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Attaching procedural audio to an ARKit SCNNode
I’m developing an ARKit application where I aim to attach procedurally generated audio to detected planes in the environment. While using a static audio file with SCNAudioSource and SCNAudioPlayer works as expected, integrating procedural audio via AVAudioSourceNode does not produce any sound, nor does it generate any error messages: Stack Overflow Post Working Implementation with Static Audio File: let audioPlayer = SCNAudioPlayer(source: audioSource) node.addAudioPlayer(audioPlayer) Attempted Implementation with Procedural Audio: // Audio generation code } let audioPlayer = SCNAudioPlayer(avAudioNode: audioNode) node.addAudioPlayer(audioPlayer) In this setup, the AVAudioSourceNode successfully generates audio when connected directly to an AVAudioEngine. However, when used with SCNAudioPlayer and attached to an SCNNode, it fails to produce sound. What doesn’t work is creating some procedural audio with an AVAudioNode, as documented here: Apple docs Additionally, I explored the WWDC18 AR game project, SwiftShot, which utilizes SCNAudioPlayer(avAudioNode:). After updating it for the latest Xcode, the graphics function correctly, but the audio does not play. I also noted that the Apple documentation mentions an audioPlayerWithAVAudioNode: method, stating: Using this initializer is typically not necessary. Instead, call the audioPlayerWithAVAudioNode: method, which returns a cached audio player object if one for the specified AVAudioNode object has already been created and is available for use. However, this method does not appear to be available in Swift. Any insights or guidance on this matter would be greatly appreciated.
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229
Apr ’25
App in Unlisted Language
I am building a language learning app for a Unlisted Primary Language. Any suggestions or heads ups? My plan is to select english and go with it. Its unfortunate that I have to list a language learning app incorrectly and a tag for that language probably does not exist across the apple system.
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272
Jul ’25
VoiceOver Headings Accessibility Rotor with SwiftUI on iOS
Hi, On iOS, I'd like to mark views that are inside a LazyVStack as headers for VoiceOver (make them appear in the headings rotor). In a VStack, you just have add .accessibilityAddTraits(.isHeader) to your header view. However, if your view is in a LazyVStack, that won't work if the view is not visible. As its name implies, LazyVStack is lazy so that makes sense. There is very little information online about system rotors, but it seems you are supposed to use .accessibilityRotor() with the headings system rotor (.accessibilityRotor(.headings)) outside of the LazyVStack. Something like the following. .accessibilityRotor(.headings) { ForEach(entries) { entry in // entry.id must be the same as the id of the SwiftUI view it is about AccessibilityRotorEntry(entry.name, id: entry.id) } } It kinds of work, but only kind of. When using .accessibilityAddTraits(.isHeader) in a VStack, the view is in the headings rotor as soon as you change screen. However, when using .accessibilityRotor(.headings), the headers (headings?) are not in the headings rotor at the time the screen appears. You have to move the accessibility focus inside the screen before your headers show up. I'm a beginner in regards to VoiceOver, so I don't know how a blind user used to VoiceOver would perceive this, but it feels to me that having to move the focus before the headers are in the headings rotor would mean some users would miss them. So my question is: is there a way to have headers inside a LazyVStack (and are not necessarily visible at first) to be in the headings rotor as soon as the screen appears? (be it using .accessibilityRotor(.headings) or anything else) The "SwiftUI Accessibility: Beyond the basics" talk from WWDC 2021 mentions custom rotors, not system rotors, but that should be close enough. It mentions that for accessibilityRotor to work properly it has to be applied on an accessibility container, so just in case I tried to move my .accessibilityRotor(.headings) to multiple places, with and without the accessibilityElement(children: .contain) modifier, but that did not seem to change the behavior (and I could not understand why accessibilityRotor could not automatically make the view it is applied on an accessibility container if needed). Also, a related question: when using .accessibilityRotor(.headings) on a screen, is it fine to mix uses of .accessibilityRotor(.headings) and .accessibilityRotor(.headings)? In a screen with multiple type of contents (something like ScrollView { VStack { MyHeader(); LazyVStack { /* some content */ }; LazyVStack { /* something else */ } } }), having to declare all headers in one place would make code reusability harder. Thanks
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108
Jun ’25
How to use core spotlight ?
Watched videos, blog post and downloaded their projects and there the core spot lights works accordingly. I copied code to an empty project and did the same as what they did but still is not working os: macOS and iOS on coredataobject I settled up a attribute to index for spotlight and in object it self I putted the attribute name in display name for spotlight. static let shared = PersistenceController() var spotlightDelegate: NSCoreDataCoreSpotlightDelegate? @MainActor static let preview: PersistenceController = { let result = PersistenceController(inMemory: true) let viewContext = result.container.viewContext for _ in 0..<10 { let newItem = Item(context: viewContext) newItem.timestamp = Date() } do { try viewContext.save() } catch { let nsError = error as NSError fatalError("Unresolved error \(nsError), \(nsError.userInfo)") } return result }() let container: NSPersistentContainer init(inMemory: Bool = false) { container = NSPersistentContainer(name: "SpotLightSearchTest") if inMemory { container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: "/dev/null") } container.loadPersistentStores(completionHandler: { [weak self] (storeDescription, error) in if let error = error as NSError? { fatalError("Unresolved error \(error), \(error.userInfo)") } if let description = self?.container.persistentStoreDescriptions.first { description.setOption(true as NSNumber, forKey: NSPersistentHistoryTrackingKey) description.type = NSSQLiteStoreType if let coordinator = self?.container.persistentStoreCoordinator { self?.spotlightDelegate = NSCoreDataCoreSpotlightDelegate( forStoreWith: description, coordinator: coordinator ) self?.spotlightDelegate?.startSpotlightIndexing() } } }) container.viewContext.automaticallyMergesChangesFromParent = true } } in my @main view struct SpotLightSearchTestApp: App { let persistenceController = PersistenceController.shared var body: some Scene { WindowGroup { ContentView() .environment(\.managedObjectContext, persistenceController.container.viewContext) .onContinueUserActivity(CSSearchableItemActionType) {_ in print("") } } } } onContinueUserActivity(CSSearchableItemActionType) {_ in print("") } never gets triggered. Sow What am I missing that they dont explain in the blog post or videos ?
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Mar ’25
Having trouble with Accessibility API of the ApplicationServices framework
After replacing Big Sur OSX 11.0 with the latest 11.5, my app's AXObserverAddNotification methods fails. Here is sample code I tested from StackOverflow: https://stackoverflow.com/questions/853833/how-can-my-app-detect-a-change-to-another-apps-window AXUIElementRef app = AXUIElementCreateApplication(82695); // the pid for front-running Xcode 12.5.1 CFTypeRef frontWindow = NULL; AXError err = AXUIElementCopyAttributeValue( app, kAXFocusedWindowAttribute, &frontWindow );     if ( err != kAXErrorSuccess ){         NSLog(@"failed with error: %i",err);     } NSLog(@"app: %@  frontWindow: %@",app,frontWindow); 'frontWindow' reference is never created and I get the error number -25204. It seems like the latest Big Sur 11.5 has revised the Accessibility API or perhaps there is some permission switch I am unaware of that would make things work. What am I doing wrong?
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821
Jun ’25
Autonomous Single App Mode(ASAM) in macOS
Hello I tried implementing the ASAM for macOS as per apple guidelines with configuration profile mentioned here but didn't had any success. Then Apple suggested to use requestGuidedAccessSession in macOS but that is only supported in macOS Catalyst but that also didn't work with valid config profiles too. Did anyone get success with ASAM mode without assessment entitltlement?
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267
Jul ’25
Apple greets Global Accessibility Awareness Day with severe accessibility violations on macOS
I'm reposting here my FB17602742, submitted yesterday: The strong wording of this message comes from years of Apple ignoring the needs of users who can't tolerate UI animations and convulsions. At this point, it's clear that Apple is either intentionally harming users like me or simply doesn't care about meeting even the most basic accessibility standards on macOS. Yes, many UI animations and convulsions can, fortunately, be disabled - but not through straightforward UI controls. Instead, users are forced to look for obscure Terminal commands found scattered across the Internet. The "Reduce motion" checkbox in System Settings is simply a fake control that doesn't do anything - instead of actually disabling all UI animations and convulsions. What's worse, two of the most offensive UI animations cannot be disabled at all. Apple has consistently dismissed requests to let users disable the following UI animations: Scroll bar rollover highlight effect (introduced on macOS 10.7.3). Every time the cursor passes over a scroll bar, it gets highlighted. This draws the user's attention to random scroll bars for no reason - just because the cursor happened to pass over them. It results in HUNDREDS of unnecessary, annoying events of distraction daily!
 Expand/collapse animation of NSOutlineView (e.g., when opening/closing folders in the list view in the Finder, or any other app using outline views). This animation is extremely distracting, irritating, and time-wasting. Global Accessibility Awareness Day is approaching. Dear Apple, Please adhere to the most basic accessibility standards. Stop the needless suffering of countless users like me. Let us disable the two aforementioned UI convulsions. Thank you for your attention to the issue.
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164
May ’25
Accessibility Personal Voice Issue with iOS & iPadOS Beta 1-6
Please refer to Feedback report: FB19701007 The Personal Voice file created in English changes to either Spanish or Chinese and no longer works properly. This has been happening since Beta 1 of iOS/iPadOS 26. I have been unable to pinpoint what causes this to occur. Possibly downloading foreign voices to a device or using different voices via AVSpeechSynthesizer. I run an app in Xcode on my device that prints to the console info about the installed voices. Initially after creation here is the output: Voice Identifier: com.apple.speech.personalvoice.16173F8D-DFB0-4024-98CC-69D965FD96A4 Language: en-US Then I hear a Spanish accent and find this: Voice Identifier: com.apple.speech.personalvoice.16173F8D-DFB0-4024-98CC-69D965FD96A4 Language: es-MX Currently it isn't working and here is the output: Voice Identifier: com.apple.speech.personalvoice.16173F8D-DFB0-4024-98CC-69D965FD96A4 Language: zh-CN Note that the voice file on all three above is the same. No matter what the user does, the created voice file should never be able to change languages. On my test devices I reset them all by erasing all content and settings and creating a new English Personal Voice and the issue persists. A side issue is the toggle share across devices doesn't remain off if turned off. I tried to not share to see if that could be the cause, but the toggle turns on automatically. It won’t remain off.
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869
Aug ’25
PHPickerViewController No Auto Focus
The issue is, I cannot auto acquire bluetooth keyboard focus in PHPickerViewController after enabling 'Full Keyboard Access' in my IPhone 14 with iOS version 18.3.1. The keyboard focus in PHPickerViewController will show, however, after I tapped on the blank space of the PHPickerViewController. How to make the focus on at the first place then? I'm using UINavigationController and calling setNavigationBarHidden(true, animated: false). Then I use this controller to present PHPickerViewController using some configuration setup below. self.configuration = PHPickerConfiguration() configuration.filter = .any(of: filters) configuration.selectionLimit = selectionLimit if #available(iOS 15.0, *), allowOrdering { configuration.selection = .ordered } configuration.preferredAssetRepresentationMode = .current Finally I set the delegate to PHPickerViewController and call UINavigationController.present(PHPickerViewController, animated: true) to render it. Also I notice animation showing in first video then disappear.
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Mar ’25
Keyboard navigation not working in native iOS Wallet interface
Hi guys, I'm facing an issue with the native interface to add a card into the wallet - does someone have some ideas on how to fix/work around that? STEPS TO REPRODUCE: Disable VoiceOver (Settings → Accessibility → VoiceOver → Off). Connect and confirm that you can navigate other iOS interfaces using an external keyboard. In any app, present a PKAddPassesViewController with a valid .pkpass file. When the Wallet “Add Pass” sheet appears, attempt to navigate using only the external keyboard (Tab/Arrow/Enter). Observe that focus does not move to the Cancel or Add buttons, and no elements receive keyboard focus. EXPECTED RESULT: All interactive elements in PKAddPassesViewController (e.g., Cancel and Add) should be fully keyboard accessible without requiring VoiceOver. Users should be able to navigate, select, and complete actions using only a hardware keyboard. ACTUAL RESULT: Keyboard navigation is not possible. No elements receive focus. Users cannot activate Cancel or Add buttons using keyboard input. The only way to interact is by touch or enabling VoiceOver, which does not satisfy keyboard accessibility requirements. IMPACT: Violates WCAG 2.1 Success Criterion 2.1.1 (Keyboard Accessible). Prevents keyboard-only users (including users with motor disabilities) from adding passes to Wallet. Affects users of external keyboards who rely on tab/arrow navigation. Creates an inconsistent accessibility experience compared to other iOS system modals.
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1.4k
Aug ’25
BLE Device Not Appearing in Scan List on iOS After Name Change
I'm encountering an issue related to BLE device discovery on iOS. I have a BLE peripheral device that I initially connected to using an iOS device. After this connection, the BLE device's advertised name was programmatically changed by the peripheral. Now, when I try to scan for this device using other iOS devices, it does not appear in the scan results in most apps — including nRF Connect and our own custom BLE app that uses CoreBluetooth. A few observations: The device is definitely powered on and advertising (confirmed via Android). The name change is reflected correctly on Android and on the iOS device that originally connected to it. Other iOS devices no longer see the device in their scan list.
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355
Jul ’25
VoiceOver Not Scrolling to Focused TableView Cell
I have a view dynamically overlaid on a UITableView with proper padding (added when certain conditions are met). When VoiceOver focuses on a cell beneath this overlay, the focused element does not scroll into view. I’ve noticed similar behavior in Apple’s first-party Podcasts app. Please find the attached image for reference. How can I resolve this issue and ensure VoiceOver scrolls the focused cell into view?
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210
Apr ’25
ApplePay Merchant Session - Could not create SSL/TLS secure channel issue
As part of apple pay implementation we are trying to create a merchant session by trying to connect to apple endpoint https://apple-pay-gateway-cert.apple.com/paymentservices/startSession. While trying to do so we are facing an error “An error occurred while sending the request. The request was aborted: Could not create SSL/TLS secure channel.” . I call the validation url by passing to a C# .Net Framework 4.8 Web API. The API setups an HttpClient with the Merchant Identity Validation Certificate found in my apple account and calls the validation url passing in the required Json Validation Object. When I call PostAsync() I get an exception with the above error message Code is working successfully on my local machine but facing this issue while deployed on Dev / Model environment for testing. We have used Azure app service for deployment and TLS version 1.2 already present here. We have used the Merchant Identity certificate that was issued and have also checked with networking and infrastructure team to make its not an issue from our side. Does anyone have any other idea what could be causing this error. Thank you, Supriya
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120
Jun ’25
Frames rotated and shifted in landscape for iOS simulator
When I try to get the frames of a AXUIElementRef using AXUIElementCopyAttributeValue(element, (CFStringRef)attribute, &result) the frames are shifted and rotated on the iOS simulator. I get the same frames when using the Accessibility Inspector when the Max is selected as the host. When I switch the host to the iOS simulator the frames are correct. How is the Accessibility Inspector getting the correct frames? And how can I do the same in my app?
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137
Jun ’25