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Reply to Custom USB Network Device Driver on iPhone
You don’t have a lot of options in this space. [quote='802640021, nam-common, /thread/802640, /profile/nam-common'] we have been informed DriverKit is only available on iPadOS, not iOS. [/quote] That’s correct. [quote='802640021, nam-common, /thread/802640, /profile/nam-common'] First being IOkit [/quote] macOS is the only platform that supports I/O Kit drivers [1]. [quote='802640021, nam-common, /thread/802640, /profile/nam-common'] the second being External Accessory Session (EASession). [/quote] There are two problems here: External Accessory framework can only talk to accessories that are built under the aegis of the MFi programme. If you have an existing accessory that wasn’t built that way, you can’t talk to it with EA. External Accessory framework allows apps to talk to hardware. It doesn’t let you publish a network driver that’s visible to the rest of the system. I think your best option here is to work with your chip vendor to update their firmware to work with iOS’s built-in USB Ethernet driver. Sha
Topic: App & System Services SubTopic: Drivers Tags:
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App Attest – DCAppAttestService.isSupported == false on some devices (~0.23%)
Hi Apple team, For our iPhone app (App Store build), a small subset of devices report DCAppAttestService.isSupported == false, preventing App Attest from being enabled. Approx. impact: 0.23% (352/153,791) iOS observed: Broadly 15.x–18.7 (also saw a few anomalous entries ios/26.0, likely client logging noise) Device models: Multiple generations (iPhone8–iPhone17); a few iPad7 entries present although the app targets iPhone Questions In iPhone main app context, what conditions can make isSupported return false on iOS 14+? Are there known device/iOS cases where temporary false can occur (SEP/TrustChain related)? Any recommended remediation (e.g., DFU restore)? Could you share logging guidance (Console.app subsystem/keywords) to investigate such cases? What fallback policy do you recommend when isSupported == false (e.g., SE-backed signature + DeviceCheck + risk rules), and any limitations? We can provide sysdiagnose/Console logs and more case details upon request. Thank you, —
Topic: Privacy & Security SubTopic: General Tags:
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Reply to XCode 26.0.1/iOS 26 unable to mark class as ObservableObject
Just so we’re clear, ObservableObject isn’t part of Observation but part of Combine. I tried this out here in my office: Using Xcode 26.0.1, I created a new project from the macOS > Command Line Tool template. I changed main.swift to this code: import Combine class XYZ: ObservableObject { } I chose Product > Build and it compiled just fine. I’m not sure what’s going on in your case but it’s clearly context dependent. My advice is that you repeat the above steps to see if you can get the basics working. After that you can then explore why your original project is behaving differently from this test project. [quote='802686021, Gatti, /thread/802686, /profile/Gatti'] after updating to 26.0.1 [/quote] Upgrading from what? Xcode 26.0? Or Xcode 16.4? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
Topic: App & System Services SubTopic: Processes & Concurrency Tags:
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Issues with Promotional Offers — Purchase Fails or Discount Not Applied
I am developing and testing Apple Promotional Offers and encountered issues during implementation. Purchase Failure When using the following API, the promotional purchase sheet is displayed, but after attempting payment, the transaction fails. API: public static func promotionalOffer( offerID: String, keyID: String, nonce: UUID, signature: Data, timestamp: Int ) -> Product.PurchaseOption Observed behavior: Alert shows: Unable to Purchase [Environment: Xcode] Not Eligible for Offer Console logs: AMSErrorDomain Code=305 ASDErrorDomain Code=3903 Discount Not Applied When calling this API, there are no errors, but the promotional price is not applied, and the user still sees the original price. API: public static func promotionalOffer( _ offerID: String, compactJWS: String ) -> [Product.PurchaseOption] Questions Does Promotional Offers support testing with .storekit files in Xcode? Can Promotional Offers be tested with sandbox accounts using real offers configured in App Store Connect? How should I
Topic: App & System Services SubTopic: StoreKit Tags:
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Ventura Hack for FireWire Core Audio Support on Supported MacBook Pro and others...
Hi all, Apple dropping on-going development for FireWire devices that were supported with the Core Audio driver standard is a catastrophe for a lot of struggling musicians who need to both keep up to date on security updates that come with new OS releases, and continue to utilise their hard earned investments in very expensive and still pristine audio devices that have been reduced to e-waste by Apple's seemingly tone-deaf ignorance in the cries for on-going support. I have one of said audio devices, and I'd like to keep using it while keeping my 2019 Intel Mac Book Pro up to date with the latest security updates and OS features. Probably not the first time you gurus have had someone make the logical leap leading to a request for something like this, but I was wondering if it might be somehow possible of shoe-horning the code used in previous versions of Mac OS that allowed the Mac to speak with the audio features of such devices to run inside the Ventura version of the OS. Would it possible
Topic: Media Technologies SubTopic: General Tags:
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Limit on consecutive push notifications (normal and critical alerts)
Hi, We have a use case where our app needs to send repeated push notifications (both normal and critical alerts) to inform the user about a critical device state and grab their attention. Since iOS doesn’t allow us to schedule local notifications beyond 30 seconds, I need to send multiple pushes from the server side. My questions are: Is there any documented limit on how many push notifications can be sent back-to-back before Apple starts throttling or restricting them? Are critical alerts treated differently from normal notifications in terms of delivery restrictions or frequency limits? Is there a recommended approach for handling scenarios where repeated urgent notifications are necessary to keep the user informed? I want to make sure I’m following Apple’s guidelines and not risking rejection during review.
Topic: App & System Services SubTopic: Notifications Tags:
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Reply to Safe areas ignored after navigating a WebView/WebPage back in a NavigationStack
Are you able to reproduce this problem using the following sample? https://github.com/WebKit/WebKit/blob/cb619a3e3f54e69f1b46d36645b46606f9d12c9c/Tools/SwiftBrowser/Source/Views/ContentView.swift#L29 If you are then our engineering teams need to investigate this issue, as resolution may involve changes to Apple's software. Please file a bug report, include a small Xcode project and some directions that can be used to reproduce the problem, and post the Feedback number here once you do. If you post the Feedback number here I'll check the status next time I do a sweep of forums posts where I've suggested bug reports. If you're not familiar with how to file enhancement requests, take a look at Bug Reporting: How and Why?
Topic: Safari & Web SubTopic: General Tags:
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Keyboard Toolbar Padding iOS26
When I create a SwiftUI toolbar item with placement of .keyboard on iOS 26, the item appears directly on top of and in contact with the keyboard. This does not look good visually nor does it match the behavior seen in Apple's apps, such as Reminders. Adding padding to the contents of the toolbar item only expands the size of the item but does not separate the capsule background of the item from the keyboard. How can I add vertical padding or spacing to separate the toolbar item capsule from the keyboard?
Topic: UI Frameworks SubTopic: SwiftUI
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Reply to How to turn off background extension effect in UISplitViewController?
@DTS Engineer What's the point of filing a bug report? Will it actually get fixed? I'm asking a serious question because I've already filed several iOS/iPadOS 26 bug reports related to UISplitViewController and UIKit. Several were reported against beta 1. Those bug reports include trivial sample apps and step-by-step instructions demonstrating the issue. None have been fixed as of iOS/iPadOS 26.0 GM. I also have several outstanding bug reports for broken functionality about UISearchController/UISearchBar under iOS/iPadOS 26. Again, several since beta 1. All include trivial test apps that demonstrate the issue. Again, none have been fixed. All of these outstanding issues are impacting my app. I'm very frustrated and disappointed. I'm sorry but I no longer have the ambition to file more bug reports that will never be fixed. I truly hope Apple gets back to the days of it just works. That era seems to be lost at the moment. Every year iOS and others are updated with lots of new features and lots of new b
Topic: UI Frameworks SubTopic: UIKit Tags:
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Reply to Metal fails to create PSO on AMD based GPUs
Hello, Pre documentation Metal libraries built using Metal shader converter tools require a device that supports Argument Buffers Tier 2, running macOS 14 Sonoma, iOS 17 or later. If you build a Metal library for earlier OS versions, not all features will be supported. AMD GPUs lack many of the features offered by Apple Silicon and consequently PSOs won't compile (irrespective of Metal Shader Converter). Check the Metal Feature Set Tables for details.
Topic: Graphics & Games SubTopic: Metal Tags:
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