the final visible value. Expected Behavior When swiping quickly and stopping at the end, the Timer should correctly select: 23 hours, 59 minutes, 59 seconds Likewise, in UIPickerView, didSelectRow should reflect the actual final selected row/value after the wheel settles. Actual Behavior (iOS 26) If I swipe quickly enough on the hours component, when the picker reaches: 23 hours, 59 minutes, 59 seconds it appears to count from 22 hours instead of 23 hours. So the final selected duration is effectively off by one hour, even though the wheel visually reaches the maximum end position. I’m facing the same kind of issue with UIPickerView too. In particular, inside: public func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) when performing a very fast swipe, the reported row may behave unexpectedly near the end of the range. Additional Notes I reproduced this in the Clock app Specifically on the Timer screen The issue happens when the swipe velocity is high enough I also face the same issue with UIPickerView in my own app Question Has anyone else seen this behavior in iOS 26? Is this a known UIPickerView / wheel-picker issue, or a regression in the Timer picker logic? Any guidance would be appreciated. Thanks! P.S. I do have a video showing the issue, but I can’t upload it here. If someone could let me know the best way to share it, I’d appreciate it.
Topic: UI Frameworks SubTopic: UIKit
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UITabBar (Liquid Glass) rendering breaks when UITabBarController is recreated while fully obscured by a fullscreen modal
I’m seeing a rendering issue with UITabBarController on iOS 26 (Liquid Glass), and I’d like to confirm whether others can reproduce this or have a workaround. Summary If a UITabBarController is recreated while it is fully hidden behind a fullscreen modal, the tab bar renders incorrectly after dismissal. Selected tab becomes nearly invisible Unselected tabs appear to show both selected and unselected tint colors Looks like multiple rendering states are composited incorrectly This only happens with: iOS 26 (Liquid Glass enabled) UIKit UITabBarController It does not reproduce with SwiftUI TabView. Minimal Reproduction Code This is a complete, minimal example: import UIKit // MARK: - Root class RootViewController: UIViewController { private var tabBar: UITabBarController? private var modalPresented = false override func viewDidLoad() { super.viewDidLoad() installTabBar() } override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) // Present once on first appear, simulating an app-launch login flow. if !modalPresented { modalPresented = true presentModal() } } private func installTabBar() { let tab = UITabBarController() tab.viewControllers = [ makeTab(title: "Tab 1", systemImage: "1.circle"), makeTab(title: "Tab 2", systemImage: "2.circle"), ] tabBar = tab addChild(tab) view.addSubview(tab.view) tab.view.frame = view.bounds tab.didMove(toParent: self) } private func makeTab(title: String, systemImage: String) -> UIViewController { let vc = UIViewController() vc.view.backgroundColor = .systemBackground vc.tabBarItem = UITabBarItem(title: title, image: UIImage(systemName: systemImage), tag: 0) return vc } private func presentModal() { let modal = ModalViewController() modal.onDismiss = { [weak self] in // Recreate the tab bar while it is still fully hidden by the modal. // This seems to trigger incorrect Liquid Glass rendering. self?.tabBar?.willMove(toParent: nil) self?.tabBar?.view.removeFromSuperview() self?.tabBar?.removeFromParent() self?.installTabBar() // ← created while invisible self?.dismiss(animated: true) } modal.modalPresentationStyle = .fullScreen present(modal, animated: true) } } // MARK: - Modal class ModalViewController: UIViewController { var onDismiss: (() -> Void)? override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .systemBackground let button = UIButton(type: .system) button.setTitle("Dismiss", for: .normal) button.titleLabel?.font = .preferredFont(forTextStyle: .title2) button.addTarget(self, action: #selector(dismissTapped), for: .touchUpInside) button.translatesAutoresizingMaskIntoConstraints = false view.addSubview(button) NSLayoutConstraint.activate([ button.centerXAnchor.constraint(equalTo: view.centerXAnchor), button.centerYAnchor.constraint(equalTo: view.centerYAnchor), ]) } @objc private func dismissTapped() { onDismiss?() } } Expected Behavior The tab bar renders normally with correct Liquid Glass appearance: Selected tab is clearly visible Unselected tabs show only inactive tint Actual Behavior Selected tab becomes nearly invisible Unselected tabs show a mix of selected + unselected tint The issue resolves after backgrounding and returning to foreground Observations / Workarounds The issue does not reproduce if: The tab bar is recreated after dismissal: self.dismiss(animated: true) { self.installTabBar() } Using SwiftUI TabView Using a presentation style that does not fully cover the screen (.pageSheet, etc.) Question Has anyone else encountered this? Is there a recommended workaround besides delaying creation until after dismissal? It seems like Liquid Glass rendering may not initialize correctly when the view is attached while fully obscured, but I’m not sure if this is expected behavior or a bug.
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[iOS18]The transition animation stops and cannot be interacted with
The app becomes unresponsive when pushing a new page. The screen is covered by the _UIParallaxOverlayView class, blocking all gestures. Are there any scenarios where the transition animation might suddenly stop mid-process? Or could you provide more information to help me troubleshoot this issue? I noticed: When the issue occurs, the FromViewController is displayed on the screen. The ToViewController also exists in the view tree, but it's not visible on the screen. _UIParallaxOverlayView only appears on iOS 18 and above. The animation appears to be controlled by +[UIView _fluidParallaxTransitionsEnabledWithTraitCollection:], which is _os_feature_enabled_impl("UIKit", "fluid_parallax_transitions"). Reference
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Keyboard focus lost after instantiating an AUv3 in a host on iOS
Dear Apple Support team, I'm reaching out about an issue we're facing in our iOS audio host app on iPad. Keyboard shortcuts from an external hardware keyboard (Bluetooth) work perfectly until we load an AUv3 plugin, then the host suddenly loses all keyboard focus, and key commands stop responding completely. To give you more context: this affects every DAW that supports AUv3. I've tested it in Logic Pro for iOS, Camelot Pro, and AUM. The problem starts right after instantiating any AUv3, causing the keyboard to lose focus and preventing key commands from working. Before that, keyboard events reach our UIView without issues. Notably, this doesn't happen on iOS versions before iOS 26. I've verified it works perfectly on iOS 17 and iOS 18. You can see the full discussion and steps to reproduce in this JUCE forum thread: https://forum.juce.com/t/keyboard-focus-lost-and-keycommands-stop-working-after-instantiating-an-auv3-in-a-juce-based-host-on-ios/68497/5. It seems potentially related to AUv3 sandboxing or iOS UIView focus management. I would really appreciate your help with any insights, known issues, or workarounds. Thanks, Samuele
Topic: UI Frameworks SubTopic: UIKit
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TimePicker numeric pad popover renders as a narrow bar on iPadOS 26.4.1
When tapping the currently selected time in a TimePicker (wheel style) component to invoke the inline numeric pad popover, the popover renders incorrectly on iPadOS 26.4.1 — it appears as a very narrow single-line/bar rather than the full numeric keypad layout. Steps to Reproduce: Run Reminder, create a new reminder and add a custom time Tap the currently selected time value to trigger the numeric pad popover Observe the popover layout Expected Result: A properly sized popover appears containing a full numeric keypad, allowing direct numeric input of the time value — consistent with behavior on iPadOS 18.x Actual Result: The popover appears as an extremely narrow horizontal bar (single line height), making the numeric pad unusable Regression: Works correctly on iPadOS 18.x through iPadOS 26.3. Broken on iPadOS 26.4.1 (Xcode 26.x simulator and/or physical device). https://www.youtube.com/shorts/bd3pYA3B-iI https://www.youtube.com/shorts/wSHzepHBwEY Feedback: FB22517457
Topic: UI Frameworks SubTopic: UIKit
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PSA: UISceneDelegate.openURLContexts called twice sometimes in iOS 26
If you use UISceneDelegate's scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) to handle deep links (such as tapping a widget) you might run into an issue where this callback is called twice in the majority of cases. If you push a view controller in response to this, you might end up with two pushed view controllers, if you do not mitigate this. This is exclusively an issue in iOS 26.0 and works as expected on iOS 18. func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) { /// Add any widget to the home screen that uses the widgetURL modifier and tap them. Most of the time, openURLContexts() will get called twice. /// If you run this project on iOS 18, it's *always* called once as expected. print("openURLContexts \(URLContexts)") } Filed as FB20301454
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iPadOS 26 - Status bar overlaps with navigation bar
Hello, I'm experiencing a navigation bar positioning issue with my UIKit iPad app on iPadOS 26 (23A340) using Xcode 26 (17A321). The navigation bar positions under the status bar initially, and after orientation changes to landscape, it positions incorrectly below its expected location. This occurs on both real device (iPad mini A17 Pro) and simulator. My app uses UIKit + Storyboard with a Root Navigation Controller. A stack overflow post has reproduce the bug event if it's not in the same configuration: https://stackoverflow.com/questions/79752945/xcode-26-beta-6-ipados-26-statusbar-overlaps-with-navigationbar-after-presen I have checked all safe areas and tried changing some constraints, but nothing works. Have you encountered this bug before, or do you need additional information to investigate this issue?
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Strong Password Suggestion Clears Other Secure Fields
I can't seem to find information on this but this is causing a critical bug where the Strong Password suggestion sheet presents on any secure field (UIKit) and clears the others when closing it. This means the user cannot enter a password when there is a secure confirm password field because switching fields clears the other. This looks to be a recent issue but I can't tell when this was introduced or if this is SDK / OS version related. I am finding it in both Xcode 26.2 and 16.4 when running on device (iOS 26.2.1 and XC 26 simulators). Code to reproduce: class ViewController: UIViewController { override func loadView() { let v = UIStackView() v.axis = .vertical v.layoutMargins = .init(top: 16, left: 16, bottom: 16, right: 16) v.isLayoutMarginsRelativeArrangement = true view = v let t1 = UITextField() t1.textContentType = .username t1.placeholder = "Username" v.addArrangedSubview(t1) let t2 = UITextField() t2.isSecureTextEntry = true t2.textContentType = .newPassword t2.placeholder = "Password" t2.clearsOnInsertion = false t2.clearsOnBeginEditing = false t2.passwordRules = nil t2.clearButtonMode = .always v.addArrangedSubview(t2) let t3 = UITextField() t3.isSecureTextEntry = true t3.textContentType = .newPassword t3.placeholder = "Confirm Password" t3.clearsOnInsertion = false t3.clearsOnBeginEditing = false t3.passwordRules = nil t3.clearButtonMode = .always v.addArrangedSubview(t3) v.addArrangedSubview(UIView()) } } No matter what textContentType is used the strong password still forcefully breaks the flow and blocks the user.
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146
Activity
18h
The largeTitle of UINavigationBar disappears after scrolling on iOS 26.1
My project uses the UINavigationController's largeTitle on the latest iOS 26.1, but I found that when I set the backgroundColor, the navigation bar's largeTitle disappeared after switching between normal and large titles. I checked the latest documentation and consulted AI, but I have not found any good solutions. For the demo project, please refer to FB20986869
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4
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484
Activity
22h
X button disappeared on iPadOS 26.4 in MFMailComposeViewController
I’m using MFMailComposeViewController to send emails from my app. Since updating to iPadOS 26.4, there is no way to cancel the mail composer because the “X” button in the top-left corner has disappeared. On iPhone with iOS 26.4, everything still seems to work as expected. Is this a known issue, or am I missing something? Has anyone else experienced this, or found a workaround?
Topic: UI Frameworks SubTopic: UIKit
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4
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352
Activity
1d
ExcUserFault and corrupted data when using UIImage#heicData
Over the last two weeks, I’ve had sporadic reports from users who suddenly have a corrupt image in the database for my app. It’s only affecting a few users and may possibly have been fixed with iOS 26.4.1 (I’m not sure). In any case, this started suddenly with the release of iOS 26.4 - our app has not been changed in several months. But I wanted to share what’s happening in case others are experiencing this. My app lets users import photos from the camera roll, photo albums, etc. Once the user has selected an image, the app saves this to a SQLite3 database using “image.heicData()”. For the four or five users who have been affected by this problem, the heicData call returns successfully, with a non-nil Data value. But the image itself is corrupt and unreadable. When the user tries to later open a screen containing the image, the app crashes. I’ve had to manually guide each user through tracking down and removing the affected item or items to resolve it, which is a bad experience for them and time-consuming for us. Our app crashes when it tries to read the image (using “UIImage(data: heicData)”). All users who have this problem have had an ExcUserFault file in their crash reports with our app name in it. It's not possible to symbolicate this file but i've included an excerpt at the bottom of this post: I was able to extract some raw data saved when this error occurs. When you run “file corrupt_image.heic”, you get: AmigaOS bitmap font "rtypheic", fc_YSize 0, 35001 elements which definitely doesn’t seem right. On a valid HEIC file, i get: ISO Media, HEIF Image HEVC Main or Main Still Picture Profile Is anyone else experience this? Or does anyone else have any suggestions about what could be happening? I submitted feedback FB22667639 about this. ExcUserFault example Exception Type: EXC_GUARD Exception Subtype: GUARD_TYPE_USER Exception Message: namespc 7 reason_code 0x0000000000000009 Exception Codes: 0x6000000000000007, 0x0000000000000009 Termination Reason: Namespace LIBXPC, Code 9, XPC_EXIT_REASON_FAULT Thread 0: 0 ??? 0x231fa997c 0x180000000 + 2985990524 1 ??? 0x197eb98b4 0x180000000 + 401316020 2 ??? 0x197ec4e04 0x180000000 + 401362436 3 ??? 0x197ec5ea0 0x180000000 + 401366688 4 ??? 0x19066bdb8 0x180000000 + 275168696 5 ??? 0x19066b968 0x180000000 + 275167592 6 ??? 0x19b5c19a4 0x180000000 + 459020708 7 ??? 0x19b5cfa2c 0x180000000 + 459078188 8 ??? 0x19b5cf838 0x180000000 + 459077688 9 ??? 0x197ec7c74 0x180000000 + 401374324 10 ??? 0x197ec991c 0x180000000 + 401381660 11 ??? 0x1bd74222c 0x180000000 + 1031021100 12 ??? 0x1bd744ba4 0x180000000 + 1031031716 13 ??? 0x1bd730e18 0x180000000 + 1030950424 14 ??? 0x1bd7458f8 0x180000000 + 1031035128 15 ??? 0x1bd730e18 0x180000000 + 1030950424 16 ??? 0x1bd731ae4 0x180000000 + 1030953700 17 ??? 0x1bd73bdac 0x180000000 + 1030995372 18 ??? 0x1bd73b6ac 0x180000000 + 1030993580 19 ??? 0x1e23283b0 0x180000000 + 1647477680 20 ??? 0x1e23278c0 0x180000000 + 1647474880
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213
Activity
1d
ToolbarItemGroup With Palette Style Cannot Present a View Controller While the Context Menu Is Visible
When I set up a toolbar item group with multiple options and set the controlGroupStyle as .palette, and when one of the options are supposed to present a view controller, I get the following error Attempt to present <UINavigationController: 0x101813200> on <ProjectName.HomeTabBarViewController: 0x10701bc00> (from <UINavigationController: 0x107821000>) which is already presenting <_UIContextMenuActionsOnlyViewController: 0x1035c19d0>. So basically the context menu we see is under the hood a view controller that is being presented. Is there a right way of fixing it, or is it maybe something that will be fixed by Apple? This is how I set up the ToolbarItemGroup on SwiftUI and the view model ultimately presents another UINavigationController that has a UIHostingController as its view controller: .toolbar { ToolbarItemGroup(placement: .topBarTrailing) { Button("ft_commons_edit".localised, systemImage: "pencil") { viewModel.didTapEditAction() } Button("ft_commons_delete".localised, systemImage: "trash") { viewModel.didTapDeleteAction() } } label: { Image("edit-icon") .resizable() .frame(width: 24.0, height: 24.0) } } .controlGroupStyle(.palette) This is how the view looks like when presentation fails: As a workaround, I found two options that work well. I’d like to share them and ask for recommendations, just to make sure they won’t cause any unexpected issues later on: Option 1: Access the top most visible view controller and attempt presenting on it This requires the following extension: extension UIViewController { func topMostViewController() -> UIViewController { if let presentedViewController = self.presentedViewController { return presentedViewController.topMostViewController() } else if let navigationController = self as? UINavigationController, let topViewController = navigationController.topViewController { return topViewController.topMostViewController() } else if let tabBarController = self as? UITabBarController, let selectedViewController = tabBarController.selectedViewController { return selectedViewController.topMostViewController() } else { return self } } } Then called as: navigationController.topMostViewController().present(exerciseEditingNavController, animated: true) Option 2: Call dismiss before attempting to present anything This also works fine, even without any delay, the menu is first dismissed and presentation works fine afterwards, code example: navigationController.dismiss(animated: true) navigationController.present(exerciseEditingNavController, animated: true) I feel like Option 1 would be the better choice, because if this context menu is ever no longer treated as a view controller and direct presentation starts working, Option 1 would still behave correctly by presenting from the topmost visible view controller. Option 2, on the other hand, could introduce a bug by dismissing an unrelated view controller if the context menu is no longer represented as a view controller at that point. I would appreciate any advice from anyone who has experienced this, or from Apple developers. Thanks
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6
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296
Activity
3d
`safeAreaInsets` but for system bars?
Is there a safeAreaInsets equivalent that only tracks system bars (tab bars, status bars, side bars, toolbars, and navigation bars) and is not affected by notches? I'm asking this because the iPadOS tab bar can appear either on the top, bottom, or left (modally or non-modally) in various configurations, including sidebarAdaptable and when the window size is small on iPadOS; the tab bar's frame is not really reliable in this case, and while the safe area insets works, it also includes the notches / rounded window corners...
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86
Activity
3d
MacCatalyst, UIScene and the green zoom/fullscreen button
Please show me where I’ve gone amiss in MacCatalyst and UIScenes with regard to the macOS green zoom/fullscreen button. Originally the MacCatalyst App used a secondary AppKit bundle for its NSWindow work, but at some point in time AppStore Connect complained about this secondary bundle which prevented new App uploads. To continue receiving green button notifications I switched to UINSWindow. That worked. Now that I’m forced to use UIScenes I’m in a pickle: a click on the green button forces an automatic jump to fullscreen, nothing I can do about it AFAIK. A poor, poor compromise would be to disable the green button but I have no idea how even to do that. I’d like my App to exist in two states, any suggestions? Thanks.
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64
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3d
CarPlay: AVSpeechUtterance not speaking/playing audio in some cars
I am having an issue with the code that I posted below. I capture voice in my CarPlay app, then allow the user to have it read back to them using AVSpeechUtterance. This works fine on some cars, but many of my beta testers report no audio being played. I have also experienced this in a rental car where the audio was either too quiet or the audio didn't play. Does anyone see any issue with the code that I posted? This is for CarPlay specifically. class CarPlayTextToSpeechService: NSObject, ObservableObject, AVSpeechSynthesizerDelegate { private var speechSynthesizer = AVSpeechSynthesizer() static let shared = CarPlayTextToSpeechService() /// Completion callback private var completionCallback: (() -> Void)? override init() { super.init() speechSynthesizer.delegate = self } func configureAudioSession() { do { try AVAudioSession.sharedInstance().setCategory(.playback, mode: .voicePrompt, options: [.duckOthers, .interruptSpokenAudioAndMixWithOthers, .allowBluetoothHFP]) } catch { print("Failed to set audio session category: \(error.localizedDescription)") } } public func speak(_ text: String, completion: (() -> Void)? = nil) { self.configureAudioSession() // Store the completion callback self.completionCallback = completion Task(priority: .high) { let speechUtterance = AVSpeechUtterance(string: text) let langCode = Locale.preferredLocalLanguageCountryCode if langCode == "en-US" { speechUtterance.voice = AVSpeechSynthesisVoice(identifier: AVSpeechSynthesisVoiceIdentifierAlex) } else { speechUtterance.voice = AVSpeechSynthesisVoice(language: langCode) } try AVAudioSession.sharedInstance().setActive(true, options: .notifyOthersOnDeactivation) speechSynthesizer.speak(speechUtterance) } } func speechSynthesizer(_ synthesizer: AVSpeechSynthesizer, didFinish utterance: AVSpeechUtterance) { Task { stopSpeech() try AVAudioSession.sharedInstance().setActive(false) } // Call completion callback if available self.completionCallback?() self.completionCallback = nil } func stopSpeech() { speechSynthesizer.stopSpeaking(at: .immediate) } }
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3
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384
Activity
3d
Touch events responding is delayed when 3D touch is ON
Update:I create a plain app and a keyboard extension to test the touch events. The plain app can respond the touch immediately but the keyboard extension has about 1s lag.--------------------------------------------------------Hi, Recently I test my app on the iPhone 6s and the iPhone 6sp with 3D touch ON. I notice 3 strange things:When my finger touches on the left edge of the screen, the app responds the touch events after about 1s delay.When I touch on the left edge of the screen and push with force, the 3D touch task switcher shows.But if I tap the left edge of the screen, the app can respond the touch events immediately.I test many other 3rd apps and system apps (notes, contacts) this phenomenon exists too with 3D touch ON. When I turn 3D touch OFF, the app responds the touch events immediately as usual.On the other hand, the system keyboard responds the touch events immediately whether the 3D touch is ON or OFF.I guess it’s because the touch events responding conflicts with the 3D touch task switcher. I have tried many 3D touch APIs but have no effects.Does anyone have an idea? Thanks!
Topic: UI Frameworks SubTopic: UIKit Tags:
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5
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2.1k
Activity
6d
How to add Paste button in UIMenu such that the system "allow app to paste" prompt does not appear
Apps that try to access the contents of the pasteboard cause a system prompt to appear asking the user "AppName" would like to paste from "OtherAppName" Do you want to allow this? Don't Allow Paste Allow Paste This prompt does not appear if you implement a UIPasteControl and the user taps it to signal intent to paste, but this control cannot be placed into a UIMenu. I read this could be achieved with UIAction.Identifiers like .paste or .newFromPasteboard but the prompt still appears with the following code. What's the trick? override func viewDidLoad() { super.viewDidLoad() title = "TestPaste" view.backgroundColor = .systemBackground let imageView = UIImageView() imageView.translatesAutoresizingMaskIntoConstraints = false imageView.contentMode = .scaleAspectFit imageView.clipsToBounds = true view.addSubview(imageView) NSLayoutConstraint.activate([ imageView.topAnchor.constraint(equalTo: view.topAnchor), imageView.leadingAnchor.constraint(equalTo: view.leadingAnchor), imageView.trailingAnchor.constraint(equalTo: view.trailingAnchor), imageView.bottomAnchor.constraint(equalTo: view.bottomAnchor) ]) navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Add", image: UIImage(systemName: "plus"), menu: UIMenu(children: [ UIAction(identifier: .paste) { _ in imageView.image = UIPasteboard.general.image } ])) }
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457
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1w
Setting alternate app icon fails with "Ressource temporarily not available"
Switching alternative app icons previously worked in my app and I did not notice when it broke. However now the completion handler consistently returns this error if feeding with either an existing app icon name or a fictional one. Is this a regression I should file a bug report for or am I doing something wrong here? Include all app icon assets is enabled in the target Below you can see the error, the .icon files placed in the project navigator, my code and the top of the Info.plist Thank you Button("Update icon") { UIApplication.shared.setAlternateIconName("appIcon_Heart") { error in if let error { print(error) } } } Error Domain=NSPOSIXErrorDomain Code=35 "Resource temporarily unavailable" UserInfo={_LSFile=LSIconAlertManager.m, _LSLine=113, _LSFunction=-[LSIconAlertManager iconChangeAlertTokenForIdentity:error:]} Xcode seems to create the correct Info.plist entries. <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>BGTaskSchedulerPermittedIdentifiers</key> <array> <string>newReleasesBackgroundTask</string> </array> <key>BuildMachineOSBuild</key> <string>24G90</string> <key>CFBundleDevelopmentRegion</key> <string>de</string> <key>CFBundleDisplayName</key> <string>Hörspielzentrale</string> <key>CFBundleExecutable</key> <string>Hoerspielzentrale</string> <key>CFBundleIcons</key> <dict> <key>CFBundleAlternateIcons</key> <dict> <key>appIcon_Heart</key> <dict> <key>CFBundleIconName</key> <string>appIcon_Heart</string> </dict> <key>appIcon_RedNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_RedNoCircle</string> </dict> <key>appIcon_WhiteNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_WhiteNoCircle</string> </dict> </dict> <key>CFBundlePrimaryIcon</key> <dict> <key>CFBundleIconFiles</key> <array> <string>AppIcon60x60</string> </array> <key>CFBundleIconName</key> <string>AppIcon</string> </dict> </dict> <key>CFBundleIcons~ipad</key> <dict> <key>CFBundleAlternateIcons</key> <dict> <key>appIcon_Heart</key> <dict> <key>CFBundleIconName</key> <string>appIcon_Heart</string> </dict> <key>appIcon_RedNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_RedNoCircle</string> </dict> <key>appIcon_WhiteNoCircle</key> <dict> <key>CFBundleIconName</key> <string>appIcon_WhiteNoCircle</string> </dict> </dict> <key>CFBundlePrimaryIcon</key> <dict> <key>CFBundleIconFiles</key> <array> <string>AppIcon60x60</string> <string>AppIcon76x76</string> </array> <key>CFBundleIconName</key> <string>AppIcon</string> </dict> </dict>
Topic: UI Frameworks SubTopic: UIKit
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3
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444
Activity
1w
Invalid parameter not satisfying: parentEnvironment != nil
Since the beta releases of iPadOS 26 we have been having some crashes about Invalid parameter not satisfying: parentEnvironment != nil We got to contact a couple of users and we found out that the crash appears when entering a screen in a UINavigationController with the iPad device connected to a Magic Keyboard. If the device is not connected to the keyboard then nothing happens and everything works ok. From our end we haven't managed to reproduce the crash so I am pasting part of the stacktrace if it can be of any help. 3 UIKitCore 0x19dfd2e14 -[_UIFocusContainerGuideFallbackItemsContainer initWithParentEnvironment:childItems:] + 224 (_UIFocusContainerGuideFallbackItemsContainer.m:23) 4 UIKitCore 0x19dae3108 -[_UIFocusContainerGuideImpl _searchForFocusRegionsInContext:] + 368 (_UIFocusGuideImpl.m:246) 5 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 6 UIKitCore 0x19db28900 -[_UIFocusMapSnapshot addRegionsInContainers:] + 160 (_UIFocusMapSnapshot.m:545) 7 UIKitCore 0x19d1313dc _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 632 (_UIFocusRegion.m:143) 8 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 9 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 10 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 11 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 12 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 13 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 14 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 15 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 16 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 17 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 18 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 19 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 20 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 21 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 22 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 23 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 24 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 25 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 26 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 27 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 28 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 29 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 30 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 31 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 32 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 33 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 34 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 35 UIKitCore 0x19d1320fc _UIFocusItemContainerAddChildItemsInContextWithOptions + 596 (UIFocusItemContainer.m:183) 36 UIKitCore 0x19d131b98 _UIFocusRegionSearchContextAddChildItemsInEnvironmentContainer + 648 (_UIFocusRegion.m:108) 37 UIKitCore 0x19d131398 _UIFocusRegionSearchContextSearchForFocusRegionsInEnvironment + 564 (_UIFocusRegion.m:140) 38 UIKitCore 0x19db1d244 -[_UIFocusRegionContainerProxy _searchForFocusRegionsInContext:] + 140 (_UIFocusRegionContainerProxy.m:184) 39 UIKitCore 0x19db28498 -[_UIFocusMapSnapshot addRegionsInContainer:] + 2720 (_UIFocusMapSnapshot.m:531) 40 UIKitCore 0x19d132e08 -[_UIFocusMapSnapshot _capture] + 424 (_UIFocusMapSnapshot.m:403) 41 UIKitCore 0x19db2675c -[_UIFocusMapSnapshot _initWithSnapshotter:mapArea:searchArea:] + 476 (_UIFocusMapSnapshot.m:171) 42 UIKitCore 0x19d130dcc -[_UIFocusMapSnapshotter captureSnapshot] + 192 (_UIFocusMapSnapshotter.m:137) 43 UIKitCore 0x19db2045c -[_UIFocusMap _inferredDefaultFocusItemInEnvironment:] + 136 (_UIFocusMap.m:168) 44 UIKitCore 0x19daffd2c -[_UIFocusEnvironmentPreferenceEnumerationContext _inferPreferencesForEnvironment:] + 140 (_UIFocusEnvironmentPreferenceEnumerator.m:313) 45 UIKitCore 0x19d127ab4 -[_UIFocusEnvironmentPreferenceEnumerationContext _resolvePreferredFocusEnvironments] + 104 (_UIFocusEnvironmentPreferenceEnumerator.m:250) 46 UIKitCore 0x19d127394 -[_UIFocusEnvironmentPreferenceEnumerationContext preferredEnvironments] + 36 (_UIFocusEnvironmentPreferenceEnumerator.m:184) 47 UIKitCore 0x19d126e94 _enumeratePreferredFocusEnvironments + 400 (_UIFocusEnvironmentPreferenceEnumerator.m:503)
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iOS 26 – Clock app Timer picker skips final hour on very fast swipe
Hi everyone, I found what looks like a picker issue on iOS 26 in the Clock app’s Timer screen, and I’m also seeing what appears to be the same behavior in UIPickerView in my own app. What I’m Doing I’m testing the Timer picker in the built-in Clock app. When I swipe very quickly on the hours component, trying to reach the maximum value together with minutes and seconds: 23 hours 59 minutes 59 seconds I noticed that the picker does not always land on the expected final value. I’m seeing a very similar issue with UIPickerView as well, especially in: public func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) When swiping very quickly to the end, the selected/logged row can be inconsistent with the final visible value. Expected Behavior When swiping quickly and stopping at the end, the Timer should correctly select: 23 hours, 59 minutes, 59 seconds Likewise, in UIPickerView, didSelectRow should reflect the actual final selected row/value after the wheel settles. Actual Behavior (iOS 26) If I swipe quickly enough on the hours component, when the picker reaches: 23 hours, 59 minutes, 59 seconds it appears to count from 22 hours instead of 23 hours. So the final selected duration is effectively off by one hour, even though the wheel visually reaches the maximum end position. I’m facing the same kind of issue with UIPickerView too. In particular, inside: public func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) when performing a very fast swipe, the reported row may behave unexpectedly near the end of the range. Additional Notes I reproduced this in the Clock app Specifically on the Timer screen The issue happens when the swipe velocity is high enough I also face the same issue with UIPickerView in my own app Question Has anyone else seen this behavior in iOS 26? Is this a known UIPickerView / wheel-picker issue, or a regression in the Timer picker logic? Any guidance would be appreciated. Thanks! P.S. I do have a video showing the issue, but I can’t upload it here. If someone could let me know the best way to share it, I’d appreciate it.
Topic: UI Frameworks SubTopic: UIKit
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UITabBar (Liquid Glass) rendering breaks when UITabBarController is recreated while fully obscured by a fullscreen modal
I’m seeing a rendering issue with UITabBarController on iOS 26 (Liquid Glass), and I’d like to confirm whether others can reproduce this or have a workaround. Summary If a UITabBarController is recreated while it is fully hidden behind a fullscreen modal, the tab bar renders incorrectly after dismissal. Selected tab becomes nearly invisible Unselected tabs appear to show both selected and unselected tint colors Looks like multiple rendering states are composited incorrectly This only happens with: iOS 26 (Liquid Glass enabled) UIKit UITabBarController It does not reproduce with SwiftUI TabView. Minimal Reproduction Code This is a complete, minimal example: import UIKit // MARK: - Root class RootViewController: UIViewController { private var tabBar: UITabBarController? private var modalPresented = false override func viewDidLoad() { super.viewDidLoad() installTabBar() } override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) // Present once on first appear, simulating an app-launch login flow. if !modalPresented { modalPresented = true presentModal() } } private func installTabBar() { let tab = UITabBarController() tab.viewControllers = [ makeTab(title: "Tab 1", systemImage: "1.circle"), makeTab(title: "Tab 2", systemImage: "2.circle"), ] tabBar = tab addChild(tab) view.addSubview(tab.view) tab.view.frame = view.bounds tab.didMove(toParent: self) } private func makeTab(title: String, systemImage: String) -> UIViewController { let vc = UIViewController() vc.view.backgroundColor = .systemBackground vc.tabBarItem = UITabBarItem(title: title, image: UIImage(systemName: systemImage), tag: 0) return vc } private func presentModal() { let modal = ModalViewController() modal.onDismiss = { [weak self] in // Recreate the tab bar while it is still fully hidden by the modal. // This seems to trigger incorrect Liquid Glass rendering. self?.tabBar?.willMove(toParent: nil) self?.tabBar?.view.removeFromSuperview() self?.tabBar?.removeFromParent() self?.installTabBar() // ← created while invisible self?.dismiss(animated: true) } modal.modalPresentationStyle = .fullScreen present(modal, animated: true) } } // MARK: - Modal class ModalViewController: UIViewController { var onDismiss: (() -> Void)? override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .systemBackground let button = UIButton(type: .system) button.setTitle("Dismiss", for: .normal) button.titleLabel?.font = .preferredFont(forTextStyle: .title2) button.addTarget(self, action: #selector(dismissTapped), for: .touchUpInside) button.translatesAutoresizingMaskIntoConstraints = false view.addSubview(button) NSLayoutConstraint.activate([ button.centerXAnchor.constraint(equalTo: view.centerXAnchor), button.centerYAnchor.constraint(equalTo: view.centerYAnchor), ]) } @objc private func dismissTapped() { onDismiss?() } } Expected Behavior The tab bar renders normally with correct Liquid Glass appearance: Selected tab is clearly visible Unselected tabs show only inactive tint Actual Behavior Selected tab becomes nearly invisible Unselected tabs show a mix of selected + unselected tint The issue resolves after backgrounding and returning to foreground Observations / Workarounds The issue does not reproduce if: The tab bar is recreated after dismissal: self.dismiss(animated: true) { self.installTabBar() } Using SwiftUI TabView Using a presentation style that does not fully cover the screen (.pageSheet, etc.) Question Has anyone else encountered this? Is there a recommended workaround besides delaying creation until after dismissal? It seems like Liquid Glass rendering may not initialize correctly when the view is attached while fully obscured, but I’m not sure if this is expected behavior or a bug.
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NSInternalInconsistencyException
Invalid parameter not satisfying: targetNode [UIGestureGraphEdge initWithLabel:sourceNode:targetNode:directed:] How to locate this crash?
Topic: UI Frameworks SubTopic: UIKit Tags:
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[iOS18]The transition animation stops and cannot be interacted with
The app becomes unresponsive when pushing a new page. The screen is covered by the _UIParallaxOverlayView class, blocking all gestures. Are there any scenarios where the transition animation might suddenly stop mid-process? Or could you provide more information to help me troubleshoot this issue? I noticed: When the issue occurs, the FromViewController is displayed on the screen. The ToViewController also exists in the view tree, but it's not visible on the screen. _UIParallaxOverlayView only appears on iOS 18 and above. The animation appears to be controlled by +[UIView _fluidParallaxTransitionsEnabledWithTraitCollection:], which is _os_feature_enabled_impl("UIKit", "fluid_parallax_transitions"). Reference
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Keyboard focus lost after instantiating an AUv3 in a host on iOS
Dear Apple Support team, I'm reaching out about an issue we're facing in our iOS audio host app on iPad. Keyboard shortcuts from an external hardware keyboard (Bluetooth) work perfectly until we load an AUv3 plugin, then the host suddenly loses all keyboard focus, and key commands stop responding completely. To give you more context: this affects every DAW that supports AUv3. I've tested it in Logic Pro for iOS, Camelot Pro, and AUM. The problem starts right after instantiating any AUv3, causing the keyboard to lose focus and preventing key commands from working. Before that, keyboard events reach our UIView without issues. Notably, this doesn't happen on iOS versions before iOS 26. I've verified it works perfectly on iOS 17 and iOS 18. You can see the full discussion and steps to reproduce in this JUCE forum thread: https://forum.juce.com/t/keyboard-focus-lost-and-keycommands-stop-working-after-instantiating-an-auv3-in-a-juce-based-host-on-ios/68497/5. It seems potentially related to AUv3 sandboxing or iOS UIView focus management. I would really appreciate your help with any insights, known issues, or workarounds. Thanks, Samuele
Topic: UI Frameworks SubTopic: UIKit
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TimePicker numeric pad popover renders as a narrow bar on iPadOS 26.4.1
When tapping the currently selected time in a TimePicker (wheel style) component to invoke the inline numeric pad popover, the popover renders incorrectly on iPadOS 26.4.1 — it appears as a very narrow single-line/bar rather than the full numeric keypad layout. Steps to Reproduce: Run Reminder, create a new reminder and add a custom time Tap the currently selected time value to trigger the numeric pad popover Observe the popover layout Expected Result: A properly sized popover appears containing a full numeric keypad, allowing direct numeric input of the time value — consistent with behavior on iPadOS 18.x Actual Result: The popover appears as an extremely narrow horizontal bar (single line height), making the numeric pad unusable Regression: Works correctly on iPadOS 18.x through iPadOS 26.3. Broken on iPadOS 26.4.1 (Xcode 26.x simulator and/or physical device). https://www.youtube.com/shorts/bd3pYA3B-iI https://www.youtube.com/shorts/wSHzepHBwEY Feedback: FB22517457
Topic: UI Frameworks SubTopic: UIKit
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PSA: UISceneDelegate.openURLContexts called twice sometimes in iOS 26
If you use UISceneDelegate's scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) to handle deep links (such as tapping a widget) you might run into an issue where this callback is called twice in the majority of cases. If you push a view controller in response to this, you might end up with two pushed view controllers, if you do not mitigate this. This is exclusively an issue in iOS 26.0 and works as expected on iOS 18. func scene(_ scene: UIScene, openURLContexts URLContexts: Set<UIOpenURLContext>) { /// Add any widget to the home screen that uses the widgetURL modifier and tap them. Most of the time, openURLContexts() will get called twice. /// If you run this project on iOS 18, it's *always* called once as expected. print("openURLContexts \(URLContexts)") } Filed as FB20301454
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iPadOS 26 - Status bar overlaps with navigation bar
Hello, I'm experiencing a navigation bar positioning issue with my UIKit iPad app on iPadOS 26 (23A340) using Xcode 26 (17A321). The navigation bar positions under the status bar initially, and after orientation changes to landscape, it positions incorrectly below its expected location. This occurs on both real device (iPad mini A17 Pro) and simulator. My app uses UIKit + Storyboard with a Root Navigation Controller. A stack overflow post has reproduce the bug event if it's not in the same configuration: https://stackoverflow.com/questions/79752945/xcode-26-beta-6-ipados-26-statusbar-overlaps-with-navigationbar-after-presen I have checked all safe areas and tried changing some constraints, but nothing works. Have you encountered this bug before, or do you need additional information to investigate this issue?
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