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unifiedContacts identifier vs contactRelations identifier
The documentation specifies that when Contacts framework returns unified contacts that each fetched unified contact object (CNContact) has its own unique identifier that’s different from any individual contact’s identifier in the set of linked contacts and that when refetching a unified contact, that this identifier should be used. There is also an analogous identifier within the list of contactRelations, but each of these don't seem to corespondent to the unified contacts. For example, is a new contact (Sheryl Zakroff) is created in the simulator Contacts and their spouse is set to Hank Zakroff. However, the GUID created for the contactRelations identifier does not correlate to the original Hank Zakroff GUID and cannot be searched. Is this a bug or what is the indent of the contactRelations identifier? Here's a debug output of walking the unifiedContacts: Name: Hank Zakroff 2E73EE73-C03F-4D5F-B1E8-44E85A70F170 - Other : (555) 766-4823 - Other : (707) 555-1854 Name: David Taylor E94CD15C-796
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Reply to Password AutoFill doesn't work - help needed
Thanks for your post, you mentioned you do not want to provide that information publicly. I suggest you continue this conversation with one of our DTS Engineers privately. If you have a focused sample you can share. To do so, please submit a code-level support request. When you create the request, indicate that you were referred by someone at Apple and make sure to include a link to this thread. Albert Pascual
  Worldwide Developer Relations.
Topic: Privacy & Security SubTopic: General Tags:
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Reply to Pages Not Responding after 26.1 Install
We appreciate your interest in participating in the forums! These forums are for questions about developing software and accessories for Apple platforms. Your question seems related to a consumer feature and is better suited for the Apple Support Communities https://discussions.apple.com/welcome Albert Pascual
  Worldwide Developer Relations.
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Programming Languages Resources
This topic area is about the programming languages themselves, not about any specific API or tool. If you have an API question, go to the top level and look for a subtopic for that API. If you have a question about Apple developer tools, start in the Developer Tools & Services topic. For Swift questions: If your question is about the SwiftUI framework, start in UI Frameworks > SwiftUI. If your question is specific to the Swift Playground app, ask over in Developer Tools & Services > Swift Playground If you’re interested in the Swift open source effort — that includes the evolution of the language, the open source tools and libraries, and Swift on non-Apple platforms — check out Swift Forums If your question is about the Swift language, that’s on topic for Programming Languages > Swift, but you might have more luck asking it in Swift Forums > Using Swift. General: Forums topic: Programming Languages Swift: Forums subtopic: Programming Languages > Swift Forums tags: Swif
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Reply to App Crashes in UICollectionView.m:3974
Thank you for your post. Could you please provide more information? Are you unable to locate a crash file on your device using the sysdiagnose. Additionally, the post does not include the version of iOS or any other relevant details that would allow me to determine the cause of the crash. Could you utilize Xcode to debug the application and reproduce the crash? Providing additional information would be beneficial in guiding you to obtain the crash file. Kindly submit a comprehensive crash report, adhering to the guidelines outlined in Posting a Crash Report. Hope this helps: https://developer.apple.com/forums/thread/688669 Looking forward to figure it out. Albert Pascual
  Worldwide Developer Relations.
Topic: UI Frameworks SubTopic: UIKit Tags:
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The tunnel connection failed while the system tried to connect to the device.
Hello, I’m new to macOS after many years on iPhone, and I’m trying to run a simple app on my iPhone directly from Xcode. The app builds fine in the simulator, but deploying to a real device fails with this error: The tunnel connection failed while the system tried to connect to the device. Domain: com.apple.dt.CoreDeviceError Code: 4 Failure Reason: The tunnel connection failed while the system tried to connect to the device. User Info: { DVTErrorCreationDateKey = 2025-10-02 16:55:53 +0000; com.apple.dt.DVTCoreDevice.operationName = connect; } -- The tunnel connection failed while the system tried to connect to the device. Domain: com.apple.dt.RemotePairingError Code: 4 -- I get the same error via command line, e.g. for xcrun devicectl device info apps --device ... My setup: macOS Version 26.0.1 (Build 25A362) Xcode 26.0.1 (Build 17A400) iPhone 13 on iOS 26.0.1 iPhone is paired with the Mac (I can see it in Finder and in Xcode alongside the simulator). Developer Mode is enabled on the iPhone. I also see my Apple
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Reply to Foundation Models (Detected Content Likely to be Unsafe) Error
Thanks @azamsharp! That is almost definitely a bug with the guardrails. Can you file a Feedback report? In the Playground Canvas, on the far right of the Playground has encountered an error card, you should see a ! icon that will let you directly file a Feedback bug report. To help us track down the issue, would you also be willing to share your Siri language setting? That can be found in the Settings app > Apple Intelligence & Siri > Language. The guardrails have some language-specific behavior, so there's a known issue we're tracking where guardrails are over-triggering for some languages and locales.
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Reply to Questions about using App Extension communication with host apps on iOS 26 (Xcode 26)
[quote='861033022, DTS Engineer, /thread/802846?answerId=861033022#861033022'] I’m still researching the exact details of those limitations [/quote] Hey hey, that went quicker than I expected. As things currently stand on iOS 26, an app can only host extensions that it contains. Needless to say, this significantly undermines the utility of the ExtensionKit. While it’s possible that you might find a creative use for it, there’s one specific situation where it’s super useful, namely, using an extension to host code that is either unreliable or deals with untrusted data. For more on that last point, see Creating enhanced security helper extensions. There’s obviously a lot of demand from third-party developers to broaden the scope of ExtensionKit on iOS. If you have a specific use case in mind, feel free to file an enhancement request with the details. That’s particularly important if your use case is limited in some way. As I mentioned above, we already have an ER for the sort of general support we have on macOS
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Reply to Wifi Aware iOS devices authentication fails after a period of time
I’m not sure what you’re asking for here. Based on your contribution to other threads (like here), I get the feeling that you’re looking for a sample that shows how to communicate between iOS and Android apps. We don’t have such a sample, and it’s not something I’m create for you here on the forums. If you’d like to see that, please do file an enhancement request for it. And post your bug number, just for the record. If I’ve misunderstood your message, I’d appreciate more details on what you’re looking for. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Reply to DeclaredAgeRange import error in Mac Catalyst app
I’m not sure what you’re trying to convey with your latest reply. I’ve already: Explained that this is a bug. Recommend that you file a bug about it. Suggested a workaround that will at least allow your code to build. What else are you looking for? Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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Reply to Potential Structural Swift Concurrency Issue: unsafeForcedSync called from Swift Concurrent context
[quote='860886022, interferon, /thread/802423?answerId=860886022#860886022, /profile/interferon'] I filed FB20484368. [/quote] Thanks. [quote='860886022, interferon, /thread/802423?answerId=860886022#860886022, /profile/interferon'] I was worried it was related to something in my code. [/quote] You are right to be worried here. While the problem isn’t with your code, the issue could affect your code. Lemme explain… Actually, that explanation got way too long so I’ve moved the first part of it here: Waiting for an Async Result in a Synchronous Function You can think of the unsafeForcedSync code as being like the mySynchronous(…) function from that post, except that it checks whether it’s being called from a Swift async function and logs if that’s the case. That log is not just noise: It tells you that you’re potentially exposing yourself to Swift concurrency thread pool exhaustion, and hence to a deadlock. But what you do about it is one of those classic engineering trade-offs. Do you leave it for Apple
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Waiting for an Async Result in a Synchronous Function
This comes up over and over, here on the forums and elsewhere, so I thought I’d post my take on it. If you have questions or comments, start a new thread here on the forums. Put it in the App & System Services > Processes & Concurrency subtopic and tag it with Concurrency. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com Waiting for an Async Result in a Synchronous Function On Apple platforms there is no good way for a synchronous function to wait on the result of an asynchronous function. Lemme say that again, with emphasis… On Apple platforms there is no good way for a synchronous function to wait on the result of an asynchronous function. This post dives into the details of this reality. Prime Offender Imagine you have an asynchronous function and you want to call it from a synchronous function: func someAsynchronous(input: Int, completionHandler: @escaping @Sendable (_ output: Int) -> Void) { … pro
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Testing Live Caller ID Lookup Feature before App Store Release
Hi, We are working to integrate the Live Caller ID Lookup feature into our app. After submitting the request form via the link: https://developer.apple.com/contact/request/live-caller-id-lookup/, we received this reply from Apple: Apple’s OHTTP relay has been configured to talk to your OHTTP gateway. Now Live Caller ID Lookup should work for your application extension when distributed through App Store. However, before officially releasing our app on the App Store, we’d like to make sure the Live Caller ID Lookup feature is working as expected. To test this, we uploaded the app to TestFlight, and it successfully passed App Review. However, the test failed — we observed that the system tries to fetch the config from http://www.example.com/config instead of our actual configuration URL. Questions: Is this expected behavior when using TestFlight? Does the Live Caller ID Lookup feature only become active after full public release on the App Store? Is there any recommended way to test this featur
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Reply to Embed/Do Not Embed & Mach-O type
Ah, I thought might be the case. The simulator works a bit like macOS, where Xcode sets things up so that your app can load a framework from the build products directory. That won’t work on a real device, where the framework must be embedded in the app’s bundle. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = eskimo + 1 + @ + apple.com
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