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New push notifications for widgets seem too limited for actual production-level apps
I was very excited to see the addition of push notifications for widgets. However upon further inspection, the way it is implemented seems too limiting for real life apps. I have an app for time tracking with my own backend. The app syncs with my backend in the main executable (main target). My widgets are more lightweight as they only access data in the shared app container, but they don't perform sync with the server directly to avoid race conditions with the main app. I was under the impression that the general direction of the platform is to be doing most things in the main app target (also App Intents work that way for the most part), so the fact that the WidgetPushHandler just calls the widget's method to reload the timeline is very unfortunate. In an ideal scenario I also need the main app to be 'woken up' to perform the sync with the server, and once that's done I'd update the widget's timeline and where I would just read data from the shared app container. So, my questions are: What is the recommended way of updating the widgets when this push notification arrives in the case that the main app target needs to perform the sync first? Is there any way how to detect that the method func timeline(for configuration: InteractiveTrackingWidgetConfigurationAppIntent, in context: Context) was called as a result of the push notification being received? Can I somehow schedule a background task from the widget's reloadTimeline() function? How can I get the push token later, in case that I don't save it right away the first time the WidgetPushHandler's pushTokenDidChange() is called? Thank you for your work on this and hopefully for your answers. FB19356256
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Jan ’26
Incompatibility with Android devices and Wifi Aware standard
There is no available API that allows you to connect to Android. The current APIs that are provided are not compatible outside of the Apple Ecosystem. For example, Android requires you to set a service name and a password where iOS sets a service and a PIN authentication strategy in a specific format that’s not compatible. It looks like the implementation is not following the Wifi Aware Specifications. To enable cross platform interoperability while providing security, could you adopt the same strategy as with Bluetooth and enable iOS users to enable the sharing and subscription of services with Everyone.
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Oct ’25
Using wildcard for applinks in iOS stopped working
Hi everyone, I've been working on an application that provides different subdomains for different customers, so we need to support app linking with all of them. However, using wildcard notation like applinks:*.domain.com doesn't work, while hardcoding applinks:subdomain.domain.com works fine. The association file is being served from both the main domain and subdomains. It used to work fine about a month ago, and I can't find any recent breaking changes on Apple's side . Any ideas why this could happen. ?
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SKAdNetwork: Error while updating conversion value
Hello! I make use of the new iOS 15.4 SKAdNetwork.updatePostbackConversionValue feature: SKAdNetwork.updatePostbackConversionValue(0) { error in                 if let error = error {                     print(error.localizedDescription)                 }             } I am not sure why, but I always see this error message in the console: SKAdNetwork: Error while updating conversion value: Error Domain=SKANErrorDomain Code=10 "(null)" The operation couldn’t be completed. (SKANErrorDomain error 10.) Any idea what’s going on there? What does Error Code 10 mean? Couldn't find anything in the documentation about that so far. I have the NSAdvertisingAttributionReportEndpoint key with domain (https://api2.branch.io/v1/skadnetwork/advertiser_app) in my .plist.
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May ’25
Are read-only filesystems currently supported by FSKit?
I'm writing a read-only filesystem extension. I see that the documentation for loadResource(resource:options:replyHandler:) claims that the --rdonly option is supported, which suggests that this should be possible. However, I have never seen this option provided to my filesystem extension, even if I return usableButLimited as a probe result (where it doesn't mount at all - FB19241327) or pass the -r or -o rdonly options to the mount(8) command. Instead I see those options on the volume's activate call. But other than saving that "readonly" state (which, in my case, is always the case) and then throwing on all write-related calls I'm not sure how to actually mark the filesystem as "read-only." Without such an indicator, the user is still offered the option to do things like trash items in Finder (although of course those operations do not succeed since I throw an EROFS error in the relevant calls). It also seems like the FSKit extensions that come with the system handle read-only strangely as well. For example, for a FAT32 filesystem, if I mount it like mount -r -F -t msdos /dev/disk15s1 /tmp/mnt Then it acts... weirdly. For example, Finder doesn't know that the volume is read-only, and lets me do some operations like making new folders, although they never actually get written to disk. Writing may or may not lead to errors and/or the change just disappearing immediately (or later), which is pretty much what I'm seeing in my own filesystem extension. If I remove the -F option (thus using the kernel extension version of msdos), this doesn't happen. Are read-only filesystems currently supported by FSKit? The fact that extensions like Apple's own msdos also seem to act weirdly makes me think this is just a current FSKit limitation, although maybe I'm missing something. It's not necessarily a hard blocker given that I can prevent writes from happening in my FSKit module code (or, in my case, just not implement such features at all), but it does make for a strange experience. (I reported this as FB21068845, although I'm mostly asking here because I'm not 100% sure this is not just me missing something.)
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iOS Background Execution Limits
I regularly see questions, both here on the Apple Developer Forums and in my Day Job™ at DTS, that are caused by a fundamental misunderstanding of how background execution works on iOS. These come in many different variants, for example: How do I keep my app running continuously in the background? If I schedule a timer, how do I get it to fire when the screen is locked? How do I run code in the background every 15 minutes? How do I set up a network server that runs in the background? How can my app provide an IPC service to another one of my apps while it’s in the background? How can I resume my app in the background if it’s been ‘force quit’ by the user? The short answer to all of these is You can’t. iOS puts strict limits on background execution. Its default behaviour is to suspend your app shortly after the user has moved it to the background; this suspension prevents the process from running any code. There’s no general-purpose mechanism for: Running code continuously in the background Running code at some specific time in the background Running code periodically at a guaranteed interval Resuming in the background in response to a network or IPC request [1] However, iOS does provide a wide range of special-purpose mechanisms for accomplishing specific user goals. For example: If you’re building a music player, use the audio background mode to continue playing after the user has moved your app to the background. If you’re building a timer app, check out the AlarmKit framework. On older systems, use a local notification to notify the user when your timer has expired. If you’re building a video player app, use AVFoundation’s download support. Keep in mind that the above is just a short list of examples. There are many other special-purpose background execution mechanisms, so you should search the documentation for something appropriate to your needs. IMPORTANT Each of these mechanisms fulfils a specific purpose. Do not attempt to use them for some other purpose. Before using a background API, read clause 2.5.4 of the App Review Guidelines. Additionally, iOS provides some general-purpose mechanisms for background execution: To resume your app in the background in response to an event on your server, use a background notification (aka a ‘silent’ push). For more information, see Pushing background updates to your App. To request a small amount of background execution time to refresh your UI, use the BGAppRefreshTaskRequest class. To request extended background execution time, typically delivered overnight when the user is asleep, use the BGProcessingTaskRequest class. To continue user-visible work after the user has left your app, use the BGContinuedProcessingTask class. To prevent your app from being suspended for a short period of time so that you can complete some user task, use a UIApplication background task. For more information on this, see UIApplication Background Task Notes. To download or upload a large HTTP resource, use an URLSession background session. All of these mechanisms prevent you from abusing them to run arbitrary code in the background. As an example, consider the URLSession resume rate limiter. For more information about these limitations, and background execution in general, I strongly recommend that you watch WWDC 2020 Session 10063 Background execution demystified [2]. It’s an excellent resource. Specifically, this talk addresses a common misconception about the app refresh mechanism (BGAppRefreshTaskRequest and the older background fetch API). Folks assume that app refresh will provide regular background execution time. That’s not the case. The system applies a range of heuristics to decide which apps get app refresh time and when. This is a complex issue, one that I’m not going to try to summarise here, but the take-home message is that, if you expect that the app refresh mechanism will grant you background execution time, say, every 15 minutes, you’ll be disappointed. In fact, there are common scenarios where it won’t grant you any background execution time at all! Watch the talk for the details. [1] iOS 26 introduced support for general-purpose IPC, in the form of enhanced security helper extensions. However, these can only be invoked by the container app, and that means there’s no background execution benefit. [2] Sadly the video is currently not available from Apple. I’ve left the link in place just in case it comes back. When the user ‘force quits’ an app by swiping up in the multitasking UI, iOS interprets that to mean that the user doesn’t want the app running at all. So: If the app is running, iOS terminates it. iOS also sets a flag that prevents the app from being launched in the background. That flag gets cleared when the user next launches the app manually. This gesture is a clear statement of user intent; there’s no documented way for your app to override the user’s choice. Note In some circumstances iOS will not honour this flag. The exact cases where this happens are not documented and have changed over time. Finally, if you have questions about background execution that aren’t covered by the resources listed here, please open a new thread on the forums with the details. Put it in a reasonable subtopic and tag it appropriately for the technology you’re using; if nothing specific springs to mind, use Background Tasks. Also, make sure to include details about the specific problem you’re trying to solve because, when it comes to background execution, the devil really is in the details. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com" Change history: 2026-01-09 Added a reference to AlarmKit. Added a reference to BGContinuedProcessingTask. Add a footnote about IPC and another one about WWDC 2020 Session 10063. Made other minor editorial changes. 2024-03-21 Added a discussion of ‘force quit’. 2023-05-11 Added a paragraph that explains a common misconception about the app refresh mechanism. Made other minor editorial changes. 2021-08-12 Added more entries to the common questions list, this time related to networking and IPC. Made minor editorial changes. 2021-07-26 Extended the statement about what’s not possible to include “running code periodically at a guaranteed interval”. 2021-07-22 First posted.
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Jan ’26
iOS 26 didRegisterForRemoteNotificationsWithDeviceToken is not being called
We have an app in Swift that uses push notifications. It has a deployment target of iOS 15.0 I originally audited our app for iOS 26 by building it with Xcode 26 beta 3. At that point, all was well. Our implementation of application:didRegisterForRemoteNotificationsWithDeviceToken was called. But when rebuilding the app with beta 4, 5 and now 6, that function is no longer being called. I created a simple test case by creating a default iOS app project, then performing these additional steps: Set bundle ID to our app's ID Add the Push Notifications capability Add in application:didRegisterForRemoteNotificationsWithDeviceToken: with a print("HERE") just to set a breakpoint. Added the following code inside application:didFinishLaunchingWithOptions: along with setting a breakpoint on the registerForRemoteNotifications line: UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .alert, .sound]) { granted, _ in DispatchQueue.main.async { UIApplication.shared.registerForRemoteNotifications() } } Building and running with Xcode 26 beta 6 (17A5305f) generates these two different outcomes based upon the OS running in the Simulator: iPhone 16 Pro simulator running iOS 18.4 - both breakpoints are reached iPhone 16 Pro simulator running iOS 26 - only the breakpoint on UIApplication.shared.registerForRemoteNotifications is reached. Assuming this is a bug in iOS 26. Or, is there something additional we now need to do to get push notifications working?
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Jan ’26
StoreKit Configuration Not Syncing to Xcode
Hello! I am attempting to add Subscriptions to an App that Is already published on the App Store. I cannot get Xcode to actually sync what is in my App Store Connect. When adding the Storekit configuration file, I go through the automatic linking process and select the proper bundleID. The configuration file says 'Synced @ [CurrentTime]' however there are no subscriptions listed in there. I have attempted deleting the file several times, creating a new subscription group. With no success. Do I need to publish the subscriptions without the features first? Upon attempting to write the supporting code that will enable these features within the app, I cannot get Xcode to identify that I have these subscriptions. I have also tried pushing these to TestFlight, still with no success. Thank you.
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Inquiry Regarding the Scope of DeclaredAgeRange Acquisition​
We are integrating Apple’s DeclaredAgeRange SDK. To comply with relevant regulatory requirements, our understanding is as follows: The app is only required to obtain the declared age range for users located in Texas. For users outside of Texas, we should not proactively request age range information. Accordingly, we would like to confirm the following: Are we required to present the age range request prompt to all users in the United States? If yes, we are concerned that this may significantly impact the overall user experience. If it is permissible to request age range only for Texas users, how can we reliably determine whether a user is located in Texas on the client side? For example, does Apple provide an API or recommended method for accurately identifying a user’s region (specifically Texas)?
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Jan ’26
JWT Token Errors
I have an app using weatherkit and its currently live and up on the app store, recently I had some users report to me that they had been receiving errors loading weather data, I had error handling built in and it reported an issue with apples authentication server Failed to generate jwt token for: com.apple.weatherkit.authservice with error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" I have not come across this during the development lifecycle of my project, there where no codebase changes, it just stopped functioning. The app entitlements are valid and correct, Weatherkit is enabled in both xcode and across my Certs, identifiers and profiles. I was not experiencing this issue until I reinstalled the app from the app store completly by first removing it and then re-installing fresh. Hard reboots do not help and I do not want to start suggesting to my users to factory reset their devices. We are using WeatherKit in both our main app and widget, relying entirely on Apple’s framework for authentication and token management. We do not generate or inject our own JWT tokens; all token handling is managed by WeatherKit. We have implemented a debug menu with the following actions: Clear WeatherKit JWT tokens from the keychain Clear all related UserDefaults key Clear all app group data and all UserDefaults. Perform a “nuclear” cache clear (removes all app data, keychain, and cached files). We log all WeatherKit fetch attempts and failures, including authentication errors, both in the app and widget and get nothing but code 2. We have attempted all of the above steps, but continue to experience issues with WeatherKit JWT authentication We would appreciate any guidance or insight into what else could be causing persistent WeatherKit JWT/authentication issues, or if there are any additional steps we should try. P.S. - Tested and experiencing the same issues on an iPhone 15 Pro Max and iPhone 15 The Pro Max is on the iOS 26 Beta // and the 15 is on the latest iOS 18
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Jun ’25
AppStore.sync() not restoring purchases
On an app that was using the old API for In-App Purchases (StoreKit 1). The app is already published on the App Store. The purchase is non-consumable. While trying to migrate to StoreKit 2, I'm unable to restore purchases. Specifically displaying and purchasing products works as expected, but when deleting and reinstalling the app, and then trying to restore purchases I can't do it. I'm trying to restore them using the new APIs but it doesn't seem to be working. What I have tried so far: I'm listening for transaction updates during the whole lifetime of the app, with: Task.detached { for await result in Transaction.updates { if case let .verified(safe) = result { } } } I have a button that calls this method, but other than prompting to log in again with the Apple ID it doesn't seem to have any effect at all: try? await AppStore.sync() This doesn't return any item for await result in Transaction.currentEntitlements { if case let .verified(transaction) = result { } } This doesn't return any item for await result in Transaction.all { if case let .verified(transaction) = result { } } As mentioned before I'm trying this after purchasing the item and deleting the app. So I'm sure it should be able to restore the purchase. Am trying this both with a Configuration.storekit file on the simulator, and without it on a real device, in the Sandbox Environment. Has anyone being able to restore purchases using StoreKit 2? PD: I already filed a feedback report on Feedback Assistant, but so far the only thing that they have replied is: Because StoreKit Testing in Xcode is a local environment, and the data is tied to the app, when you delete the app you're also deleting all the transaction data for that app in the Xcode environment. The code snippets provided are correct usage of the API. So yes, using a Configuration.storekit file won't work on restoring purchases, but if I can't restore them on the Sandbox Environment I'm afraid that this won't work once released, leaving my users totally unable to restore what they have already purchased.
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Get update token from the OS when the Live Activity is started from the backend, without the user explicitly providing "Allow" or "Always Allow" consent from the lock screen
We are currently using Live Activities in our app and supporting both of the following use cases: Starting a Live Activity directly from the app using ActivityKit APIs. Starting a Live Activity from the backend using the start token. In the first case (initiated from the app), the OS generates an update token, and we are able to continuously update the Live Activity via our backend—even if the user has not explicitly provided "Allow" or "Always Allow" consent from the lock screen. This works as expected. In the second case (initiated from the backend), if the user does provide consent ("Allow" or "Always Allow") from the lock screen, we receive the update token and can continue updating the Live Activity. However, if the user does not provide consent, the OS does not provide the update token, and we are unable to send further updates. Question: Is it possible to receive the update token from the OS when the Live Activity is started from the backend, without the user explicitly providing "Allow" or "Always Allow" consent from the lock screen? We would appreciate any clarification or official documentation related to this behavior. Thank you!
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Sep ’25
In app purchase rejected
Thanks for view post. I found some problem on step review in-app-purchase. All item in app purchase hold on "Developer Action Needed" then I check issue i found it because all item in section App Store Localization rejected. I don't know why it rejected on board don't show any information that why it was rejected. if who know please suggest me. I try many renew create item but every i resume for submit it every time it was reject aways I attached example my rejected image below thanks.
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Unwanted Communication Reporting extension crash
I'm trying to implement Unwanted SMS and Calls reporting in an app I'm doing in my idle time. If I place a UITextField or UITextView inside a ILClassificationUIExtensionViewController, every time I select on such control the extension crashes without any logs. The closet idea I have on why it crashes it has something to do with iOS requesting the dictation feature. I'm using the latest (beta 8 at the time) iOS 16.0 beta on my iPhone 13 pro. Attaching my code here if you want to try for yourself: github
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Apr ’26
PKPassLibrary.requestAutomaticPassPresentationSuppression Behavior
We are implementing a feature that uses PKPassLibrary.requestAutomaticPassPresentationSuppression to prevent the Wallet from appearing when unlocking a lock. We have already completed the approval process for the entitlement to enable Pass Presentation Suppression. In most cases, our code snippet works as expected, and the result is .success. However, we are also encountering other results, such as .denied, .alreadyPresenting, and .cancelled or .notSupported, which cause the Wallet to appear for users. Here's the code snippet we're using: PKPassLibrary.requestAutomaticPassPresentationSuppression { result in logger.log( .info, "PKPassLibrary suppression result: \(result.description)", LogContext.homeFeature ) } I would appreciate clarification on the following points: What's the meaning of each result type (.denied, .alreadyPresenting, .cancelled, .notSupported) beyond what is mentioned in the documentation? The documentation here does not provide additional details. What is the recommended handling for these specific result states? Should we be taking different actions or retries based on each case? Thank you very much for your help. Best, Ramiro.
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Aug ’25
SwiftData and CloudKit
Recently I've been working on a demo project called iLibrary. The main goal was to learn more about CloudKit and SwiftData. After a while I noticed that there were some hangs/freezes when running the app in debug mode. I first tried this with Xcode 15.4 and iOS 17.5. Here the hang only appears at the beginning, but only for a few seconds. But when I exit debug mode, there are no more hangs. With Xcode 16 beta 4 and iOS 18 it looks completely different. In this case, the hangs and freezes are always present, whether in debug mode or not. And it's not just at the beginning, it's throughout the app. I'm aware that this is still a beta, but I still find this weird. And when I profile this I see that the main thread gets quite overloaded. Interestingly, my app doesn't have that many operations going on. So I guess something with the sync of SwiftData or my CloudKitManger where I fetch some records from the public database is not running fine. Lastly, I wanted to delete the iCloud app data. So I went to Settings and tried to delete it, but it didn't work. Is this normal? Does anyone have any idea what this could be? Or has anyone encountered this problem as well? I'd appreciate any support. My project: https://github.com/romanindermuehle/iLibrary
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Aug ’25
AppShortcutsProvider limitedAvailability in result builder crash
My team is preparing for iOS 18, and wanted to add intents using assistant schemas that are iOS 18 and above restricted. We noticed that the result builder for AppShortcuts added support for limitedAvailabilityCondition from iOS 17.4 so we marked the whole struct as available from it. The app compiles but writing a check like below inside appShortcuts property a crash will happen in iOS 17.5 runtime. (Removing the #available) is solving this problem. if #available(iOS 18, *) { AppShortcut( intent: SearchDonut(), phrases: [ "Search for a donut in \(.applicationName)" ], shortTitle: "search", systemImageName: "magnifyingglass" ) } We tried out putting the os check above and returning shortcuts in arrays and that both compiles and runs but then AppShortcuts.strings sends warnings that the phrases are not used (This phrase is not used in any App Shortcut or as a Negative Phrase.) because the script that extracts the phrases somehow fails to perform when shortcuts are written like below: static var appShortcuts: [AppShortcut] { if #available(iOS 18.0, *) { return [ AppShortcut( intent: CreateDonutIntent(), phrases: [ "Create Donut in \(.applicationName)", ], shortTitle: "Create Donut", systemImageName: "pencil" ) ] } else { return [ AppShortcut( intent: CreateDonutIntent(), phrases: [ "Create Donut in \(.applicationName)", ], shortTitle: "Create Donut", systemImageName: "pencil" ) ] } } This is very problematic because we can't test out on TF with external users new intents dedicated for iOS 18. We filed a radar under FB15010828
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Nov ’25
Live Activity triggered by AlarmKit remains as an empty state
I configured my app to show a Live Activity when an alarm rings using AlarmKit. However, if I dismiss the Live Activity by tapping somewhere other than the X button, and then long-press the Dynamic Island, a new Live Activity appears that is long but contains no information. Currently, the only way I can remove this empty Live Activity is to press the X button while the alarm is in the snooze state. Pressing the X button on the initial alarm does not remove it. Is there any way to prevent this behavior or properly handle / clean up this empty Live Activity?
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Mar ’26
CloudKit: how to handle CKError partialFailure when using NSPersistentCloudKitContainer?
I'm using NSPersistentCloudKitContainer with Core Data and I receive errors because my iCloud space is full. The errors printed are the following: <CKError 0x280df8e40: "Quota Exceeded" (25/2035); server message = "Quota exceeded"; op = 61846C533467A5DF; uuid = 6A144513-033F-42C2-9E27-693548EF2150; Retry after 342.0 seconds>. I want to inform the user about this issue, but I can't find a way to access the details of the error. I'm listening to NSPersistentCloudKitContainer.eventChangedNotification, I receive a error of type .partialFailure. But when I want to access the underlying errors, the partialErrorsByItemID property on the error is nil. How can I access this Quota Exceeded error? import Foundation import CloudKit import Combine import CoreData class SyncMonitor { fileprivate var subscriptions = Set<AnyCancellable>() init() { NotificationCenter.default.publisher(for: NSPersistentCloudKitContainer.eventChangedNotification) .sink { notification in if let cloudEvent = notification.userInfo?[NSPersistentCloudKitContainer.eventNotificationUserInfoKey] as? NSPersistentCloudKitContainer.Event { guard let ckerror = cloudEvent.error as? CKError else { return } print("Error: \(ckerror.localizedDescription)") if ckerror.code == .partialFailure { guard let errors = ckerror.partialErrorsByItemID else { return } for (_, error) in errors { if let currentError = error as? CKError { print(currentError.localizedDescription) } } } } } // end of sink .store(in: &subscriptions) } }
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Aug ’25
New push notifications for widgets seem too limited for actual production-level apps
I was very excited to see the addition of push notifications for widgets. However upon further inspection, the way it is implemented seems too limiting for real life apps. I have an app for time tracking with my own backend. The app syncs with my backend in the main executable (main target). My widgets are more lightweight as they only access data in the shared app container, but they don't perform sync with the server directly to avoid race conditions with the main app. I was under the impression that the general direction of the platform is to be doing most things in the main app target (also App Intents work that way for the most part), so the fact that the WidgetPushHandler just calls the widget's method to reload the timeline is very unfortunate. In an ideal scenario I also need the main app to be 'woken up' to perform the sync with the server, and once that's done I'd update the widget's timeline and where I would just read data from the shared app container. So, my questions are: What is the recommended way of updating the widgets when this push notification arrives in the case that the main app target needs to perform the sync first? Is there any way how to detect that the method func timeline(for configuration: InteractiveTrackingWidgetConfigurationAppIntent, in context: Context) was called as a result of the push notification being received? Can I somehow schedule a background task from the widget's reloadTimeline() function? How can I get the push token later, in case that I don't save it right away the first time the WidgetPushHandler's pushTokenDidChange() is called? Thank you for your work on this and hopefully for your answers. FB19356256
Replies
3
Boosts
2
Views
347
Activity
Jan ’26
Incompatibility with Android devices and Wifi Aware standard
There is no available API that allows you to connect to Android. The current APIs that are provided are not compatible outside of the Apple Ecosystem. For example, Android requires you to set a service name and a password where iOS sets a service and a PIN authentication strategy in a specific format that’s not compatible. It looks like the implementation is not following the Wifi Aware Specifications. To enable cross platform interoperability while providing security, could you adopt the same strategy as with Bluetooth and enable iOS users to enable the sharing and subscription of services with Everyone.
Replies
7
Boosts
5
Views
633
Activity
Oct ’25
Using wildcard for applinks in iOS stopped working
Hi everyone, I've been working on an application that provides different subdomains for different customers, so we need to support app linking with all of them. However, using wildcard notation like applinks:*.domain.com doesn't work, while hardcoding applinks:subdomain.domain.com works fine. The association file is being served from both the main domain and subdomains. It used to work fine about a month ago, and I can't find any recent breaking changes on Apple's side . Any ideas why this could happen. ?
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3
Boosts
0
Views
807
Activity
1w
SKAdNetwork: Error while updating conversion value
Hello! I make use of the new iOS 15.4 SKAdNetwork.updatePostbackConversionValue feature: SKAdNetwork.updatePostbackConversionValue(0) { error in                 if let error = error {                     print(error.localizedDescription)                 }             } I am not sure why, but I always see this error message in the console: SKAdNetwork: Error while updating conversion value: Error Domain=SKANErrorDomain Code=10 "(null)" The operation couldn’t be completed. (SKANErrorDomain error 10.) Any idea what’s going on there? What does Error Code 10 mean? Couldn't find anything in the documentation about that so far. I have the NSAdvertisingAttributionReportEndpoint key with domain (https://api2.branch.io/v1/skadnetwork/advertiser_app) in my .plist.
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7
Boosts
0
Views
7.1k
Activity
May ’25
Are read-only filesystems currently supported by FSKit?
I'm writing a read-only filesystem extension. I see that the documentation for loadResource(resource:options:replyHandler:) claims that the --rdonly option is supported, which suggests that this should be possible. However, I have never seen this option provided to my filesystem extension, even if I return usableButLimited as a probe result (where it doesn't mount at all - FB19241327) or pass the -r or -o rdonly options to the mount(8) command. Instead I see those options on the volume's activate call. But other than saving that "readonly" state (which, in my case, is always the case) and then throwing on all write-related calls I'm not sure how to actually mark the filesystem as "read-only." Without such an indicator, the user is still offered the option to do things like trash items in Finder (although of course those operations do not succeed since I throw an EROFS error in the relevant calls). It also seems like the FSKit extensions that come with the system handle read-only strangely as well. For example, for a FAT32 filesystem, if I mount it like mount -r -F -t msdos /dev/disk15s1 /tmp/mnt Then it acts... weirdly. For example, Finder doesn't know that the volume is read-only, and lets me do some operations like making new folders, although they never actually get written to disk. Writing may or may not lead to errors and/or the change just disappearing immediately (or later), which is pretty much what I'm seeing in my own filesystem extension. If I remove the -F option (thus using the kernel extension version of msdos), this doesn't happen. Are read-only filesystems currently supported by FSKit? The fact that extensions like Apple's own msdos also seem to act weirdly makes me think this is just a current FSKit limitation, although maybe I'm missing something. It's not necessarily a hard blocker given that I can prevent writes from happening in my FSKit module code (or, in my case, just not implement such features at all), but it does make for a strange experience. (I reported this as FB21068845, although I'm mostly asking here because I'm not 100% sure this is not just me missing something.)
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22
Boosts
0
Views
1k
Activity
1w
iOS Background Execution Limits
I regularly see questions, both here on the Apple Developer Forums and in my Day Job™ at DTS, that are caused by a fundamental misunderstanding of how background execution works on iOS. These come in many different variants, for example: How do I keep my app running continuously in the background? If I schedule a timer, how do I get it to fire when the screen is locked? How do I run code in the background every 15 minutes? How do I set up a network server that runs in the background? How can my app provide an IPC service to another one of my apps while it’s in the background? How can I resume my app in the background if it’s been ‘force quit’ by the user? The short answer to all of these is You can’t. iOS puts strict limits on background execution. Its default behaviour is to suspend your app shortly after the user has moved it to the background; this suspension prevents the process from running any code. There’s no general-purpose mechanism for: Running code continuously in the background Running code at some specific time in the background Running code periodically at a guaranteed interval Resuming in the background in response to a network or IPC request [1] However, iOS does provide a wide range of special-purpose mechanisms for accomplishing specific user goals. For example: If you’re building a music player, use the audio background mode to continue playing after the user has moved your app to the background. If you’re building a timer app, check out the AlarmKit framework. On older systems, use a local notification to notify the user when your timer has expired. If you’re building a video player app, use AVFoundation’s download support. Keep in mind that the above is just a short list of examples. There are many other special-purpose background execution mechanisms, so you should search the documentation for something appropriate to your needs. IMPORTANT Each of these mechanisms fulfils a specific purpose. Do not attempt to use them for some other purpose. Before using a background API, read clause 2.5.4 of the App Review Guidelines. Additionally, iOS provides some general-purpose mechanisms for background execution: To resume your app in the background in response to an event on your server, use a background notification (aka a ‘silent’ push). For more information, see Pushing background updates to your App. To request a small amount of background execution time to refresh your UI, use the BGAppRefreshTaskRequest class. To request extended background execution time, typically delivered overnight when the user is asleep, use the BGProcessingTaskRequest class. To continue user-visible work after the user has left your app, use the BGContinuedProcessingTask class. To prevent your app from being suspended for a short period of time so that you can complete some user task, use a UIApplication background task. For more information on this, see UIApplication Background Task Notes. To download or upload a large HTTP resource, use an URLSession background session. All of these mechanisms prevent you from abusing them to run arbitrary code in the background. As an example, consider the URLSession resume rate limiter. For more information about these limitations, and background execution in general, I strongly recommend that you watch WWDC 2020 Session 10063 Background execution demystified [2]. It’s an excellent resource. Specifically, this talk addresses a common misconception about the app refresh mechanism (BGAppRefreshTaskRequest and the older background fetch API). Folks assume that app refresh will provide regular background execution time. That’s not the case. The system applies a range of heuristics to decide which apps get app refresh time and when. This is a complex issue, one that I’m not going to try to summarise here, but the take-home message is that, if you expect that the app refresh mechanism will grant you background execution time, say, every 15 minutes, you’ll be disappointed. In fact, there are common scenarios where it won’t grant you any background execution time at all! Watch the talk for the details. [1] iOS 26 introduced support for general-purpose IPC, in the form of enhanced security helper extensions. However, these can only be invoked by the container app, and that means there’s no background execution benefit. [2] Sadly the video is currently not available from Apple. I’ve left the link in place just in case it comes back. When the user ‘force quits’ an app by swiping up in the multitasking UI, iOS interprets that to mean that the user doesn’t want the app running at all. So: If the app is running, iOS terminates it. iOS also sets a flag that prevents the app from being launched in the background. That flag gets cleared when the user next launches the app manually. This gesture is a clear statement of user intent; there’s no documented way for your app to override the user’s choice. Note In some circumstances iOS will not honour this flag. The exact cases where this happens are not documented and have changed over time. Finally, if you have questions about background execution that aren’t covered by the resources listed here, please open a new thread on the forums with the details. Put it in a reasonable subtopic and tag it appropriately for the technology you’re using; if nothing specific springs to mind, use Background Tasks. Also, make sure to include details about the specific problem you’re trying to solve because, when it comes to background execution, the devil really is in the details. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com" Change history: 2026-01-09 Added a reference to AlarmKit. Added a reference to BGContinuedProcessingTask. Add a footnote about IPC and another one about WWDC 2020 Session 10063. Made other minor editorial changes. 2024-03-21 Added a discussion of ‘force quit’. 2023-05-11 Added a paragraph that explains a common misconception about the app refresh mechanism. Made other minor editorial changes. 2021-08-12 Added more entries to the common questions list, this time related to networking and IPC. Made minor editorial changes. 2021-07-26 Extended the statement about what’s not possible to include “running code periodically at a guaranteed interval”. 2021-07-22 First posted.
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Jan ’26
iOS 26 didRegisterForRemoteNotificationsWithDeviceToken is not being called
We have an app in Swift that uses push notifications. It has a deployment target of iOS 15.0 I originally audited our app for iOS 26 by building it with Xcode 26 beta 3. At that point, all was well. Our implementation of application:didRegisterForRemoteNotificationsWithDeviceToken was called. But when rebuilding the app with beta 4, 5 and now 6, that function is no longer being called. I created a simple test case by creating a default iOS app project, then performing these additional steps: Set bundle ID to our app's ID Add the Push Notifications capability Add in application:didRegisterForRemoteNotificationsWithDeviceToken: with a print("HERE") just to set a breakpoint. Added the following code inside application:didFinishLaunchingWithOptions: along with setting a breakpoint on the registerForRemoteNotifications line: UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .alert, .sound]) { granted, _ in DispatchQueue.main.async { UIApplication.shared.registerForRemoteNotifications() } } Building and running with Xcode 26 beta 6 (17A5305f) generates these two different outcomes based upon the OS running in the Simulator: iPhone 16 Pro simulator running iOS 18.4 - both breakpoints are reached iPhone 16 Pro simulator running iOS 26 - only the breakpoint on UIApplication.shared.registerForRemoteNotifications is reached. Assuming this is a bug in iOS 26. Or, is there something additional we now need to do to get push notifications working?
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8
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Jan ’26
StoreKit Configuration Not Syncing to Xcode
Hello! I am attempting to add Subscriptions to an App that Is already published on the App Store. I cannot get Xcode to actually sync what is in my App Store Connect. When adding the Storekit configuration file, I go through the automatic linking process and select the proper bundleID. The configuration file says 'Synced @ [CurrentTime]' however there are no subscriptions listed in there. I have attempted deleting the file several times, creating a new subscription group. With no success. Do I need to publish the subscriptions without the features first? Upon attempting to write the supporting code that will enable these features within the app, I cannot get Xcode to identify that I have these subscriptions. I have also tried pushing these to TestFlight, still with no success. Thank you.
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1w
Inquiry Regarding the Scope of DeclaredAgeRange Acquisition​
We are integrating Apple’s DeclaredAgeRange SDK. To comply with relevant regulatory requirements, our understanding is as follows: The app is only required to obtain the declared age range for users located in Texas. For users outside of Texas, we should not proactively request age range information. Accordingly, we would like to confirm the following: Are we required to present the age range request prompt to all users in the United States? If yes, we are concerned that this may significantly impact the overall user experience. If it is permissible to request age range only for Texas users, how can we reliably determine whether a user is located in Texas on the client side? For example, does Apple provide an API or recommended method for accurately identifying a user’s region (specifically Texas)?
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4
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4
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400
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Jan ’26
JWT Token Errors
I have an app using weatherkit and its currently live and up on the app store, recently I had some users report to me that they had been receiving errors loading weather data, I had error handling built in and it reported an issue with apples authentication server Failed to generate jwt token for: com.apple.weatherkit.authservice with error: Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2 "(null)" I have not come across this during the development lifecycle of my project, there where no codebase changes, it just stopped functioning. The app entitlements are valid and correct, Weatherkit is enabled in both xcode and across my Certs, identifiers and profiles. I was not experiencing this issue until I reinstalled the app from the app store completly by first removing it and then re-installing fresh. Hard reboots do not help and I do not want to start suggesting to my users to factory reset their devices. We are using WeatherKit in both our main app and widget, relying entirely on Apple’s framework for authentication and token management. We do not generate or inject our own JWT tokens; all token handling is managed by WeatherKit. We have implemented a debug menu with the following actions: Clear WeatherKit JWT tokens from the keychain Clear all related UserDefaults key Clear all app group data and all UserDefaults. Perform a “nuclear” cache clear (removes all app data, keychain, and cached files). We log all WeatherKit fetch attempts and failures, including authentication errors, both in the app and widget and get nothing but code 2. We have attempted all of the above steps, but continue to experience issues with WeatherKit JWT authentication We would appreciate any guidance or insight into what else could be causing persistent WeatherKit JWT/authentication issues, or if there are any additional steps we should try. P.S. - Tested and experiencing the same issues on an iPhone 15 Pro Max and iPhone 15 The Pro Max is on the iOS 26 Beta // and the 15 is on the latest iOS 18
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5
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328
Activity
Jun ’25
AppStore.sync() not restoring purchases
On an app that was using the old API for In-App Purchases (StoreKit 1). The app is already published on the App Store. The purchase is non-consumable. While trying to migrate to StoreKit 2, I'm unable to restore purchases. Specifically displaying and purchasing products works as expected, but when deleting and reinstalling the app, and then trying to restore purchases I can't do it. I'm trying to restore them using the new APIs but it doesn't seem to be working. What I have tried so far: I'm listening for transaction updates during the whole lifetime of the app, with: Task.detached { for await result in Transaction.updates { if case let .verified(safe) = result { } } } I have a button that calls this method, but other than prompting to log in again with the Apple ID it doesn't seem to have any effect at all: try? await AppStore.sync() This doesn't return any item for await result in Transaction.currentEntitlements { if case let .verified(transaction) = result { } } This doesn't return any item for await result in Transaction.all { if case let .verified(transaction) = result { } } As mentioned before I'm trying this after purchasing the item and deleting the app. So I'm sure it should be able to restore the purchase. Am trying this both with a Configuration.storekit file on the simulator, and without it on a real device, in the Sandbox Environment. Has anyone being able to restore purchases using StoreKit 2? PD: I already filed a feedback report on Feedback Assistant, but so far the only thing that they have replied is: Because StoreKit Testing in Xcode is a local environment, and the data is tied to the app, when you delete the app you're also deleting all the transaction data for that app in the Xcode environment. The code snippets provided are correct usage of the API. So yes, using a Configuration.storekit file won't work on restoring purchases, but if I can't restore them on the Sandbox Environment I'm afraid that this won't work once released, leaving my users totally unable to restore what they have already purchased.
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1w
Get update token from the OS when the Live Activity is started from the backend, without the user explicitly providing "Allow" or "Always Allow" consent from the lock screen
We are currently using Live Activities in our app and supporting both of the following use cases: Starting a Live Activity directly from the app using ActivityKit APIs. Starting a Live Activity from the backend using the start token. In the first case (initiated from the app), the OS generates an update token, and we are able to continuously update the Live Activity via our backend—even if the user has not explicitly provided "Allow" or "Always Allow" consent from the lock screen. This works as expected. In the second case (initiated from the backend), if the user does provide consent ("Allow" or "Always Allow") from the lock screen, we receive the update token and can continue updating the Live Activity. However, if the user does not provide consent, the OS does not provide the update token, and we are unable to send further updates. Question: Is it possible to receive the update token from the OS when the Live Activity is started from the backend, without the user explicitly providing "Allow" or "Always Allow" consent from the lock screen? We would appreciate any clarification or official documentation related to this behavior. Thank you!
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5
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291
Activity
Sep ’25
In app purchase rejected
Thanks for view post. I found some problem on step review in-app-purchase. All item in app purchase hold on "Developer Action Needed" then I check issue i found it because all item in section App Store Localization rejected. I don't know why it rejected on board don't show any information that why it was rejected. if who know please suggest me. I try many renew create item but every i resume for submit it every time it was reject aways I attached example my rejected image below thanks.
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3w
Unwanted Communication Reporting extension crash
I'm trying to implement Unwanted SMS and Calls reporting in an app I'm doing in my idle time. If I place a UITextField or UITextView inside a ILClassificationUIExtensionViewController, every time I select on such control the extension crashes without any logs. The closet idea I have on why it crashes it has something to do with iOS requesting the dictation feature. I'm using the latest (beta 8 at the time) iOS 16.0 beta on my iPhone 13 pro. Attaching my code here if you want to try for yourself: github
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11
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Activity
Apr ’26
PKPassLibrary.requestAutomaticPassPresentationSuppression Behavior
We are implementing a feature that uses PKPassLibrary.requestAutomaticPassPresentationSuppression to prevent the Wallet from appearing when unlocking a lock. We have already completed the approval process for the entitlement to enable Pass Presentation Suppression. In most cases, our code snippet works as expected, and the result is .success. However, we are also encountering other results, such as .denied, .alreadyPresenting, and .cancelled or .notSupported, which cause the Wallet to appear for users. Here's the code snippet we're using: PKPassLibrary.requestAutomaticPassPresentationSuppression { result in logger.log( .info, "PKPassLibrary suppression result: \(result.description)", LogContext.homeFeature ) } I would appreciate clarification on the following points: What's the meaning of each result type (.denied, .alreadyPresenting, .cancelled, .notSupported) beyond what is mentioned in the documentation? The documentation here does not provide additional details. What is the recommended handling for these specific result states? Should we be taking different actions or retries based on each case? Thank you very much for your help. Best, Ramiro.
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542
Activity
Aug ’25
SwiftData and CloudKit
Recently I've been working on a demo project called iLibrary. The main goal was to learn more about CloudKit and SwiftData. After a while I noticed that there were some hangs/freezes when running the app in debug mode. I first tried this with Xcode 15.4 and iOS 17.5. Here the hang only appears at the beginning, but only for a few seconds. But when I exit debug mode, there are no more hangs. With Xcode 16 beta 4 and iOS 18 it looks completely different. In this case, the hangs and freezes are always present, whether in debug mode or not. And it's not just at the beginning, it's throughout the app. I'm aware that this is still a beta, but I still find this weird. And when I profile this I see that the main thread gets quite overloaded. Interestingly, my app doesn't have that many operations going on. So I guess something with the sync of SwiftData or my CloudKitManger where I fetch some records from the public database is not running fine. Lastly, I wanted to delete the iCloud app data. So I went to Settings and tried to delete it, but it didn't work. Is this normal? Does anyone have any idea what this could be? Or has anyone encountered this problem as well? I'd appreciate any support. My project: https://github.com/romanindermuehle/iLibrary
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9
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Aug ’25
StoreKit1:在 iOS 26.4 中[NSBundle mainBundle] appStoreReceiptURL 无法按预期工作
在iOS26.4中,新的交易完成后[NSBundle mainBundle] appStoreReceiptURL 获取的是历史票据,未给出新的票据
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2
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435
Activity
Mar ’26
AppShortcutsProvider limitedAvailability in result builder crash
My team is preparing for iOS 18, and wanted to add intents using assistant schemas that are iOS 18 and above restricted. We noticed that the result builder for AppShortcuts added support for limitedAvailabilityCondition from iOS 17.4 so we marked the whole struct as available from it. The app compiles but writing a check like below inside appShortcuts property a crash will happen in iOS 17.5 runtime. (Removing the #available) is solving this problem. if #available(iOS 18, *) { AppShortcut( intent: SearchDonut(), phrases: [ "Search for a donut in \(.applicationName)" ], shortTitle: "search", systemImageName: "magnifyingglass" ) } We tried out putting the os check above and returning shortcuts in arrays and that both compiles and runs but then AppShortcuts.strings sends warnings that the phrases are not used (This phrase is not used in any App Shortcut or as a Negative Phrase.) because the script that extracts the phrases somehow fails to perform when shortcuts are written like below: static var appShortcuts: [AppShortcut] { if #available(iOS 18.0, *) { return [ AppShortcut( intent: CreateDonutIntent(), phrases: [ "Create Donut in \(.applicationName)", ], shortTitle: "Create Donut", systemImageName: "pencil" ) ] } else { return [ AppShortcut( intent: CreateDonutIntent(), phrases: [ "Create Donut in \(.applicationName)", ], shortTitle: "Create Donut", systemImageName: "pencil" ) ] } } This is very problematic because we can't test out on TF with external users new intents dedicated for iOS 18. We filed a radar under FB15010828
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2
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5
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747
Activity
Nov ’25
Live Activity triggered by AlarmKit remains as an empty state
I configured my app to show a Live Activity when an alarm rings using AlarmKit. However, if I dismiss the Live Activity by tapping somewhere other than the X button, and then long-press the Dynamic Island, a new Live Activity appears that is long but contains no information. Currently, the only way I can remove this empty Live Activity is to press the X button while the alarm is in the snooze state. Pressing the X button on the initial alarm does not remove it. Is there any way to prevent this behavior or properly handle / clean up this empty Live Activity?
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7
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520
Activity
Mar ’26
CloudKit: how to handle CKError partialFailure when using NSPersistentCloudKitContainer?
I'm using NSPersistentCloudKitContainer with Core Data and I receive errors because my iCloud space is full. The errors printed are the following: <CKError 0x280df8e40: "Quota Exceeded" (25/2035); server message = "Quota exceeded"; op = 61846C533467A5DF; uuid = 6A144513-033F-42C2-9E27-693548EF2150; Retry after 342.0 seconds>. I want to inform the user about this issue, but I can't find a way to access the details of the error. I'm listening to NSPersistentCloudKitContainer.eventChangedNotification, I receive a error of type .partialFailure. But when I want to access the underlying errors, the partialErrorsByItemID property on the error is nil. How can I access this Quota Exceeded error? import Foundation import CloudKit import Combine import CoreData class SyncMonitor { fileprivate var subscriptions = Set<AnyCancellable>() init() { NotificationCenter.default.publisher(for: NSPersistentCloudKitContainer.eventChangedNotification) .sink { notification in if let cloudEvent = notification.userInfo?[NSPersistentCloudKitContainer.eventNotificationUserInfoKey] as? NSPersistentCloudKitContainer.Event { guard let ckerror = cloudEvent.error as? CKError else { return } print("Error: \(ckerror.localizedDescription)") if ckerror.code == .partialFailure { guard let errors = ckerror.partialErrorsByItemID else { return } for (_, error) in errors { if let currentError = error as? CKError { print(currentError.localizedDescription) } } } } } // end of sink .store(in: &subscriptions) } }
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Aug ’25