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Embedding self-built WebKit framework in Mac app
I'm trying to embed a self-built copy of the WebKit frameworks to a macOS app. Most importantly I hope to get some features to work which Safari offers, but WKWebView in macOS doesn't (getDisplayMedia, Service Workers, WebInspector). Many years ago I was successful in using a self-built WebKit copy in this Mac app, but it seems the WebKit framework got more complex since them, I guess because of WKWebView's architecture. That time I had to open the projects for the main frameworks in Xcode, select the framework bundle in the target and change the "Installation Directory" setting to the path @executable_path/../Frameworks. After building WebKit using the build script, I could use otool -L to confirm the changed installation path, which then was displayed for example as @executable_path/../Frameworks/WebCore.framework/Versions/A/WebCore I tried the same with a current WebKit build: I copied the products for WebKit.framework, WebCore.framework, JavaScriptCore.framework, WebKitLegacy.framework, WebGPU.framework and WebInspectorUI.framework to my app and added it to the "Frameworks, Libraries and Embedded Content" section in the Project's Target/General tab and selected "Embed & Sign" for each framework. In "Build Phases" I made sure that WebCore.framework and WebGPU.framework are only in the "Copy Files" phase (Destination Frameworks) and not in "Link Binary with Libraries", as WebCore is linked through the WebKit umbrella framework and WebGPU gave another error (not sure about how to deal with that framework, as in the system it's in a PrivateFrameworks subfolder). In "Build Settings" I made sure that @executable_path/../Frameworks is entered for "Runpath Search Paths" (it was already probably because of Cocoapods, together with @loader_path/../Frameworks. When I build my app, the system's WebKit version is used. Only when I add the environment variable DYLD_FRAMEWORK_PATH with value @executable_path/../Frameworks in the run scheme, the embedded self-build WebKit frameworks are used. Because of currently necessary backward compatibility my app can use the legacy WebView or WKWebView. The legacy WebView works perfectly with the embedded WebKitLegacy.framework. But if I try to open any URL in WKWebView, no content is rendered and in the console output I can see: Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::didFinishLaunching: Invalid connection identifier (web process failed to launch) Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::processDidTerminateOrFailedToLaunch: reason=4 Safe Exam Browser[21391:145678] [ProcessSuspension] 0x10c005040 - [PID=0, throttler=0x10c67d8d8] ProcessThrottler::Activity::invalidate: Ending background activity / 'WebProcess initialization' Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::shutDown: Safe Exam Browser[21391:145678] [Process] 0x7fbe89064020 - [pageProxyID=40, webPageID=41, PID=0] WebPageProxy::processDidTerminate: (pid 0), reason 4 2022-02-14 12:53:01.764074+0100 Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::processTerminated: Safe Exam Browser[21391:145678] [Loading] 0x7fbe89064020 - [pageProxyID=40, webPageID=41, PID=0] WebPageProxy::dispatchProcessDidTerminate: reason=Crash Safe Exam Browser[21391:146842] [SEBOSXWKWebViewController webViewWebContentProcessDidTerminate:<Safe_Exam_Browser.SEBOSXWKWebView: 0x7fbe88f8b1c0>] I have the impression that the web process might fail to launch because I didn't embed all necessary parts of the self-built WebKit (the product folder contains a large number of XPC, dylib and .a files). Or some additional paths have to be adjusted before building WebKit, so that the embedded frameworks/libraries are used and not the system provided ones. I also looked at the bundle of the Safari Technology Preview and can see some similarities but also differences. I would be grateful if anybody could provide me with information how to embed a self-built copy of WebKit into a macOS app. Unfortunately I didn't find any Mac open source browser using an embedded copy of WebKit to get some inspiration from.
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2.3k
Jan ’26
RCS failing on iOS 18 when VPN active
When a VPN is active, RCS messaging does not work on iOS 18. I work on an iOS VPN app, and we were very appreciative of the excludeCellularServices network flag that was released during the iOS 16 cycle. It's a great solution to ensure the VPN doesn't interfere with cellular network features from the cellular provider. Separately - As a user, I'm excited that iOS 18 includes RCS messaging. Unfortunately, RCS messaging is not working when our VPN is active (when checking on the iOS 18 release candidate). My guess is that RCS is not excluded from the VPN tunnel, even when excludeCellularServices is true. It seems like RCS should be added in this situation, as it is a cell provider service. Can RCS be added as a service that is excluded from the VPN tunnel when excludeCellularServices is true? (I've also sent this via feedback assistant, as 15094270.)
11
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2.8k
Oct ’25
Does "Locked and hidden apps" feature of iOS 18 support deep link?
Our app includes showing external web service with WebView or Safari and returning to the app with custom URL scheme or universal link. When we set "Hide and Require Face ID" feature which was available on iOS 18, neither custom URL scheme nor universal link activated the app. If we only set "Require Face ID", the deep link worked properly. Here is what we've tried: Define custom URL scheme or universal link in the app https://developer.apple.com/documentation/xcode/defining-a-custom-url-scheme-for-your-app https://developer.apple.com/documentation/xcode/supporting-universal-links-in-your-app Implement external web service with one of the following frameworks ASWebAuthenticationSession https://developer.apple.com/documentation/authenticationservices/aswebauthenticationsession/ SFSafariViewController https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller Safari WKWebView https://developer.apple.com/documentation/webkit/wkwebview On iOS 18 device, install the app and set "Hide and Require Face ID" Access external web page and tap the link which activates custom URL scheme or universal link We expected the deep link to work, but the results were: Custom URL scheme &amp;amp; ASWebAuthenticationSession/SFSafariViewController/Safari The system shows "Cannot open the page because the address is invalid" Custom URL scheme &amp;amp; WKWebView Nothing happens when tapping the link Universal link Directed to the server with associated domain file, but the system doesn't call the app which is defined in the associated domain file We tested the feature with the app built with Xcode16 beta 6, and the device with iOS 18 Seed 8(22A5350a). Does hide app feature support custom URL scheme and universal link?
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1.8k
Jun ’25
Can LiveActivityIntent open the app when tapping a Live Activity button on Lock Screen & Dynamic Island expanded view?
I’m implementing a Live Activity that shows some text and a button. When the user taps the button, I want to open the host app. What I’ve done so far: Implemented a LiveActivityIntent to handle the button tap. The intent is triggered successfully. However, the app does not open by using deep link/universal app link. From what I can tell, LiveActivityIntent seems limited to system/background execution and doesn’t bring the app to the foreground. Questions: Is it possible for a LiveActivityIntent to open the app? Is this behavior a documented/intentional limitation? If not supported, is using a Universal Link or deep link the recommended solution for opening the app from a Live Activity button? Any official clarification or recommended best practice would be helpful.
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195
Jan ’26
WeatherKit suddenly returning JWT errors - no changes
All of my apps stopped working with WeatherKit this morning. They all return an "Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2" error. I am certain that the WeatherKit capability added (in project) and enabled as a Capability & App Service (on developer portal for the identifier). All other iCloud features of my apps are working as expected. I have also done all the normal troubleshooting using codesign / security cms, etc. to verify entitlements. I created the following simple project to verify the integration. import WeatherKit import CoreLocation struct ContentView: View { @State private var temp: Measurement<UnitTemperature>? = nil var body: some View { VStack { if let t = temp { Text("\(t.value.rounded())°\(t.unit.symbol)") } else { Text("Fetching…") .task { let service = WeatherService() do { let location = CLLocation(latitude: 50.318668, longitude: -114.917710) let weather = try await service.weather(for: location, including: .current) temp = weather.temperature } catch { print("Error:", error) } } } } } } Any ideas what may be happening?
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249
Jun ’25
[macOS] AppTransaction questions (internet connection requirement)
Hello, I hope to find out more about how AppTransaction works on macOS, specifically about its internet connection requirements: if I use this to validate that the app is a legit purchase from the Mac App Store, I would not want it to have an always-on requirement just to validate. Does AppTransaction require the user to always be online for AppTransaction.shared ? When an app is downloaded from the Mac App Store, is the data needed for AppTransaction automatically embedded during that download, or is that data downloaded upon first launch of the app, therefore requiring an internet connection at launch time? Once the data/receipt has been downloaded by AppTransaction, is it cached until the app's next update, or is it cleared at some time during the version's life and needs to be re-downloaded, therefore requiring an internet connection at launch? Where is that receipt/data stored? Also, if you don't mind me sneaking in this non-related but sort of related question, in terms of receipt validation: Does macOS Sequoia's MAC address rotation feature affect receipt validation in any way when using IOKit? Thank you kindly, – Matthias
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652
Apr ’25
Wi-Fi aware in the app's background execution mode
I couldn't find any mention in the Wi-Fi Aware documentation https://developer.apple.com/documentation/WiFiAware about the possibilities of the Wi-Fi Aware connection during the app working in the background execution mode (background state). Does the framework keep the connection alive when the app goes to the background state? Is there anything similar concept to CoreBluetooth state restoration available in the case of the Wi-Fi Aware framework?
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328
Oct ’25
Transaction ID Misassociation in IAP Subscription API
Dear Apple Support Team, Hello! I am currently developing the in-app subscription functionality using Apple IAP API and have encountered a serious technical issue while processing subscription data. I would like to report this issue to you. Issue Description: When calling the subscription API endpoint, the same OriginalTransactionId returns inconsistent results. Specifically, a particular transaction ID (let's call it TransactionId_A) should belong to the subscription order with OriginalTransactionId_A, but it is currently incorrectly associated with OriginalTransactionId_B. This issue severely affects our ability to accurately manage and process subscription data. Here are the relevant log details for your reference: API Endpoint Requested: https://api.storekit.itunes.apple.com/inApps/v1/subscriptions/{TransactionId_A} (Note: The link is a placeholder for the actual API endpoint.) Log Information on February 21, 2025, at 09:40:09: { "AppAccountToken": "{AppAccountToken}", "BundleId": "{BundleId}", "Currency": "CNY", "Environment": "Production", "ExpiresDate": {ExpiresDate}, "InAppOwnershipType": "PURCHASED", "IsUpgraded": false, "OfferDiscountType": "", "OfferIdentifier": "", "OfferType": 0, "OriginalPurchaseDate": {OriginalPurchaseDate}, "OriginalTransactionId": "{OriginalTransactionId_A}", "Price": {Price}, "ProductId": "{ProductId}", "PurchaseDate": {PurchaseDate}, "Quantity": 1, "RevocationDate": 0, "RevocationReason": 0, "SignedDate": {SignedDate}, "Storefront": "CHN", "StorefrontId": {StorefrontId}, "SubscriptionGroupIdentifier": "{SubscriptionGroupIdentifier}", "TransactionId": "{TransactionId_A}", "TransactionReason": "PURCHASE", "Type": "Auto-Renewable Subscription", "WebOrderLineItemId": "{WebOrderLineItemId}" } Log Information on March 21, 2025, at 09:38:49: { "AppAccountToken": "{AppAccountToken}", "BundleId": "{BundleId}", "Currency": "CNY", "Environment": "Production", "ExpiresDate": {ExpiresDate}, "InAppOwnershipType": "PURCHASED", "IsUpgraded": false, "OfferDiscountType": "", "OfferIdentifier": "", "OfferType": 0, "OriginalPurchaseDate": {OriginalPurchaseDate}, "OriginalTransactionId": "{OriginalTransactionId_B}", "Price": {Price}, "ProductId": "{ProductId}", "PurchaseDate": {PurchaseDate}, "Quantity": 1, "RevocationDate": 0, "RevocationReason": 0, "SignedDate": {SignedDate}, "Storefront": "CHN", "StorefrontId": {StorefrontId}, "SubscriptionGroupIdentifier": "{SubscriptionGroupIdentifier}", "TransactionId": "{TransactionId_A}", "TransactionReason": "PURCHASE", "Type": "Auto-Renewable Subscription", "WebOrderLineItemId": "{WebOrderLineItemId}" } From the above logs, it is evident that the same transaction (TransactionId_A) returns different OriginalTransactionId values at different times, which is clearly not expected and severely impacts our ability to correctly process and manage subscription data. I hope you can address and investigate this issue as soon as possible. If you need any further information or assistance, please feel free to contact me. Thank you for your support! Best regards!
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1.1k
Apr ’25
@IntentParameterDependency Always Returns nil in iOS 18
The following code works perfectly fine in iOS 17, where I can retrieve the desired dependency value through @IntentParameterDependency as expected. However, in iOS 18, addTransaction always returns nil. struct CategoryEntityQuery: EntityStringQuery { @Dependency private var persistentController: PersistentController @IntentParameterDependency<AddTransactionIntent>( \.$categoryType ) var addTransaction func entities(matching string: String) async throws -> [CategoryEnitity] { guard let addTransaction else { return [] } // ... } func entities(for identifiers: [CategoryEnitity.ID]) async throws -> [CategoryEnitity] { guard let addTransaction else { return [] } // ... } func suggestedEntities() async throws -> [CategoryEnitity] { guard let addTransaction else { return [] } // ... } } Has anyone else encountered the same issue? Any insights or potential workarounds would be greatly appreciated. iOS: 18.0 (22A3354) Xcode 16.0 (16A242d)
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950
Jan ’26
iOS 26 iPhone won't charge and keeps restarting.
I have an iPhone 14 Pro. I downloaded the iOS 26 beta and had a SERIOUS error, rendering the phone unusable. I charged it to 60% and kept it plugged in while updating. While updating, I restarted several times at the Apple logo, then at the Welcome screen, and it had quite a few bugs with low battery warnings. When I turned it on, I noticed I had 1% (I thought it was strange). When it was plugged in, it wouldn't charge; it only had 1% left, and it also restarted every 2 minutes. Off-plugged, it did exactly the same thing. In the end, I had to go back to iOS 18.5; I had no problems with this version.
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1.2k
Jun ’25
com.apple.hiservices-xpcservice (Not Responding)
Previously discussed in beta:https://forums.developer.apple.com/message/330295This process stops responding every day it seems, I'm running 10.14.3 (18D109)When the process hangs, its Open Files and Ports include the following:txt /Library/Preferences/Logging/.plist-cache.ZP6RP0OT txt /private/var/db/timezone/tz/2018i.1.0/icutz/icutz44l.dat txt /usr/share/icu/icudt62l.dat txt /private/var/folders/35/dgpwsg457w17gs77hssnrbnw0000gn/0/com.apple.LaunchServices-231-v2.csstoreThose are not open when the service is running (before it hangs)Would like to know how frequently this hangs for everyone else and get steps to troubleshoot if possible.
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40k
Jan ’26
SwiftData crash on fetch
I have a strange crash which I have problems understanding. It only happens on a few devices, after a ModelContainer migration, and it doesn't seem to crash on the migration itself. The fetch is done in onAppear, and shouldn't necessarily result in a crash, as it is an optional try: let request = FetchDescriptor<Rifle>() let data = try? modelContext.fetch(request) if let data, !data.isEmpty { rifle = data.first(where: { $0.uuid.uuidString == settings.selectedRifleId }) ?? data.first! } When I get logs from users, there seems to be an error in encoding? Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x000000018e8bfd78 Termination Reason: SIGNAL 5 Trace/BPT trap: 5 Terminating Process: exc handler [71687] Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libswiftCore.dylib 0x18e8bfd78 _assertionFailure(_:_:file:line:flags:) + 264 1 SwiftData 0x24e18b480 0x24e14c000 + 259200 2 SwiftData 0x24e193968 0x24e14c000 + 293224 3 SwiftData 0x24e195a78 0x24e14c000 + 301688 4 libswiftCore.dylib 0x18e8e4084 _KeyedEncodingContainerBox.encodeNil<A>(forKey:) + 352 5 libswiftCore.dylib 0x18e8d79f0 KeyedEncodingContainer.encodeNil(forKey:) + 64 6 SwiftData 0x24e19f09c 0x24e14c000 + 340124 7 SwiftData 0x24e1a3dec 0x24e14c000 + 359916 8 libswiftCore.dylib 0x18ec10be8 dispatch thunk of Encodable.encode(to:) + 32 9 SwiftData 0x24e1cd500 0x24e14c000 + 529664 10 SwiftData 0x24e1cd0c8 0x24e14c000 + 528584 11 SwiftData 0x24e1da960 0x24e14c000 + 584032 12 SwiftData 0x24e1ee2ec 0x24e14c000 + 664300 13 SwiftData 0x24e1d97d8 0x24e14c000 + 579544 14 SwiftData 0x24e1eada0 0x24e14c000 + 650656 15 SwiftData 0x24e1d989c 0x24e14c000 + 579740 16 SwiftData 0x24e1eee78 0x24e14c000 + 667256 17 Impact 0x1027403bc 0x10268c000 + 738236
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852
Jun ’25
How to mount custom FSKit-based file system in Finder?
Hi, I'm working with the new FSKit framework and have successfully implemented a custom file system using FSUnaryFileSystem. Mounting the file system via Terminal works perfectly — I can create, delete, and browse files and directories as expected. Since /Volumes is protected on modern macOS systems, I cannot mount my file system there directly. Instead, I mount it into a different writable directory (e.g., /tmp/MyFS) and then create a symbolic link to it in a user-visible location such as ~/Downloads/MyFS. Finder does see the symlink and displays it with a "Volume" icon, but clicking it results in an error — it cannot be opened. It seems like Finder does not treat the symlinked mount as a fully functional volume. Is there a proper way to register or announce a FSKit-mounted file system so that Finder lists it as a real volume and allows access to it? Are there additional steps (APIs, notifications, entitlements, or Info.plist keys) required to integrate with Finder? Any insight would be greatly appreciated. Thanks!
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358
Jun ’25
Stopping and Resuming Background Location Activity with CLLocationUpdates and CLBackgroundActivitySession
Hello, This is my first post in the forums, and I'm still learning my way with iOS Development and Swift. My apologies if the formatting is not correct, or If I'm making any mistakes. I'm currently trying to implement an iOS App where the device needs to share the location with my server via an API call. The use case is as follows: the server expects location updates to determine if a device is inside/outside a geofence. If the device is stationary, no locations need to be sent. If the device begins moving, regardless of whether the app is in foreground, background, or terminated, the app should resume posting locations to the server. I've decided to use the CLLocationUpdate.liveUpdates() stream, together with CLBackgroundActivitySession(). However, I have not been able to achieve the behavior successfully. My app either maintains the blue CLActivitySession indicator active, regardless of whether the phone is stationary or not, or kills the Indicator (and the background capability) and does not restore it when moving again. Below I've attached my latest code snippet (the indicator disappears and does not come back). // This method is called in the didFinishLaunchingWithOptions func startLocationUpdates(precise: Bool) { // Show the location permission pop up requestAuthorization() // Stop any previous sessions stopLocationUpdates() Task { do { // If we have the right authorization, we will launch the updates in the background // using CLBackgroundActivitySession if self.manager.authorizationStatus == .authorizedAlways { self.backgroundActivity = true } else { self.backgroundActivity = false self.backgroundSession?.invalidate() } // We will start collecting live location updates for try await update in CLLocationUpdate.liveUpdates() { // Handle deprecation let stationary = if #available(iOS 18.0, *) { update.stationary } else { update.isStationary } // If the update is identified as stationary, we will skip this update // and turn off background location updates if stationary { self.backgroundSession?.invalidate() continue } // if background activity is enabled, we restore the Background Activity Session if backgroundActivity == true { self.backgroundSession = CLBackgroundActivitySession() } guard let location = update.location else { continue } // Do POST with location to server } } catch { print("Could not start location updates") } } } I'm not sure why the code does not work as expected, and I believe I may be misunderstanding how the libraries Work. My understanding is that the liveUpdates stream is capable of emitting values, even if the app has gone to the background/terminated, thus why I'm trying to stop/resume the Background Activity using the "stationary" or "isStationary" attribute coming from the update. Is the behavior I'm trying to achieve possible? If so, I'm I using the right libraries for it? Is my implementation correct? And If not, what would be the recommended approach? Regards
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188
Dec ’25
Does BGAppRefreshTask Run After a User Force-Quits the App? Seeking Official Clarification
I’m looking for an authoritative answer on how BGAppRefreshTask behaves after a user force-quits an app (swipes it away in the App Switcher). My app relies on early-morning background refresh to prepare and schedule notifications based on user-defined thresholds and weather forecasts. Behavior across devices seems inconsistent, however: sometimes a scheduled background refresh still runs, and other times it appears completely blocked. Apple’s documentation doesn’t clearly state what should happen, and developer discussions conflict. Could someone from Apple please clarify: Will a previously scheduled BGAppRefreshTask run after the user force-quits the app? If not, is there a recommended alternative for time-sensitive updates that must schedule user alerts? What is the expected system behavior regarding the predictability of background refresh after a force-quit? A definitive answer would help ensure the app aligns with intended system behavior. Thanks!
7
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451
Dec ’25
Embedding self-built WebKit framework in Mac app
I'm trying to embed a self-built copy of the WebKit frameworks to a macOS app. Most importantly I hope to get some features to work which Safari offers, but WKWebView in macOS doesn't (getDisplayMedia, Service Workers, WebInspector). Many years ago I was successful in using a self-built WebKit copy in this Mac app, but it seems the WebKit framework got more complex since them, I guess because of WKWebView's architecture. That time I had to open the projects for the main frameworks in Xcode, select the framework bundle in the target and change the "Installation Directory" setting to the path @executable_path/../Frameworks. After building WebKit using the build script, I could use otool -L to confirm the changed installation path, which then was displayed for example as @executable_path/../Frameworks/WebCore.framework/Versions/A/WebCore I tried the same with a current WebKit build: I copied the products for WebKit.framework, WebCore.framework, JavaScriptCore.framework, WebKitLegacy.framework, WebGPU.framework and WebInspectorUI.framework to my app and added it to the "Frameworks, Libraries and Embedded Content" section in the Project's Target/General tab and selected "Embed & Sign" for each framework. In "Build Phases" I made sure that WebCore.framework and WebGPU.framework are only in the "Copy Files" phase (Destination Frameworks) and not in "Link Binary with Libraries", as WebCore is linked through the WebKit umbrella framework and WebGPU gave another error (not sure about how to deal with that framework, as in the system it's in a PrivateFrameworks subfolder). In "Build Settings" I made sure that @executable_path/../Frameworks is entered for "Runpath Search Paths" (it was already probably because of Cocoapods, together with @loader_path/../Frameworks. When I build my app, the system's WebKit version is used. Only when I add the environment variable DYLD_FRAMEWORK_PATH with value @executable_path/../Frameworks in the run scheme, the embedded self-build WebKit frameworks are used. Because of currently necessary backward compatibility my app can use the legacy WebView or WKWebView. The legacy WebView works perfectly with the embedded WebKitLegacy.framework. But if I try to open any URL in WKWebView, no content is rendered and in the console output I can see: Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::didFinishLaunching: Invalid connection identifier (web process failed to launch) Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::processDidTerminateOrFailedToLaunch: reason=4 Safe Exam Browser[21391:145678] [ProcessSuspension] 0x10c005040 - [PID=0, throttler=0x10c67d8d8] ProcessThrottler::Activity::invalidate: Ending background activity / 'WebProcess initialization' Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::shutDown: Safe Exam Browser[21391:145678] [Process] 0x7fbe89064020 - [pageProxyID=40, webPageID=41, PID=0] WebPageProxy::processDidTerminate: (pid 0), reason 4 2022-02-14 12:53:01.764074+0100 Safe Exam Browser[21391:145678] [Process] 0x10c67d760 - [PID=0] WebProcessProxy::processTerminated: Safe Exam Browser[21391:145678] [Loading] 0x7fbe89064020 - [pageProxyID=40, webPageID=41, PID=0] WebPageProxy::dispatchProcessDidTerminate: reason=Crash Safe Exam Browser[21391:146842] [SEBOSXWKWebViewController webViewWebContentProcessDidTerminate:<Safe_Exam_Browser.SEBOSXWKWebView: 0x7fbe88f8b1c0>] I have the impression that the web process might fail to launch because I didn't embed all necessary parts of the self-built WebKit (the product folder contains a large number of XPC, dylib and .a files). Or some additional paths have to be adjusted before building WebKit, so that the embedded frameworks/libraries are used and not the system provided ones. I also looked at the bundle of the Safari Technology Preview and can see some similarities but also differences. I would be grateful if anybody could provide me with information how to embed a self-built copy of WebKit into a macOS app. Unfortunately I didn't find any Mac open source browser using an embedded copy of WebKit to get some inspiration from.
Replies
6
Boosts
1
Views
2.3k
Activity
Jan ’26
RCS failing on iOS 18 when VPN active
When a VPN is active, RCS messaging does not work on iOS 18. I work on an iOS VPN app, and we were very appreciative of the excludeCellularServices network flag that was released during the iOS 16 cycle. It's a great solution to ensure the VPN doesn't interfere with cellular network features from the cellular provider. Separately - As a user, I'm excited that iOS 18 includes RCS messaging. Unfortunately, RCS messaging is not working when our VPN is active (when checking on the iOS 18 release candidate). My guess is that RCS is not excluded from the VPN tunnel, even when excludeCellularServices is true. It seems like RCS should be added in this situation, as it is a cell provider service. Can RCS be added as a service that is excluded from the VPN tunnel when excludeCellularServices is true? (I've also sent this via feedback assistant, as 15094270.)
Replies
11
Boosts
4
Views
2.8k
Activity
Oct ’25
Does "Locked and hidden apps" feature of iOS 18 support deep link?
Our app includes showing external web service with WebView or Safari and returning to the app with custom URL scheme or universal link. When we set "Hide and Require Face ID" feature which was available on iOS 18, neither custom URL scheme nor universal link activated the app. If we only set "Require Face ID", the deep link worked properly. Here is what we've tried: Define custom URL scheme or universal link in the app https://developer.apple.com/documentation/xcode/defining-a-custom-url-scheme-for-your-app https://developer.apple.com/documentation/xcode/supporting-universal-links-in-your-app Implement external web service with one of the following frameworks ASWebAuthenticationSession https://developer.apple.com/documentation/authenticationservices/aswebauthenticationsession/ SFSafariViewController https://developer.apple.com/documentation/safariservices/sfsafariviewcontroller Safari WKWebView https://developer.apple.com/documentation/webkit/wkwebview On iOS 18 device, install the app and set "Hide and Require Face ID" Access external web page and tap the link which activates custom URL scheme or universal link We expected the deep link to work, but the results were: Custom URL scheme &amp;amp; ASWebAuthenticationSession/SFSafariViewController/Safari The system shows "Cannot open the page because the address is invalid" Custom URL scheme &amp;amp; WKWebView Nothing happens when tapping the link Universal link Directed to the server with associated domain file, but the system doesn't call the app which is defined in the associated domain file We tested the feature with the app built with Xcode16 beta 6, and the device with iOS 18 Seed 8(22A5350a). Does hide app feature support custom URL scheme and universal link?
Replies
3
Boosts
4
Views
1.8k
Activity
Jun ’25
iOS 26 can no longer report calls using Unwanted Communication Extension
Hi, On iOS 26 beta, calls can no longer be reported by swiping left on a call. This is unfortunately a breaking change. I have submitted a report on this on June with Feedback Assistant: FB17893517 I hope it will get some more exposure by posting here.
Replies
2
Boosts
4
Views
273
Activity
Aug ’25
Can LiveActivityIntent open the app when tapping a Live Activity button on Lock Screen & Dynamic Island expanded view?
I’m implementing a Live Activity that shows some text and a button. When the user taps the button, I want to open the host app. What I’ve done so far: Implemented a LiveActivityIntent to handle the button tap. The intent is triggered successfully. However, the app does not open by using deep link/universal app link. From what I can tell, LiveActivityIntent seems limited to system/background execution and doesn’t bring the app to the foreground. Questions: Is it possible for a LiveActivityIntent to open the app? Is this behavior a documented/intentional limitation? If not supported, is using a Universal Link or deep link the recommended solution for opening the app from a Live Activity button? Any official clarification or recommended best practice would be helpful.
Replies
3
Boosts
0
Views
195
Activity
Jan ’26
WeatherKit suddenly returning JWT errors - no changes
All of my apps stopped working with WeatherKit this morning. They all return an "Error Domain=WeatherDaemon.WDSJWTAuthenticatorServiceListener.Errors Code=2" error. I am certain that the WeatherKit capability added (in project) and enabled as a Capability & App Service (on developer portal for the identifier). All other iCloud features of my apps are working as expected. I have also done all the normal troubleshooting using codesign / security cms, etc. to verify entitlements. I created the following simple project to verify the integration. import WeatherKit import CoreLocation struct ContentView: View { @State private var temp: Measurement<UnitTemperature>? = nil var body: some View { VStack { if let t = temp { Text("\(t.value.rounded())°\(t.unit.symbol)") } else { Text("Fetching…") .task { let service = WeatherService() do { let location = CLLocation(latitude: 50.318668, longitude: -114.917710) let weather = try await service.weather(for: location, including: .current) temp = weather.temperature } catch { print("Error:", error) } } } } } } Any ideas what may be happening?
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8
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4
Views
249
Activity
Jun ’25
*.ips CrashReport not always available when dext crashes
While developing our driver, we've noticed that the *.ips report that contains the stacktrace of the crash is not always generated. I'm wondering why this report may not get generated, or if there's anything specific to do to guarantee it gets generated.
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1
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3
Views
181
Activity
Oct ’25
[macOS] AppTransaction questions (internet connection requirement)
Hello, I hope to find out more about how AppTransaction works on macOS, specifically about its internet connection requirements: if I use this to validate that the app is a legit purchase from the Mac App Store, I would not want it to have an always-on requirement just to validate. Does AppTransaction require the user to always be online for AppTransaction.shared ? When an app is downloaded from the Mac App Store, is the data needed for AppTransaction automatically embedded during that download, or is that data downloaded upon first launch of the app, therefore requiring an internet connection at launch time? Once the data/receipt has been downloaded by AppTransaction, is it cached until the app's next update, or is it cleared at some time during the version's life and needs to be re-downloaded, therefore requiring an internet connection at launch? Where is that receipt/data stored? Also, if you don't mind me sneaking in this non-related but sort of related question, in terms of receipt validation: Does macOS Sequoia's MAC address rotation feature affect receipt validation in any way when using IOKit? Thank you kindly, – Matthias
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2
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4
Views
652
Activity
Apr ’25
Wi-Fi aware in the app's background execution mode
I couldn't find any mention in the Wi-Fi Aware documentation https://developer.apple.com/documentation/WiFiAware about the possibilities of the Wi-Fi Aware connection during the app working in the background execution mode (background state). Does the framework keep the connection alive when the app goes to the background state? Is there anything similar concept to CoreBluetooth state restoration available in the case of the Wi-Fi Aware framework?
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3
Boosts
3
Views
328
Activity
Oct ’25
Transaction ID Misassociation in IAP Subscription API
Dear Apple Support Team, Hello! I am currently developing the in-app subscription functionality using Apple IAP API and have encountered a serious technical issue while processing subscription data. I would like to report this issue to you. Issue Description: When calling the subscription API endpoint, the same OriginalTransactionId returns inconsistent results. Specifically, a particular transaction ID (let's call it TransactionId_A) should belong to the subscription order with OriginalTransactionId_A, but it is currently incorrectly associated with OriginalTransactionId_B. This issue severely affects our ability to accurately manage and process subscription data. Here are the relevant log details for your reference: API Endpoint Requested: https://api.storekit.itunes.apple.com/inApps/v1/subscriptions/{TransactionId_A} (Note: The link is a placeholder for the actual API endpoint.) Log Information on February 21, 2025, at 09:40:09: { "AppAccountToken": "{AppAccountToken}", "BundleId": "{BundleId}", "Currency": "CNY", "Environment": "Production", "ExpiresDate": {ExpiresDate}, "InAppOwnershipType": "PURCHASED", "IsUpgraded": false, "OfferDiscountType": "", "OfferIdentifier": "", "OfferType": 0, "OriginalPurchaseDate": {OriginalPurchaseDate}, "OriginalTransactionId": "{OriginalTransactionId_A}", "Price": {Price}, "ProductId": "{ProductId}", "PurchaseDate": {PurchaseDate}, "Quantity": 1, "RevocationDate": 0, "RevocationReason": 0, "SignedDate": {SignedDate}, "Storefront": "CHN", "StorefrontId": {StorefrontId}, "SubscriptionGroupIdentifier": "{SubscriptionGroupIdentifier}", "TransactionId": "{TransactionId_A}", "TransactionReason": "PURCHASE", "Type": "Auto-Renewable Subscription", "WebOrderLineItemId": "{WebOrderLineItemId}" } Log Information on March 21, 2025, at 09:38:49: { "AppAccountToken": "{AppAccountToken}", "BundleId": "{BundleId}", "Currency": "CNY", "Environment": "Production", "ExpiresDate": {ExpiresDate}, "InAppOwnershipType": "PURCHASED", "IsUpgraded": false, "OfferDiscountType": "", "OfferIdentifier": "", "OfferType": 0, "OriginalPurchaseDate": {OriginalPurchaseDate}, "OriginalTransactionId": "{OriginalTransactionId_B}", "Price": {Price}, "ProductId": "{ProductId}", "PurchaseDate": {PurchaseDate}, "Quantity": 1, "RevocationDate": 0, "RevocationReason": 0, "SignedDate": {SignedDate}, "Storefront": "CHN", "StorefrontId": {StorefrontId}, "SubscriptionGroupIdentifier": "{SubscriptionGroupIdentifier}", "TransactionId": "{TransactionId_A}", "TransactionReason": "PURCHASE", "Type": "Auto-Renewable Subscription", "WebOrderLineItemId": "{WebOrderLineItemId}" } From the above logs, it is evident that the same transaction (TransactionId_A) returns different OriginalTransactionId values at different times, which is clearly not expected and severely impacts our ability to correctly process and manage subscription data. I hope you can address and investigate this issue as soon as possible. If you need any further information or assistance, please feel free to contact me. Thank you for your support! Best regards!
Replies
6
Boosts
4
Views
1.1k
Activity
Apr ’25
@IntentParameterDependency Always Returns nil in iOS 18
The following code works perfectly fine in iOS 17, where I can retrieve the desired dependency value through @IntentParameterDependency as expected. However, in iOS 18, addTransaction always returns nil. struct CategoryEntityQuery: EntityStringQuery { @Dependency private var persistentController: PersistentController @IntentParameterDependency<AddTransactionIntent>( \.$categoryType ) var addTransaction func entities(matching string: String) async throws -> [CategoryEnitity] { guard let addTransaction else { return [] } // ... } func entities(for identifiers: [CategoryEnitity.ID]) async throws -> [CategoryEnitity] { guard let addTransaction else { return [] } // ... } func suggestedEntities() async throws -> [CategoryEnitity] { guard let addTransaction else { return [] } // ... } } Has anyone else encountered the same issue? Any insights or potential workarounds would be greatly appreciated. iOS: 18.0 (22A3354) Xcode 16.0 (16A242d)
Replies
4
Boosts
3
Views
950
Activity
Jan ’26
iOS 26 update error
Hello. I have a problem with update check ! Say “ error to Check update” update section on my iPhone 16 pro. what Is the solution to fix?
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6
Boosts
3
Views
865
Activity
Jun ’25
I can’t log out of the beta test iOS26
when I go to software and update it says can’t check for updateS.
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2
Boosts
3
Views
188
Activity
Jun ’25
iOS 26 iPhone won't charge and keeps restarting.
I have an iPhone 14 Pro. I downloaded the iOS 26 beta and had a SERIOUS error, rendering the phone unusable. I charged it to 60% and kept it plugged in while updating. While updating, I restarted several times at the Apple logo, then at the Welcome screen, and it had quite a few bugs with low battery warnings. When I turned it on, I noticed I had 1% (I thought it was strange). When it was plugged in, it wouldn't charge; it only had 1% left, and it also restarted every 2 minutes. Off-plugged, it did exactly the same thing. In the end, I had to go back to iOS 18.5; I had no problems with this version.
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4
Boosts
3
Views
1.2k
Activity
Jun ’25
com.apple.hiservices-xpcservice (Not Responding)
Previously discussed in beta:https://forums.developer.apple.com/message/330295This process stops responding every day it seems, I'm running 10.14.3 (18D109)When the process hangs, its Open Files and Ports include the following:txt /Library/Preferences/Logging/.plist-cache.ZP6RP0OT txt /private/var/db/timezone/tz/2018i.1.0/icutz/icutz44l.dat txt /usr/share/icu/icudt62l.dat txt /private/var/folders/35/dgpwsg457w17gs77hssnrbnw0000gn/0/com.apple.LaunchServices-231-v2.csstoreThose are not open when the service is running (before it hangs)Would like to know how frequently this hangs for everyone else and get steps to troubleshoot if possible.
Replies
21
Boosts
2
Views
40k
Activity
Jan ’26
SwiftData crash on fetch
I have a strange crash which I have problems understanding. It only happens on a few devices, after a ModelContainer migration, and it doesn't seem to crash on the migration itself. The fetch is done in onAppear, and shouldn't necessarily result in a crash, as it is an optional try: let request = FetchDescriptor<Rifle>() let data = try? modelContext.fetch(request) if let data, !data.isEmpty { rifle = data.first(where: { $0.uuid.uuidString == settings.selectedRifleId }) ?? data.first! } When I get logs from users, there seems to be an error in encoding? Exception Type: EXC_BREAKPOINT (SIGTRAP) Exception Codes: 0x0000000000000001, 0x000000018e8bfd78 Termination Reason: SIGNAL 5 Trace/BPT trap: 5 Terminating Process: exc handler [71687] Triggered by Thread: 0 Thread 0 name: Dispatch queue: com.apple.main-thread Thread 0 Crashed: 0 libswiftCore.dylib 0x18e8bfd78 _assertionFailure(_:_:file:line:flags:) + 264 1 SwiftData 0x24e18b480 0x24e14c000 + 259200 2 SwiftData 0x24e193968 0x24e14c000 + 293224 3 SwiftData 0x24e195a78 0x24e14c000 + 301688 4 libswiftCore.dylib 0x18e8e4084 _KeyedEncodingContainerBox.encodeNil<A>(forKey:) + 352 5 libswiftCore.dylib 0x18e8d79f0 KeyedEncodingContainer.encodeNil(forKey:) + 64 6 SwiftData 0x24e19f09c 0x24e14c000 + 340124 7 SwiftData 0x24e1a3dec 0x24e14c000 + 359916 8 libswiftCore.dylib 0x18ec10be8 dispatch thunk of Encodable.encode(to:) + 32 9 SwiftData 0x24e1cd500 0x24e14c000 + 529664 10 SwiftData 0x24e1cd0c8 0x24e14c000 + 528584 11 SwiftData 0x24e1da960 0x24e14c000 + 584032 12 SwiftData 0x24e1ee2ec 0x24e14c000 + 664300 13 SwiftData 0x24e1d97d8 0x24e14c000 + 579544 14 SwiftData 0x24e1eada0 0x24e14c000 + 650656 15 SwiftData 0x24e1d989c 0x24e14c000 + 579740 16 SwiftData 0x24e1eee78 0x24e14c000 + 667256 17 Impact 0x1027403bc 0x10268c000 + 738236
Replies
9
Boosts
3
Views
852
Activity
Jun ’25
Testing DeclaredAgeRange APIs
I'm reading the "Testing Age Assurance in Sandbox" doc, but I couldn't figure out the step: 2. Tap Sandbox Testing from the main menu Where is the "main menu"?
Replies
4
Boosts
1
Views
403
Activity
Jan ’26
How to mount custom FSKit-based file system in Finder?
Hi, I'm working with the new FSKit framework and have successfully implemented a custom file system using FSUnaryFileSystem. Mounting the file system via Terminal works perfectly — I can create, delete, and browse files and directories as expected. Since /Volumes is protected on modern macOS systems, I cannot mount my file system there directly. Instead, I mount it into a different writable directory (e.g., /tmp/MyFS) and then create a symbolic link to it in a user-visible location such as ~/Downloads/MyFS. Finder does see the symlink and displays it with a "Volume" icon, but clicking it results in an error — it cannot be opened. It seems like Finder does not treat the symlinked mount as a fully functional volume. Is there a proper way to register or announce a FSKit-mounted file system so that Finder lists it as a real volume and allows access to it? Are there additional steps (APIs, notifications, entitlements, or Info.plist keys) required to integrate with Finder? Any insight would be greatly appreciated. Thanks!
Replies
4
Boosts
3
Views
358
Activity
Jun ’25
Stopping and Resuming Background Location Activity with CLLocationUpdates and CLBackgroundActivitySession
Hello, This is my first post in the forums, and I'm still learning my way with iOS Development and Swift. My apologies if the formatting is not correct, or If I'm making any mistakes. I'm currently trying to implement an iOS App where the device needs to share the location with my server via an API call. The use case is as follows: the server expects location updates to determine if a device is inside/outside a geofence. If the device is stationary, no locations need to be sent. If the device begins moving, regardless of whether the app is in foreground, background, or terminated, the app should resume posting locations to the server. I've decided to use the CLLocationUpdate.liveUpdates() stream, together with CLBackgroundActivitySession(). However, I have not been able to achieve the behavior successfully. My app either maintains the blue CLActivitySession indicator active, regardless of whether the phone is stationary or not, or kills the Indicator (and the background capability) and does not restore it when moving again. Below I've attached my latest code snippet (the indicator disappears and does not come back). // This method is called in the didFinishLaunchingWithOptions func startLocationUpdates(precise: Bool) { // Show the location permission pop up requestAuthorization() // Stop any previous sessions stopLocationUpdates() Task { do { // If we have the right authorization, we will launch the updates in the background // using CLBackgroundActivitySession if self.manager.authorizationStatus == .authorizedAlways { self.backgroundActivity = true } else { self.backgroundActivity = false self.backgroundSession?.invalidate() } // We will start collecting live location updates for try await update in CLLocationUpdate.liveUpdates() { // Handle deprecation let stationary = if #available(iOS 18.0, *) { update.stationary } else { update.isStationary } // If the update is identified as stationary, we will skip this update // and turn off background location updates if stationary { self.backgroundSession?.invalidate() continue } // if background activity is enabled, we restore the Background Activity Session if backgroundActivity == true { self.backgroundSession = CLBackgroundActivitySession() } guard let location = update.location else { continue } // Do POST with location to server } } catch { print("Could not start location updates") } } } I'm not sure why the code does not work as expected, and I believe I may be misunderstanding how the libraries Work. My understanding is that the liveUpdates stream is capable of emitting values, even if the app has gone to the background/terminated, thus why I'm trying to stop/resume the Background Activity using the "stationary" or "isStationary" attribute coming from the update. Is the behavior I'm trying to achieve possible? If so, I'm I using the right libraries for it? Is my implementation correct? And If not, what would be the recommended approach? Regards
Replies
2
Boosts
1
Views
188
Activity
Dec ’25
Does BGAppRefreshTask Run After a User Force-Quits the App? Seeking Official Clarification
I’m looking for an authoritative answer on how BGAppRefreshTask behaves after a user force-quits an app (swipes it away in the App Switcher). My app relies on early-morning background refresh to prepare and schedule notifications based on user-defined thresholds and weather forecasts. Behavior across devices seems inconsistent, however: sometimes a scheduled background refresh still runs, and other times it appears completely blocked. Apple’s documentation doesn’t clearly state what should happen, and developer discussions conflict. Could someone from Apple please clarify: Will a previously scheduled BGAppRefreshTask run after the user force-quits the app? If not, is there a recommended alternative for time-sensitive updates that must schedule user alerts? What is the expected system behavior regarding the predictability of background refresh after a force-quit? A definitive answer would help ensure the app aligns with intended system behavior. Thanks!
Replies
7
Boosts
0
Views
451
Activity
Dec ’25