Hello, I'm sporadically getting the unknown CoreHaptics error described in the title, when trying to create a CHHapticPatternPlayer from an .ahap file — this does not occur in a repeatable manner, unfortunately... This occurs in a SpriteKit game, running on both iOS 17 and 18. Anyone know what the error means, since it's apparently undocumented? Note that the haptics engine is started right before creating the pattern, and the start request doesn't appear to fail... Thanks, D.

Will the restrictions on callkit be lifted in China in 2025? If so, how can you legally use callkit in China?

In the past, when using Lightning, many external devices had to go through MFi certification. However, since the iPhone 15 switched from Lightning to USB-C, is MFi certification still required? Our company has developed several UVC devices, and we have confirmed that iPads can read frames from external cameras through the external device type in AVFoundation. However, this is not supported on iPhones. We are currently exploring feasible ways to enable UVC device support on iPhones. Is MFi certification the only option? If so, is the MFi certification process for USB-C the same as it was for Lightning? Does it still require purchasing an MFi chip and manufacturing specially designed USB-C cables?

I've established proper authorization for general music api calls, but when I use that same authorization to retrieve metadata for the latest music feeds (see https://developer.apple.com/documentation/applemusicfeed/requesting-a-feed-export), I get a 401 Unauthorized error. As per the documentation, I'm simply issuing a GET against https://api.media.apple.com/v1/feed/album/latest. Are there different entitlements needed for the Music Feed API?

On an iPhone running iOS 26 beta 5, url(for: FilePath("subdir/asset.mov")) most always throws this error: The URL for “subdir/asset.mov” couldn’t be retrieved: “asset.mov” couldn’t be copied to “subdir” because an item with the same name already exists. Yet, contents(at: FilePath("subdir/asset.mov")) always returns Data for a playable AVMovie. How can I avoid this url(for:) error? The asset pack in question is downloaded. The error persists even after pack deletion, redownload, relaunch, and combinations of that. // Assets repo root subdir.aar subdir/asset.mov subdir/asset_thumb.heic subdir/Manifest.json // Manifest.json { "assetPackID": "subdir", "downloadPolicy": { "onDemand": {} }, "fileSelectors": [ { "directory": "subdir", }, ], "platforms": [ "iOS", "visionOS" ] } xcrun ba-package subdir/Manifest.json -o subdir.aar xcrun ba-serve --host 192.168.0.10 -p 443 subdir.aar

mac os 系统版本：26.0 (25A354) Xcode版本：Version 26.0 (17A324) 项目编译报错 `SwiftExplicitDependencyCompileModuleFromInterface arm64 /Users/zhz/Library/Developer/Xcode/DerivedData/ModuleCache.noindex/AssetsLibrary-HTIJ05N58KN3.swiftmodule /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.0.sdk/usr/lib/swift/AssetsLibrary.swiftmodule/arm64e-apple-ios.swiftinterface:10:25: error: 'ALAssetsLibrary' is unavailable in iOS: Use PHPhotoLibrary from the Photos framework instead 8 | public import _StringProcessing 9 | public import _SwiftConcurrencyShims 10 | extension AssetsLibrary.ALAssetsLibrary { | `- error: 'ALAssetsLibrary' is unavailable in iOS: Use PHPhotoLibrary from the Photos framework instead 11 | #if compiler(>=5.3) && $NonescapableTypes 12 | @available(iOS, introduced: 9.0, deprecated: 9.0, obsoleted: 26.0) /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.0.sdk/System/Library/Frameworks/AssetsLibrary.framework/Headers/ALAssetsLibrary.h:80:12: note: 'ALAssetsLibrary' was obsoleted in iOS 26.0 78 | 79 | OS_EXPORT AL_DEPRECATED(4, "Use PHPhotoLibrary from the Photos framework instead") 80 | @interface ALAssetsLibrary : NSObject { | `- note: 'ALAssetsLibrary' was obsoleted in iOS 26.0 81 | @package 82 | id _internal; /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS26.0.sdk/usr/lib/swift/AssetsLibrary.swiftmodule/arm64e-apple-ios.swiftinterface:1:1: error: failed to build module 'AssetsLibrary'; this SDK is not supported by the compiler (the SDK is built with 'Apple Swift version 6.2 effective-5.10 (swiftlang-6.2.0.17.14 clang-1700.3.17.1)', while this compiler is 'Apple Swift version 6.2 effective-5.10 (swiftlang-6.2.0.19.9 clang-1700.3.19.1)'). Please select a toolchain which matches the SDK.

Hello, I'm new to the Swift MusicKit API and am starting with the implementation in iOS 16. I'm getting stuck on an issue where there is no background or text color associated with the Artwork object. Is this something you have to make an additional property request for, and if so, how do you do that? var catalogSearch = MusicCatalogResourceRequest<Album>(matching: \.id, equalTo: item.id) let catalogResponse = try await request.response() guard let firstItem = catalogResponse.items.first else { return } In this example, firstItem.artwork only contains the url and what look like incorrect max width/height values. here's a printout of firstItem.artwork Optional(Artwork(   urlFormat: "musicKit://artwork/library/5F37858D-F46B-4F12-BA67-40FA8DD63D87/{w}x{h}?at=item&fat=&id=7718670444435992305&lid=5F37858D-F46B-4F12-BA67-40FA8DD63D87&mt=music&aat=Music122/v4/37/25/f5/3725f515-249f-7b91-77bb-f479cd48201c/22UMGIM32254.rgb.jpg", maximumWidth: 0, maximumHeight: 0 ))

The two ScreenCaptureKit WWDC22 sessions show how to capture with the new framework but the retina factor is hardcoded to 2 in SCStreamConfiguration. When using on a non-retina display, the screencapture is floating on the upper-left corner of the image buffer. There does not seem to be a simple way to retrieve the retina factor from the SCShareableContent data (when configuring the capture). When processing the streaming output, the SCStreamFrameInfo attachment is supposed to have a scaleFactor property but .scaleFactor does not return a value. I have found out that the attachement dictionary contains SCStreamUpdateFrameDisplayResolution. This entry gives me the retina factor but it is not an official SCStreamFrameInfo key. I list the keys to access it. What is the proper way with ScreenCapture to handle the retina factors ?

I am calling AVSampleBufferDisplayLayer.flush from a background queue but this seems to occasionally crash the app. I am calling it from the same thread I pass to - (void)requestMediaDataWhenReadyOnQueue:(dispatch_queue_t)queue usingBlock:(void (^)(void))block;. My question is, is this API threadsafe, or do I need to call flush from the main thread? Or is there another issue that I am not considering? It seems strange to me that this API would trigger an autolayout pass. 0 CoreFoundation 0x00000001bb384e38 __exceptionPreprocess + 164 1 libobjc.A.dylib 0x00000001b451b8d8 objc_exception_throw + 59 2 CoreAutoLayout 0x00000001d7e09e84 _AssertAutoLayoutOnAllowedThreadsOnly + 327 3 CoreAutoLayout 0x00000001d7e00e60 -[NSISEngine withBehaviors:performModifications:] + 35 4 UIKitCore 0x00000001be58fd40 -[UIView _postMovedFromSuperview:] + 671 5 UIKitCore 0x00000001bd56dfec -[UIView(Internal) _addSubview:positioned:relativeTo:] + 1903 6 UIKitCore 0x00000001bda57ccc -[_UITextLayoutCanvasView textViewportLayoutController:configureRenderingSurfaceForTextLayoutFragment:] + 455 7 UIFoundation 0x00000001c588bc9c __48-[NSTextViewportLayoutController layoutViewport]_block_invoke_4 + 151 8 UIFoundation 0x00000001c5836b50 __80-[NSTextLayoutManager enumerateViewportElementsFromLocation:options:usingBlock:]_block_invoke + 43 9 UIFoundation 0x00000001c580e158 __83-[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]_block_invoke_2 + 535 10 CoreFoundation 0x00000001bb385350 __NSARRAY_IS_CALLING_OUT_TO_A_BLOCK__ + 23 11 CoreFoundation 0x00000001bb3b24dc -[__NSSingleObjectArrayI enumerateObjectsWithOptions:usingBlock:] + 91 12 UIFoundation 0x00000001c580de28 __83-[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:]_block_invoke + 775 13 UIFoundation 0x00000001c57f7504 -[NSTextLayoutManager enumerateTextLayoutFragmentsFromLocation:options:usingBlock:] + 659 14 UIFoundation 0x00000001c57f7264 -[NSTextLayoutManager enumerateViewportElementsFromLocation:options:usingBlock:] + 99 15 UIFoundation 0x00000001c57f6d7c -[NSTextViewportLayoutController layoutViewport] + 1299 16 UIKitCore 0x00000001bd580a3c +[UIView(Animation) performWithoutAnimation:] + 75 17 UIKitCore 0x00000001bd5582d0 -[_UITextLayoutCanvasView layoutSubviews] + 139 18 UIKitCore 0x00000001bd5544c8 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1979 19 QuartzCore 0x00000001bca277fc CA::Layer::layout_if_needed(CA::Transaction*) + 499 20 QuartzCore 0x00000001bca3aeb0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 147 21 QuartzCore 0x00000001bca4c234 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 443 22 QuartzCore 0x00000001bca81630 CA::Transaction::commit() + 651 23 MediaToolbox 0x00000001ca8d0da0 videoQueueRemote_SetProperty + 367 24 AVFCore 0x00000001cad191b4 __63-[AVSampleBufferVideoRenderer _setContentLayerOnFigVideoQueue:]_block_invoke + 179 25 libdispatch.dylib 0x00000001c299cf88 _dispatch_client_callout + 19 26 libdispatch.dylib 0x00000001c29ac574 _dispatch_lane_barrier_sync_invoke_and_complete + 55 27 AVFCore 0x00000001cad190d0 -[AVSampleBufferVideoRenderer _setContentLayerOnFigVideoQueue:] + 167 28 AVFCore 0x00000001cad14674 -[AVSampleBufferVideoRenderer _createVideoQueue:errorStep:] + 195 29 AVFCore 0x00000001cad14ac8 -[AVSampleBufferVideoRenderer createVideoQueue:] + 55 30 AVFCore 0x00000001cad179cc -[AVSampleBufferVideoRenderer flushWithRemovalOfDisplayedImage:completionHandler:] + 439 31 App 0x0000000102370214 -[AVSampleBufferDisplayLayer flush] + 51

I'm using iCloud Music Library. I’m using macOS 14.1 (23B74) and iOS 17.1. i’m using MusicKit to find songs that do not have artwork. On iOS, Song.artwork will be nil for items I know do not have artwork. On macOS, Song.artwork is not nil. However when the songs are shown in Music.app, they do not have Artwork. Is this expected? Alternately, is there a more correct way to determine that a Song has no Artwork? I have also filed FB13315721. Thank you for any tips!

Hi, is there a way to display the animated cover art in an app? Not every album has a cover art but for the ones that have one I would like to display them instead of the artwork. Thank you :)

I am using MusicKit ApplicationMusicPlayer to play music in my app. Everything works fine as long as I'm not playing large playlists that contain hundreds of songs. When I to play collection of songs that is larger than around 300 I'm always getting the error message saying: "Prepare to play failed" UserInfo={NSDebugDescription=Prepare to play failed, NSUnderlyingError=0x121d42dc0 {Error Domain=MPMusicPlayerControllerErrorDomain Code=9 "Remote call timed out" UserInfo={NSDebugDescription=Remote call timed out}}})) It doesn't matter if songs are downloaded to the device or not. I am aware that there is another initializer for player's queue that accepts Playlist instances but in my app users can choose to sort playlist tracks in different order than the default and that makes using that initializer not feasible for me. I tried everything I could think of, I tried to fall back on MPMusicPlayerController and pass array of MPMusicPlayerPlayParameters to it but the result was the same. typealias QueueEntry = ApplicationMusicPlayer.Queue.Entry let player = ApplicationMusicPlayer.shared let entries: [QueueEntry] = tracks .compactMap { guard let song = $0 as? Song else { return nil } return QueueEntry(song) } Task(priority: .high) { [player] in do { player.queue = .init(entries, startingAt: nil) try await player.play() // prepareToPlay failed } catch { print(error) } }

Since iOS 12 it has become difficult to detect the end of playback using the system music player. In earlier iOS versions, the now playing item would be set nil and you would receive a notification that the player stopped. In iOS 12 and later, nowPlayingItem still contains the current song and the only notification you get is MPMusicPlayerControllerPlaybackStateDidChangeNotification with the playbackState set to MPMusicPlaybackStatePaused. Pressing pause in my car (or any remote access) generates the same conditions making it difficult to correctly detect the difference. It would be nice if they added a notification that playback was done (similar to the other players). Any suggestions?

I’m a tracking company and have my own tracking platform. Looking for the solution that using tag device for animals like Air Tags but running on my platform. Is there a way to allow my platform to interface with the Find My Phone to get the location data of my Tags ?

So I have been using the iOS 18 beta and I would like to say first and foremost really great update I love the timed messages and the car Sickness stuff that’s awesome but my only problem with the update is screen time. I have screen time on my phone and when I updated to iOS 18 beta I can’t seem to claim more screen time. I have my screen time to where I can ignore it once I run out But in the new update I can seem press the button all I want but It wont give me more screen time. This Is what I imagine a minor fix and I would really appreciate if this was fixed soon. But other than that small detail Amazing update love what your doing over here at apple!

I have sync 3.4 on my ford F150 - CarPlay does not work with iOS 18.1. Sync says I don’t have anything connected. Something is up.

I'm attempting to use AVExternalStorageDevice.requestAccess on iOS 18 using Xcode 16. When calling requestAccess, a dialog does appear, but the completionHandler closure is never called to indicate whether access was granted. If using the async version, the function just never returns. Calling requestAccess also results in a mediaServicesWereReset (-11819) error without fail. Supposedly, "the system only presents the dialog to a person the first time your app calls the method." That also doesn't appear to be the case. The dialog appears every time requestAccess is called, regardless of previous invocations and whether "Allow" or "Don't Allow" was selected. The dialog itself says "You can change this in Privacy settings." I cannot find this permission anywhere in the Settings app, neither under Privacy &amp; Security nor under the app-specific settings page. Has anyone else experienced these issues? Am I missing something here? I did suspect permissions issues and tried adding a NSRemovableVolumesUsageDescription entry to the app. This did not appear to change anything.

I am facing an Issue regarding the voicemail feature. when someone calls me, it would go to voicemail only if I click on the voicemail icon. If I do not respond at all to the incoming call, it does not give the caller an option to record voicemail. I have tried switching the voicemail on and off, its working on other devices Iphone 14 and 15 for my family member, just not for me. How can i resolve this?

Hello, I try to get the Video from an HDMI USB capture card and show it in a PreviewLayer with 60fps. The device I am using (ShadowCast 2) is supporting 1080p with 60fps in "yuvs" and "420v". This is my code with stripped away uninteresting stuff and removed error handling to build the previewLayer. I am using the AVFrameRateRange because the capture device is not directly supporting 60.00 but <AVFrameRateRange: 0x600000875680 60.00 - 60.00 (1000000 / 60000240 - 1000000 / 60000240)> fps. @Observable final class AVFoundationService: AVService { // Live View private let session: AVCaptureSession = .init() var previewLayer: AVCaptureVideoPreviewLayer { let layer = AVCaptureVideoPreviewLayer(session: session) layer.videoGravity = .resizeAspect return layer } var activeVideoDevice: AVCaptureDevice? { // TODO: implement correct logic if let device = videoDevices.first(where: { $0.localizedName.contains("Shadow") }) { return device } return AVCaptureDevice.default(for: .video) } func setupStreamDemo(completion: @escaping (Error?) -> Void) { session.beginConfiguration() if let device = activeVideoDevice { do { let input = try AVCaptureDeviceInput(device: device) if session.canAddInput(input) { session.addInput(input) } else { print("explode") } for format in device.formats { let dimensions = CMVideoFormatDescriptionGetDimensions(format.formatDescription) if dimensions.width == 1920 && dimensions.height == 1080 && format.formatDescription.mediaSubType.description == "'yuvs'" { let foundFPS = format.videoSupportedFrameRateRanges.first { Int($0.minFrameRate) == 60 && Int($0.minFrameRate) == 60 } try device.lockForConfiguration() device.activeFormat = format device.activeVideoMinFrameDuration = foundFPS!.minFrameDuration device.activeVideoMaxFrameDuration = foundFPS!.minFrameDuration device.unlockForConfiguration() } } } catch { return completion(error) } } session.commitConfiguration() session.startRunning() completion(nil) } } I am using the following code in SwiftUI to show the AVCaptureVideoPreviewLayer. struct VideoPreviewView: NSViewRepresentable { private let previewLayer: AVCaptureVideoPreviewLayer func makeNSView(context: Context) -> NSView { let view = NSView() view.layer = self.previewLayer view.layer?.frame = view.bounds return view } func updateNSView(_ nsView: NSView, context: Context) { if let layer = nsView.layer as? AVCaptureVideoPreviewLayer { layer.session = self.previewLayer.session } } } When I now run my app, it will ignore whatever I set on device.activeVideoMinFrameDuration and/or device.activeVideoMaxFrameDuration. If I set it to 10 fps - it's running with 30, if I set 60 it is running with 30. If I start in parallel to my app QuickTime and start a "Recording" from my USB Capture Card, it will switch to 60fps mode. I am on Mac Sequoia 15.0 with Xcode 16.0. What I am doing wrong?

I have an app that gets data from Music.app with both the iTunesLibrary and MusicKit. iTunesLibrary has ITLibArtist.sortName and ITLibAlbum.sortTitle and ITLibAlbum.sortAlbumArtist. I can’t seem to find an equivalent in MusicKit. How are those properties obtained using MusicKit? Thanks. FYI I have filed FB15554956 on this. You also may see my code at https://github.com/bolsinga/itunes_json