Hello, I am a deaf-blind wheelchair user, and I program in Swift using a braille display. I’m reaching out for your help on an issue I’ve been struggling to solve. Basically, when I extract a CMSampleBuffer from an AVAsset of a video, it comes with the Audio Format ID as Linear PCM. However, when I try to pass this CMSampleBuffer to write another video using AVAssetWriter, the video ends up muted. The audio settings of the output video are configured to MPEG-4 AAC, but the input CMSampleBuffer has the Audio Format ID as Linear PCM. I would like to request an extension for CMSampleBuffer that converts Linear PCM audio to MPEG-4 AAC. I’ve searched extensively and couldn’t find anything. Looking forward to your help. Thank you.

Currently for my SwiftUI application i'm using dismissWindow() to close my windows. However, I want to make my app compatible on macOS 13 to enable a wider audience. My current usage of this function is as follows: func reloadContentViewAfterDelete() { @Environment(\.openWindow) var openWindow @Environment(\.dismissWindow) var dismissWindow dismissWindow(id: "content") openWindow(id: "content") }

I am able to setup and schedule a background refresh task as well as manually trigger it via Xcode and the simulator tied to my iPhone 11 Pro test phone using the e -l objc -- (void)[[BGTaskScheduler sharedScheduler] _simulateLaunchForTaskWithIdentifier: However, it won't execute on the app on it's own. And yes, the pinfo.list entries are correct and match! I know the scheduler is not exact on timing but it's just not executing on its own. Since I can trigger manually it I'm pretty sure the code is good but I must be missing something. I created an observable object for this code and the relevant parts look like this: class BackgroundTaskHandler: ObservableObject { static let shared = BackgroundTaskHandler() var taskState: BackgroundTaskState = .idle let backgroundAppRefreshTask = "com.opexnetworks.templateapp.shell.V1.appRefreshTask" func registerBackgroundTask() { BGTaskScheduler.shared.register(forTaskWithIdentifier: backgroundAppRefreshTask, using: nil) { task in self.handleAppRefresh(task: task as! BGAppRefreshTask) } self.updateTaskState(to: .idle, logMessage: "✅ Background app refresh task '\(backgroundAppRefreshTask)' registered.") BGTaskScheduler.shared.register(forTaskWithIdentifier: backgroundTaskIdentifier, using: nil) { task in self.handleProcessingTask(task: task as! BGProcessingTask) } self.updateTaskState(to: .idle, logMessage: "✅ Background task identifier '\(backgroundTaskIdentifier)' registered.") } // Handle the app refresh task private func handleAppRefresh(task: BGAppRefreshTask) { self.updateTaskState(to: .running, logMessage: "🔥 app refresh task is now running.") PostNotification.sendNotification(title: "Task Running", body: "App refresh task is now running.") let queue = OperationQueue() queue.maxConcurrentOperationCount = 1 let operation = BlockOperation { self.doSomeShortTaskWork() } task.expirationHandler = { self.updateTaskState(to: .expired, logMessage: "💀 App refresh task expired before completion.") PostNotification.sendNotification(title: "Task Expired", body: "App refresh task expired before completion \(self.formattedDate(Date())).") operation.cancel() } operation.completionBlock = { if !operation.isCancelled { self.taskState = .completed } task.setTaskCompleted(success: !operation.isCancelled) let completionDate = Date() UserDefaults.standard.set(completionDate, forKey: "LastBackgroundTaskCompletionDate") self.updateTaskState(to: .completed, logMessage: "🏁 App refresh task completed at \(self.formattedDate(completionDate)).") PostNotification.sendNotification(title: "Task Completed", body: "App refresh task completed at: \(completionDate)") self.scheduleAppRefresh() // Schedule the next one } queue.addOperation(operation) } func scheduleAppRefresh() { // Check for any pending task requests BGTaskScheduler.shared.getPendingTaskRequests { taskRequests in let refreshTaskIdentifier = self.backgroundAppRefreshTask let refreshTaskAlreadyScheduled = taskRequests.contains { $0.identifier == refreshTaskIdentifier } if refreshTaskAlreadyScheduled { self.updateTaskState(to: .pending, logMessage: "⚠️ App refresh task '\(refreshTaskIdentifier)' is already pending.") // Iterate over pending requests to get details for taskRequest in taskRequests where taskRequest.identifier == refreshTaskIdentifier { let earliestBeginDate: String if let date = taskRequest.earliestBeginDate { earliestBeginDate = self.formattedDate(date) } else { earliestBeginDate = "never" } self.updateTaskState(to: .pending, logMessage: "⚠️ Pending Task: \(taskRequest.identifier), Earliest Begin Date: \(earliestBeginDate)") } // Optionally, show a warning message to the user in your app PostNotification.sendNotification(title: "Pending Tasks", body: "App refresh task is already pending. Task scheduling cancelled.") return } else { // No pending app refresh task, so schedule a new one let request = BGAppRefreshTaskRequest(identifier: refreshTaskIdentifier) request.earliestBeginDate = Date(timeIntervalSinceNow: 15 * 60) // Earliest in 15 minutes do { try BGTaskScheduler.shared.submit(request) self.taskState = .scheduled self.updateTaskState(to: .scheduled, logMessage: "✅ App refresh task '\(refreshTaskIdentifier)' successfully scheduled for about 15 minutes later.") PostNotification.sendNotification(title: "Task Scheduled", body: "App refresh task has been scheduled to run in about 15 minutes.") } catch { print("Could not schedule app refresh: \(error)") self.taskState = .failed self.updateTaskState(to: .failed, logMessage: "❌ Failed to schedule app refresh task.") } } } } // Short task work simulation private func doSomeShortTaskWork() { print("Doing some short task work...") // Simulate a short background task (e.g., fetching new data from server) sleep(5) print("Short task work completed.") } In my AppDelegate I trigger the registerBackground task in the didFinishLaunchingWithOptions here: BackgroundTaskHandler.shared.registerBackgroundTask() And I scheduled it here in the launch view under a task when visible: .task { BackgroundTaskHandler.shared.scheduleAppRefresh() } I've also tried the last in the AppDelegate after registering. either way the task schedules but never executes.

Since I updated my project I'm getting this error Stored property 'base' of 'Sendable'-conforming struct 'AnyShape' has non-sendable type '(CGRect) -> Path'; this is an error in the Swift 6 language mode I get this error at that struct, more specifically on the base variable public struct AnyShape: Shape { private var base: (CGRect) -> Path public init<S: Shape>(shape: S) { base = shape.path(in:) } public func path(in rect: CGRect) -> Path { base(rect) } } I have no idea how to solve this issue, I've been looking on the internet for same issues and get nothing yet

I have a user who keeps crashing on his iOS 18 device, I need some help~ Exception 1, Code 26, Subcode 8 > Attempted to dereference garbage pointer 0x1a. 0 ImageIO IIOScanner::getVal32() + 36 1 ImageIO PSDReadPlugin::initialize(IIODictionary*) + 620 2 ImageIO PSDReadPlugin::initialize(IIODictionary*) + 620 3 ImageIO IIOReadPlugin::callInitialize() + 400 4 ImageIO IIO_Reader::initImageAtOffset(CGImagePlugin*, unsigned long, unsigned long, unsigned long) + 164 5 ImageIO IIOImageSource::makeImagePlus(unsigned long, IIODictionary*) + 832 6 ImageIO IIOImageSource::getPropertiesAtIndexInternal(unsigned long, IIODictionary*) + 72 7 ImageIO IIOImageSource::createThumbnailAtIndex(unsigned long, IIODictionary*, int*) + 1352 8 ImageIO CGImageSourceCreateThumbnailAtIndex + 740 9 Photos _createDecodedImageUsingImageIOWithFileUrlOrData + 856 10 Photos __91-[PHImageIODecoder decodeImageFromData:orFileURL:options:existingRequestHandle:completion:]_block_invoke_2 + 176 11 libdispatch.dylib _dispatch_call_block_and_release + 32 12 libdispatch.dylib _dispatch_client_callout + 20 13 libdispatch.dylib _dispatch_continuation_pop + 596 14 libdispatch.dylib _dispatch_async_redirect_invoke + 580 15 libdispatch.dylib _dispatch_root_queue_drain + 392 16 libdispatch.dylib _dispatch_worker_thread2 + 156 17 libsystem_pthread.dylib _pthread_wqthread + 228

Trying to migrate to Swift 6. However getting this error when using SwiftUI StoreKit purchase environment. Sending main actor-isolated value of type 'PurchaseAction' with later accesses to nonisolated context risks causing data races @Environment(\.purchase) private var purchase let result = try await purchase(product)

I'm using UIKit to display a long list of large images inside a SwiftUI ScrollView and LazyHStack using UIViewControllerRepresentable. When an image is loaded, I'm using SDWebImage to load the image from the disk. As the user navigates through the list and continues to load more images, more memory is used and is never cleared, even as the images are unloaded by the LazyHStack. Eventually, the app reaches the memory limit and crashes. This issue persists if I load the image with UIImage(contentsOfFile: ...) instead of SDWebImage. How can I free the memory used by UIImage when the view is removed? ScrollView(.horizontal, showsIndicators: false) { LazyHStack(spacing: 16) { ForEach(allItems) { item in TestImageDisplayRepresentable(item: item) .frame(width: geometry.size.width, height: geometry.size.height) .id(item.id) } } .scrollTargetLayout() } import UIKit import SwiftUI import SDWebImage class TestImageDisplay: UIViewController { var item: TestItem init(item: TestItem) { self.item = item super.init(nibName: nil, bundle: nil) } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } override func viewDidLoad() { super.viewDidLoad() let imageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 200, height: 200)) imageView.center = view.center view.addSubview(imageView) imageView.sd_setImage(with: item.imageURL, placeholder: nil) } } struct TestImageDisplayRepresentable: UIViewControllerRepresentable { var item: TestItem func makeUIViewController(context: Context) -> TestImageDisplay { return TestImageDisplay(item: item) } func updateUIViewController(_ uiViewController: TestImageDisplay, context: Context) { uiViewController.item = item } }

I ran into a problem recently with my production app and an update for iOS 18. In this example I was using a new API added to the RC candidate of iOS 18.0, using this API as an example, I couldn't find a satisfactory way to avoid crashing on iOS 18.1 where the API was not available. I had plenty of users running the iOS 18.1 Beta and ultimately it's my fault if a version of my app did work, and then didn't after an update.... This code causes a crash on iOS 18.1 beta as the .appleSleepingBreathingDisturbances API doesn't seem to have made it's way into the beta: if #available(iOS 18.0, *), #available(watchOS 11, *) { healthKitTypesToRead.insert(HKQuantityType.quantityType(forIdentifier: .appleSleepingBreathingDisturbances)!) } I tried this but it still crashed on 18.1: if #available(iOS 18.0, *), #available(watchOS 11, *) { if let newQuantity = HKQuantityType.quantityType(forIdentifier: .appleSleepingBreathingDisturbances) { healthKitTypesToRead.insert(newQuantity) } } In the end the only way I could resolve this was the following: if #available(iOS 18.1, *){ // Do nothing } else if #available(iOS 18.0, *), #available(watchOS 11, *) { if let newQuantity = HKQuantityType.quantityType(forIdentifier: .appleSleepingBreathingDisturbances) { healthKitTypesToRead.insert(newQuantity) } } This seems like a poor solution and I'll have to ensure I release a new version of the app once iOS 18.1 has the available API added to enable support for the feature. How could I have checked availability for this API correctly without causing the app to crash? I'm asking this question more as a Swift language feature rather than issue with the specific API as I'm sure that will get resolved soon anyway. Thanks

Why is there inconstancy of appearing the keyboard tool bar Item with tab view? Try to go to second tab and focus the field. Sometimes it does not appear (in my more complex project it does not appear >90% times). import SwiftUI struct MainTabView: View { var body: some View { TabView { FirstTabView() .tabItem { Label("Tab 1", systemImage: "house") } SecondTabView() .tabItem { Label("Tab 2", systemImage: "star") } } } } struct FirstTabView: View { @State private var text = "" var body: some View { NavigationStack { VStack { TextField("Enter something 1", text: $text) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } .toolbar { ToolbarItemGroup(placement: .keyboard) { Button("Done") { UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil) } } } } } } struct SecondTabView: View { @State private var text = "" var body: some View { NavigationStack { VStack { TextField("Enter something 2", text: $text) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } .toolbar { ToolbarItemGroup(placement: .keyboard) { Button("Done") { UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil) } } } } } } #Preview { MainTabView() }

hi, i have this problem. i need to use a webview to charge a file locally, to be more specific a file SCORM, like a mini web project. so i was making tests and the way to see all te content is in a http server. i mean if i click in the index.html of the file in my computer the page doesn't charge all the content, so i opened visual studio code and running Live Server thats provide me a project in http, well with that the project works. in android i'm make the example with something called WebViewAssetLoader, with that i can setup asset loader to handle local asset paths and override a WebView client, and if request is to local file, intercept and serve local. i want to know if in swift i have a way to intecept it a serve local this is one of the a lot of ways that i was tried and this is the example that works for me in android

Hello everyone, is it possible to embed a USDZ file (Roomplan) in an HTML5 website and view it in 3D? Or do I need to convert the USDZ file into a GLTF file?

I have a FairPlay-encrypted HLS stream and played the video in an AVPlayer.And I want to generate scrubbing thumbnails using the AVAssetImageGenerator. Also, I am able to generate thumbnails for clear streams but get errors for protected content. *How to generate thumbnails for protected content. func getImageThumbnail(forTime: CMTime) { let generator = AVAssetImageGenerator(asset: asset) generator.appliesPreferredTrackTransform = true generator.cancelAllCGImageGeneration() generator.generateCGImagesAsynchronously(forTimes: [NSValue(time: forTime)]) { [weak self] requestedTime, image, actualTime, result, error in if let error = error { print("Error generate: \(error.localizedDescription)") return } if let image = image { DispatchQueue.main.async { let image = UIImage(cgImage: image).jpegData(compressionQuality: 1.0) self?.playerImg.image = UIImage(data: image!) } } } }

In my project, I used two metal shaders in two ways. One is link to SwiftUI's modifier .colorEffect(ShaderLibrary.myShader()), which metal shader marked as [[stichable]]. Another one is a custom CIFilter, which kernel been written in external "C" closure. Because custom CIFilter must add build rules so Xcode can compile it, so I added -fcikernel to Metal Compiler and -cikernel to Metal Linker from Build Settings, just like Apple's document told me that. But the result is weird, if I add rules, custom CIFilter works, [[stichable]] shader doesn't work. if I delete rules, and comment out code of CIFilter(for avoiding warning), [[stichable]] shader works, but now I can't use my custom CIFilter. Actually, once these two shaders works well in my project, but when I updated Xcode from 15 to 16, it became weird, the 2 shaders can't exist at same time. Even though I go back to Xcode 15, I can't save them. I have no idea, please help, thank you. XCode 16 / iOS 18 on iPhone 14 Pro

I'm working on an iOS app that integrates with Spotify for authentication. I’m facing a problem where the app doesn’t handle URL schemes and app state transitions properly. Specifically, when Spotify redirects back to my app, it either doesn’t handle the URL correctly or doesn’t transition between states as expected. The authorization for spotify is successful, then my app reopens and nothing happens after that. Expected Behavior: When Spotify redirects to my app, it should correctly handle the URL and process authentication parameters. Actual Behavior: Even with URL handling code commented out, the app reopens from Spotify, which suggests a possible issue with how URL schemes or app state transitions are managed. The app’s state transitions don’t seem to be handled as expected. Troubleshooting Steps Taken: Verified URL schemes and redirect URIs. Implemented application(_:open:options:) for URL handling. Tested various app states (foreground, background, suspended). //This code should open my app using the URL from spotify but this code never triggers and yet my app opens anyways// func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey: Any] = [:]) -> Bool { print("Received URL: (url.absoluteString)") handleSpotifyURL(url) return true } private func handleSpotifyURL(_ url: URL) { // URL handling logic } func applicationDidBecomeActive(_ application: UIApplication) { // Logic for when the app becomes active } //Using latest software for xcode, testing on iphone 14 with up to date software and up to date spotify As mentioned - have ensure that my info plist is configured correctly, that spotify authorizes correctly, that the redirect URI is correct in my code and on spotify for developers. From the testing I've done I imagine there is something wrong with how my app gets opened vs how it should get opened with the callback URL triggering func application(_ app: UIApplication, open url: URL, options:.... What I am expecting is that when spotify triggers the callback url - my app reopens with the above function and from there can retrieve the access token etc.

Updating an app to use strict concurrency is not compiling in Swift 6 with strict concurrency enabled. I am getting the following error in Xcode Version 16.0 (16A242d). private func queryHealthKit() async throws -&gt; ( [HKSample]?, [HKDeletedObject]?, HKQueryAnchor? ) { try await withCheckedThrowingContinuation { continuation in // Create a predicate that returns only samples created within the last 24 hours. let endDate = Date() let startDate = endDate.addingTimeInterval(-24.0 * 60.0 * 60.0) let datePredicate = HKQuery.predicateForSamples( withStart: startDate, end: endDate, options: [.strictStartDate, .strictEndDate]) // Create the query. let query = HKAnchoredObjectQuery( type: caffeineType, predicate: datePredicate, anchor: anchor, limit: HKObjectQueryNoLimit ) { (_, samples, deletedSamples, newAnchor, error) in // When the query ends, check for errors. if let error { continuation.resume(throwing: error) } else { continuation.resume(returning: (samples, deletedSamples, newAnchor)) } } store.execute(query) } } The error is on ** continuation.resume(returning: (samples, deletedSamples, newAnchor)) ** and the error is Task-isolated value of type '([HKSample]?, [HKDeletedObject]?, HKQueryAnchor?)' passed as a strongly transferred parameter; later accesses could race. How to solve this error?

ld: symbol(s) not found for architecture arm64 clang++: error: linker command failed with exit code 1 (use -v to see invocation) Undefined symbol: nominal type descriptor for CoreGraphics.CGFloat Undefined symbol: type metadata for CoreGraphics.CGFloat Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.BinaryFloatingPoint in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.Encodable in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.FloatingPoint in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.Hashable in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.Comparable in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.Equatable in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.Decodable in CoreGraphics Undefined symbol: protocol conformance descriptor for CoreGraphics.CGFloat : Swift.SignedNumeric in CoreGraphics

Hello, I'd like to ask a very fundamental question about JSONEncoder: how to sort keys in a specific order when encoding a dictionary to JSON text? I know there is an option called JSONEncoder.OutputFormatting.sortedKeys, but it sorts the keys only in lexicographic order. I want to sort the keys using a different comparator, such as String.localizedStandardCompare(_:), which achieves the "Finder-like" order. The reason why I ask this question is because I have a localization tool that works with String Catalog (xcstrings file, which is a JSON), but every time my tool serializes an xcstrings file, it always messes up the keys in lexicographic order (I used JSONEncoder + .sortedKeys). Meanwhile, Xcode 16 always serializes the string keys into the "Finder-like" order. As a result, my tool always generates a huge diff when manipulating the xcstrings even when making only a small modification to it. So I am wondering how Xcode 16 implements the String Catalog tool to serialize the JSON in "Finder-like" order. It would be great if JSONEncoder could do that too. Or, maybe I can use another serialization method to implement this behavior?

Hi, I'm working on a sample app to enable two-way data transfer between Mac, iOS, and Android devices. The devices will be in close proximity to each other. To implement this, I used Google's Nearby API, which supports cross-platform communication. The approach has worked well for Mac and iOS devices, even across different networks. However, while Mac and Android devices communicate successfully when on the same network, they fail to discover each other when on different networks. Mac :left_right_arrow: iOS-----Works fine in all scenarios. Mac :left_right_arrow: Android-------Works only when both devices are on the same network, but fails to discover each other on different networks. Is there any alternative approach to achieve reliable cross-platform communication, or any technical documentation that could help with this? Thanks in advance!

I integrated the Apple in app SDK, but when using SK Products Request to obtain the product ID, it was empty and invalid. I checked the app backend status and product status, and they are both normal. What's going on? I hope to receive an effective answer and solution as soon as possible. Thank you very much!

The following code runs fine when compiled with Swift 5, but crashes when compiled with Swift 6 (stack trace below). In the draw method, commenting out the addCompletedHandler line fixes the problem. I'm testing on iOS 18.0 and see the same behavior in both the simulator and on a device. What's going on here? import Metal import MetalKit import UIKit class ViewController: UIViewController { @IBOutlet var metalView: MTKView! private var commandQueue: MTLCommandQueue? override func viewDidLoad() { super.viewDidLoad() guard let device = MTLCreateSystemDefaultDevice() else { fatalError("expected a Metal device") } self.commandQueue = device.makeCommandQueue() metalView.device = device metalView.enableSetNeedsDisplay = true metalView.isPaused = true metalView.delegate = self } } extension ViewController: MTKViewDelegate { func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {} func draw(in view: MTKView) { guard let commandQueue, let commandBuffer = commandQueue.makeCommandBuffer() else { return } commandBuffer.addCompletedHandler { _ in } // works with Swift 5, crashes with Swift 6 commandBuffer.commit() } } Here's the stack trace: Thread 10 Queue : connection Queue (serial) #0 0x000000010581c3f8 in _dispatch_assert_queue_fail () #1 0x000000010581c384 in dispatch_assert_queue () #2 0x00000002444c63e0 in swift_task_isCurrentExecutorImpl () #3 0x0000000104d71ec4 in closure #1 in ViewController.draw(in:) () #4 0x0000000104d71f58 in thunk for @escaping @callee_guaranteed (@guaranteed MTLCommandBuffer) -> () () #5 0x0000000105ef1950 in __47-[CaptureMTLCommandBuffer _preCommitWithIndex:]_block_invoke_2 () #6 0x00000001c50b35b0 in -[MTLToolsCommandBuffer invokeCompletedHandlers] () #7 0x000000019e94d444 in MTLDispatchListApply () #8 0x000000019e94f558 in -[_MTLCommandBuffer didCompleteWithStartTime:endTime:error:] () #9 0x000000019e95352c in -[_MTLCommandQueue commandBufferDidComplete:startTime:completionTime:error:] () #10 0x0000000226ef50b0 in handleMainConnectionReplies () #11 0x00000001800c9690 in _xpc_connection_call_event_handler () #12 0x00000001800cad90 in _xpc_connection_mach_event () #13 0x000000010581a86c in _dispatch_client_callout4 () #14 0x0000000105837950 in _dispatch_mach_msg_invoke () #15 0x0000000105822870 in _dispatch_lane_serial_drain () #16 0x0000000105838c10 in _dispatch_mach_invoke () #17 0x0000000105822870 in _dispatch_lane_serial_drain () #18 0x00000001058237b0 in _dispatch_lane_invoke () #19 0x00000001058301f0 in _dispatch_root_queue_drain_deferred_wlh () #20 0x000000010582f75c in _dispatch_workloop_worker_thread () #21 0x00000001050abb74 in _pthread_wqthread ()