Overview

I've run into a problem related to navigation links in child Views containing a SwiftData @Query and a predicate. When tapping on a NavigationLinks, the containing View is invalidated pausing the UI. When tapping back, the View is invalidated a second time during which time the View ignores any new taps for navigation leading to a poor user experience. A complete example: import SwiftUI import SwiftData @Model final class Item { var num: Int init(num: Int) { self.num = num } } @main struct TestSwiftDataApp: App { var sharedModelContainer: ModelContainer = { let schema = Schema([Item.self]) let modelConfiguration = ModelConfiguration(schema: schema, isStoredInMemoryOnly: true) let container: ModelContainer do { container = try ModelContainer(for: schema, configurations: [modelConfiguration]) } catch { fatalError("Could not create ModelContainer: \(error)") } // Add some sample data Task { @MainActor in for i in 0...1000 { container.mainContext.insert(Item(num: i)) } } return container }() var body: some Scene { WindowGroup { ContentView() } .modelContainer(sharedModelContainer) } } extension Color { static func random() -> Color { Color(red: .random(in: 0...1), green: .random(in: 0...1), blue: .random(in: 0...1)) } } struct ContentView: View { var body: some View { NavigationStack { SubView() .navigationDestination(for: Item.self) { item in Text("Item at \(item.num)") } } } } struct SubView: View { @Environment(\.modelContext) private var modelContext @Query(filter: #Predicate<Item> { item in item.num < 20 }, sort: \.num) private var items: [Item] var body: some View { let _ = Self._printChanges() List { ForEach(items) { item in NavigationLink(value: item) { Text("Item \(item.num)") }.background(Color.random()) } } } } The background colors of cells will shift every invalidation. In addition there's some debugging in there to show what's happening. When running it, I get SubView: @self, @identity, _modelContext, @128, @144 changed. SubView: @self changed. SubView: @dependencies changed. Then I tap on an item and it invalidates: SubView: @self changed. Tapping back invalidates it again during which time the UI ignores new taps: SubView: @self changed. The odd thing is, this behavior doesn't happen if the NavigationStack is moved to the child View with the NavigationLinks like this: struct ContentView2: View { var body: some View { SubView2() } } struct SubView2: View { @Environment(\.modelContext) private var modelContext @Query(filter: #Predicate<Item> { item in item.num < 20 }, sort: \.num) private var items: [Item] var body: some View { let _ = Self._printChanges() NavigationStack { List { ForEach(items) { item in NavigationLink(value: item) { Text("Item \(item.num)") }.background(Color.random()) } } .navigationDestination(for: Item.self) { item in Text("Item at \(item.num)") } } } } When running this, there's one less change as well and no invalidations on tap or back: SubView: @self, @identity, _modelContext, @128, @144 changed. SubView: @dependencies changed. The problem also doesn't happen if the @Query does not have a filter #Predicate. Unfortunately, the application in question has a deeper hierarchy where views with a @Query with a predicate can navigation to other views with a @Query and predicate, so neither solution seems ideal. Is there some other way to stop the invalidations from happening?

New to Apple development. Vision Pro is the reason I got a developer license and am learning XCode, SwiftUI .... The Vision Pro tutorials seem to use WIFI or the developer strap to connect the Development environment to the Vision Pro. I have the developer strap, but can't use it on my company computer. I have been learning using the developer tools, but I can't test the apps on my personal Vision Pro. Is there a way to generate an app file on the Mac Book that I can download to the Vision Pro? This would be a file that I could transfer to cloud storage and download using Safari to the Vision Pro. I will eventually get a Vision Pro at work, but till then I want to start developing.

Hello, I want to use universal links in my application, for which I need to get the TeamID and BundleId, for apple-app-site-association file. Can you please tell me, do I have to buy an Apple Developer Account at the time of development to do this, or can I get it all for free at the time of development?

I have a Developer account with a Developer Role, although apparently without the stated ability to create my own Sandbox ID. So, our company's Administrator is trying to create one for me. But each time he enters a new icloud.com address to create one, he gets the error, "Your Apple ID or password was entered incorrectly." (The example at the above link uses icloud.com, and that seems the natural place to do this. I'm assuming that since you can't actually create an icloud.com email without an Apple ID, that this sandbox creation process should be ok with the email not existing yet.)

I built two parts of my app a bit disjointed: my physics component, which controls all SceneReconstruction, HandTracking, and WorldTracking. my spatial GroupActivities component that allows you to see personas of those that join the activity. My problem: When trying to use any DataProvider in a spatial experience, I get the ARKit Session Event: dataProviderStateChanged, which disables all of my providers. My question: Has anyone successfully been able to find a workaround for this? I think it would be amazing to have one user be able to be the "host" for the activity and the scene reconstruction provider still continue to run for them.

Hi, For 10 days now we've been rejected with no answer. I am afraid Apple will never answer us... and 3 years of development down the drain. My team and our whole families are waiting but as the days go by, it is looking more and more grim for us I am afraid. Is there anything we can do? Our game had a decent rating and audience reception so far. All of our code is built by us over thousands of hours. We have alot of features that competitors do not have, this was even mentioned by several Youtubers and called out as a unique game. Guideline 4.3(a) - Design - Spam We noticed your app shares a similar binary, metadata, and/or concept as apps submitted to the App Store by other developers, with only minor differences. Any advice would be so appreciated ! Thank you, Alex

I can enroll iOS and macOS devices with success when DEP is not used (OTA). With DEP, I can enroll iOS devices but not macOS devices. In this case, the process fails when the activation profile is received, because the system cannot decrypt the returned payload. Note that I sign the payload using the server certificate (trusted as the anchored certs are defined accordingly) and I encrypt the payload using the device identity certificate. This identity certificate was obtained when the device reached the enrollment URL (used to sign the inbound payload). From the console logs, it seems that the device cannot find the aforementioned certificate using the issuer and serial number, which is surprising because this should be the device identity certificate. I currently use PKCS7 openssl 3 API. I am wondering if I should switch for the CMS functions since it provides a way to define the certificate using it's key identifier rather than the issuer and serial number. I'm also wondering if certificates are missing in the chain. Any help would be greatly appreciated.

I had some support tickets about dates not showing properly for customers based in the America/Merida timezone. Essentially America/Merida permanently changed to -0500 (CDT) on October 31, 2021, and it appears that the NSTimeZone does not respect this change, and reports times as -0600 (CST). Creating a little test tool with the following code: +(void) run { NSArray<NSString *> * args = [[NSProcessInfo processInfo] arguments]; if ([args count] > 1) { NSString *timezone = args[1]; NSLog(@"custom TZ: %@", timezone); NSTimeZone * tz = [NSTimeZone timeZoneWithName:timezone]; [NSTimeZone setDefaultTimeZone:tz]; } NSDate * now = [NSDate date]; NSLog(@"Testing Dates: (local timezone : %@)", [NSTimeZone localTimeZone]); NSLog(@" (default timezone: %@)", [NSTimeZone defaultTimeZone]); NSLog(@" (is DST : %@)", [[NSTimeZone defaultTimeZone] isDaylightSavingTimeForDate:now] ? @"YES" : @"NO"); NSLog(@" (current cal-tz : %@)", [[NSCalendar currentCalendar] timeZone]); NSLog(@" (current locale : %@)", [[NSLocale currentLocale] localeIdentifier]); NSLog(@"Now: %@", now); } And running with the America/Merida timezone passed in, I'm getting the following output: custom TZ: America/Merida Testing Dates: (local timezone : Local Time Zone (America/New_York (EDT) offset -14400 (Daylight))) (default timezone: America/Merida (CST) offset -21600) (is DST : NO) (current cal-tz : America/Merida (CST) offset -21600) (current locale : en_US) Now: Tue May 14 15:06:14 2024 Running the same code on Linux via the GNUStep implementation of Objective-C, I get the correct output with America/Merida showing up as CDT (ie (is DST : YES)). Are there any good ways to work around this?

Hello, I have been stumped on this issue for a week and am looking for guidance on how to resolve it. I am aware of Guideline 5.1.1 Legal: Privacy - Data Collection and Storage and have read through it. The core functionality of our app is a Message Chatbot. This is the only feature we have, and we require user registration to limit the number of messages that can be sent on the free tier. However, despite explaining why we need user registration and pointing to a number of very similar apps that have the exact same registration system, we are not able to get approval from the App Reviewers. Their message is: "To resolve this issue, please revise the app to let users freely access the app's features that are not account-based." The problem is that we do not have any other features in our app, so we are stuck. I was wondering if anyone else had similar issues and what they did to fix it? Thank you!

I am developing a suite of apps/helpers that get built into an installer package for deployment (outside The App Store). We have that release process ± working, except that most of the development team members are not admins/privileged on the team. They don't really need to publish on behalf of the team, and so we don't want to have debug builds also depend on being signed as "Developer ID Application". But that is running into problems… If I select instead "Sign to Run Locally" this results in an error for some of the build products along the lines of: [Build Target] requires a provisioning profile. Enable development signing and select a provisioning profile in the Signing & Capabilities editor. If I select "Apple Development" as the Code Signing Identity it leaves me with basically the same error as "Developer ID Application" does: Provisioning profile [Name of App/Helper] doesn't include signing certificate "Apple Development: [Name of Developer] ([TEAMID])" And finally, if simply set the Debug value for Provisioning Profile to "None" for the problematic products I get errors like: "[Name of app]" requires a provisioning profile. Select a provisioning profile in the Signing & Capabilities editor. I believe perhaps because some of the targets have an entitlements file granting access to various things (their own XPC services, their own shared preferences, as well as Outgoing Network Connections and com.apple.security.smartcard access…). In older versions of Xcode and/or macOS we didn't have trouble like this, local development could be done by basically any team member. Now it seems like maybe all developers need to have release-signing privileges to test/debug even on their own machines? Or is there a combination I'm missing, that would allow anyone on the team (or perhaps not even on the team) to build and debug the code locally, while still limiting who is able to actually sign notarized release builds on behalf of the team?

Since iOS 12 it has become difficult to detect the end of playback using the system music player. In earlier iOS versions, the now playing item would be set nil and you would receive a notification that the player stopped. In iOS 12 and later, nowPlayingItem still contains the current song and the only notification you get is MPMusicPlayerControllerPlaybackStateDidChangeNotification with the playbackState set to MPMusicPlaybackStatePaused. Pressing pause in my car (or any remote access) generates the same conditions making it difficult to correctly detect the difference. It would be nice if they added a notification that playback was done (similar to the other players). Any suggestions?

Hi there! I am trying to build a macOS app using Electron. There is a feature on the app that depends on a http server to run locally. This Server was built using Java. Both the compiled server and the Java Runtime Environment were bundled in the build. To start the server I use NodeJS's child_process.spawn, pointing the bundled JRE's executable and the server implementation. The issue I am facing is that the Java Virtual Machine is not starting. It returns the following error message: Error: Port Library failed to initialize: -1 Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit. Both the JRE and the server are located in Contents directory, in a subdirectory I have created for them. Here are the app's entitlements: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>com.apple.security.app-sandbox</key> <true/> <key>com.apple.security.application-groups</key> <string>REDACTED</string> <key>com.apple.application-identifier</key> <string>REDACTED</string> <key>com.apple.developer.team-identifier</key> <string>REDACTED</string> <key>com.apple.security.cs.allow-jit</key> <true/> <key>com.apple.security.cs.allow-unsigned-executable-memory</key> <true/> <key>com.apple.security.cs.allow-dyld-environment-variables</key> <true/> <key>com.apple.security.cs.disable-executable-page-protection</key> <true/> <key>com.apple.security.cs.disable-library-validation</key> <true/> <key>com.apple.security.network.client</key> <true/> <key>com.apple.security.network.server</key> <true/> <key>com.apple.security.device.microphone</key> <true/> <key>com.apple.security.device.audio-input</key> <true/> <key>com.apple.security.device.camera</key> <true/> <key>com.apple.security.print</key> <true/> <key>com.apple.security.files.user-selected.read-write</key> <true/> <key>com.apple.security.temporary-exception.files.absolute-path.read-write</key> <true/> </dict> </plist> Here the entitlements inherit: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>com.apple.security.app-sandbox</key> <true/> <key>com.apple.security.inherit</key> <true/> </dict> </plist> Is there any missing step to allow the spawning of this process?

Try to create new version of app and got next error. Last version is 1.0, try to create 1.1

Hello, I am trying to get network statistics using Swift on macOS. I am attempting to obtain: total input bytes total output bytes total input packets total output packets The following code works in the app as far as I can tell so far, but... the for-loop is a hack that I'd like to correct by properly iterating over all the interfaces. import Foundation import OSLog struct NetworkStatisticsData { var totalInputBytes: UInt64 = 0 var totalOutputBytes: UInt64 = 0 var totalInputPackets: UInt64 = 0 var totalOutputPackets: UInt64 = 0 } final class NetworkStatistics: Sendable { private let logger = Logger(subsystem: Bundle.main.bundleIdentifier!, category: "SwiftNetworkInformation") func getNetworkStatistics() -> NetworkStatisticsData { var networkStatisticsData = NetworkStatisticsData() for i in 1..<24 { // <- this for-loop should be iterating over a list of interfaces. NET_RT_IFLIST2 ? var keys: [Int32] = [ CTL_NET, PF_LINK, NETLINK_GENERIC, IFMIB_IFDATA, Int32(i), IFDATA_GENERAL ] var mibData: ifmibdata = ifmibdata() var mibDataSize: size_t = MemoryLayout<ifmibdata>.size if sysctl(&keys, u_int(keys.count), &mibData, &mibDataSize, nil, 0) < 0 { logger.error("sysctl error getting mib data: \(String(describing: strerror(errno)))") } networkStatisticsData.totalInputPackets += mibData.ifmd_data.ifi_ipackets networkStatisticsData.totalOutputPackets += mibData.ifmd_data.ifi_opackets networkStatisticsData.totalInputBytes += mibData.ifmd_data.ifi_ibytes networkStatisticsData.totalOutputBytes += mibData.ifmd_data.ifi_obytes } return networkStatisticsData } } Any thoughts on how to iterate over all of the network interfaces (maybe using NET_RT_IFLIST2)? When I run ifconfig in the terminal, there are 24 interfaces, hence the reason for 24 in the for-loop.

Hi, Recently noticed this issue on Xcode 15.2 When I select a Test Plan, disable a class, enable just 1 test within that class and refresh the test plan the entire class gets enabled again. steps to notice the issue: Select Test Plan 1 Disable a class Enable 1 test within the class Select Test Plan 2 Select Test Plan 1 Disabled class and all the tests inside the class are enabled. Note: For now the workaround for that is disabling each test of the class individually Does anyone have any idea why this is happening? If theres a way to disable a class instead of disabling each test inside the class?

Hi, we recently noticed an issue when exporting the localization files from one of our projects. So in the exported .xliff file, there is a string that has been varied into the plural forms of zero, one and other. We had translated them into Japanese. But in the .xliff file, the source element of this string in plural ONE is missing, while the target as well as the others plural strings are showing correct. We've also checked in Xcode (15.3), the content of whether the source or target are there for all the plural forms, as you can see below. The same issue (same string) also exists in Korean and Russian, but not in other languages we support (like German, French, Chinese), which is a bit weird to us. Does anyone have any idea why this is happening and how can we fix it?

I'm trying to expose my native shazamkit code to the host react native app. The implementation works fine in a separate swift project but it fails when I try to integrate it into a React Native app. Exception 'required condition is false: IsFormatSampleRateAndChannelCountValid(format)' was thrown while invoking exposed on target ShazamIOS with params ( 1682, 1683 ) callstack: ( 0 CoreFoundation 0x00007ff80049b761 __exceptionPreprocess + 242 1 libobjc.A.dylib 0x00007ff800063904 objc_exception_throw + 48 2 CoreFoundation 0x00007ff80049b56b +[NSException raise:format:] + 0 3 AVFAudio 0x00007ff846197929 _Z19AVAE_RaiseExceptionP8NSStringz + 156 4 AVFAudio 0x00007ff8461f2e90 _ZN17AUGraphNodeBaseV318CreateRecordingTapEmjP13AVAudioFormatU13block_pointerFvP16AVAudioPCMBufferP11AVAudioTimeE + 766 5 AVFAudio 0x00007ff84625f703 -[AVAudioNode installTapOnBus:bufferSize:format:block:] + 1456 6 muse 0x000000010a313dd0 $s4muse9ShazamIOSC6record33_35CC2309E4CA22278DC49D01D96C376ALLyyF + 496 7 muse 0x000000010a313210 $s4muse9ShazamIOSC5startyyF + 288 8 muse 0x000000010a312d03 $s4muse9ShazamIOSC7exposed_6rejectyyypSgXE_ySSSg_AGs5Error_pSgtXEtF + 83 9 muse 0x000000010a312e47 $s4muse9ShazamIOSC7exposed_6rejectyyypSgXE_ySSSg_AGs5Error_pSgtXEtFTo + 103 10 CoreFoundation 0x00007ff8004a238c __invoking___ + 140 11 CoreFoundation 0x00007ff80049f6b3 -[NSInvocation invoke] + 302 12 CoreFoundation 0x00007ff80049f923 -[NSInvocation invokeWithTarget:] + 70 13 muse 0x000000010a9210ef -[RCTModuleMethod invokeWithBridge:module:arguments:] + 2495 14 muse 0x000000010a925cb4 _ZN8facebook5reactL11invokeInnerEP9RCTBridgeP13RCTModuleDatajRKN5folly7dynamicEiN12_GLOBAL__N_117SchedulingContextE + 2036 15 muse 0x000000010a925305 _ZZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEiENK3$_0clEv + 133 16 muse 0x000000010a925279 ___ZN8facebook5react15RCTNativeModule6invokeEjON5folly7dynamicEi_block_invoke + 25 17 libdispatch.dylib 0x000000010e577747 _dispatch_call_block_and_release + 12 18 libdispatch.dylib 0x000000010e5789f7 _dispatch_client_callout + 8 19 libdispatch.dylib 0x000000010e5808c9 _dispatch_lane_serial_drain + 1127 20 libdispatch.dylib 0x000000010e581665 _dispatch_lane_invoke + 441 21 libdispatch.dylib 0x000000010e58e76e _dispatch_root_queue_drain_deferred_wlh + 318 22 libdispatch.dylib 0x000000010e58db69 _dispatch_workloop_worker_thread + 590 23 libsystem_pthread.dylib 0x000000010da67b84 _pthread_wqthread + 327 24 libsystem_pthread.dylib 0x000000010da66acf start_wqthread + 15 ) RCTFatal facebook::react::invokeInner(RCTBridge*, RCTModuleData*, unsigned int, folly::dynamic const&, int, (anonymous namespace)::SchedulingContext) facebook::react::RCTNativeModule::invoke(unsigned int, folly::dynamic&&, int)::$_0::operator()() const invocation function for block in facebook::react::RCTNativeModule::invoke(unsigned int, folly::dynamic&&, int) This is my swift file, error happens in the record function. import Foundation import ShazamKit @objc(ShazamIOS) class ShazamIOS : NSObject { @Published var matching: Bool = false @Published var mediaItem: SHMatchedMediaItem? @Published var error: Error? { didSet { hasError = error != nil } } @Published var hasError: Bool = false private lazy var audioSession: AVAudioSession = .sharedInstance() private lazy var session: SHSession = .init() private lazy var audioEngine: AVAudioEngine = .init() private lazy var inputNode = self.audioEngine.inputNode private lazy var bus: AVAudioNodeBus = 0 override init() { super.init() session.delegate = self } @objc func exposed(_ resolve:RCTPromiseResolveBlock, reject:RCTPromiseRejectBlock){ start() resolve("ios code executed") } func start() { switch audioSession.recordPermission { case .granted: self.record() case .denied: DispatchQueue.main.async { self.error = ShazamError.recordDenied } case .undetermined: audioSession.requestRecordPermission { granted in DispatchQueue.main.async { if granted { self.record() } else { self.error = ShazamError.recordDenied } } } @unknown default: DispatchQueue.main.async { self.error = ShazamError.unknown } } } private func record() { do { self.matching = true let format = self.inputNode.outputFormat(forBus: bus) self.inputNode.installTap(onBus: bus, bufferSize: 8192, format: format) { [weak self] (buffer, time) in self?.session.matchStreamingBuffer(buffer, at: time) } self.audioEngine.prepare() try self.audioEngine.start() } catch { self.error = error } } func stop() { self.audioEngine.stop() self.inputNode.removeTap(onBus: bus) self.matching = false } @objc static func requiresMainQueueSetup() -> Bool { return true; } } extension ShazamIOS: SHSessionDelegate { func session(_ session: SHSession, didFind match: SHMatch) { DispatchQueue.main.async { [self] in if let mediaItem = match.mediaItems.first { self.mediaItem = mediaItem self.stop() } } } func session(_ session: SHSession, didNotFindMatchFor signature: SHSignature, error: Error?) { DispatchQueue.main.async {[self] in self.error = error self.stop() } } } objC file #import <Foundation/Foundation.h> #import "React/RCTBridgeModule.h" @interface RCT_EXTERN_MODULE(ShazamIOS, NSObject); RCT_EXTERN_METHOD(exposed:(RCTPromiseResolveBlock)resolve reject:(RCTPromiseRejectBlock)reject) @end how I consume the exposed function in RN. const {ShazamModule, ShazamIOS} = NativeModules; const onPressIOSButton = () => { ShazamIOS.exposed().then(result => console.log(result)).catch(e => console.log(e.message, e.code)); };

I'm trying to integrate the option to the player to save their data in the cloud, I integrate the CloudKit, change some stuff to make it work and build in Xcode to my phone. But when I try to integrate the CloudSave, 50 unnasigned symbols jump,like this one: Undefined symbol: _CKContainer_Default I managed to fix them by updating the recommended settings for Xcode. But then 4 more errors appear: Sandbox: il2cpp(12538) deny(1) file-read-data /Users/Username/Test Apple Kit 2022/Build/Il2CppOutputProject/IL2CPP/build/deploy_arm64/il2cpp So, don't let me build and I've looked everywhere but no one seems to had this same error

Hello, I developed a parental control app, this app has two clients one for the child and one for the parent. I could implement screen time to retrieve the child's screen time data and show it to the child by ActivityReportExtension but I didn't find any document to implement this feature on the parent device. I mean like the Apple screen time, parents can see their children's screen time (in the settings>screen time) I need to implement ActivityReportExtension in the parent client of my app that shows the child's screen time. is it possible or this API is only restricted to Apple itself?

[Q] What type of profiles are officially reported by the ES_EVENT_TYPE_NOTIFY_PROFILE_ADD and ES_EVENT_TYPE_NOTIFY_PROFILE_REMOVE events? It looks like to be only Configuration Profiles. Which would make sense as the properties of es_profile_t match closely the payload keys of a configuration profile file. Also only addition and removal of configuration profiles are reported when playing with configuration profiles and provisioning profiles.