I have a document based app, and if the user tries to open a document in the active/foreground scene, and that document is already open in another existing scene, I would like to activate that existing scene, and destroy the current foreground one. I do it like that: UIApplication.shared.requestSceneSessionActivation(existingSession, userActivity: activity, options: nil) UIApplication.shared.requestSceneSessionDestruction(foregroundSession, options: nil) When I run this code, the foreground scene is destroyed, but the activated one is not brought to foreground, it simply takes me to home screen. On iOS14, it kinda works, the existing one is brought to foreground and splits the screen with the current foreground one for a split second, then the current one is destroyed, and the existing scene now takes all the screen. The intermediate split state is not visually nice but it does it's job. How can I achieve the same behaviour on iOS15?

I'm building a MacCatalyst app, where the Tab key is used for a special functionality within the app. For that, I inserted a UIKeyCommand in the main menu for "\t". When I press Tab, the default functionality takes over, and the focus moves to a button in the toolbar and stays there, which I don't want. As a result, the action of my key command is not called. I set tabKeyCommand.wantsPriorityOverSystemBehavior = true, but it makes no difference. The root view controller of my app is an UISplitViewController. I overloaded 'shouldUpdateFocus(in:)' and always return false hoping that this will disable moving the focus for the whole app, but it's not working. It looks like it's more difficult then needed. How can I instruct the system to not interfere with the Tab key?

I have a doc app consisting of two types of scenes, "Default Configuration" and "About". When an about scene is created, I set its activation condition to NO, so it does not get activated for any userActivity or URLContext: scene?.activationConditions.canActivateForTargetContentIdentifierPredicate = NSPredicate(value: false) Now, I open an about scene and some default configuration scenes. If the about scene is on top, then when opening a handoff user activity, this about scene gets activated instead of the default ones, or a new default scene being created. If the about scene is in background or it is not created, a correct default scene is activated and passed the activity. Opening documents from finder works fine in both cases, a default scene is activated and it gets URLContext objects. Is this the expected behaviour? I found a workaround but it feels like a workaround. I enable activation on the about scene: scene?.activationConditions.canActivateForTargetContentIdentifierPredicate = NSPredicate(value: false) Then in the about scene, I listen to scene(_:userActivity:), get the activity when it gets activated, pass it to UIApplication.shared.delegate, which in turn requests a new scene activation and passes the activity object to this new scene. In this case, a scene with the correct default configuration gets activated. I'm running the tests on macOS 12.4 if it matters.

Swift class indentation is eating useful horizontal space, and it's not much helpful, apart from being consistent. How can I disable it? I know that I can disable it altogether, but I want to keep the auto-indentation for the rest of {} blocks, it's useful.

I downloaded the simulators, opened the DMGs, and copied them to the library. Then I start Xcode and it enters an infinite loop of "Cannot open because unverified...". I keep pressing "Open Anyway" in the Settings app, it keeps telling me "Cannot open because unverified blah blah...". I tried following the hints in this thread (https://developer.apple.com/forums/thread/732324) but no luck, I only wasted hours of work So, Apple, how to install visionOS 1.0 in Xcode 15 beta 2, such a way that it works??

I have added Siri capability for an iOS/MacCatalyst app in Xcode. The app compiles just fine for iOS, but when compiling for MacCatalyst I get the error: “/Volumes/xdrive/M2/M2.xcodeproj Provisioning profile "Mac Catalyst Team Provisioning Profile: com.anotherview.M2.mac" doesn't include the com.apple.developer.siri entitlement. ” On the “Signing & Capabilities” page I get the error: “Automatic signing failed Xcode failed to provision this target. Please file a bug report at https://feedbackassistant.apple.com and include the Update Signing report from the Report navigator.” How can I add Siri capabilities on a Mac Catalyst app?

Got some crashes in Xcode Organizer from a macCatalyst app and they are not symbolicated. The crashes are from an X86-64 machine, and my work machine is M1. When trying to symbolicate them in Organizer I get an error: "Unable to Symbolicate Crash - An error occurred attempting to symbolicate crash. Unable to locate dSYMs for ...". It makes sense, as I only run the app on M1, and maybe the X86-64 was not built on this machine. I then went to download the dSYM file from AppStoreConnect/TestFlight/Build Metadata, but there is no "Download dSYM" link, even though the app page says "Includes Symbols Yes". I then tried to compile the app for "AnyMac (Mac Catalyst, Apple Silicon, Intel)", and now I get a binary with two images, the arm64 and the x86, but the UUID of x86 image is different than the one from the crash file. How can I get the original dSYM to symbolicate crashes from production?

Hi, I'm storing a string on a named UIPasteboard, and when reading it back, it comes as nil. It works fine on iOS, but on MacCatalyst it always returns nil. I store it like that: let p = UIPasteboard(name: UIPasteboard.Name(rawValue: "aaa"), create: true)! p.string = "some text" print("hasStrings: \(p.hasStrings)") // hasStrings: true and I read it like that: let p = UIPasteboard(name: UIPasteboard.Name(rawValue: "aaa"), create: false)! print("hasStrings: \(p.hasStrings)") // hasStrings: false I'm running the two pieces of code from two different methods of a UIViewController. Say I store the string in 'viewWillAppear', and read it back in 'viewDidAppear'.

I get this error in Xcode 13.4. I set the deployment target to macOS 12.3 (latest available) but I still get this error. Which version of macOS should I set as deployment target, to get rid of this error. I dont want to use 'if #available' because I have no alternative code path. Which macOS version corresponds to Mac Catalyst 14.0?

I want to create an Welcome window for my app to show it at the first launch. While this window is visible, no other window/scene should be created. The user should click a "Continue" button to be able to use the app, and create new scenes. I defined two scenes, "Default Configuration" and "Welcome", and at the end of "application(_ :willFinishLaunchingWithOptions:)" I display the Welcome scene. It works ok, but a default scene is also created at startup while the Welcome window/scene is visible. I also tried using a macOS plugin. I defined the Welcome window in a xib in the plugin, and launched it from there. I did set "Visible at Launch", but that did not prevent a second scene to be created at startup, with the "Default Configuration". How can I temporarily prevent new scenes to be created?

I'm working on an app displaying a few hundred custom labels. The custom label is modelled after UILabel. When I implement the custom label using TextKit, the app is using about 0.5 GB of memory. When I implement it using TextKit2, it takes about 1.2 GB. Did anyone notice such a big difference in memory usage between TextKit and TextKit2? For how long will TextKit be around before being deprecated?

I can't wrap my head around how to make two buttons the same width, without resorting to ugly hacks like GeometryReader. What is otherwise easy to implement using UIStackView or AutoLayout, becomes a nightmare in SwiftUI. I tried the following, plus some other variations, but nothing works. What is the "official way" to make two vertically aligned buttons of the same width? 1) VStack(alignment: .leading) { Button("Short", action: {}) .frame(maxWidth: .infinity) Button("Long title", action: {}) .frame(maxWidth: .infinity) } .frame(maxWidth: .infinity) 2) VStack(alignment: .leading) { Button(action: {}) { Text("Short") .frame(maxWidth: .infinity) } Button(action: {}) { Text("Long title") .frame(maxWidth: .infinity) } } .frame(maxWidth: .infinity) 3) VStack(alignment: .leading) { Button(action: {}) { Text("Short") }.frame(maxWidth: .infinity) Button(action: {}) { Text("Long title") }.frame(maxWidth: .infinity) } .frame(maxWidth: .infinity)

A method in my app now requires the override keyword when compiling with Xcode 26 beta / iOS 26 SDK, but if I add it, the current official Xcode 16.4 (iOS 18 SDK) throws a compile error. It's about 'toggleSidebar(_:)' in UIViewController. The problem is: Apple expects our apps to be ready for iOS 26 launch this fall, so I need to be actively developing and testing in the Xcode 26 beta now. At the same time, I still need to submit updates to the App Store using the current official Xcode 16.4 until iOS 26 officially launches. I'm using a single .xcodeproj file and can't keep manually adding/removing -DIOS_SDK_26_OR_LATER in Build Settings multiple times a day. How to fix it and why isn't there a straightforward #if sdk(>=26.0) type of check for compile-time in Swift? It's really frustrating to manage this override conflict.

I have several UIBarButtonItems in a navigation bar, and they get the default glass treatment in iOS26. All look ok excepting one, which is a UIBarButtonItem with a custom view, a plain UIButton. This one does not change the tint of the inner button's image to white/black like all the others, but it stays blue, like the regular tinted bar buttons pre iOS26. I then built the inner UIButton starting from glass configuration, UIButton.Configuration.glass(), and it looks fine, see the 2nd pic. But if I send the app to background and bring it back, the inner button gets a border, such that the bar button now has 2 borders, and look out of place compared to the other bar buttons, see 3rd pic. Is this a bug or a feature? How can I make custom-view bar buttons look like regular ones, without double border.

I read this thread https://developer.apple.com/forums/thread/788979 thoroughly, but I’m still confused regarding indexing files content. I'm building a notes app where the notes are stored in files. A file can contain several notes (think paragraphs). Each note and the file document itself have a unique ID, all embedded in the file. So far so good, when the user opens a file in the app, I index all the notes in it using several CSSearchableItem, one for each note. Each CSSearchableItem gets a unique ID based on the note and file IDs. The notes are then visible in Spotlight search and when the user taps one of them, the app is called with a Spotlight activity and I present the note. I learned that I should create a CSImportExtension to allow the system to index files when app is not running. But the only method is update(_:forFileAt:), which allows to provide back to the system a single attributes set. How can I index the notes in a file as separate items? What happens if an iCloud document file is edited remotely and the app is not running, or is editing another file? Does the system detect it and run CSImportExtension on the file? All the notes and documents IDs are unique, and when the user duplicates the document file from within the app, new unique IDs are set in the duplicate file. But the user can also duplicate files outside the app, in which case the IDs remain the same in the duplicate file. How does Spotlight react to indexing two distinct items, with the same ID, but different 'contentURL'? What if I index a note from a file, and set the current contentURL of the file, and then the user moves the file. Next time when I index a note from this file, Spotlight will get an item with the same uniqueIdentifier but with a different contentURL. Won't this confuse the system? How to handle the case of deleted files: Unless a file is pending editing, the app doesn’t know it has been deleted, so it won’t remove the corresponding items from Spotlight. I should mention that I use a Core Data database, which stores the mapping from file document IDs to file URLs, actually to bookmarks, so I can track the files even if the user renames or moves them.