Overview

I am developing a standard UAC 2.0 device and encountered an issue where the channel names do not update according to the iChannelNames field in the Class Specific AS Interface Descriptor when switching between different channel counts. For example: AS1 (6 channels) is configured with the following channel names: ADAT 1, ADAT 2, ADAT 3, ADAT 4, HP L, HP R AS2 (4 channels) is configured with: ADAT 1, ADAT 2, HP L, HP R However, when switching from AS1 (6 channels) to AS2 (4 channels), the channel names displayed in Audio MIDI Setup do not reflect the change as expected. The actual result is: ADAT 1, ADAT 2, ADAT 3, ADAT 4 The system simply hides the last two channels; the names of the remaining channels are not updated. Initial Topology My original topology was as follows: Later, I discovered that macOS uses the iChannelNames field from the Input Terminal to display channel names. Therefore, I modified the USB device descriptors and updated the topology to the following: To distinguish the channel names for different channel counts, each Input Terminal is assigned a unique iChannelNames value. This method worked perfectly on macOS 15. However, after updating to macOS 26, this topology no longer displays the correct channel names. Question On macOS 26, what is the correct method to ensure that the channel names update dynamically when switching between different audio channel configurations?

App is repeatedly rejected under Guideline 2.5.1 for referencing the private API:_SecCertificateIsValid Reported custom framework CommonLibrary.framework. The SDK is written in Objective-C and uses only public Security APIs. It does not use any deprecated APIs. We have verified the framework binary using nm, otool, and strings, and _SecCertificateIsValid does not appear in exported or hidden symbols. Bitcode is disabled, dead-code stripping is enabled, and the Release build uses -Os. Despite this, App Store Connect continues to detect _SecCertificateIsValid. We have attached herewith screenshots of our analysis for the reference. Can Apple’s server-side analysis or Security.framework internals still surface _SecCertificateIsValid? Is there a recommended way for SDK authors to prevent this symbol from being flagged?

I’m seeking guidance on how to move an enrollment forward that has stalled. I submitted my application for the Apple Developer Program on Feb-2, and the 48-hour processing window has now passed. have already reached out via the formal support channel but have not received a response beyond the automated acknowledgment. This delay is currently blocking the scheduled distribution of a macOS application and impacting our development timeline.

Hello, I have implemented Low-Latency Frame Interpolation using the VTFrameProcessor framework, based on the sample code from https://developer.apple.com/kr/videos/play/wwdc2025/300. It is currently working well for both LIVE and VOD streams. However, I have a few questions regarding the lifecycle management and synchronization of this feature: 1. Common Questions (Applicable to both Frame Interpolation & Super Resolution) 1.1 Dynamic Toggling Do you recommend enabling/disabling these features dynamically during playback? Or is it better practice to configure them only during the initial setup/preparation phase? If dynamic toggling is supported, are there any recommended patterns for managing VTFrameProcessor session lifecycle (e.g., startSession / endSession timing)? 1.2 Synchronization Method I am currently using CADisplayLink to fetch frames from AVPlayerItemVideoOutput and perform processing. Is CADisplayLink the recommended approach for real-time frame acquisition with VTFrameProcessor? If the feature needs to be toggled on/off during active playback, are there any concerns or alternative approaches you would recommend? 1.3 Supported Resolution/Quality Range What are the minimum and maximum video resolutions supported for each feature? Are there any aspect ratio restrictions (e.g., does it support 1:1 square videos)? Is there a recommended resolution range for optimal performance and quality? 2. Frame Interpolation Specific Questions 2.1 LIVE Stream Support Is Low-Latency Frame Interpolation suitable for LIVE streaming scenarios where latency is critical? Are there any special considerations for LIVE vs VOD? 3. Super Resolution Specific Questions 3.1 Adaptive Bitrate (ABR) Stream Support In ABR (HLS/DASH) streams, the video resolution can change dynamically during playback. Is VTLowLatencySuperResolutionScaler compatible with ABR streams where resolution changes mid-playback? If resolution changes occur, should I recreate the VTLowLatencySuperResolutionScalerConfiguration and restart the session, or does the API handle this automatically? 3.2 Small/Square Resolution Issue I observed that 144x144 (1:1 square) videos fail with error:   "VTFrameProcessorErrorDomain Code=-19730: processWithSourceFrame within VCPFrameSuperResolutionProcessor failed" However, 480x270 (16:9) videos work correctly. minimumDimensions reports 96x96, but 144x144 still fails. Is there an undocumented restriction on aspect ratio or a practical minimum resolution? 3.3 Scale Factor Selection supportedScaleFactors returns [2.0, 4.0] for most resolutions. Is there a recommended scale factor for balancing quality and performance? Are there scenarios where 4.0x should be avoided? The documentation on this specific topic seems limited, so I would appreciate any insights or advice. Thank you.

when I share the App Store link for my app FlexPath on say iMessages; the screenshot generated with the shared link is that of the Apple Watch’s screenshot and not the iPhone’s screenshots i have reloaded the images with new builds to fix the issue. Checked my localization settings. but I can’t fix it! please help.

Currently i am trying really hard to create experience like the Apple fitness app. So the main view is a single day and the user can swipe between days. The week would be displayed in the toolbar and provide a shortcut to scroll to the right day. I had many attempts at solving this and it can work. You can create such an interface with SwiftUI. However, changing the data on every scroll makes limiting view updates hard and additionally the updates are not related to my code directly. Instruments show me long updates, but they belong to SwiftUI and all the advice i found does not apply or help. struct ContentView: View { @State var journey = JourneyPrototype(selection: 0) @State var position: Int? = 0 var body: some View { ScrollView(.horizontal) { LazyHStack(spacing: 0) { ForEach(journey.collection, id: \.self) { index in Listing(index: index) .id(index) } } .scrollTargetLayout() } .scrollTargetBehavior(.paging) .scrollPosition(id: $position) .onChange(of: position) { oldValue, newValue in journey.selection = newValue ?? 0 journey.update() } .onScrollPhaseChange { oldPhase, newPhase in if newPhase == .idle { journey.commit() } } } } struct Listing: View { var index: Int var body: some View { List { Section { Text("Title") .font(.largeTitle) .padding() } Section { Text("\(index)") .font(.largeTitle) .padding() } Section { Text("1 ") Text("2 ") Text("3 ") Text("4 ") Text("5 ") Text("6 ") } } .containerRelativeFrame(.horizontal) } } @Observable class JourneyPrototype { var selection: Int var collection: [Int] var nextUp: [Int]? init(selection: Int) { self.selection = selection self.collection = [selection] Task { self.collection = [-2,-1,0,1,2] } } func update() { self.nextUp = [ self.selection - 2, self.selection - 1, selection, self.selection + 1, self.selection + 2 ] } func commit() { self.collection = self.nextUp ?? self.collection self.nextUp = nil } } #Preview { ContentView() } There are some major Problem with this abstracted prototype ScrollView has no good trigger for the update, because if i update on change of the position, it will update much more than once. Thats why i had to split calculation and applying the diff The LazyHStack is not optimal, because there are only 5 View in the example, but using HStack breaks the scrollPosition Each scroll updates all List, despite changing only 2 numbers in the array. AI recommended to append and remove, which does nothing about the updates. In my actual Code i do this with Identifiable data and the Problem is the same. So the data itself is not the problem? Please consider, this is just the rough prototype to explain the problem, i am aware that an array of Ints is not ideal here, but the problem is the same in Instruments and much shorter to post. Why am i posting this? Scrolling through dynamic data is required for many apps, but there is no proper solution to this online. Github and Blogs are fine with showing a progress indicator and letting the user wait, some probably perform worse than this prototype. Other solutions require UIKit like using a UIPageViewController. But even using this i run in small hitches related to layout. Important consideration, my data for the scrollview is too big to be calculated upfront. 100 years of days that are calculated for my domain logic take too long, so i have no network request, but the need to only act on a smaller window of data. Instruments shows long update for one scroll action tested on a iPhone SE 2nd generation ListRepresentable has 7 updates and takes 17ms LazySubViewPlacements has 2 updates and takes 8ms Other long updates are too verbose to include I would be very grateful for any help.

Hello, I’m posting here to seek guidance or visibility regarding a delayed Apple Developer Program enrollment. I completed my organization enrollment over three weeks ago and provided a valid D-U-N-S number, which is correctly listed and verifiable. Since submitting the enrollment: The status has remained unchanged I’ve contacted Apple Developer Support three times via email I’ve received no response or timeline updates There is no option shown to request a phone call At this point, I’m unable to proceed with TestFlight, app distribution, or further development planning, and the lack of communication has made it difficult to understand next steps or expected timelines. If anyone from Apple Support or the community can advise: Whether this delay is expected If additional verification steps are required Or how best to escalate appropriately I’d really appreciate the guidance. Thank you for your time.

Missing recommended icon. The bundle does not contain an alternate app icon for iPhone / iPod Touch of exactly '120x120' pixels, in .png format for iOS versions >= 10.0. To support older versions of iOS, the icon may be required in the bundle outside of an asset catalog. Make sure the Info.plist file includes appropriate entries referencing the file. See https://developer.apple.com/documentation/bundleresources/information_property_list/cfbundleicons (90890) Missing Icon. The Info.plist key CFBundleIcons.CFBundleAlternateIcons contains an entry “newIcon” that references asset “newIcon.” No such asset is present in the asset catalog. (90895) I configured multiple icon settings in Xcode 26 version. I added new Icons in the asset file. However, after packaging and uploading the app to the AppStore, it kept giving me an error message saying that some content was missing. Looking at the documentation, it doesn't seem to say that starting from Xcode 13, we can configure through the asset file?

Problem: CoreML produces NaN on GPU (works fine on CPU) when running transformer attention with fused QKV projection on macOS 26.2. Root cause: The common::fuse_transpose_matmul optimization pass triggers a Metal kernel bug when sliced tensors feed into matmul(transpose_y=True). Workaround: pipeline = ct.PassPipeline.DEFAULT pipeline.remove_passes(['common::fuse_transpose_matmul']) mlmodel = ct.convert(model, ..., pass_pipeline=pipeline) Minimal repro: https://github.com/imperatormk/coreml-birefnet/blob/main/apple_bug_repro.py Affected: Any ViT/Swin/transformer with fused QKV attention (BiRefNet, etc.) Has anyone else hit this? Filed FB report too.

My procedural animation using IKRig occasionally jitters and throws this warning. It completely breaks immersion. getMoCapTask: Rig must be of type kCoreIKSolverTypePoseRetarget Any idea where to start looking or what could be causing this?

Hello, My app has been approved on the App Store, but the in-app purchases are still under review. This is the first time I'm publishing an app with in-app purchases. During sandbox testing, everything worked correctly. Is it normal for there to be a validation delay for in-app purchases after the app approval? Or is there a specific action I need to take, given that this is my first experience with in-app purchases? Thank you in advance.

I've paid the amount and the amounts deducted from my account , and its been 5 days , but still my developer account is not verified , how to deal with this .

Consider the following code on iOS: struct ContentView: View { @State private var timerInterval = Date(timeIntervalSince1970: 0) ... Date(timeIntervalSince1970: 0) var body: some View { VStack { ProgressView( timerInterval: timerInterval, countsDown: true ) Button { let now = Date() let then = now.addingTimeInterval(5) timerInterval = now ... then } label: { Text("Start") } } .padding() } } When I tap on the Start button, the progress view starts animating as expected, and its label is displaying the remaining time. However, at the very end, when the countdown reaches zero, the blue bar of the progress view doesn't reach zero and still has some progress left forever. Is this the expected behavior or a bug? Is there a way to make the bar reach zero without implementing my own custom view? Thanks in advance!

Hi everyone, With the rapid growth of digital banking, payments, and AI-driven financial services, building secure and scalable FinTech apps on iOS has become more complex than ever. From handling sensitive user data to ensuring compliance and seamless performance, iOS developers face multiple technical challenges. Key areas that usually require deep expertise include: Apple Pay and Wallet integrations Secure authentication (Face ID / Touch ID / biometrics) Real-time transaction processing Core ML for financial predictions SwiftUI dashboards for financial analytics Data encryption and regulatory compliance https://www.nimbleappgenie.com At Nimble AppGenie, we’ve worked extensively as a FinTech app development expert, helping startups and enterprises design and build iOS financial applications that are secure, scalable, and user-centric. Our experience shows that the most successful fintech apps are those that balance strong security architecture with intuitive UX and performance optimization. I’m interested to hear from the community: What are the biggest challenges you’ve faced while building fintech apps on iOS? Are there any recent iOS updates or Apple frameworks that significantly improved your fintech workflows? How are you handling compliance and security in production apps? Looking forward to learning from everyone’s experiences and best practices.

Hello everyone, this is the situation with the iPhone 15 pro, forgot the password code needs to be reset to factory settings, tell me if it is possible to get the media content later that was on the device and there was no backup

Hello everyone, I’m facing a confusing issue in App Store Connect and hoping someone here has encountered this before. Context: • Company developer account (UK-based) • App is free to download • Only optional In-App Purchases (Apple IAP) • No external payments • Using standard App Store distribution • Paid Apps agreement is active • US tax forms (W-8BEN-E) are active Issue: Under Agreements → Tax Forms, I see: United Kingdom Tax Info – Alternative Terms Addendum – Missing Tax Info However: • There is no Alternative Terms Addendum visible under Agreements • I have not intentionally opted into EU DMA Alternative Terms • I do not have a UK VAT number (Apple should be Merchant of Record under standard IAP) Finance Support says they do not support Alternative Terms. Agreements support has not responded yet. Questions: 1. Can the Alternative Terms flag exist only under Tax Forms without a visible agreement? 2. How can a developer revert back to standard App Store terms if this happens? 3. Has anyone had Apple remove this EU DMA backend flag manually? Any guidance or similar experiences would be really appreciated. Thanks in advance

I've worked through Apple's dice demo for SwiftUI, so far so good. I've got a single Die view with a button to "roll" the die. This works perfectly using the code below: struct DieView: View { init(dieType: DieType) { self.dieValue = Int.random(in: 1...dieType.rawValue) self.dieType = dieType } @State private var dieValue: Int @State private var dieType: DieType var body: some View { VStack { if self.dieType == DieType.D6 { Image(systemName: "die.face.\(dieValue)") .resizable() .frame(width: 100, height: 100) .padding() } else {//self.dieType == DieType.D12{ Text("\(self.dieValue)") .font(.largeTitle) } Button("Roll"){ withAnimation{ dieValue = Int.random(in: 1...dieType.rawValue) } } .buttonStyle(.bordered) } Spacer() } } Now I want to do a DiceSetView with an arbitrary number of dice. I've got the UI working with the following; struct DiceSetView: View { @State private var totalScore: Int = 0 var body: some View { ScrollView(.horizontal) { HStack{ DieView(dieType: DieType.D6) DieView(dieType: DieType.D6) DieView(dieType: DieType.D6) } } HStack{ Button("Roll All"){} .buttonStyle(.bordered) Text("Score \(totalScore)") .font(.callout) } Spacer() } } Where I'm struggling is how to get the total of all the dice in a set and to roll all the dice in a set on a button click. I can't iterate through the dice, and just "click" the buttons in the child views from their parents, and I can't think how it should be structured to achieve this (I'm new to this style of programming!) - can anyone point me in the right direction for how to achieve what I want? I realise that I'm probably missing something fundamentally conceptual here....

I'm testing app transferring, before, I have migrate user from teamA to teamB, including subA->transferSub->subB process, now I'm transfer the app from teamB to teamC, after the transfer requested, I can't get transfer_id by /usermigrationinfo api, which response 400 invalid request. the question is I can still get transfer sub by the auth/token api(grant_type: authorization_code) with teamB parameters(teamIdB/clientIdB/appSecretB/redirectUrlB/subB)，but the value is same as first time transfer_id which get during teamA to teamB. when use parameters above with target(teamIdC) to request /usermigrationinfo, invalid request was responsed. im sure that all parameters is correct, dose it cause by teamB still in 60-days first transferring(sure already accepted)?

Currently, I have purchased the Apple Developer Program for 4 days. However, I can not access or hear any news from Apple team that where I was wrong or do my account have any problems.

Hi, our Xcode Cloud runs produce dsyms for test targets that massively increase the artifacts size, more specifically the "Test Products for" zip, that slows down the build due to the "upload artifacts" phase. These dsyms are useless, so we would like to stop producing them on Xcode Cloud builds. Consider that the workflow uses the autogenerated scheme for a package that's part of the Xcode project. How can we tell Xcode Cloud to not produce dsyms?