Posts under App & System Services topic

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Secure Integration of Apple Calendar (iCalendar) in a Third-Party App
Hi everyone, We’re integrating Apple Calendar (iCalendar) into our Codapet app but haven’t found any official Apple APIs for event management and synchronisation. Currently, we use CalDAV with Apple ID authentication and an app-specific password (ASP), storing the ASP encrypted in our database and decrypting it for each API call. We’re looking for a more secure and recommended approach to this integration. Does Apple provide dedicated APIs for calendar sync, or is there a better alternative to avoid sending the ASP with every request? Any guidance or best practices would be greatly appreciated! Thanks!
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153
Mar ’25
The operation could not be completed. (Error 2 in SKErrorDomain.) during subscription upgrade
I have a renewing monthly subscription in my app and recently added upgrade possibilities to yearly and 6 month subscriptions. Those new subscriptions were reviewed, approved and published to App Store. I'm showing a modal for users in the app from where they can upgrade their subscription. Upgrading was tested with real devices on Sandbox and TestFlight. There has been successful purchases through the in app modal in production app, and directly upgrading from App Store. However, for some users there seems to happen a failed transaction with paymentCancelled error code during the upgrade. The IAP is still successful, their subscription is upgraded and they haven't voluntarily canceled the IAP. The localized description of the error is "Toimintoa ei voitu suorittaa. (Virhe 2 kohteessa SKErrorDomain.)" which translates to "The operation could not be completed. (Error 2 in SKErrorDomain.)" These users have various iPhones (iPhone 12 Pro, iPhone 14 Pro, iPhone 15 Pro, iPhone 16 Pro) with up to date iOS versions (>= 18.3.1). I'm receiving DID_CHANGE_RENEWAL_PREF (UPGRADE) server notification of these purchases on my server. I haven't been able to reproduce this error myself. Any ideas why StoreKit might fail the transaction with paymentCancelled error but still successfully upgrade the subscription?
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189
Mar ’25
Generating ephemeralPublicKey for in-app provisioning
I am developing an app to add Discover cards to Apple Wallet. Unlike Visa, MasterCard, etc., Discover does not have APIs that return activationData, encryptedPassData and ephemeralPublicKey for a given card, so I have created a backend server to handle this. In my server, I am unsure how to generate the ephemeralPublicKey. Do I need to use the merchant certificate? If so, how do I use it to generate the ephemeralPublicKey? I would appreciate it if someone could provide me with a step-by-step guide on how to generate ephemeralPublicKey for provisioning a card.
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300
Feb ’25
Inquiry Regarding Apple Pay Currency Support
Team, We are currently checking out on Apple Pay using ALL and MRU as currencies. We have authorized the payment via Touch ID; however, we are not receiving the onPaymentAuthorized event. Could you please confirm if Apple Pay supports ALL and MRU currencies? We have confirmed that it works with other currencies. Thank you!
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32
Apr ’25
Does DynamicOptionsProvider work on watchOS?
I'm curious, why DynamicOptionsProvider is available on watchOS? Is there any way to present options to the user? For example in Emoji Rangers project: struct EmojiRangerSelection: AppIntent, WidgetConfigurationIntent { static let intentClassName = "EmojiRangerSelectionIntent" static var title: LocalizedStringResource = "Emoji Ranger Selection" static var description = IntentDescription("Select Hero") @Parameter(title: "Selected Hero", default: EmojiRanger.cake, optionsProvider: EmojiRangerOptionsProvider()) var hero: EmojiRanger? struct EmojiRangerOptionsProvider: DynamicOptionsProvider { func results() async throws -> [EmojiRanger] { EmojiRanger.allHeros } } func perform() async throws -> some IntentResult { return .result() } } On watchOS we usually use recommendations() to give the user predefined choice of configured widgets. Meanwhile in AppIntentProvider recommendations are empty: struct AppIntentProvider: AppIntentTimelineProvider { ... func recommendations() -> [AppIntentRecommendation<EmojiRangerSelection>] { [] } } Does it imply that there's a way to use DynamicOptionsProvider on watchOS somehow? BTW, WidgetConfiguration.promptsForUserConfiguration() is one of the methods that are not available on watchOS. And also, the Emoji Ranger project doesn't show widgets (complications) on watchOS out of the box.
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353
Mar ’25
PKPushRegistry not running in background or when app is killed
self.pushRegistry = [[PKPushRegistry alloc] initWithQueue:dispatch_get_main_queue()]; self.pushRegistry.delegate = self; self.pushRegistry.desiredPushTypes = [NSSet setWithObject:PKPushTypeVoIP]; //处理接收到的VoIP推送 (void)pushRegistry:(PKPushRegistry *)registry didReceiveIncomingPushWithPayload:(PKPushPayload *)payload forType:(PKPushType)type withCompletionHandler:(void(^)(void))completion then we send message from our server or from apple's cloud service: https://icloud.developer.apple.com/dashboard/notifications website services: when app is in foreground,withCompletionHandler wil be called correctly,but when app is in background or has killed ,withCompletionHandler not be called!!! the background fetch、voice over ip is checked in signing & capabilities tabs why?why?why?why?why?why?why?why?why?
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402
Mar ’25
Default payment method option bug?
Hi team at Apple, here is a scenario we came across: The order of priority of payment methods in Apple Wallet follows: Credit Debit Apple Cash Our app displays a payment sheet that excludes credit cards. Instead of a debit card, the default payment option shown to the user on the payment sheet is Apple Cash. Is this a known issue or have we configured something wrong in our end?
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300
Feb ’25
Auto Renew Subscription Model
Hi, I want to offer an auto-renewable subscription (e.g., $1/month) that grants users (10 document analyses per month), with the count resetting at the start of each billing cycle. -Unused analyses will not roll over to the next month- Additionally, any analyses generated while the subscription is active will remain accessible to the user permanently, even if they cancel the subscription. The paywall, app description, and metadata will clearly state that the subscription grants (10 document analyses per month with no rollover) We want this to be implemented as an auto-renewable subscription model, not as a consumable service or a token/credit system (which we want to avoid). Is this model acceptable under Apple’s guidelines, or would it be considered a token/credit system? Any insights or alternative suggestions would be appreciated.. Thanks
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319
Mar ’25
UE 5.4 Game Instantly Crash on iOS devices on Testflight
Hi, I'm working on a game for the past few years using first Unreal Engine 4, and now Unreal Engine 5.4.4. I'm experiencingan unusual crash on startup on some devices . The crash is so fast that I'm barely able to see the launching screen sometimes because the app closes itself before that. I got a EXC_CRASH (SIGABRT) so I know that it's a null pointer reference, but I can't quite wrap my head about the cause, I think that's something messed up in the packaging of the app, but here is where I'm blocked, I'm not that accustomed with apple devices. If someone has some advise to give, please, any help will be very valuable. Many thanks. Log : Crash Log on Ipad
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560
Feb ’25
Start multiple Live Activities in the perform() of App Intents
In my case, when two functions that start each Live Activity(not connected each other) are performed in LiveActivityIntent's perform(), it seems that only one will start. (It's the same to start independently with two Task{}) And, set one to 'opensIntent' and separate it by opening another LiveActivityIntent, the result is same. Also, every time I tap the Intent directly in the shortcut app, one activity will end within a matter of seconds, even if there are two for a while. But, If openAppWhenRun to true, it seem to works without any problems. I would appreciate it if you could give me a tip to fix this problem.
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196
Mar ’25
Does apple make commission on payments made to peers using external processing like Stripe for physical services
So I'm wondering if Apple makes commission on those payments since they're made in the app. For example a user may pay another user to clean their car. This will be handled with Stripe Connect and their balance, payment history, etc will be displayed in the app. Does Apple charge commission on that? The section the app review guidelines that I'm refrencing is below, but I'm still a little confused. 3.1.3(e) Goods and Services Outside of the App: If your app enables people to purchase physical goods or services that will be consumed outside of the app, you must use purchase methods other than in-app purchase to collect those payments, such as Apple Pay or traditional credit card entry.
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206
Mar ’25
AppIntent, should I delete previous donations to the system and how?
Hi, In my application I am donating AppIntent instances that I have to the system using the donate() API. I recently came across this article that talks about deleting donations but it does not mention how to handle AppIntent instances. I am wondering when working with dynamic AppIntents (with different properties that can change in the future), should I be worried about "outdated" donated AppIntent instances? And if yes how can I delete previously donated AppIntent instances.
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216
Mar ’25
Core Data and Swift 6 concurrency: returning an NSManagedObject
We're in the process of migrating our app to the Swift 6 language mode. I have hit a road block that I cannot wrap my head around, and it concerns Core Data and how we work with NSManagedObject instances. Greatly simplied, our Core Data stack looks like this: class CoreDataStack { private let persistentContainer: NSPersistentContainer var viewContext: NSManagedObjectContext { persistentContainer.viewContext } } For accessing the database, we provide Controller classes such as e.g. class PersonController { private let coreDataStack: CoreDataStack func fetchPerson(byName name: String) async throws -> Person? { try await coreDataStack.viewContext.perform { let fetchRequest = NSFetchRequest<Person>() fetchRequest.predicate = NSPredicate(format: "name == %@", name) return try fetchRequest.execute().first } } } Our view controllers use such controllers to fetch objects and populate their UI with it: class MyViewController: UIViewController { private let chatController: PersonController private let ageLabel: UILabel func populateAgeLabel(name: String) { Task { let person = try? await chatController.fetchPerson(byName: name) ageLabel.text = "\(person?.age ?? 0)" } } } This works very well, and there are no concurrency problems since the managed objects are fetched from the view context and accessed only in the main thread. When turning on Swift 6 language mode, however, the compiler complains about the line calling the controller method: Non-sendable result type 'Person?' cannot be sent from nonisolated context in call to instance method 'fetchPerson(byName:)' Ok, fair enough, NSManagedObject is not Sendable. No biggie, just add @MainActor to the controller method, so it can be called from view controllers which are also main actor. However, now the compiler shows the same error at the controller method calling viewContext.perform: Non-sendable result type 'Person?' cannot be sent from nonisolated context in call to instance method 'perform(schedule:_:)' And now I'm stumped. Does this mean NSManageObject instances cannot even be returned from calls to NSManagedObjectContext.perform? Ever? Even though in this case, @MainActor matches the context's actor isolation (since it's the view context)? Of course, in this simple example the controller method could just return the age directly, and more complex scenarios could return Sendable data structures that are instantiated inside the perform closure. But is that really the only legal solution? That would mean a huge refactoring challenge for our app, since we use NSManageObject instances fetched from the view context everywhere. That's what the view context is for, right? tl;dr: is it possible to return NSManagedObject instances fetched from the view context with Swift 6 strict concurrency enabled, and if so how?
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113
Apr ’25
Data Processing Addendum
For an app that plan to integrate Apple HealthKit to allow app users to upload and download their health data, where can I locate the Data Processing Addendum that specifies who the data controller and processor will be, and how such health data will be used or distributed?
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60
Apr ’25
Why can't the app get the subscription status occasionally?
Hi, I have developed an app which has two in-app purchase subscriptions. During the test, the app can successfully get the status of the subscriptions. After it's released, I downloaded it from app store and subscribed it with my apple account. I found that in most cases, the app can identify that I have subscribed it and I can use its all functions. But yesterday, when I launched it again, it showed the warning that I haven't subscribed it. I checked my subscription in my account and the subscription status hasn't been changed, that is, I have subscribed it. And after one hour, I launched it again. This time the app identified that I have subscribed it. Why? The following is the code about listening to the subscription status. Is there any wrong about it? HomeView() .onAppear(){ Task { await getSubscriptionStatus() } } func getSubscriptionStatus() async { var storeProducts = [Product]() do { let productIds = ["6740017137","6740017138"] storeProducts = try await Product.products(for: productIds) } catch { print("Failed product request: \(error)") } guard let subscription1 = storeProducts.first?.subscription else { // Not a subscription return } do { let statuses = try await subscription1.status for status in statuses { let info = try checkVerified(status.renewalInfo) switch status.state { case .subscribed: if info.willAutoRenew { purchaseStatus1 = true debugPrint("getSubscriptionStatus user subscription is active.") } else { purchaseStatus1 = false debugPrint("getSubscriptionStatus user subscription is expiring.") } case .inBillingRetryPeriod: debugPrint("getSubscriptionStatus user subscription is in billing retry period.") purchaseStatus1 = false case .inGracePeriod: debugPrint("getSubscriptionStatus user subscription is in grace period.") purchaseStatus1 = false case .expired: debugPrint("getSubscriptionStatus user subscription is expired.") purchaseStatus1 = false case .revoked: debugPrint("getSubscriptionStatus user subscription was revoked.") purchaseStatus1 = false default: fatalError("getSubscriptionStatus WARNING STATE NOT CONSIDERED.") } } } catch { // do nothing } guard let subscription2 = storeProducts.last?.subscription else { // Not a subscription return } do { let statuses = try await subscription2.status for status in statuses { let info = try checkVerified(status.renewalInfo) switch status.state { case .subscribed: if info.willAutoRenew { purchaseStatus2 = true debugPrint("getSubscriptionStatus user subscription is active.") } else { purchaseStatus2 = false debugPrint("getSubscriptionStatus user subscription is expiring.") } case .inBillingRetryPeriod: debugPrint("getSubscriptionStatus user subscription is in billing retry period.") purchaseStatus2 = false case .inGracePeriod: debugPrint("getSubscriptionStatus user subscription is in grace period.") purchaseStatus2 = false case .expired: debugPrint("getSubscriptionStatus user subscription is expired.") purchaseStatus2 = false case .revoked: debugPrint("getSubscriptionStatus user subscription was revoked.") purchaseStatus2 = false default: fatalError("getSubscriptionStatus WARNING STATE NOT CONSIDERED.") } } } catch { // do nothing } if purchaseStatus1 == true || purchaseStatus2 == true { purchaseStatus = true } else if purchaseStatus1 == false && purchaseStatus2 == false { purchaseStatus = false } return }
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212
Mar ’25
The App Remembers Location Access Permission only for 24 Hours
We have a PWA app developed by our company. In order to distribute this app to users' iPhones, we put this PWA app inside an XCode app. That means we put a WebView in XCode to display the PWA URL. Everything works perfect, except for location access. The PWA app access the device location. When the first time the app acess location, it asks for user consent two times, by PWA app and by the XCode app. This is fine. When the user clicks Allow, the XCode app preserves the user choice and never asks again. However, the PWA app keeps on asking user permission every day. If we close the app open again, it will ask one more time. That means twice daily. But if we close and open the app for a third time, it will not ask. It remembers the user choice only for 24 hours. If we install the PWA app directly in iPhone (that means if we add the URL as bookmark in home screen), it is asking for location permission only once. However, when we put this app inside an XCode app it is asking every day. This affects the user experience, and as our users are not tech savvy, causing many issues. Is there a way to force the PWA app inside XCode app to remember the user choice? Any help is very much appreciated. Thanks,
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390
Mar ’25
How can a live caller id database be scaled to support millions of numbers that constantly change if it must be KPIR encoded?
The example database/server provided by Apple for Live Caller ID contains a hardcoded database with a tiny number of pre-defined numbers. However, its not expected to be representational of an live real world usage server. But the question is how can that be accomplished if its a requirement that the data be KPIR encrypted? In real world scenarios, the factors that effect whether a number should be blocked or not are continually changing and evolving on a minute-by-minute basis and new information becomes available or existing information changes. If the database supports tens of millions or hundreds of millions of constantly changing phone numbers, in order to meet the requirements of the Live Caller ID being KPIR encrypted, that would imply the database has to re-encrypt its database of millions endlessly for all time. That seems unfeasable and impractical to implement. Therefore how do the Apple designers of this feature envisage/suggest a real-world server supporting millions of changing data should meet the requirement to be KPIR encrypted?
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446
Mar ’25
Live Activity don't show properly in Apple Watch
I'm facing an issue with Live Activity on the Apple Watch. I followed all the configurations outlined in Apple's official documentation, but during testing, I noticed inconsistent behavior. Some devices can display the Live Activity on the Apple Watch without any issues, while others can only see it on the iPhone, even though they are running the same system version. I've already checked the permissions, and everything is set up correctly, but I still haven't found what might be causing this difference. Has anyone experienced something similar or has any debugging suggestions?
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269
Feb ’25
Apple wallet pass nfc enable
on a span of 4 months we sent 2 for nfc entitlement requests and refused , no reason nothing . i mean all we want is the ability to use nfc on passes nothing else , no idea why this is so complex . with google you don’t even need a developer account and it’s for free , here we pay and we can’t even get the full functionality the passes offer , we got the hardware and the solution but we find out we need an nfc entitlement to allow passes to have nfc ? i mean our use case is very simple instead of having barcode on the passes we want them to be via nfc and we already got the nfc hardware but we find out we need nfc entitlement which we tried requesting but getting refused with no reason at all. at least tell u what is the problem what how to fix it not outright refuse without any reason at all. if anyone got any solution please provide.
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223
Feb ’25