[FB22327481] We are observing a rare issue where alarms scheduled using AlarmKit occasionally fire exactly at 12:00 AM, even though the alarm was scheduled for a different time. This issue happens only for a very small number of users (for example, 1–2 users per several thousand per day), but multiple reports confirm that the alarm goes off exactly at midnight. We also found that other developers are experiencing the same issue: https://developer.apple.com/forums/thread/815714 Observed behavior For a small number of users: Alarm fires at exactly 00:00 (midnight) This happens even when the scheduled alarm time is something like 7:30 AM Happens rarely Hard to reproduce internally Appears to happen only on real devices in production Additional notes We are using AlarmKit fixed schedules (not relative) Dates passed to AlarmKit are correct at scheduling time We do not intentionally create midnight alarms Issue seems random Question Are there any known limitations or edge cases with AlarmKit fixed schedules that could cause alarms to fire at midnight? For example: Invalid date fallback? Schedule expiration fallback? Time zone changes? Background refresh timing? Maximum schedule window? Any guidance would be appreciated, as this is affecting real users but is difficult to reproduce.

I am working on a cross-platform application where, on Android and Windows, I explicitly load dynamic libraries at runtime (e.g., LoadLibrary/GetProcAddress on Windows and equivalent mechanisms on Android). This allows me to control when and how modules are loaded, and to transfer execution flow from the main executable into the dynamically loaded library. I want to follow a similar approach on macOS (and also iOS) and explicitly load a framework (instead of relying on implicit linking via import). From my exploration so far, I have come across the following options: Using Bundle (NSBundle) - Load framework using: let bundle = Bundle(path: path) try bundle?.load() Access functionality via NSPrincipalClass and @objc methods (class-based entry) Using dlopen + dlsym Load the framework binary and resolve symbols: let handle = dlopen(path, RTLD_NOW) let sym = dlsym(handle, "EntryPoint") Expose Swift functions using @_cdecl Using a hybrid approach (Bundle + dlsym) - Use Bundle for loading and dlsym for symbol access From what I understand: Bundle works well for class-based/plugin-style designs using the Objective-C runtime while dlopen/dlsym works at the symbol level and is closer to what I am doing on other platforms However, my requirement is specifically: Explicit runtime loading (not compile-time linking) Ability to transfer execution flow from the main executable into the dynamically loaded framework **What is the recommended approach on macOS for this kind of explicit dynamic loading, or is implicit loading the way to go? Also, would it differ for interactive and non-interactive apps? ** In what scenarios would Apple recommend using Bundle instead of dlopen? Is there any other methods best for this explicit loading of frameworks on Apple?

I am getting bug reports from users that occasionally the AlarmKit alarms scheduled by my app are going off exactly at midnight. In my app, users can set recurring alarms for sunrise/sunset etc. I implement this as fixed schedule alarms over the next 2-3 days with correct dates pre-computed at schedule time. I have a background task which is scheduled to run at noon every day to update the alarms for the next 2-3 days. Are there any limitations to the fixed schedule which might be causing this unintended behavior of going off at midnight?

My project uses the UINavigationController's largeTitle on the latest iOS 26.1, but I found that when I set the backgroundColor, the navigation bar's largeTitle disappeared after switching between normal and large titles. I checked the latest documentation and consulted AI, but I have not found any good solutions. For the demo project, please refer to FB20986869

I work on an SDK, and one of the ways we distribute it is as a pre-compiled static XCFramework. As far as I know, it’s the nature of a static framework to not contain symbols since the framework will be embedded in the final app binary, and the symbols should then be generated. However, when testing the "Validate" function of the Xcode 16 deployment process, our users are receiving a warning that says the framework does not contain symbols. Is my assumption about static frameworks and symbols incorrect? Could this be a bug in Xcode 16? Should we modify something in our framework to inform Xcode that symbols are not needed?

Problem: When the screen is locked, an incoming call does not initiate the launch of the Flutter application required for audio and video communication through Jitsi Meet. In the unlocked state, the application functions correctly. The current implementation does not have a mechanism for activating the Flutter engine when receiving a call via CallKit while the screen is locked. Although CallKit UI displays the call acceptance interface and the audio session is configured, the Flutter application remains in a suspended state, making it impossible to connect to the media server. Audio session activated using didActivateAudioSession method.

I'm following the steps laid out in Creating a static framework which states: When a client links and embeds the framework, Xcode 15 or later omits the main binary from the embedded framework bundle because it’s already statically linked into the client. Specifically, I'm adding a new framework target to my project, and then changing the Mach-O type in its build settings to Static Library. What I'm observing when I build (debug or release) is that that the resulting framework folder inside of the app bundle still contains a binary. Furthermore, upon inspecting strings and symbols in both the main app executable and this library binary, it appears that my strings and symbols do end up in the main executable and not in the library binary. Does this mean that this binary is just a stub left behind? Is this intended? Can I safely delete this binary with a build phase script?

I have a question regarding the behavior of AVAudioSession.sharedInstance().outputVolume. Observed behavior: When the app is in the foreground, I read audioSession.outputVolume (for example, 0.1). The app is then moved to the background. While the app is in the background, the user changes the system volume using the hardware buttons (for example, to 0.5). When the app returns to the foreground, audioSession.outputVolume still reports the previous value (0.1). From my testing, outputVolume only seems to update when the system volume is changed while the app is in the foreground. Volume changes made while the app is in the background are not reflected when the app returns to the foreground. Questions: According to Apple’s documentation for AVAudioSession.outputVolume: “The systemwide output volume set by the user.” https://developer.apple.com/documentation/avfaudio/avaudiosession/outputvolume However, based on our testing on iOS 18.6.2 and iOS 18.1, the observed behavior seems to differ from this description. Questions: The documentation states that outputVolume represents the system-wide volume set by the user. In our testing, the value does not reflect volume changes made while the app is in the background and only updates when the app is in the foreground.Is this the expected behavior of AVAudioSession.outputVolume? Is there any other recommended way in Swift to retrieve the current system volume that reflects user changes made both while the app is in the foreground and while it is in the background? Any clarification on the intended behavior or recommended handling would be greatly appreciated.

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-7964-4A9B-8AC4-10D7CFB791FD - Other : 555-610-6679 Name: Sheryl Zakroff DE783BC8-7917-4138-93F6-3AF0FD4CE083 - Other : (707) 555-1854 - Spouse: <CNContactRelation: 0x60000000dd60: name=Hank M. Zakroff> - 534B467D-CA00-46D3-897C-16EEA782C9CF - Looking for ["534B467D-CA00-46D3-897C-16EEA782C9CF"] []

Hi all, I’m facing a device-specific issue in a live production iOS app distributed privately via the App Store . The app crashes immediately after login on one client’s iPhone, while the same account works fine on other devices. There’s no crash log generated in Analytics, and the app just pops to the home screen. Environment: App: Production app on App Store iOS version: 26.3 Devices: Only one device exhibits the crash; other iPhones work fine Login flow: App calls an API and writes the response to a local SQLite database immediately after login Distribution: App Store (Privately). The user is install via the redemption codes. Observations: All users on the problematic device crash immediately after login. The crash does not occur on any other devices, including the same iOS version. The client had already uninstalled and reinstalled the app via App Store cloud download, but the crash persisted. No crash log appears in Analytics or Xcode (process just terminates). Device restart had not been attempted before reinstall. App does not use Keychain tokens; local DB is only SQLite in the app sandbox. Hypotheses so far: Corrupted binary or cached app installation on that device SQLite database corruption or write failure Device-specific OS/environment issue (temp files, file locks, provisioning) iOS watchdog silently terminating the app during post-login DB write Language / region differences unlikely Questions: Is it possible for a device to retain a corrupted app binary or cached installation even after uninstall + cloud download reinstall from the App Store? Can uninstalling, restarting the device, and reinstalling guarantee a fresh binary and sandbox? Are there any known iOS behaviors where a local SQLite write could trigger an instant crash on one device only, without generating crash logs? Any other suggestions for diagnosing this device-specific post-login crash in a live production environment? Thanks in advance for any guidance — this issue is affecting a client’s live usage, and we’d like to understand the root cause and best way to resolve it safely.

During Apple Pay in-app provisioning (EV_ECC_v2), our iOS app successfully obtains the issuer provisioning certificates and generates cryptographic material. The flow fails when Apple posts the card blob to Apple’s broker (card creation step), returning HTTP 500 from .../broker/v4/devices/{SEID}/cards. Steps: Call issuerProvisioningCertificates?encryptionVersion=EV_ECC_v2 → 200 OK; returns ECC leaf + Apple Root CA chain; nonce=2a831be4. 2. Build {encryptedCardData, activationData, ephemeralPublicKey} 3. POST /broker/v4/devices/{SEID}/cards Expected: 200 OK on /broker/v4/devices/{SEID}/cards, or 5xx with a descriptive error if payload/cryptography is invalid. Observed: 500 Internal Server Error from Apple broker on /cards (labeled “eligibility” in PassKit logs), causing a terminal failure in Wallet UI.

We use Jamf Blueprint to deploy the managed app and identity to the iOS device (iOS 26.3 installed). Our managed app can access the identity via let identityProvider = ManagedAppIdentitiesProvider() let identity: SecIdentity do { identity = try await identityProvider.identity(withIdentifier: "myIdentity") } catch { } However, the app extension cannot access the same identity. Our app extension is notification extension that implemented UNNotificationServiceExtension APIs. We use above code in didReceive() function to access identity that always failed. The MDM configuration payload is: "AppConfig": { "Identities": [ { "Identifier": "myIdentity", "AssetReference": "$PAYLOAD_2" } ] }, "ExtensionConfigs": { "Identifier (com.example.myapp.extension)": { "Identities": [ { "Identifier": "myIdentity", "AssetReference": "$PAYLOAD_2" } ] } }, "ManifestURL": "https://example.net/manifest.plist", "InstallBehavior": { "Install": "Required" } } Is there any problem in our MDM configuration? Or the notification extension cannot integrate with ManagedApp FM?

Hi, I have a question regarding the Swift Student Challenge submission requirements. I’m planning to use the glassEffect API introduced in iOS 26 and build my .swiftpm app to support iOS 26 only. Is it acceptable to submit a project that runs exclusively on iOS 26? Currently, I am developing and building the project in Xcode. However, it seems that the current Swift Playgrounds app does not provide a preview or runtime environment for iOS 26 yet. I would like to confirm whether this could cause any issues during the review process, especially if reviewers are using Swift Playgrounds for evaluation. Thank you for your clarification.

I'm building a macOS app that uses WKWebView for text editing (not NSTextView). I need to provide grammar checking by calling NSSpellChecker programmatically and sending results back to the web editor. The problem: TextEdit (which uses NSTextView) catches grammar errors like "Can I has pie?" and "These are have" — but when I call NSSpellChecker's APIs directly, those same errors are never flagged. I've tried both APIs: 1. The unified check() API: let results = checker.check( text, range: range, types: NSTextCheckingAllTypes, options: [:], inSpellDocumentWithTag: tag, orthography: &orthography, wordCount: &wordCount) This returns only .orthography results (language detection). No .spelling, no .grammar — just orthography. 2. The dedicated checkGrammar(of:startingAt:...) API: let sentenceRange = checker.checkGrammar( of: text, startingAt: offset, language: nil, wrap: false, inSpellDocumentWithTag: tag, details: &details) This catches sentence fragments ("The.", "No.") and some agreement errors ("The is anyone.") but misses "Can I has pie?", "These are have", "This will be happened", and other subject-verb agreement errors that TextEdit highlights. What I've confirmed: "Check Grammar With Spelling" is enabled in System Settings TextEdit reliably catches all these errors with green underlines Both APIs are called with a valid spellDocumentTag from uniqueSpellDocumentTag() The text is passed as plain strings (no attributed string context) My question: How does NSTextView's grammar checking work internally? It must be using something beyond these two public APIs. Possibilities I'm considering: Does NSTextView use the NSTextCheckingClient protocol / requestChecking(of:range:types:options:) for asynchronous checking that produces different results? Does NSTextView provide additional context (attributed string, layout info) that improves grammar detection? Is there a private/undocumented API or framework that NSTextView uses for deeper grammar analysis? Any insight from anyone who has implemented programmatic grammar checking on macOS would be appreciated. NOTE: This post was composed with the help of Claude Code, which I am using to help write a word-processing application, but I am frustrated because Claude Code wants to give up and switch to a 3rd party grammar checker, like LanguageTool, and it seems to me that it should be possible to use native Apple tools to achieve this goal without requiring the user to send their data elsewhere for checking. I've spent a lot of time searching the web for answers and have found surprisingly little on this. Any pointers people might have would be very much appreciated! Thanks.

Hello, I want to use the Speech framework in my app. However, I found that if I want it to work offline, it must be downloaded separately on the device. Do I understand correctly that it is not allowed to use it in a Swift Student Challenge submission if English (as the speech language) must be downloaded by the tester on their device using the internet beforehand?

On iOS 26.01 & 26.2, the system keyboard shows uneven horizontal padding: Leftmost key column touches the screen edge Right side has visible padding This behavior is reproducible: In existing apps In a brand-new demo app In both UIKit and SwiftUI Xcode: 26.0.1 & 26.2 iOS: 26.0.1 & 26.2 Simulator Devices tested: iPhone 15 / iPhone 15 Pro Keyboard types: .numberPad, .decimalPad Frameworks: UIKit, SwiftUI

I downloaded package, I can see it in Package Dependencies tab, [swift-collections | https://github.com/apple/swift-collections.git | Up to Next Major Version] — looks OK. But (quite strange): import Collections //🛑 No such module 'Collections' typealias Objects = OrderedSet<anyHashable> // No error I took Collection word from a list or typed — no difference. if I remove import Collections there is no OrderedSet anymore (of course) Can't compile. Cleaned build folder, restarted Xcode... What could be wrong with it? Any ideas?

Hey there, I’m wondering if there is a CRUD API for Apple Notes? I just saw once that it’s possible through a Apple Script on Mac. But the problem for me is that the app should also run on iOS. Does someone have an idea how to approach this?

I'm a font developer. In the development process, I will revise a font and overwrite the OTF file that is currently enabled (registered) with macOS. If I then launch an app, it will immediately use the revised version of the font; while apps that are already loaded will continue to use the old version. This suggests that each app is loading new and separate font data, rather than getting it from some existing cache in memory. Yet macOS does have a "font cache" of some sort. Some apps, like TextEdit, seem to only load the fonts that they need to use. However, other apps, like Pages, load every enabled (registered) font on the OS!! (According to the Open Files list in Activity Monitor.) Given that /System/Library/Fonts/ is 625 Mb, and we can't disable any of it, isn't that a lot of data to be repeating? How many fonts is too many fonts? I can't find much documentation about the process.

Is there any information for developer about notification forwarding which is published in iOS 26.3? how to use it ?