This topic area is about the programming languages themselves, not about any specific API or tool. If you have an API question, go to the top level and look for a subtopic for that API. If you have a question about Apple developer tools, start in the Developer Tools & Services topic. For Swift questions: If your question is about the SwiftUI framework, start in UI Frameworks > SwiftUI. If your question is specific to the Swift Playground app, ask over in Developer Tools & Services > Swift Playground If you’re interested in the Swift open source effort — that includes the evolution of the language, the open source tools and libraries, and Swift on non-Apple platforms — check out Swift Forums If your question is about the Swift language, that’s on topic for Programming Languages > Swift, but you might have more luck asking it in Swift Forums > Using Swift. General: Forums topic: Programming Languages Swift: Forums subtopic: Programming Languages > Swift Forums tags: Swift Developer > Swift website Swift Programming Language website The Swift Programming Language documentation Swift Forums website, and specifically Swift Forums > Using Swift Swift Package Index website Concurrency Resources, which covers Swift concurrency How to think properly about binding memory Swift Forums thread Other: Forums subtopic: Programming Languages > Generic Forums tags: Objective-C Programming with Objective-C archived documentation Objective-C Runtime documentation Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com"

I am currently developing an app for MacOS that needs to control HomeKit devices like lights. However, it seems like MacOS is supported on the official documentation, but not when I try to create an app ID on developer.apple.com. On the link https://developer.apple.com/apple-home/, MacOS is clearly showed as supported for MacOS. But when I try to create an app ID, it shows that it is only compatible for iOS, VisionOS and WatchOS. Could this be clarified? Best regards, orangeidle25

There appears to be a data loss bug in NSFileWrapper on macOS 26.4. It may have been around longer but I just never noticed ... So I write a RTFD file wrapper: NSFileWrapper *rtfd = [attributedString RTFDFileWrapperFromRange:NSMakeRange(0, attributedString.length) documentAttributes:@{NSDocumentTypeDocumentAttribute:NSRTFDTextDocumentType}]; Now IF I use -writeToURL:options:originalContentsURL:error: without using the NSFileWrapperWritingAtomic option and I pass in an existing URL, the followings happens: -The method returns NO and populates the NSError with NSFileWriteFileExistsError, as expected. This is what I want. -BUT the existing file is nuked. It just disappears. Foundation kills it. Poof. Another thing I gotta workaround. Getting pretty ridiculous, I must say. Just my lucky day I guess. It would be wonderful if I could work on my own features and fixing my own bugs.

Hi, We are evaluating Swift Package Manager for distributing private packages to external customers. Our use case requires enterprise-grade authentication beyond standard username/password, personal access token, or SSH key based authentication. Our current authentication model relies on request signing / IAM-based authorization rather than standard Git credentials. From what we can tell, Swift Package Manager does not appear to expose a built-in mechanism for custom authentication hooks during package resolution. Because of that, we started exploring whether a Git-based workaround might be possible, such as: using a custom Git URL scheme handling that scheme through a Git remote helper using a Git credential helper or related Git configuration for authentication We tried a proof of concept along these lines, but Xcode did not seem to recognize or resolve the package correctly. We are trying to understand what is officially supported and what is not. Our questions are: Does Xcode / Swift Package Manager support package dependencies that rely on custom Git URL schemes? During package resolution, does Xcode honor system Git configuration for remote helpers and credential helpers? Is there any difference in support between: adding the package through the Xcode UI resolving through swift package resolve resolving through xcodebuild For private package distribution, is there any Apple-recommended approach when authentication requires request signing or a custom IAM-based flow instead of standard Git credentials? If custom Git authentication is not supported, should we assume the recommended path is to place an authenticated proxy or gateway in front of a standard Git or HTTPS endpoint instead? We are mainly trying to determine whether this direction is fundamentally unsupported in Xcode / SwiftPM, or whether there is a supported way to integrate enterprise authentication into package resolution. Any guidance would be appreciated. Thanks!

I logged in to macOS with my localization language. try to perform following code. but always get "Documents". What do I miss? Apple Swift version 5.2.4 macOS 10.15.6 Xcode 11.6 code let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) if paths.count > 0 {     let doc = FileManager().displayName(atPath: paths[0])     print(doc) } result Documents

I'm working on an app, and currently, 2 things dont work: account creation and notifications. I want to find the root of why these errors are occurring, and I want to know if these errors are coming from Firebase, certain settings in Xcode not being checked, or my actual written code not being typed correctly. I've tried to run my issue through ChatGPT many times to pretty much no success, so any help on what to do so I can clear certain areas and make sure the bugs aren't from certain spots, and help me narrow down the issue would be great. Otherwise, if there are other guides or threads I can be linked to, and help me fully break down the issue, that would be great. Thank you for your time reading, and I hope I can get some advice.

Hi everyone, I’m building a SwiftUI app using NavigationStack and running into a weird nav bar issue. For the setup I have a 'home' screen with a vertical ScrollView and a large edge-to-edge header that extends under the top safe area (using .ignoresSafeArea(edges: .top)). I also have a 'detail' screen with a similar immersive layout, where the header/poster image sits at the top and the ScrollView also extends under the top area. I’m using the native navigation bar on both screens and default back button, not a custom nav bar, and I’m not manually configuring UINavigationBarAppearance, I'm just relying on SwiftUI’s default/automatic toolbar behavior. The problem I’m facing is when I push from home to the detail screen, the top nav area briefly flickers and shows the system navigation bar/material background (white in light mode, black in dark mode). It’s clearly the system material, not the poster/image underneath. The screen initially renders with that nav bar state (white/dark), and only after I start scrolling does it correct itself and visually align with the header/background behind it. What I'm thinking is that maybe the detail screen initially renders with systemBackground, so the nav bar uses its default (standard) appearance on the first frame, and only after layout/interaction, once the image-derived background settles, does it switch to the correct scroll-edge/transparent style. One important thing, if I hide the nav bar on the detail screen using .toolbar(.hidden, for: .navigationBar), the issue disappears completely. So this seems specifically tied to the native nav bar’s initial render/appearance timing during the push, rather than just the layout or image loading. I’d prefer to keep the native nav bar and back button rather than implement a custom approach. Has anyone faced this issue before, or is there a correct way to structure edge-to-edge content under the nav bar so it renders properly on first push? Video of the issue: https://imgur.com/a/OYHtYbp

Note On a Mac with Xcode installed, or on an iPad with Swift Playgrounds, you can open this chapter as a playground. Playgrounds allow you to edit the code listings and see the results immediately. (Note in page 3) (I would like to open the chapter or book: Swift Programming Language in Swift Playground on iPad) https://books.apple.com/ve/book/the-swift-programming-language-swift-5-7-beta/id1002622538?l=en-GB Best regards

I am using iPad Pro M4 device to apply exposure point to the camera. While converting layerPointConverted from 0 -1 range to device size point it is giving wrong value. But if same code is used for other iPad like Gen2, it gives proper value. In both cases video gravity used is resizeAspectFill. I tried using true depth camera for M4 device but it does not work.

Hi everyone, I’m building a SwiftUI app using NavigationStack and running into a weird nav bar issue. For the setup I have a 'home' screen with a vertical ScrollView and a large edge-to-edge header that extends under the top safe area (using .ignoresSafeArea(edges: .top)). I also have a 'detail' screen with a similar immersive layout, where the header/poster image sits at the top and the ScrollView also extends under the top area. I’m using the native navigation bar on both screens and default back button, not a custom nav bar, and I’m not manually configuring UINavigationBarAppearance, I'm just relying on SwiftUI’s default/automatic toolbar behavior. The problem I’m facing is when I push from home to the detail screen, the top nav area briefly flickers and shows the system navigation bar/material background (white in light mode, black in dark mode). It’s clearly the system material, not the poster/image underneath. The screen initially renders with that nav bar state (white/dark), and only after I start scrolling does it correct itself and visually align with the header/background behind it. What I'm thinking is that maybe the detail screen initially renders with systemBackground, so the nav bar uses its default (standard) appearance on the first frame, and only after layout/interaction, once the image-derived background settles, does it switch to the correct scroll-edge/transparent style. One important thing, if I hide the nav bar on the detail screen using .toolbar(.hidden, for: .navigationBar), the issue disappears completely. So this seems specifically tied to the native nav bar’s initial render/appearance timing during the push, rather than just the layout or image loading. I’d prefer to keep the native nav bar and back button rather than implement a custom approach. Has anyone faced this issue before, or is there a correct way to structure edge-to-edge content under the nav bar so it renders properly on first push? Video of the issue: https://imgur.com/a/OYHtYbp NavigationStack { ScrollView { HeroView() } .ignoresSafeArea(edges: .top) .navigationTitle("Cinema") .toolbarTitleDisplayMode(.inlineLarge) .toolbarBackgroundVisibility(.automatic, for: .navigationBar) .navigationDestination(for: Route.self) { route in DetailView(movie: route.movie) } } var body: some View { ScrollView { HeaderPosterView() } .ignoresSafeArea(edges: .top) .navigationBarTitleDisplayMode(.inline) .toolbarBackgroundVisibility(.automatic, for: .navigationBar) } }

Hi, we are developing a screen time management app. The app locks the device after it was used for specified amount of time. After updating to iOS 26.2, we noticed a huge issue: the events started to fire (reach the threshold) in the DeviceActivityMonitorExtension prematurely, almost immediately after scheduling. The only solution we've found is to delete the app and reboot the device, but the effect is not lasting long and this does not always help. Before updating to iOS 26, events also used to sometimes fire prematurely, but rescheduling the event often helped. Now the rescheduling happens almost every second and the events keep reaching the threshold prematurely. Can you suggest any workarounds for this issue?

When using the new RealityKit Manipulation Component on Entities, indirect input will never translate the entity - no matter what settings are applied. Direct manipulation works as expected for both translation and rotation. Is this intended behaviour? This is different from how indirect manipulation works on Model3D. How else can we get translation from this component? visionOS 26 Beta 2 Build from macOS 26 Beta 2 and Xcode 26 Beta 2 Attached is replicable sample code, I have tried this in other projects with the same results. var body: some View { RealityView { content in // Add the initial RealityKit content if let immersiveContentEntity = try? await Entity(named: "MovieFilmReel", in: reelRCPBundle) { ManipulationComponent.configureEntity(immersiveContentEntity, allowedInputTypes: .all, collisionShapes: [ShapeResource.generateBox(width: 0.2, height: 0.2, depth: 0.2)]) immersiveContentEntity.position.y = 1 immersiveContentEntity.position.z = -0.5 var mc = ManipulationComponent() mc.releaseBehavior = .stay immersiveContentEntity.components.set(mc) content.add(immersiveContentEntity) } } }

I have a simple reproducer here: struct ContentView: View { @State private var isOn = false @State private var isPresented = false var body: some View { NavigationStack { Color.blue .toolbar { ToolbarItem(placement: .topBarTrailing) { Button("Press here") { isPresented = true } .popover(isPresented: $isPresented) { Color.green .frame(idealWidth: 400, idealHeight: 500) .presentationCompactAdaptation(.popover) } } } } } } When I tap on the button in the toolbar you can see there is a hang then the popover shows. Then every time after there is no longer a hang so this seems like a bug. Any ideas? I'm using Xcode 26.3 and a iPad Pro 13-inch (M5) (26.4) simulator.

I have made a screensaver for mac in swift, but couldn't find how to add an icon the logo image that shows up on saver file) and thumbnail (the cover image that shows up in the screensaver catalogue). Currently, it just shows a default blue spiral galaxy thumbnail and no icon image

I have subclassed UITabBar and created a custom look and feel for it. On iOS 18, the tab bar appears as expected. On iOS 26, however, a default Liquid Glass-style capsule selection indicator appears behind the selected tab item. I tried using UITabBarAppearance, including selectionIndicatorTintColor = .clear and selectionIndicatorImage = nil / empty image, but the capsule-style selected background still appears. Is this selection treatment part of the new default system rendering in iOS 26, and if so, is there any supported way to remove or disable it while still using UITabBar?

The assets in the Asset.xcasset lesser than the asset in the Assets.car file. Because of this the iPA file size increased three times as Assets.car file inside the iPA increased. Why do the asset file size increased enormously. How do we prevent this ? I used Version 26.2 (17C52).

Hello there everyone. I've got numerous support projects using old school development. Things from Objective-C to RxSwift and UIKit. I've tried the LLM/Agents and they just destroy the codebase over time, so I have given up. The final straw was trying to get it to fix a POSTCODE validation issue which was using some novel ways to provide validation in place using RxSwift. Has anyone had any luck with these LLMs on Legacy codebases? Would love to hear tips.

I've looked around quite a bit at the EventKit documentation and done all the searching I could think of, as well as examining the EKCalendar and EKEventStore types. Trying to find out how to view, modify, and create groups of reminders lists.

Hello Apple Developer Support, I am reaching out for technical guidance regarding screen capture protection behavior on macOS. We are building a desktop application using Flutter running on macOS, and we have implemented native Swift code inside the macOS Runner in order to protect sensitive content from screen recording and screen sharing. Our current implementation relies on native window-level protection and display state handling from Swift, while the main UI remains rendered by Flutter. The main challenge we are facing is the following: we need to keep a strong native anti-recording protection on macOS the application is heavily used with AirPlay and screen mirroring currently, AirPlay / mirroring is often interpreted by the system similarly to screen capture or screen recording this causes our protected content to be replaced by a gray or blank area even during legitimate AirPlay usage In practice, we would like to allow: AirPlay legitimate external display / mirroring usage while still preventing: screen recording screen sharing unauthorized screen capture We would like to know whether Apple recommends an official supported approach for this use case, preferably using public APIs. More specifically: Is there an officially supported way on macOS to distinguish AirPlay mirroring from screen recording / screen sharing? Is "NSWindow.sharingType" the recommended public API for this scenario? Is there a recommended approach when the UI surface is rendered through Flutter / Metal? Are there any best practices with ScreenCaptureKit for protecting content without affecting AirPlay? We understand that some lower-level APIs may not be officially supported, so we would greatly appreciate guidance toward a public and future-proof implementation path. Thank you very much for your time and support. Best regards, Tony

I’m developing an iOS application and aiming to install a PKCS#12 (.p12) certificate into the com.apple.token keychain access group so that Microsoft Edge for iOS, managed via MDM/Intune, can read and use it for client certificate authentication. I’m attempting to save to the com.apple.token keychain access group, but I’m getting error -34018 (errSecMissingEntitlement) and the item isn’t saved. This occurs on both a physical device and the simulator. I’m using SecItemAdd from the Security framework to store it. Is this the correct approach? https://developer.apple.com/documentation/security/secitemadd(::) I have added com.apple.token to Keychain Sharing. I have also added com.apple.token to the app’s entitlements. Here is the code I’m using to observe this behavior: public static func installToTokenGroup(p12Data: Data, password: String) throws -> SecIdentity { // First, import the P12 to get the identity let options: [String: Any] = [ kSecImportExportPassphrase as String: password ] var items: CFArray? let importStatus = SecPKCS12Import(p12Data as CFData, options as CFDictionary, &items) guard importStatus == errSecSuccess, let array = items as? [[String: Any]], let dict = array.first else { throw NSError(domain: NSOSStatusErrorDomain, code: Int(importStatus), userInfo: [NSLocalizedDescriptionKey: "Failed to import P12: \(importStatus)"]) } let identity = dict[kSecImportItemIdentity as String] as! SecIdentity let addQuery: [String: Any] = [ kSecClass as String: kSecClassIdentity, kSecValueRef as String: identity, kSecAttrLabel as String: kSecAttrAccessGroupToken, kSecAttrAccessible as String: kSecAttrAccessibleAfterFirstUnlock, kSecAttrAccessGroup as String: kSecAttrAccessGroupToken ] let status = SecItemAdd(addQuery as CFDictionary, nil) if status != errSecSuccess && status != errSecDuplicateItem { throw NSError(domain: NSOSStatusErrorDomain, code: Int(status), userInfo: [NSLocalizedDescriptionKey: "Failed to add to token group: \(status)"]) } return identity }