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iPadOS 26 UISearchController bug causing presented view controller to be dismissed
Under iPadsOS 26.0 and 26.1, if a view controller is presented with a presentation style of fullScreen or pageSheet, and the view controller is setup with a UISearchController that has obscuresBackgroundDuringPresentation set to true, then when cancelling the search the view controller is being dismissed when it should not be. To replicate, create a new iOS project based on Swift/Storyboard using Xcode 26.0 or Xcode 26.1. Update ViewController.swift with the following code: import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .systemBackground title = "Root" navigationItem.rightBarButtonItems = [ UIBarButtonItem(title: "Full", primaryAction: .init(handler: { _ in self.showModal(with: .fullScreen) })), UIBarButtonItem(title: "Page", primaryAction: .init(handler: { _ in self.showModal(with: .pageSheet) })), UIBarButtonItem(title: "Form", primaryAction: .init(handler: { _ in self.showModal(with: .formSheet) })), ] } private func showModal(with style: UIModalPresentationStyle) { let vc = ModalViewController() let nc = UINavigationController(rootViewController: vc) // This triggers the double dismiss bug when set to either pageSheet or fullScreen. // If set to formSheet then it works fine. // Bug is only on iPad with iPadOS 26.0 or 26.1 beta 2. // Works fine on iPhone (any iOS) and iPadOS 18 as well as macOS 26.0 (not tested with other versions of macOS). nc.modalPresentationStyle = style self.present(nc, animated: true) } } Then add a new file named ModalViewController.swift with the following code: import UIKit class ModalViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() title = "Modal" view.backgroundColor = .systemBackground setupSearch() } private func setupSearch() { let sc = UISearchController(searchResultsController: UIViewController()) sc.delegate = self // Just for debugging - being set or not does not affect the bug sc.obscuresBackgroundDuringPresentation = true // Critical to reproducing the bug navigationItem.searchController = sc navigationItem.preferredSearchBarPlacement = .stacked } // When the search is cancelled by tapping on the grayed out area below the search bar, // this is called twice when it should only be called once. This happens only if the // view controller is presented with a fullScreen or pageSheet presentation style. // The end result is that the first call properly dismisses the search controller. // The second call results in this view controller being dismissed when it should not be. override func dismiss(animated flag: Bool, completion: (() -> Void)? = nil) { print("dismiss ViewController") // Set breakpoint on the following line super.dismiss(animated: flag, completion: completion) } } extension ModalViewController: UISearchControllerDelegate { func willDismissSearchController(_ searchController: UISearchController) { print("willDissmissSearchController") } func didDismissSearchController(_ searchController: UISearchController) { print("didDismissSearchController") } } Build and run the app on a simulated or real iPad running iPadOS 26.0 or 26.1 (beta 2). A root window appears with 3 buttons in the navbar. Each button displays the same view controller but with a different modalPresentationStyle. Tap the Form button. This displays a modal view controller with formSheet style. Tap on the search field. Then tap on the grayed out area of the view controller to cancel the search. This all works just fine. Dismiss the modal (drag it down). Now tap either the Page or Full button. These display the same modal view controller with pageSheet or fullScreen style respectively. Tap on the search field. Then tap on the grayed out area of the view controller to cancel the search. This time, not only is the search cancelled, but the view controller is also dismissed. This is because the view controller’s dismiss(animated:completion:) method is being called twice. See ViewController.swift for the code that presents the modal. See ModalViewController.swift for the code that sets up the search controller. Both contain lots of comments. Besides the use of fullScreen or pageSheet presentation style to reproduce the bug, the search controller must also have its obscuresBackgroundDuringPresentation property set to true. It’s the tap on that obscured background to cancel the search that results in the double call to dismiss. With the breakpoint set in the overloaded dismiss(animated:completion:) function, you can see the two stack traces that lead to the call to dismiss. When presented as a formSheet, the 2nd call to dismiss is not being made. This issue does not affect iPadOS 18 nor any version of iOS on iPhones. Nor does it affect the app using Mac Catalyst on macOS 26.0 (untested with macOS 15 or 26.1). In short, it is expected that cancelling the search in a presented view controller should not also result in the view controller being dismissed. Tested with Xcode 26.1 beta 2 and Xcode 26.0. Tested with iPadOS 26.1 beta 2 (real and simulated) and iPadOS 26.0 (simulated). A version of this post was submitted as FB20569327
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Oct ’25
Does Mac Catalyst support Background Processing?
I have an app for macOS that is built using Mac Catalyst. I need to perform some background processing. I'm using BGProcessingTaskRequest to schedule the request. I have also integrated CKSyncEngine so I need that to be able to perform its normal background processing. On iOS, when the user leaves the app, I can see a log message that the request was scheduled and a bit later I see log messages coming from the actual background task code. On macOS I ran the app from Xcode. I then quit the app (Cmd-q). I can see the log message that the request was scheduled. But the actual task is never run. In my test, I ran my app on a MacBook Pro running macOS 26.0. When I quit the app, I checked the log file in the app sandbox and saw the message that the task was scheduled. About 20 minutes later I closed the lid on the MacBook Pro for the night. I did not power down, it just went to sleep. Roughly 10 hours later I opened the lid on the MacBook Pro, logged in, and checked the log file. It had not been updated since quitting the app. I should also mention that the laptop was not plugged in at all during this period. My question is, does a Mac Catalyst app support background processing after the user quits the app? If so, how is it enabled? The documentation for BGProcessingTaskRequest and BGProcessingTask show they are supported under Mac Catalyst, but I couldn't find any documentation in the Background Tasks section that mentioned anything specific to setup for Mac Catalyst. Running the Settings app and going to General -> Login Items & Extension, I do not see my app under the App Background Activity section. Does it need to be listed there? If so, what steps are needed to get it there? If this is all documented somewhere, I'd appreciate a link since I was not able to find anything specific to making this work under Mac Catalyst.
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3w
How do I support macOS 12.6 with a Mac Catalyst app and Xcode 14.2?
I have an Intel Mac running macOS Monterey 12.6. I'm running Xcode 14.2. I created a new iOS project. I deleted the "Mac (Designed for iPad)" destination and added the "Mac (Mac Catalyst)" destination. Unlike the iOS minimum deployment target, oddly there is no place to set the macOS minimum deployment target. I had to go to the target's Build Settings and change it there. I then chose "My Mac (Mac Catalyst)" as the build target and built the project. So far, so good. I then tried to run the app. I get a dialog with the following message: Could not launch “SampleApp” The app is incompatible with the current version of macOS. Please check the app's deployment target. Clicking on the Details button gives lots of info. Some things I see are: ... "device_osBuild" = "12.6 (21G115)"; ... "sdk_canonicalName" = "macosx13.1"; "sdk_osVersion" = "13.1"; But I'm not running macOS 13.1. I have macOS 12.6. Oddly there's no mention of the deployment target being set to 12.4 (which I set in the target's Build Settings). If I go to Xcode -> Preferences -> Platforms, I see "macOS 13.1" listed as built-in. Tapping on the + button there is no option for macOS. So my question is how do I support running a Mac Catalyst app on an Intel Mac running macOS 12.6 while using Xcode 14.2? Can it be done? What steps do I need to take? I've reloaded the project. I've restarted Xcode. I've done a clean build. Nothing changes.
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3.2k
Jan ’23
"Import from iPhone or iPad" in UITextView context menu under Mac Catalyst
While working on the Mac Catalyst version of my iOS app, I noticed something interesting. I have a UITextView with the allowsEditingTextAttributes property enabled. When running the app on a Mac, the context menu that appears when right-clicking inside the UITextField includes the menu item "Import from iPhone or iPad". That brings up a menu with 3 options each for my iPhone and iPad that I happen to connected to my Mac recently. There options include "Take Photo", "Scan Documents", and "Add Sketch". I created a brand new iOS app project and simply added a UITextView to the main view controller. After setting allowsEditingTextAttributes to true, it shows the same behavior. Some questions: Is this documented anywhere? I'm guessing this is related to Continuity Camera in some way. But there's no mention of this anywhere that I've seen so far. How can I prevent this menu from appearing? Nothing related to these menus comes through the canPerformAction(_:withSender:) method. And nothing related to these menus is part of the menu item array sent to the UITextViewDelegate textView(_:editMenuForTextIn:suggestedActions:) method. I need to remove this menu in my app because while I support some text attributes (bold, italic, underline), I do not want to allow pictures to be added. Does anything else in iOS under Mac Catalyst automatically get similar support? If so, what?
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1.4k
Jun ’23
Why aren't new builds sent to App Store Connect reflecting my updated Info.plist?
I have a brand new macOS app (built with Mac Catalyst and based on a long existing iOS app) I've submitted to App Store Connect for review. It was rejected due to my Contacts purpose string not being deemed sufficient (despite being the same one the iOS version of the app has been using for years). Anyway, I made a change to the privacy string and submitted a new build. The new build was rejected and a screenshot showed the About screen with the new build number as well as the privacy string from the original build, not the new build. So I verified that my archive did in fact have an Info.plist with the updated privacy string. So I resubmitted that build again for review and it was rejected again for the same reason. Despite the reviewer claiming, at my request, that a fresh install of the latest build was used. So I changed the privacy string again and submitted a 3rd new build, again verifying the archive that I was sending through the Xcode Organizer did have the updated (now 3rd) privacy string. And again the app has been rejected. Despite 2 new builds, the reviewers are still seeing the original privacy string. Does anyone have any ideas on how to get this resolved?
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1.3k
Jun ’23
How to report Xcode 26 / iOS 26 bugs with Feedback Assistant?
I'm running macOS 15.5. I now have Xcode 26 and I'm testing my iOS app against iOS 26. I've encountered several UIKit / iOS 26 bugs I'd like to report. In Feedback Assistant I choose "Developer Technologies & SDKs". Eventually I get asked "What build does the issue occur on?". The list of choices is: iOS 18.2 Seed 4 iOS 18.1.1 iOS 17.7.2 An earlier iOS build I'm not sure So how to I report this as an iOS 26 beta 1 issue?
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321
Jun ’25
Does Mac Catalyst support an "always on top" window scene?
My UIKit/Mac Catalyst app supports a user opening multiple windows (multiple scenes). One of these is a special scene that shows content that I want to appear in front of all other app windows/scenes, even while the user is interacting with one of the app's other scenes. I do not need this special scene to stay in front of the windows of other apps, just in front of the windows of my own app. While I'm not 100% sure, it seems that AppKit supports this through the NSWindow level property. I can't find any equivalent feature in UIKit/Mac Catalyst. UIWindow windowLevel is not the same thing since that only affects the order of windows within a given scene. I need an entire scene (and its windows) to stay in front of my app's other scenes (and their windows). I don't see anything relevant in UIWindow, UIScene, UIWindowScene, UISceneSession, UIScene.ActivationRequestOptions, or UIWindowScene.ActivationRequestOptions.
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Oct ’25
UISceneActivationConditions and UIApplicationShortcutItem
Just watched the Targeting Content with Multiple Windows video. My app uses UIApplicationShortcutItem and UIApplication.shortcutItems.So I thought it would be useful to set the targetContentIdentifier property of each shortcut item so when the user selects one of the shortcuts, they can be brought to the mose appropriate scene in the app.But UIApplicationShortcurItem targetContentIdentifer is a read-only property. Is this is mistake?The documentation for UISceneActiviationConditions states (emphesis mine):Many different objects contain a targetContentIdentifier property, including NSUserActivity, UNNotificationContent, and UIApplicationShortcutItem. When creating those objects, fill that property with a value that uniquely describes the event and matches your scenes' predicates.Kind of hard to do when the property is read-only.Am I missing something or is this an API bug?
Topic: UI Frameworks SubTopic: UIKit Tags:
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1.1k
Feb ’22
Can a MailKit MEMessageActionHandler process all incoming messages?
As best as I can tell, the only messages sent to a MEMessageActionHandler for processing are those going to the Inbox. I'm trying to write a Mail extension that processes incoming messages, most importantly those that go straight to the Junk folder, but none of those messages go to the extension. Is there some setting I may be missing or can a MEMessageActionHandler only process emails going to the Inbox?
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1k
Aug ’22
How is receipt validation supposed to work for a new Mac version of an old iOS app?
Background: I've had an app in the iOS app store for many years. Quite recently I published a Mac version of the app. The Mac version uses the same bundle id and the app is setup in App Store Connect to be the same app. It's my understanding that with this setup, if a user purchases the iOS version, they don't need to pay for the macOS version (or vice versa). The iOS app started out as a paid app and was later transitioned to a free app with in-app purchases. The new macOS version also supports the same IAPs. If it makes a difference, the macOS version is built from the iOS code base using Mac Catalyst. The app uses old StoreKit1 on-device receipt validation. Issue: I have a longtime user of the iOS app that has recently installed the macOS version. Their attempt to restore purchases in the macOS version is not resulting in anything being restored. The user originally purchased the old iOS version before it had any in-app purchases. I log diagnostic info in the app and the user sent me those logs. One of the things I show in the log is information from the receipt. The on-device receipt validation my app does is indicating it is a valid receipt. The problem is that the receipt states the original version of the app corresponds to the new macOS build. i would expect the receipt to show the version originally purchased years ago on iOS. Question: What is supposed to happen in a case like this? When the macOS version of the app requests (and gets) an updated receipt, is the receipt supposed to show the original version as the first macOS version of the app or is it supposed to show the first downloaded version, regardless of OS? What is the correct logic for restoring purchases if the macOS receipt has no indication of the user ever having used the iOS version for years?
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1.1k
Jun ’23
Is there any notification under macOS 14 when the user changes the Text Size accessibility setting?
Is there any way for a 3rd party macOS app to receive some sort of notification for a change to the Text Size accessibility setting in the Settings app? I have not been able to find any API for this. Several Apple apps (Mail, Notes, and others) update text size based on the setting. I'd like to do the same in my own macOS app.
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797
Feb ’24
Is the new iPadOS/macOS 26 help icon available in SF Symbols?
Under macOS 26 and iPadOS, the Help menu in many cases has a menu item for "App Help". This item has the following icon: I need to use this in my own app. I am unable to find this icon in SF Symbols 7 beta. I've scanned all of the icons under "What's New". I've searched for "help", "light", and "bulb" and this icon does not appear. Does anyone know if it's even a new SF Symbol? Or does anyone know of a way to use this icon?
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169
Jul ’25
Issue with layoutMarginsGuide under iOS 26
Before I file a bug report I wanted to verify that I'm not missing something. If I setup a view controller in a navigation controller and I add a view with a constraint that lines it up with the view controller's view's layoutMarginsGuide (leadingAnchor or trailingAnchor), in several cases the view will not line up with buttons added in the navigation bar. Under iOS 18 everything lines up as expected. To demonstrate, create a new iOS project based on Swift/Storyboard. Setup the storyboard to show a UINavigationController with one UIViewController. Then in ViewController.swift (the one embedded in the navigation controller), use the following code: import UIKit class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() view.backgroundColor = .yellow title = "Layout Margins" let leftCancel = UIBarButtonItem(systemItem: .cancel) navigationItem.leftBarButtonItem = leftCancel let rightCancel = UIBarButtonItem(systemItem: .cancel) navigationItem.rightBarButtonItem = rightCancel let leftView = UIView() leftView.backgroundColor = .blue leftView.translatesAutoresizingMaskIntoConstraints = false self.view.addSubview(leftView) let rightView = UIView() rightView.backgroundColor = .red rightView.translatesAutoresizingMaskIntoConstraints = false self.view.addSubview(rightView) NSLayoutConstraint.activate([ leftView.widthAnchor.constraint(equalToConstant: 80), leftView.heightAnchor.constraint(equalToConstant: 80), leftView.leadingAnchor.constraint(equalTo: self.view.layoutMarginsGuide.leadingAnchor), leftView.topAnchor.constraint(equalTo: self.view.layoutMarginsGuide.topAnchor), rightView.widthAnchor.constraint(equalToConstant: 80), rightView.heightAnchor.constraint(equalToConstant: 80), rightView.trailingAnchor.constraint(equalTo: self.view.layoutMarginsGuide.trailingAnchor), rightView.topAnchor.constraint(equalTo: self.view.layoutMarginsGuide.topAnchor), ]) } } This adds a "Cancel" button to both ends of the navigation bar and it adds two little square views lined up with the leading and trailing layout margins. Here's the results: iPad running iPadOS 26 beta 3 (note the misalignment). This is really jarring when trying to align another glass button below the cancel button: iPad running iPadOS 18.5 (aligned just fine): iPhone in portrait running iOS 26 beta (aligned just fine): iPhone in landscape running iOS 26 beta (no alignment at all): iPhone in portrait running iOS 18.5 (aligned just fine): iPhone in landscape running iOS 18.5 (aligned just fine): Under iOS 26 on an iPhone (simulator at least) in portrait, the cancel buttons line up with the colored squares. That's good. In landscape, the colored squares have much larger margins as expected (due to the larger safe areas caused by the notch), but the cancel buttons in the navigation bar are not using the same margins. This one is debatable. Under iOS 18 the cancel buttons use larger margins to match the larger safe area. But I can see why under iOS 26 they changed this since the navigation bar doesn't interfere with the notch. But it's inconsistent. Under iOS 26 on an iPad (simulator at least), it's wrong in any orientation. Despite the lack of any notch or need for a larger safe area, the colored squares are indented just a bit more than the buttons in the navigation bar. I see no reason for this. Under iOS 18 everything lines up as expected. My real question at this point: Is the mismatched margins on an iPad under iOS 26 between the buttons in the navigation bar and other views added to the view controller a likely bug or am I missing something?
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327
Jul ’25
Xcode 26 on macOS 26 with a Dark theme in Light Mode
Is anyone else using one of the "Dark" editor themes (such as "Default (Dark)" or "Classic (Dark)" in Xcode? And is anyone doing this with Xcode 26 on macOS 26? Here's the result while using the "Default (Dark)" theme while my Mac is in "light" mode: Note that the black background of the editor goes all the way to the far left edge of the Xcode window. The large gray area in the project tree is the black background bleeding through the sidebar. This is really distracting. Is there a way to fix this (besides not using a dark theme - I've been using dark themes for over 30 years)? This appears to be a poor design decision in macOS 26 to have split views show the background of the secondary column behind the primary column. iPadOS 26 has the same issue (see https://developer.apple.com/forums/thread/800073).
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121
Oct ’25