Delve into the world of built-in app and system services available to developers. Discuss leveraging these services to enhance your app's functionality and user experience.

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Locale.Script seems to be returning a value even though the language has no script
We just dropped support for iOS 16 in our app and migrated to the new properties on Locale to extract the language code, region, and script. However, after doing this we are seeing an issue where the script property is returning a value when the language has no script. Here is the initializer that we are using to populate the values. The identifier is coming from the preferredLanguages property that is found on Locale. init?(identifier: String) { let locale = Locale(identifier: identifier) guard let languageCode = locale.language.languageCode?.identifier else { return nil } language = languageCode region = locale.region?.identifier script = locale.language.script?.identifier } Whenever I inspect locale.language I see all of the correct values. However, when I inspect locale.language.script directly it is always returning Latn as the value. If I inspect the deprecated locale.scriptCode property it will return nil as expected. Here is an example from the debugger for en-AU. I also see the same for other languages such as en-AE, pt-BR. Since the language components show the script as nil, then I would expect locale.language.script?.identifier to also return nil.
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122
Jun ’25
[Proposal] Sense & Store – Intelligent App Suggestions from Safari (with On-Device AI)
Hello everyone, I’d like to propose Sense & Store — a seamless integration between Safari and the App Store, powered by on-device AI, designed to understand what users are reading, searching, or selecting in Safari, and suggest relevant apps that match their current context or intention. 🔍 Key Idea: “Sense” the user’s need through intelligent analysis of web content, then “Store” — offer the most relevant app, either already installed or available in the App Store. 🌟 Core Features: • AI-powered context detection directly inside Safari • Real-time app suggestions based on user intent • Smart overlays when selecting text or data (e.g., phone numbers, emails, tools) • Privacy-first: All AI runs on-device (Apple Neural Engine) • Instant App Launch or Installation via StoreKit ✅ Examples: • Reading an article on productivity? → Suggests Notion or Things. • Looking up meditation tips? → Recommends Calm or Headspace. • Selecting a phone number? → Offers CRM or spam blocker apps. • Exploring code samples? → Suggests Pythonista or developer tools. 🔒 Privacy & Performance: • 100% on-device intelligence (no data sent to servers) • Follows Apple’s privacy framework • Works with SafariKit + StoreKit + CoreML ⸻ I’m happy to provide a full prototype roadmap and technical architecture. Feedback and collaboration are welcome! Would love to hear your thoughts — especially from developers who build for Safari, App Clips, or work with CoreML. Thanks! Jose Luiz Horta Barbosa Maurity Cruz - Apple lover...
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103
Jun ’25
How to reset system window private picker alert with Screen Capture Kit
Hi, I would like to reset system window private picker alert with ScreenCapture kit. i can reset the ScreenCapture permission with tccutil reset ScreenCapture. but it does not reset the system window private picker alert. i tried deleting the application directory from container and it does not help. the system window private picker alert uses the old approval i gave and it does not prompt a new alert. How can i starta with fresh screencapture kit settings for an app in testing? Thanks
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107
Jun ’25
UV Index hourly forecast instability
I pull an hourly UV index forecast in my app via WeatherKit, but I’ve noticed it flips back and forth between two "stable" forecasts throughout the day, as if the data source is switching between providers, as a result giving a sense of instability in the presented forecast. Is there any way to lock or specify a single forecast source for greater consistency? I have a feature that notifies users when the UV index crosses a set threshold, but these repeated “back-and-forth” changes trigger multiple alerts that feel spammy and unreliable. Any advice or best practices for handling this would be greatly appreciated.
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129
Jun ’25
Weatherkit API times out at 7am EST
I've noticed that very consistently the Weatherkit API times out when I make a large(-ish) number of calls at 7am east coast time. If I make x calls between 7:00:00 and 7:01:00 about half of them time out (as do retries.) If I make 2x the calls between 7:15:00 and 7:16:00 there are close to zero time outs. I've looked at the logs, at the calls per second, etc., and there is no difference between 7 and 7:15. So, I'm not hitting a rate limit. It seems like Weatherkit itself just can't handle the traffic at peak times. Is there any other explanation? Does Apple intend to make sure the API can handle all the traffic they are getting paid to handle?
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320
Jan ’25
CallKit Keeps Terminating
Hello, I am currently developing a call service using CallKit and VoIP push. Recently, I have encountered a very challenging issue. During testing, when a VoIP push is received, the incomingCall gets triggered continuously, but then it automatically terminates after about 1-2 seconds. I am checking this issue under the debug scheme, and even when switching to different commits, the same problem persists. I suspect it might be an issue with the device, but I would like to confirm the cause and find a solution. Below are some characteristics I have noticed: On this device, when a VoIP push is received, CallKit automatically terminates, but this does not occur when debugging. The issue always occurs when not debugging. Looking at the device console logs related to callservicesd, there are many logs with 'invalidate' appended. For example: Invalidating process assertion for bundle ID from timeout All calls ended. Clearing system uplink muted cache Invalidate callDurationUpdateTimer InCallService has changed process state to 2 InCallService has been suspended; invalidating its XPC client connections. [0x565544180] invalidated because the current process cancelled the connection by calling xpc_connection_cancel() XPC connection invalidated from client These logs appear although our server did not receive any incoming call request, so we did not terminate it on our end. I also checked if there was a crash, but there were no reports left on the device. Could you please share any insights into the cause or solutions for this situation? Thank you.
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366
Jan ’25
UIViewController.view.backgroundColor auto changed when present
This is easy to reproduce,in dark mode, 2 UIViewControllers A and B, A present B. code: class AAA: UIViewController { override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "AAA" view.backgroundColor = .systemBackground } override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { present(UINavigationController(rootViewController: BBB()), animated: true) } } class BBB: UIViewController { override func viewDidLoad() { super.viewDidLoad() navigationItem.title = "BBB" view.backgroundColor = .systemBackground } override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) { dismiss(animated: true) } } before present: after present: Obviously, the backgroundColor of the view has changed. I guess it's because view's backgroundColor is the same as the the window, so changed the color to distinguish between the controller and the background, but this brought unexpected changes which is confusing. I want to know how this happened and how I can manually control it
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295
Jan ’25
ShieldConfigurationExtension & SwiftData
Hi, I am developing a Screen Time App and I am having issues with the ShieldConfigurationExtension (ShieldConfigurationDataSource). I know this extensions is sandboxed but I should be able to read data from the main app. I am using SwiftData as my database, but I am unable to initialize it in the extensions with an error indicating insufficient file permissions. I have App Group set up and I am able to share data using UserDefaults but that is just inconvenient. Is there any way I could just open the SwiftData in read only mode so that I could display the user some info on the shield? SwiftData Init: private func setupContainer() throws { let schema = Schema([ DogEntity.self, HouseEntity.self ]) // Use app group container if available let config: ModelConfiguration if let containerURL = FileManager.default.containerURL( forSecurityApplicationGroupIdentifier: "group.\(Bundle.app.bundleIdentifier ?? "")" ) { config = ModelConfiguration(schema: schema, url: containerURL.appendingPathComponent("default.sqlite")) } else { config = ModelConfiguration(schema: schema) } self.container = try ModelContainer(for: schema, configurations: [config]) } Error in extension: fault: Attempt to add read-only file at path file:///private/var/mobile/Containers/Shared/AppGroup/51431199-5919-4AE6-940C-6FE3C53EEB46/default.sqlite read/write. Adding it read-only instead. This will be a hard error in the future; you must specify the NSReadOnlyPersistentStoreOption. error: (3) access permission denied error: Encountered exception error during prepareSQL for SQL string 'SELECT TBL_NAME FROM SQLITE_MASTER WHERE TBL_NAME = 'Z_METADATA'' : access permission denied with userInfo { NSFilePath = "/private/var/mobile/Containers/Shared/AppGroup/51431199-5919-4AE6-940C-6FE3C53EEB46/default.sqlite"; NSSQLiteErrorDomain = 3; } while checking table name from store: <NSSQLiteConnection: 0x154100300> error: Store failed to load. <NSPersistentStoreDescription: 0x15402d590> (type: SQLite, url: file:///private/var/mobile/Containers/Shared/AppGroup/51431199-5919-4AE6-940C-6FE3C53EEB46/default.sqlite) with error = Error Domain=NSCocoaErrorDomain Code=256 "The file “default.sqlite” couldn’t be opened." UserInfo={NSFilePath=/private/var/mobile/Containers/Shared/AppGroup/51431199-5919-4AE6-940C-6FE3C53EEB46/default.sqlite, NSSQLiteErrorDomain=3} with userInfo { NSFilePath = "/private/var/mobile/Containers/Shared/AppGroup/51431199-5919-4AE6-940C-6FE3C53EEB46/default.sqlite"; NSSQLiteErrorDomain = 3; } Any help appreciated 🙂
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160
May ’25
iOS Action and Share Extensions disappear for users
Several users have reported that my iOS Action and Share Extensions is not visible. Now one of the TestFlight users has reported the same. Notice this user has been using the app for one year, so they know how to use it. Doing FaceTime and them sharing the screen, we have tried: Deleting app and downloading from App Store Deleting app, turning device off (call was off) and turning it on, downloading from App Store Deleting app, turning device off (call was off) and turning it on, downloading from TestFlight They can open the app, they just do not see the extensions. I would have thought it was the activation rules inside of the InfoPlist, but they are the same for all users and my other testers are not facing the issue. Device is iPhone 16 Pro, iOS 18.1 What other steps could I follow? What other information could I gather to fix this?
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319
Jan ’25
Shortcut Automation Support
I am currently facing an issue when trying to enable Shortcut support and would greatly appreciate your assistance in resolving it. I have successfully enabled Shortcut support, and I can find my app and its respective functionalities within the Shortcuts app. However, I am unable to locate my app when attempting to create an automation within Shortcuts. I would appreciate any guidance or solutions you may offer regarding this matter.
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267
Feb ’25
ManagedSettingStore limits and groups
So what's the point of being able to block unto 50 apps per ManagedSettingStore via store.application.blockedApplications (which works fine) until removing the blocked apps or clearing the store. Where the following occurs if you have a social networking group with more than 9 apps only 9 apps will go back into the group and all the others will go onto the springboard all jumbled if you end up with an empty group then tap into the group, it is removed then during the reset all apps are placed back on to the springboard
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324
Jan ’25
Error Domain=FamilyControls.FamilyControlsError Code=2 "(null)"
An error was reported when requesting permissions on devices with iOS 16.2 16.3. It is not an emulator. Through the log records, the following Error message appears Error Domain=FamilyControls.FamilyControlsError Code=3 "(null)" Error Domain=FamilyControls.FamilyControlsError Code=4 "(null)" Error Domain=FamilyControls.FamilyControlsError Code=5 "(null)" func requestScreenTime() async -> Bool { do { try await AuthorizationCenter.shared.requestAuthorization(for: .individual) return AuthorizationCenter.shared.authorizationStatus == .approved } catch { print("\(error)") return false } }
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86
May ’25
Issues with Multicast Operations using NWConnectionGroup and NWMulticastGroup
Hello, I've been encountering some challenges while working with NWConnectionGroup and NWMulticastGroup for multicast operations on iOS. I have a few doubts and issues that I would like to address: 1. NWMulticastGroup Initialization It seems that when initializing NWMulticastGroup, only one NWEndpoint can be passed, and attempting to pass multiple endpoints results in failure. Can someone confirm if this behavior is correct? 2. Interface Level Control Upon initializing NWConnectionGroup, it appears that packets are received on all interfaces without the ability to control this at the interface level. Is this correct? If not is there a way to configure NWConnectionGroup to receive packets on all interfaces? 3. Sending Behavior During the send operation, it appears that the data is sent through any one of the available interfaces, and there doesn't seem to be an option to configure it to send through all available endpoints. Is there a way to enable sending data through all available endpoints? Any insights, guidance, or solutions to these issues would be greatly appreciated. Has anyone else encountered similar problems or found workarounds for these limitations? Thank you for your assistance and support. Thanks, Harshal
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Jan ’25
Unable to locate my stickers in message app after installed my app
My sticker app was rejected when I submitted it to App Store Connect. Reason: "We were unable to locate your stickers in message app after installed your app." When I checked on an iOS18 device, this was correct. However, my stickers is visible when I dragged the half-modal(like sheetPresentationController) part. I hope what I need to do to get the stickers to display initially. My code(Xcode16.2) class StickerViewController: MSStickerBrowserViewController { var stickers = [MSSticker]() override func viewDidLoad() { super.viewDidLoad() loadStickers() } override var stickerSize: MSStickerSize { get { return .small } } func loadStickers() { var imageSetPath = "en" for index in 1...20 { var strIndex = "" strIndex = "stmp" + String(index) + imageSetPath createSticker(assetLocation: "\(strIndex)", assetDescription: "\(strIndex)") } } func createSticker(assetLocation: String, assetDescription: String) { guard let path = Bundle.main.path(forResource: assetLocation, ofType: "png") else { return } let url = URL(fileURLWithPath: path) do { let sticker = try MSSticker(contentsOfFileURL: url, localizedDescription: assetDescription) stickers.append(sticker) } catch { print(error) } } } extension StickerViewController { override func numberOfStickers(in stickerBrowserView: MSStickerBrowserView) -> Int { return stickers.count } override func stickerBrowserView(_ stickerBrowserView: MSStickerBrowserView, stickerAt index: Int) -> MSSticker { return stickers[index] } }
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May ’25