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[iOS 26 Beta] BGTaskScheduler.supportedResources incorrectly reports no GPU support for BGContinuedProcessingTask on capable hardware
Testing Environment: iOS: 26.0 Beta 7 Xcode: Beta 6 Description: We are implementing the new BGContinuedProcessingTask API introduced in iOS 26. We have followed the official documentation and WWDC session guidance to configure our project. The Background Modes (processing) and Background GPU Access capabilities have been added in Xcode. The com.apple.developer.background-tasks.continued-processing.gpu entitlement is present and set to in the .entitlements file. The provisioning profile details viewed within Xcode explicitly show that the "Background GPU Access" capability and the corresponding entitlement are included. Despite this correct configuration, when running the app on supported hardware (iPhone 16 Pro), a call to BGTaskScheduler.supportedResources.contains(.gpu) consistently returns false. This prevents us from setting request.requiredResources = .gpu. As a result, when the BGContinuedProcessingTask starts without the GPU resource flag, our internal Metal-based exporter attempts to access the GPU and is terminated by the system, throwing an IOGPUMetalError: Insufficient Permission (to submit GPU work from background). We have performed extensive debugging, including a full reset of the provisioning profile (removing/re-adding capabilities, toggling automatic signing, cleaning build folders, and reinstalling the app), but the issue persists. This strongly suggests a bug in the iOS 26 beta where the runtime is failing to correctly validate a valid entitlement. Additionally, we've observed inconsistent behavior across devices. On an A16-based iPad, the task submits successfully (BGTaskScheduler.submit does not throw an error), but the launch handler is never invoked by the system. On the iPhone 16 Pro, the handler is invoked, but we encounter the supportedResources issue described above. This leads us to ask for clarification on the exact hardware requirements for this feature. We hypothesize that it may be limited to devices that support Apple Intelligence (A17 Pro and newer). Could you please confirm this and provide official documentation on the device support criteria? Steps to Reproduce: Create a new Xcode project. In Signing & Capabilities, add "Background Modes" (with "Background processing" checked) and "Background GPU Access". Add a permitted identifier (e.g., "com.company.test.*") to BGTaskSchedulerPermittedIdentifiers in Info.plist. In application(_:didFinishLaunchingWithOptions:) or a ViewController's viewDidLoad, log the result of BGTaskScheduler.shared.supportedResources.contains(.gpu). Build and run on a physical, supported device (e.g., iPhone 16 Pro). Expected Results: The log should indicate that BGTaskScheduler.shared.supportedResources.contains(.gpu) returns true. Actual Results: The log shows that BGTaskScheduler.shared.supportedResources.contains(.gpu) returns false.
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Error with guardrailViolation and underlyingErrors
Hi, I am a new IOS developer, trying to learn to integrate the Apple Foundation Model. my set up is: Mac M1 Pro MacOS 26 Beta Version 26.0 beta 3 Apple Intelligence & Siri --> On here is the code, func generate() { Task { isGenerating = true output = "⏳ Thinking..." do { let session = LanguageModelSession( instructions: """ Extract time from a message. Example Q: Golfing at 6PM A: 6PM """) let response = try await session.respond(to: "Go to gym at 7PM") output = response.content } catch { output = "❌ Error:, \(error)" print(output) } isGenerating = false } and I get these errors guardrailViolation(FoundationModels.LanguageModelSession.GenerationError.Context(debugDescription: "Prompt may contain sensitive or unsafe content", underlyingErrors: [Asset com.apple.gm.safety_embedding_deny.all not found in Model Catalog])) Can you help me get through this?
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SpeechAnalyzer error "asset not found after attempted download" for certain languages
I am trying to use the new SpeechAnalyzer framework in my Mac app, and am running into an issue for some languages. When I call AssetInstallationRequest.downloadAndInstall() for some languages, it throws an error: Error Domain=SFSpeechErrorDomain Code=1 "transcription.ar asset not found after attempted download." The ".ar" appears to be the language code, which in this case was Arabic. When I call AssetInventory.status(forModules:) before attempting the download, it is giving me a status of "downloading" (perhaps from an earlier attempt?). If this language was completely unsupported, I would expect it to return a status of "unsupported", so I'm not sure what's going on here. For other languages (Polish, for example) SpeechTranscriber.supportedLocale(equivalentTo:) is returning nil, so that seems like a clearly unsupported language. But I can't tell if the languages I'm trying, like Arabic, are supported and something is going wrong, or if this error represents something I can work around. Here's the relevant section of code. The error is thrown from downloadAndInstall(), so I never even get as far as setting up the SpeechAnalyzer itself. private func setUpAnalyzer() async throws { guard let sourceLanguage else { throw Error.languageNotSpecified } guard let locale = await SpeechTranscriber.supportedLocale(equivalentTo: Locale(identifier: sourceLanguage.rawValue)) else { throw Error.unsupportedLanguage } let transcriber = SpeechTranscriber(locale: locale, preset: .progressiveTranscription) self.transcriber = transcriber let reservedLocales = await AssetInventory.reservedLocales if !reservedLocales.contains(locale) && reservedLocales.count == AssetInventory.maximumReservedLocales { if let oldest = reservedLocales.last { await AssetInventory.release(reservedLocale: oldest) } } do { let status = await AssetInventory.status(forModules: [transcriber]) print("status: \(status)") if let installationRequest = try await AssetInventory.assetInstallationRequest(supporting: [transcriber]) { try await installationRequest.downloadAndInstall() } } ...
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Compositional Layout's broken `visibleItemsInvalidationHandler`
Hello everybody! TLDR: Issues with visibleItemsInvalidationHandler. Minimal code to reproduce available. I've been working with Compositional Layout for a while now and recently I've found myself needing to implement custom animation based on scroll position of UI elements. Once I found visibleItemsInvalidationHandler it felt like the exact solution that I needed. Once I implement I've found out it doesn't quite behave as you'd expect. To put it simply, it seems like the animations only work if your whole layout does not use .estimated nor .uniformAcrossSiblings. As soon as you use them then the animations will stop working, I've debugged it deeper and it seems like the invalidation context generated by it does not include the indexPath of the cells, which is always included in the version in which it works. Feel free to swap the line 51 with its comment to flip between the working and failing version of it. Playground Example My final question therefore is... Is this the expected behavior? The documentation doesn't give any clues about such behavior and although I've tried relentlessly to find a workaround for this specific hiccup I was not successful with it.
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ChatGPT in Xcode 26 not recognizing Plus subscription
Hi all, Has anyone else run into this issue in Xcode 26? I’m logged into my paid ChatGPT Plus account, but the Xcode integration doesn’t seem to recognize the subscription. After a short period of use, I get the following error: “Over daily limit. ChatGPT in Xcode will be unavailable for up to 24 hours. For higher limits, sign in with a paid ChatGPT account.” Since I’m already signed in with a paid account, this looks like either a bug or a limitation specific to Xcode. Is this expected behavior, or has anyone found a workaround to make Xcode properly recognize Plus accounts? Thanks in advance for any guidance.
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BLE connection issue with iPad A16 – Control Opcode 0xFF
We are testing BLE connectivity between a custom device (nRF52832, nRF5 SDK) and the latest iPad A16. Setup: Peripheral: nRF52832 running Nordic’s SoftDevice (nRF5 SDK v13) . Central: iPad A16 (Latest iPadOS 18.6.2). Issue: During the connection procedure, the iPad sends a Link Layer Control PDU with Opcode 0xFF. This is a vendor-specific LL control opcode. Our peripheral does not respond, since the Nordic SoftDevice does not implement handling for 0xFF. As a result, the link stability is affected (connection may drop / negotiation fails). Observations: With older iPads and iPhones (A14/A15 chips), no such control opcode is sent — connection and notifications work fine. Only the iPad A16 sends this vendor-specific opcode. Nordic’s SoftDevice responds to standard LL control opcodes, but ignores vendor-specific ones. Questions: Is this 0xFF LL control PDU expected behavior on A16 devices? Should peripherals ignore vendor-specific LL opcodes, or is a response required for stable connection? Are there known changes in BLE Link Layer negotiation with iPad A16?
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Equivalent of coalescedTouchesForTouch in AppKit?
This method on UIEvent gets you more touch positions, and I think it's useful for a drawing app, to respond with greater precision to the position of the Pencil stylus. Is there a similar thing in macOS, for mouse or tablet events? I found this property mouseCoalescingEnabled, but the docs there don't describe how to get the extra events.
Topic: UI Frameworks SubTopic: AppKit Tags:
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Applications stuck in UDP sendto syscall
Hi, We’re seeing our build system (Gradle) get stuck in sendto system calls while trying to communicate with other processes via the local interface over UDP. To the end user it appears that the build is stuck or they will receive an error “Timeout waiting to lock XXX. It is currently in use by another Gradle instance”. But when the process is sampled/profiled, we can see one of the threads is stuck in a sendto system call. The only way to resolve the issue is to kill -s KILL <pid> the stuck Gradle process. A part of the JVM level stack trace: "jar transforms Thread 12" #90 prio=5 os_prio=31 cpu=0.85ms elapsed=1257.67s tid=0x000000012e6cd400 nid=0x10f03 runnable [0x0000000332f0d000] java.lang.Thread.State: RUNNABLE at sun.nio.ch.DatagramChannelImpl.send0(java.base@17.0.10/Native Method) at sun.nio.ch.DatagramChannelImpl.sendFromNativeBuffer(java.base@17.0.10/DatagramChannelImpl.java:901) at sun.nio.ch.DatagramChannelImpl.send(java.base@17.0.10/DatagramChannelImpl.java:863) at sun.nio.ch.DatagramChannelImpl.send(java.base@17.0.10/DatagramChannelImpl.java:821) at sun.nio.ch.DatagramChannelImpl.blockingSend(java.base@17.0.10/DatagramChannelImpl.java:853) at sun.nio.ch.DatagramSocketAdaptor.send(java.base@17.0.10/DatagramSocketAdaptor.java:218) at java.net.DatagramSocket.send(java.base@17.0.10/DatagramSocket.java:664) at org.gradle.cache.internal.locklistener.FileLockCommunicator.pingOwner(FileLockCommunicator.java:61) at org.gradle.cache.internal.locklistener.DefaultFileLockContentionHandler.maybePingOwner(DefaultFileLockContentionHandler.java:203) at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock$1.run(DefaultFileLockManager.java:380) at org.gradle.internal.io.ExponentialBackoff.retryUntil(ExponentialBackoff.java:72) at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.lockStateRegion(DefaultFileLockManager.java:362) at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.lock(DefaultFileLockManager.java:293) at org.gradle.cache.internal.DefaultFileLockManager$DefaultFileLock.<init>(DefaultFileLockManager.java:164) at org.gradle.cache.internal.DefaultFileLockManager.lock(DefaultFileLockManager.java:110) at org.gradle.cache.internal.LockOnDemandCrossProcessCacheAccess.incrementLockCount(LockOnDemandCrossProcessCacheAccess.java:106) at org.gradle.cache.internal.LockOnDemandCrossProcessCacheAccess.acquireFileLock(LockOnDemandCrossProcessCacheAccess.java:168) at org.gradle.cache.internal.CrossProcessSynchronizingCache.put(CrossProcessSynchronizingCache.java:57) at org.gradle.api.internal.changedetection.state.DefaultFileAccessTimeJournal.setLastAccessTime(DefaultFileAccessTimeJournal.java:85) at org.gradle.internal.file.impl.SingleDepthFileAccessTracker.markAccessed(SingleDepthFileAccessTracker.java:51) at org.gradle.internal.classpath.DefaultCachedClasspathTransformer.markAccessed(DefaultCachedClasspathTransformer.java:209) at org.gradle.internal.classpath.DefaultCachedClasspathTransformer.transformFile(DefaultCachedClasspathTransformer.java:194) at org.gradle.internal.classpath.DefaultCachedClasspathTransformer.lambda$cachedFile$6(DefaultCachedClasspathTransformer.java:186) at org.gradle.internal.classpath.DefaultCachedClasspathTransformer$$Lambda$368/0x0000007001393a78.call(Unknown Source) at org.gradle.internal.UncheckedException.unchecked(UncheckedException.java:74) at org.gradle.internal.classpath.DefaultCachedClasspathTransformer.lambda$transformAll$8(DefaultCachedClasspathTransformer.java:233) at org.gradle.internal.classpath.DefaultCachedClasspathTransformer$$Lambda$372/0x0000007001398470.call(Unknown Source) at java.util.concurrent.FutureTask.run(java.base@17.0.10/FutureTask.java:264) at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64) at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:49) at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@17.0.10/ThreadPoolExecutor.java:1136) at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@17.0.10/ThreadPoolExecutor.java:635) at java.lang.Thread.run(java.base@17.0.10/Thread.java:840) A part of the process sample: 2097 Thread_3879661: Java: jar transforms Thread 12 + 2097 thread_start (in libsystem_pthread.dylib) + 8 [0x18c42eb80] ...removed for brevity... + 2097 Java_sun_nio_ch_DatagramChannelImpl_send0 (in libnio.dylib) + 84 [0x102ef371c] + 2097 __sendto (in libsystem_kernel.dylib) + 8 [0x18c3f612c] We have observed the following system logs around the time the issue manifests: 2025-08-26 22:03:23.280255+0100 0x3b2c00 Default 0x0 0 0 kernel: cfil_hash_entry_log:6088 <CFIL: Error: sosend_reinject() failed>: [4628 java] <UDP(17) in so 9e934ceda1c13379 50826943645358435 50826943645358435 ag> 2025-08-26 22:03:23.280267+0100 0x3b2c00 Default 0x0 0 0 kernel: cfil_service_inject_queue:4472 CFIL: sosend() failed 22 The issue seems to be rooted in the built-in Application Firewall, as disabling it “fixes” the issue. It doesn’t seem to matter that the process is on the “allow” list. We’re using Gradle 7.6.4, 8.0.2 and 8.14.1 in various repositories, so the version doesn’t seem to matter, neither does which repo we use. The most reliable way to reproduce is to run two Gradle builds at the same time or very quickly after each other. We would really appreciate a fix for this as it really negatively affects the developer experience. I've raised FB19916240 for this. Many thanks,
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Seeking clarification on macOS URLs with security scope
I just saw another post regarding bookmarks on iOS where an Apple engineer made the following statement: [quote='855165022, DTS Engineer, /thread/797469?answerId=855165022#855165022'] macOS is better at enforcing the "right" behavior, so code that works there will generally work on iOS. [/quote] So I went back to my macOS code to double-check. Sure enough, the following statement: let bookmark = try url.bookmarkData(options: .withSecurityScope) fails 100% of the time. I had seen earlier statements from other DTS Engineers recommending that any use of a URL be bracketed by start/stopAccessingSecurityScopedResource. And that makes a lot of sense. If "start" returns true, then call stop. But if start returns false, then it isn't needed, so don't call stop. No harm, no foul. But what's confusing is this other, directly-related API where a security-scoped bookmark cannot be created under any circumstances because of the URL itself, some specific way the URL was initially created, and/or manipulated? So, what I'm asking is if someone could elaborate on what would cause a failure to create a security-scoped bookmark? What kinds of URLs are valid for creation of security-scoped bookmarks? Are there operations on a URL that will then cause a failure to create a security-scoped bookmark? Is it allowed to pass the URL and/or bookmark back and forth between Objective-C and Swift? I'm developing a new macOS app for release in the Mac App Store. I'm initially getting my URL from an NSOpenPanel. Then I store it in a SQLite database. I may access the URL again, after a restart, or after a year. I have a login item that also needs to read the database and access the URL. I have additional complications as well, but they don't really matter. Before I get to any of that, I get a whole volume URL from an NSOpen panel in Swift, then, almost immediately, attempt to create a security-scoped bookmark. I cannot. I've tried many different combinations of options and flows of operation, but obviously not all. I think this started happening with macOS 26, but that doesn't really matter. If this is new behaviour in macOS 26, then I must live with it. My particular use requires a URL to a whole volume. Because of this, I don't actually seem to need a security-scoped bookmark at all. So I think I might simply get lucky for now. But this still bothers me. I don't really like being lucky. I'd rather be right. I have other apps in development where this could be a bigger problem. It seems like I will need completely separate URL handling logic based on the type of URL the user selects. And what of document-scoped URLs? This experience seems to strongly indicate that security-scoped URLs should only ever be document-scoped. I think in some of my debugging efforts I tried document-scoped URLs. They didn't fix the problem, but they seemed to make the entire process more straightforward and transparent. Can a single metadata-hosting file host multiple security-scoped bookmarks? Or should I have a separate one for each bookmark? But the essence of my question is that this is supposed to be simple operation that, in certain cases, is a guaranteed failure. There are a mind-bogglingly large number of potential options and logic flows. Does there exist a set of options and logic flows for which the user can select a URL, any URL, with the explicit intent to persist it, and that my app can save, share with helper apps, and have it all work normally after restart?
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donate INPlayMediaIntent to systerm, but not show in control center
I donate INPlayMediaIntent to systerm(donate success), but not show in control center My code is as follows let mediaItems = mediaItems.map { $0.inMediaItem } let intent = if #available(iOS 13.0, *) { INPlayMediaIntent(mediaItems: mediaItems, mediaContainer: nil, playShuffled: false, playbackRepeatMode: .none, resumePlayback: true, playbackQueueLocation: .now, playbackSpeed: nil, mediaSearch: nil) } else { INPlayMediaIntent(mediaItems: mediaItems, mediaContainer: nil, playShuffled: false, playbackRepeatMode: .none, resumePlayback: true) } intent.suggestedInvocationPhrase = "播放音乐" let interaction = INInteraction(intent: intent, response: nil) interaction.donate { error in if let error = error { print("Intent 捐赠失败: \(error.localizedDescription)") } else { print("Intent 捐赠成功 ✅") } }
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EXC_BAD_ACCESS (SIGSEGV) crash observed in NSDateFormatter APIs
(NSString*)getClienttime { NSDate* currentDate = [NSDate date]; NSDateFormatter* dateformatter = [[NSDateFormatter alloc] init]; dateformatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:8*3600]; dateformatter.locale= [NSLocale systemLocale]; [dateformatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; return [dateformatter stringFromDate:currentDate]?:@""; } the info of crash 1 libicucore.A.dylib icu::UnicodeString::copyFrom(icu::UnicodeString const&, signed char) (in libicucore.A.dylib) + 36 2 libicucore.A.dylib icu::DecimalFormatSymbols::operator=(icu::DecimalFormatSymbols const&) (in libicucore.A.dylib) + 64 3 libicucore.A.dylib icu::DecimalFormatSymbols::operator=(icu::DecimalFormatSymbols const&) (in libicucore.A.dylib) + 64 4 libicucore.A.dylib icu::DecimalFormat::DecimalFormat(icu::DecimalFormat const&) (in libicucore.A.dylib) + 188 5 libicucore.A.dylib icu::DecimalFormat::clone() const (in libicucore.A.dylib) + 48 6 libicucore.A.dylib icu::NumberFormat::createInstance(icu::Locale const&, UNumberFormatStyle, UErrorCode&) (in libicucore.A.dylib) + 188 7 libicucore.A.dylib icu::SimpleDateFormat::initialize(icu::Locale const&, UErrorCode&) (in libicucore.A.dylib) + 580 8 libicucore.A.dylib icu::SimpleDateFormat::SimpleDateFormat(icu::Locale const&, UErrorCode&) (in libicucore.A.dylib) + 332 9 libicucore.A.dylib icu::DateFormat::create(icu::DateFormat::EStyle, icu::DateFormat::EStyle, icu::Locale const&) (in libicucore.A.dylib) + 264 10 libicucore.A.dylib udat_open (in libicucore.A.dylib) + 396 11 CoreFoundation __cficu_udat_open (in CoreFoundation) + 72 12 CoreFoundation __ResetUDateFormat (in CoreFoundation) + 508 13 CoreFoundation __CreateCFDateFormatter (in CoreFoundation) + 324 14 Foundation -[NSDateFormatter _regenerateFormatter] (in Foundation) + 204 15 Foundation -[NSDateFormatter stringForObjectValue:] (in Foundation) + 104 16 ABC +[JMAContext getClienttime] (in DadaStaff) (JMAContext.m:73)
Topic: UI Frameworks SubTopic: UIKit
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WebView makes website content unaccessible on the top/bottom edges
I'm being faced with an issue when using SwiftUI's WebView on iOS 26. In many websites, the top/bottom content is unaccessible due to being under the app's toolbars. It feels like the WebView doesn't really understand the safe areas where it's being shown, because the content should start right below the navigation bar, and only when the user scrolls down, the content should move under the bar (but it's always reachable if the users scroll back up). Here's a demo of the issue: Here's a 'fix' by ensuring that the content of the WebView never leaves its bounds. But as you can see, it feels out of place on iOS 26 (would be fine on previous OS versions if you had a fully opaque toolbar): Code: struct ContentView: View { var body: some View { NavigationStack { WebView(url: URL(string: "https://apple.com")).toolbar { ToolbarItem(placement: .primaryAction) { Button("Top content covered, unaccessible.") {} } } } } } Does anyone know if there's a way to fix it using some sort of view modifier combination or it's just broken as-is?
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iOS26 UISearchbar and UISearchController cancellation issues
Is the Cancel button intentionally removed from UISearchBar (right side)? Even when using searchController with navigationItem also. showsCancelButton = true doesn’t display the cancel button. Also: When tapping the clear ("x") button inside the search field, the search is getting canceled, and searchBarCancelButtonClicked(_:) is triggered (Generally it should only clear text, not cancel search). If the search text is empty and I tap outside the search bar, the search is canceled. Also when I have tableview in my controller(like recent searches) below search bar and if I try to tap when editing started, action is not triggered(verified in sample too). Just cancellation is happening. In a split view controller, if the search is on the right side and I try to open the side panel, the search also gets canceled. Are these behaviors intentional changes, beta issues, or are we missing something in implementation?
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Detect if a widget is displayed in CarPlay vs. iPhone/iPad
I am looking into the new CarPlay support for systemSmall widgets introduced in iOS 26 (Apple documentation). I am trying to figure out if there is a way to programmatically detect whether the widget is currently being displayed on the iPhone/iPad home/lock screen or in CarPlay. So far, I haven’t found any information in the documentation or APIs that indicate how to distinguish between these environments. Is there an API, environment value, or best practice for handling this scenario? Thanks in advance for any insights!
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RealityKit / visionOS – Memory not released after dismissing ImmersiveSpace with USDZ models
Hi everyone, I’m encountering a memory overflow issue in my visionOS app and I’d like to confirm if this is expected behavior or if I’m missing something in cleanup. App Context The app showcases apartments in real scale using AR. Apartments are heavy USDZ models (hundreds of thousands of triangles, high-resolution textures). Users can walk inside the apartments, and performance is good even close to hardware limits. Flow The app starts in a full immersive space (RealityView) for selecting the apartment. When an apartment is selected, a new ImmersiveSpace opens and the apartment scene loads. The scene includes multiple USDZ models, EnvironmentResources, and dynamic textures for skyboxes. When the user dismisses the experience, we attempt cleanup: Nulling out all entity references. Removing ModelComponents. Clearing cached textures and skyboxes. Forcing dictionaries/collections to empty. Despite this cleanup, memory usage remains very high. Problem After dismissing the ImmersiveSpace, memory does not return to baseline. Check the attached screenshot of the profiling made using Instruments: Initial state: ~30MB (main menu). After loading models sequentially: ~3.3GB. Skybox textures bring it near ~4GB. After dismissing the experience (at ~01:00 mark): memory only drops slightly (to ~2.66GB). When loading the second apartment, memory continues to increase until ~5GB, at which point the app crashes due to memory pressure. The issue is consistently visible under VM: IOSurface in Instruments. No leaks are detected. So it looks like RealityKit (or lower-level frameworks) keeps caching meshes and textures, and does not free them when RealityView is ended. But for my use case, these resources should be fully released once the ImmersiveSpace is dismissed, since new apartments will load entirely different models and textures. Cleanup Code Example Here’s a simplified version of the cleanup I’m doing: func clearAllRoomEntities() { for (entityName, entity) in entityFromMarker { entity.removeFromParent() if let modelEntity = entity as? ModelEntity { modelEntity.components.removeAll() modelEntity.children.forEach { $0.removeFromParent() } modelEntity.clearTexturesAndMaterials() } entityFromMarker[entityName] = nil removeSkyboxPortals(from: entityName) } entityFromMarker.removeAll() } extension ModelEntity { func clearTexturesAndMaterials() { guard var modelComponent = self.model else { return } for index in modelComponent.materials.indices { removeTextures(from: &modelComponent.materials[index]) } modelComponent.materials.removeAll() self.model = modelComponent self.model = nil } private func removeTextures(from material: inout any Material) { if var pbr = material as? PhysicallyBasedMaterial { pbr.baseColor.texture = nil pbr.emissiveColor.texture = nil pbr.metallic.texture = nil pbr.roughness.texture = nil pbr.normal.texture = nil pbr.ambientOcclusion.texture = nil pbr.clearcoat.texture = nil material = pbr } else if var simple = material as? SimpleMaterial { simple.color.texture = nil material = simple } } } Questions Is this expected RealityKit behavior (textures/meshes cached internally)? Is there a way to force RealityKit to release GPU resources tied to USDZ models when they’re no longer used? Should dismissing the ImmersiveSpace automatically free those IOSurfaces, or do I need to handle this differently? Any guidance, best practices, or confirmation would be hugely appreciated. Thanks in advance!
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CarPlay: CPListTemplate item limit and image memory usage
I’m working with CPListTemplate in CarPlay and have run into two issues: Item limit: The documentation states that maximumItemCount is 500. In practice, when providing a list of ~2–4k items, only the first 500 are displayed. However, Apple Music on CarPlay seems to handle larger lists without this limitation. Is there an API-level approach or recommended pattern to support lists beyond this cap? Image memory usage: Cells don’t appear to load lazily. Even with small images, the first 500 items load all their artwork into memory immediately, resulting in ~400–700 MB usage and high CPU loads. This seems excessive for CarPlay environments. Is there a best practice for deferring or managing image loading within CPListTemplate? Any official guidance or known workarounds for these two issues would be very helpful.
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Xcode Crashes While Opening or Searching Specific Files
My Xcode crashed over and over again while I searing spefic file like "TingMusic". I have tried uninstall and install Xcode from 16.0 to 16.4, clear derived data folder, reboot my Mac, but none of these working. 😭 Translated Report (Full Report Below) Process: Xcode [1811] Path: /Applications/Xcode.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 16.4 (23792) Build Info: IDEApplication-23792000000000000~2 (16F6) App Item ID: 497799835 App External ID: 874973124 Code Type: ARM-64 (Native) Parent Process: launchd [1] User ID: 501 Date/Time: 2025-09-02 10:51:26.8582 +0800 OS Version: macOS 15.6 (24G84) Report Version: 12 Anonymous UUID: 9835064A-AD7C-EE47-64DE-49587A7EC956 Time Awake Since Boot: 320 seconds System Integrity Protection: enabled Crashed Thread: 0 Dispatch queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 6 Abort trap: 6 Terminating Process: Xcode [1811] Application Specific Information: abort() called Application Specific Signatures: isSameDocumentAsURL Kernel Triage: VM - (arg = 0x3) mach_vm_allocate_kernel failed within call to vm_map_enter Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x186d5e388 __pthread_kill + 8 1 libsystem_pthread.dylib 0x186d9788c pthread_kill + 296 2 libsystem_c.dylib 0x186ca0a3c abort + 124 3 IDEKit 0x10890d888 +[IDEAssertionHandler _handleAssertionWithLogString:assertionSignature:assertionReason:extraBacktrace:] + 964 4 IDEKit 0x10890dcf8 -[IDEAssertionHandler handleFailureInMethod:object:fileName:lineNumber:assertionSignature:messageFormat:arguments:] + 872 5 DVTFoundation 0x1047839a0 _DVTAssertionHandler + 412 6 DVTFoundation 0x104783b04 _DVTAssertionFailureHandler + 196 7 IDEKit 0x1086e5178 -[IDENavigableItemCoordinator _navigableItemForFilePath:inWorkspace:withSeenFileReferences:computedNavItemsByContainerFilePath:allowLeaf:] + 2240 8 IDEKit 0x1086e3d24 -[IDENavigableItemCoordinator _structureNavigableItemForFileURL:inWorkspace:error:] + 268 9 IDEKit 0x1086e4658 -[IDENavigableItemCoordinator structureNavigableItemForDocumentURL:inWorkspace:error:] + 152 10 IDEKit 0x1086e89bc +[IDENavigableItemCoordinator temporaryStructureItemForDocumentURL:forWorkspace:error:inScope:] + 116 11 IDEKit 0x1088689e0 +[IDEOpenQuicklySubpathGenerator subpathForURL:lineNumber:isFromProject:showFileName:fromWorkspace:withAttributes:] + 716 12 IDEKit 0x108869a88 -[IDEOpenQuicklyResult(SubPath) subPathForWorkspace:withAttributes:] + 356 13 IDEKit 0x1088eee54 -[IDEOpenQuicklyResultDisplayRecord subtitle] + 172 14 IDEKit 0x10894bb1c -[IDEOpenQuicklyResult(ViewExtension) cellViewForOutlineView:displayRecord:delegate:] + 596 15 IDEKit 0x108849564 -[IDEQuickSearchWindowController outlineView:viewForTableColumn:item:] + 72 16 AppKit 0x18ae314a8 -[NSTableView(NSTableViewViewBased) makeViewForTableColumn:row:] + 176 17 AppKit 0x18ae30c0c -[NSTableRowData _addViewToRowView:atColumn:row:] + 228 18 AppKit 0x18ae2ed5c -[NSTableRowData _initializeRowView:atRow:] + 328 19 AppKit 0x18ae2d8ec -[NSTableRowData _preparedRowViewForRow:storageHandler:] + 140 20 AppKit 0x18ae2d7bc -[NSTableRowData _addRowViewForVisibleRow:withPriorView:] + 268 21 AppKit 0x18ae2d5e4 -[NSTableRowData _addRowViewForVisibleRow:] + 316 22 AppKit 0x18ae2cdf0 -[NSTableRowData _updateVisibleRowEntries] + 640 23 AppKit 0x18ae2c854 -[NSTableRowData updateVisibleRowViews] + 612 24 AppKit 0x18ae2bf08 -[NSTableView layout] + 148 25 AppKit 0x18b8d0fa8 ___NSViewLayout_block_invoke + 632 26 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108 27 AppKit 0x18adeb8d8 _NSViewLayout + 96 28 AppKit 0x18b8c72cc __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 372 29 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108 30 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100 31 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696 32 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108 33 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100 34 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696 35 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108 36 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100 37 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696 38 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108 39 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100 40 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696 41 AppKit 0x18ade7000 NSPerformVisuallyAtomicChange + 108 42 AppKit 0x18adeb86c -[NSView _layoutSubtreeWithOldSize:] + 100 43 AppKit 0x18b8c7410 __36-[NSView _layoutSubtreeWithOldSize:]_block_invoke + 696
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Determining if an entitlement is real
This issue keeps cropping up on the forums and so I decided to write up a single post with all the details. If you have questions or comments: If you were referred here from an existing thread, reply on that thread. If not, feel free to start a new thread. Use whatever topic and subtopic is appropriate for your question, but also add the Entitlements tag so that I see it. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com" Determining if an entitlement is real In recent months there’s been a spate of forums threads involving ‘hallucinated’ entitlements. This typically pans out as follows: The developer, or an agent working on behalf of the developer, changes their .entitlements file to claim an entitlement that’s not real. That is, the entitlement key is a value that is not, and never has been, supported in any way. Xcode’s code signing machinery tries to find or create a provisioning profile to authorise this claim. That’s impossible, because the entitlement isn’t a real entitlement. Xcode reports this as a code signing error. The developer misinterprets that error [1] in one of two ways: As a generic Xcode code signing failure, and so they start a forums thread asking about how to fix that problem. As an indication that the entitlement is managed — that is, requires authorisation from Apple to use — and so they start a forums thread asking how to request such authorisation. The fundamental problem is step 1. Once you start claiming entitlements that aren’t real, you’re on a path to confusion. Note If you’re curious about how provisioning profiles authorise entitlement claims, read TN3125 Inside Code Signing: Provisioning Profiles. There are a couple of ways to check whether an entitlement is real. My preferred option is to create a new test project and use Xcode’s Signing & Capabilities editor to add the corresponding capability to it. Then look at what Xcode did. You might find that Xcode claimed a different entitlement, or added an Info.plist key, or did nothing at all. IMPORTANT If you can’t find the correct capability in the Signing & Capabilities editor, it’s likely that this feature is available to all apps, that is, it’s not gated by an entitlement or anything else. Another thing you can do is search the documentation. The vast majority of real entitlements are documented in Bundle Resources > Entitlements. IMPORTANT When you search for documentation, focus on the Apple documentation. If, for example, you search the Apple Developer Forums, you might be mislead by other folks who are similarly confused. If you find that you’re mistakenly trying to claim a hallucinated entitlement, the fix is trivial: Remove it from your .entitlements file so that your app starts to build again. Then add the capability using Xcode’s Signing & Capabilities editor. This will do the right thing. If you continue to have problems, feel free to ask for help here on the forums. See the top of this post for advice on how to do that. [1] Xcode 26.2, currently being seeded as Release Candidate, is much better about this (r. 155327166). Give it a whirl! Commonly Hallucinated Entitlements This section lists some of the more commonly hallucinated entitlements: com.apple.developer.push-notifications — The correct entitlement is aps-environment (com.apple.developer.aps-environment on macOS), documented here. There’s also the remote-notification value in the UIBackgroundModes property. com.apple.developer.in-app-purchase — There’s no entitlement for in-app purchase. Rather, in-app purchase is available to all apps with an explicit App ID (as opposed to a wildcard App ID). com.apple.InAppPurchase — Likewise. com.apple.developer.storekit — Likewise. com.apple.developer.in-app-purchase.non-consumable — Likewise. com.apple.developer.in-app-purchase.subscription — Likewise. com.apple.developer.app-groups — The correct entitlement is com.apple.security.application-groups, documented here. And if you’re working on the Mac, see App Groups: macOS vs iOS: Working Towards Harmony. com.apple.developer.background-modes — Background modes are controlled by the UIBackgroundModes key in your Info.plist, documented here. UIBackgroundModes — See the previous point. com.apple.developer.voip-push-notification — There’s no entitlement for this. VoIP is gated by the voip value in the UIBackgroundModes property. com.apple.developer.family-controls.user-authorization — The correct entitlement is com.apple.developer.family-controls, documented here. IMPORTANT As explained in the docs, this entitlement is available to all developers during development but you must request authorisation for distribution. com.apple.developer.device-activity — The DeviceActivity framework has the same restrictions as Family Controls. com.apple.developer.managed-settings — If you’re trying to use the ManagedSettings framework, that has the same restrictions as Family Controls. If you’re trying to use the ManagedApp framework, that’s not gated by an entitlement. com.apple.developer.callkit.call-directory — There’s no entitlement for the Call Directory app extension feature. com.apple.developer.nearby-interaction — There’s no entitlement for the Nearby interaction framework. com.apple.developer.secure-enclave — On iOS and its child platforms, there’s no entitlement required to use the Secure Enclave. For macOS specifically, any program that has access to the data protection keychain also has access to the Secure Enclave [1]. See TN3137 On Mac keychain APIs and implementations for more about the data protection keychain. com.apple.developer.networking.configuration — If you’re trying to configure the Wi-Fi network on iOS, the correct entitlement is com.apple.developer.networking.HotspotConfiguration, documented here. com.apple.developer.musickit — There is no MusicKit capability. Rather, enable MusicKit via the App Services column in the App ID editor, accessible from Developer > Certificates, Identifiers, and Profiles > Identifiers. com.apple.mail.extension — Creating an app extension based on the MailKit framework does not require any specific entitlement. com.apple.security.accessibility — There’s no entitlement that gates access to the Accessibility APIs on macOS. Rather, this is controlled by the user in System Settings > Privacy & Security. Note that sandboxed apps can’t use these APIs. See the Review functionality that is incompatible with App Sandbox section of Protecting user data with App Sandbox. com.apple.developer.adservices — Using the AdServices framework does not require any specific entitlement. [1] While technically these are different features, they are closely associated and it turns out that, if you have access to the data protection keychain, you also have access to the SE. Revision History 2025-12-09 Updated the Xcode footnote to mention the improvements in Xcode 26.2rc. 2025-11-03 Added com.apple.developer.adservices to the common hallucinations list. 2025-10-30 Added com.apple.security.accessibility to the common hallucinations list. 2025-10-22 Added com.apple.mail.extension to the common hallucinations list. Also added two new in-app purchase hallucinations. 2025-09-26 Added com.apple.developer.musickit to the common hallucinations list. 2025-09-22 Added com.apple.developer.storekit to the common hallucinations list. 2025-09-05 Added com.apple.developer.device-activity to the common hallucinations list. 2025-09-02 First posted.
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Payments paused
I got this email from Apple "Due to the discontinuation of content associated with your vendor number x, your payments have been paused. We will continue to monitor this account and release your payments once customer refunds have been settled." Does anyone know what happened? I didn't discontinue any content.
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