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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Will the call screening feature be available in all iOS 26 capable iPhones?
I'm pretty excited for the all new iOS 26 redesign, but what I'm most excited for is the call screening feature to avoid unwanted calls. I downloaded the developer's beta on my secondary device to report bugs, but call screening doesn't work on it even though it's turned on. I already sent a feedback report, but I'm not sure if it's just a beta bug or that my iPhone won't support it. I haven't found much info about it. It's a 2nd gen SE. Thanks.
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149
Jun ’25
AlarmKit can we automatically acknowledge the alarm or set a time period the alarm should alert for
My use case is a Repeat Timer app. The user can configure a repeating timer, say: 8 minutes with 3 sets So I would like to configure either 3 alarms (8mins, 16mins, 24mins) or a repeating alarm (8mins every 3 mins) BUT... I would like the first and second alarms to break through but only for 5 seconds for example, and then stop (so the user doesn't need to tap the screen to silence the alarm). I don't think this is possible after reading the API docs, but am asking the question anyway. Thanks for any advice or guidance here, and happy WWDC!
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108
Jun ’25
Deeplink between two standalone watchos App
I have two standalone app written for watchos (standalone). One to authenticate and one for connectivity to real-world devices. The connectivity app uses the authentication app before every action, Im testing this with two xcode projects I have created and tried different things ended up with this error. authapp://authenticate?callback=linkingapp://callback -[SPApplicationDelegate extensionConnection:openSystemURL:]:2418: URL with scheme "authapp" not supported how to get the url scheme working? Tested this in simulator and real device. info.plist and AppDelegate files are placed in both apps.
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1.1k
Feb ’25
Finder Quick Action icon rendering when using custom SF Symbol
Hey folks! I'm working on a macOS app which has a Finder Quick Action extension. It's all working fine, but I'm hitting a weird struggle with getting the icon rendering how I would like, and the docs haven't been able to help me. I want to re-use a custom SF Symbol from my app, so I've copied that from the main app's xcassets bundle to the one in the extension, and configured it for Template rendering. The icon renders in the right click menu in Finder, the Finder preview pane and the Extensions section of System Settings, but all of them render with the wrong colour in dark mode. In light mode they look fine, but in dark mode I would expect a templated icon to be rendered in white, not black. I've attached a variety of screenshots of the icons in the UI and how things are set up in Xcode (both for the symbol in the xcassets bundle, and the Info.plist) I tried reading the docs, searching Google, searching GitHub and even asking the dreaded AI, but it seems like there's not really very much information available about doing icons for Finder extensions, especially ones using a custom SF Symbol, so I would love to know if anyone here has been able to solve this in the past! Finder preview pane in light mode: Finder preview pane in dark mode: Finder quick action context menu: System Settings extension preferences: The custom symbol in my .xcassets bundle: The finder extension's Info.plist:
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138
Jun ’25
Intermittent White Screen Issue on iOS 18.1.1 for a Hybrid Shopping App
Hello everyone, I’m running an Objective-C–based hybrid (native + web) shopping application and encountering a recurring issue on devices running iOS 18.1.1: When the app launches, it only shows a white screen with the native frame visible—no web content loads. Restarting or reinstalling the app doesn’t help. In one instance, toggling Airplane Mode on and off brought the app back to normal, but this workaround isn’t consistent. There are no crash logs, so we can’t determine if it’s caused by a network error, cache conflict, or an OS-level bug. So far, we have only seen this issue on iOS 18.1.1 devices. Because our app is a shopping platform, this significantly impacts users. Questions: Could this be related to a known bug or limitation in iOS 18.1.1? Are there recommended diagnostic steps or workarounds for a hybrid app that shows a white screen without generating crash logs? Which additional details (e.g., system logs, network traces, device configurations) might help isolate the cause? Any insights or suggestions would be greatly appreciated. Thank you in advance!
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133
Feb ’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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132
Jun ’25
DeviceActivityMonitor.intervalDidEnd never getting called
I'm trying to build an app with a DeviceActivityMonitor extension that executes some code after 15 minutes. I can confirm that the extension is set up correctly and that intervalDidStart is executed, but for some reason the intervalDidEnd method never gets called. What I'm doing in both is just registering a local notification. class DeviceActivityMonitorExtension: DeviceActivityMonitor { let store = ManagedSettingsStore() override func intervalDidStart(for activity: DeviceActivityName) { createPushNotification( title: "Session activated!", body: "" ) super.intervalDidStart(for: activity) } override func intervalDidEnd(for activity: DeviceActivityName) { createPushNotification( title: "Session ended", body: "" ) super.intervalDidEnd(for: activity) } private func createPushNotification(title: String, body: String) { let content = UNMutableNotificationContent() content.title = title content.body = body // Configure the recurring date. var dateComponents = Calendar.current.dateComponents([.era, .year, .month, .day, .hour, .minute, .second], from: Date().addingTimeInterval(1.0)) dateComponents.calendar = Calendar.current dateComponents.timeZone = TimeZone.current // Create the trigger as a repeating event. let trigger = UNCalendarNotificationTrigger(dateMatching: dateComponents, repeats: false) let uuidString = UUID().uuidString let request = UNNotificationRequest(identifier: uuidString, content: content, trigger: trigger) // Schedule the request with the system. let notificationCenter = UNUserNotificationCenter.current() notificationCenter.add(request) } } And this is the method that is starting the monitoring session: @objc public static func startSession() -> String? { // Calculate start and end times let center = DeviceActivityCenter() let minutes = 15 let startDate = Date().addingTimeInterval(1) guard let endDate = Calendar.current.date(byAdding: .minute, value: minutes, to: startDate) else { return "Failed to create end date?" } // Create date components and explicitly set the calendar and timeZone let startComponents = Calendar.current.dateComponents([.era, .year, .month, .day, .hour, .minute, .second], from: startDate) let endComponents = Calendar.current.dateComponents([.era, .year, .month, .day, .hour, .minute, .second], from: endDate) // Create schedule let schedule = DeviceActivitySchedule( intervalStart: startComponents, intervalEnd: endComponents, repeats: false ) print("Now", Date()) print("Start", startDate, startComponents) print("End", endDate, endComponents) print(schedule.nextInterval) do { // Use a consistent activity name for our simple implementation let activity = DeviceActivityName("SimpleSession") try center.startMonitoring(activity, during: schedule) return nil } catch { return "Failed to start monitoring: \(error)" } } I can confirm my dates & date components make sense with the 4 print statements. Here is the output: Now 2025-02-12 04:21:32 +0000 Start 2025-02-12 04:21:33 +0000 era: 1 year: 2025 month: 2 day: 11 hour: 20 minute: 21 second: 33 isLeapMonth: false End 2025-02-12 04:36:33 +0000 era: 1 year: 2025 month: 2 day: 11 hour: 20 minute: 36 second: 33 isLeapMonth: false Optional(2025-02-12 04:21:33 +0000 to 2025-02-12 04:36:33 +0000) I get the Session activated! notification but never get the Session ended notification. Half an hour later, I've tried debugging the DeviceActivityCenter by printing out the activities property and can see that it is still there. When I try to print out the nextInterval property on the schedule object i get from calling center.schedule(for:), it returns nil. I'm running this on an iPhone 8 testing device with developer mode enabled. It has iOS 16.7.10. I'm totally lost as to how to get this to work.
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383
Feb ’25
Live Caller ID Lookup & PIRService blocking inconsistent
I've successfully started the Live Caller ID Lookup example and initialized the PIRService. I added several identities to the input.txtpb file, some with block: true and others with block: false. Here is the file but modified phone digits: identities { key: "+40790123123" value { name: "Blocking 1" cache_expiry_minutes: 7 block: true } } identities { key: "+972526111111" value { name: "Blocking 2" cache_expiry_minutes: 7 block: true } } identities { key: "+123" value { name: "Adam" cache_expiry_minutes: 8 block: false category: IDENTITY_CATEGORY_PERSON } } identities { key: "+972526111112" value { name: "Identified Business Name 1" cache_expiry_minutes: 1 block: false category: IDENTITY_CATEGORY_BUSINESS } } identities { key: "+972526111113" value { name: "Identified Business Name 2" cache_expiry_minutes: 1 block: false category: IDENTITY_CATEGORY_BUSINESS } } The main issue is that only the number marked as +40790123123 was actually blocked, while "Blocking 2" appeared as identified contacts with their assigned name displayed. Notably, the only blocked number was a foreign number with a different country code than the number being called. The other numbers belonged to the same country. Can someone clarify whether this is a bug in the example project or an issue with the data file?
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280
Mar ’25
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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123
Jun ’25
When user opened my application, it crashed immediately. [Firebase crash report CFNetwork]
When user opened my application, it crashed immediately. This is crash log message from firebase. com.apple.CFNetwork.Connection EXC_BAD_ACCESS KERN_INVALID_ADDRESS After restarting iPhone, user can use my application without crash. I cannot reproduce this crash from other device. Here are .ips crash log that I changed to .txt. crashLog-2024-12-26-182447.txt crashLog-2024-12-26-182449.000.txt crashLog-2024-12-26-182535.000.txt crashLog-2024-12-26-182535.txt Do you have any idea to fix this?
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633
Jan ’25
Family Controls App Help
Hello! I am a relatively new Apple developer and am almost done with my first app. I am implementing the Screen Time API to my app because the app is designed to help the user digitally detox and I am trying to make it so the user can select which apps they would like to monitor from a list of their apps on their phone so I am using the family activity picker but I just can't extract the data needed to track the apps. I am wondering how to do this. Thank you!
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149
Jul ’25
How can I create a AppIntent with SwiftData correctly?
I currently create a AppIntent that contains a custom AppEntity, it shows like this struct GetTimerIntent: AppIntent { static let title: LocalizedStringResource = "Get Timer" @Parameter(title: "Timer") var timer: TimerEntity func perform() async throws -> some IntentResult { .result(value: timerText(timer.entity)) } static var parameterSummary: some ParameterSummary { Summary("Get time of \(\.$timer)") } func timerText(_ timer: ETimer) -> String { // Implementation Folded } } struct TimerEntity: AppEntity { var entity: ETimer static let defaultQuery: TimerQuery = .init() static var typeDisplayRepresentation: TypeDisplayRepresentation { TypeDisplayRepresentation(name: "Timer") } var id: UUID { entity.identifier } var displayRepresentation: DisplayRepresentation { DisplayRepresentation(title: "\(entity.title)") } } To get the timers, I create a TimerQuery type to fetch them from SwiftData containers. struct TimerQuery: EntityQuery, Sendable { func entities(for identifiers: [UUID]) async throws -> [TimerEntity] { print(identifiers) let context = ModelContext(ModelMigration.sharedContainer) let descriptor = FetchDescriptor<ETimer>( predicate: #Predicate { identifiers.contains($0.identifier) }, sortBy: [.init(\.index)] ) let timers = try context.fetch(descriptor) print(timers.map(\.title)) return timers.map { TimerEntity(entity: $0) } } } Everything looks make sense since I code it. When I'm testing, the console jump No ConnectionContext found for 105553169752832 and I can't get my datas. How can I solve this issue?
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926
Jan ’25
How to provide a driving destination to CarPlay, like Calendar
If I have, say a doctor appointment in the Calendar app, and I'm leaving to go to it, the address will appear in Apple Maps on CarPlay. Forgive if I'm getting the details wrong, but I believe if I bring up the Map, it will be available to tap on, so I can quickly go there. I think it may also show up on one on the car-play screens that shows a few different panels. The point is, I really like this feature, and want to do it in my app. In my iOS app, the user can order food from a restaurant, and pick it up. I'm not ready to make this app a "quick service" app, but I want to give the user an easy to get to her location. Since I just ordered food, this means that I'll need to leave fairly quickly to go to the location. The Calendar app is able to offer a location because of scheduling, I'd like to do the same.
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123
Jun ’25
Universal Links are not working
I have an iOS app where the universal links are not working. Basically, I have double-checked the AASA file, and it's formatted correctly. It's in the right location .well-known subdirectory. I have checked other things as well. For my app, if the user has forgotten their password, they click on the Forgot Password option, which sends them an email, after which they click on a link; the link should open the iOS app, but is instead opening up the web browser. The format of the link matches the formatting in the AASA file. As well, I've checked associated domains as well. Using Postman, I can see that the AASA file is accessible. I have a feeling that the iOS app cannot fetch the AASA file, as I don't see any relevant swcd logs. My AASA file is located at: https://www.COMPANY_NAME.ca/.well-known/apple-app-site-association Please advise.
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1k
Feb ’25
Live Caller ID Lookup Implementation
Hello I'm working on Live Caller ID Lookup implementation on my own pet-project, as I understood I need to create app and extension for this app. I also created test PIR-service. I did configure serviceURL, tokenIssuerURL and userTierToken. In My app I implemented following code Task { if LiveCallerIDLookupManager.shared.status(forExtensionWithIdentifier: "some-extension") == .disabled { `//` Show an alert. print("LiveCallerIDLookupManager is disabled") } do { // Open Settings. try await LiveCallerIDLookupManager.shared.openSettings() } catch { } It does open Call settings, but I don't understand what should I do next.
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112
Jun ’25
Request Array with AppIntent
Hi everyone, i'm trying to request in a AppIntent an array of strings. But I want to give the user the chance to add more than one String. Yet, I do it so: import AppIntent struct AddHomework: AppIntent { // some Parameters @Parameter(title: "Tasks") var tasks: [String]? @Parameter(title: "New Task") //Only for the special request var input: String? private func collectTasks() async throws -> [String] { var collectedTasks: [String] = tasks ?? [] while true { if !collectedTasks.isEmpty { let addMore = try await $input.requestConfirmation(for: "Möchtest du noch eine Aufgabe hinzufügen?") if !addMore { break } } let newTask = try await $input.requestValue("Please enter your task:") collectedTasks.append(newTask) } return collectedTasks } @MainActor func perform() async throws -> some IntentResult { let finalTasks = try await collectTasks() // some more code return .result() } } But this is not working. The Shortcut is ending without requesting anything. But it is not crashing. I would thankfully for some help.
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329
Feb ’25
Live caller id lookup onboard appstore
I have been working to implement Apple's Live Caller ID feature, which requires setting up a relay server. Following Apple's guidelines, I submitted a request through the provided link to utilize Apple's relay server. However, it's been three weeks, and I have yet to receive a response. I contacted Apple Support, but they indicated that this is a technical matter beyond their scope.​ Has anyone successfully received confirmation from Apple regarding the use of their relay server for Live Caller ID? If so, could you share your experience or any advice on how to proceed? url: https://developer.apple.com/contact/request/live-caller-id-lookup/ Thank you.
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331
Mar ’25
Car play mirroring with flexy limitation and what about new Gen. of Carplay that gonna launch end of this year?
right now it looks like the app type must follow the guidelines like Messenger app, Navigate app, and Music app only. What about the Automotive app itself, What is the flexibility of it? We have an app for service cars for one brand (officially)(car users around 1m+). but we looking to merge the experience between outside the car and inside the car. Can we top up some features on the app to share some information that is a part of the car like trip calculation or car info display on the screen? or services time to notice them? And following that question can we know about the exact spot or brief from Apple car play for now and next-gen? Or can we work with your team closely as a partner? to make things happen and develop it to be a flagship product, we can share some data and talk about it with real insight.
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331
Feb ’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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112
Jun ’25