I'm trying to implement my first in-app purchase, and I've created the IAP in App Store Connect, and created a sandbox account. When I open Settings > Developer in the iPhone Simulator, there is a "Sandbox Apple Account" option at the bottom. If I click the blue "Sign In" link I'm asked for the email and password, so I enter the correct credentials for the sandbox account. The "Sign In" text goes grey for a few seconds, then it goes blue again. It never changes to show that I'm signed in. Should it? (I think so.) Do I need to sign into the Simulator's Apple Account, too? (I don't think so.) Anyway, aside from that, in my app the IAP is listed and I have a button to purchase it. When I click it I'm asked for the email and password to sign into the Apple Account. I enter the correct sandbox email and password (they are definitely correct) and I see this in the Xcode console: Purchase did not return a transaction: Error Domain=ASDErrorDomain Code=530 "(null)" UserInfo={client-environment-type=Sandbox, NSUnderlyingError=0x600000d0c7b0 {Error Domain=AMSErrorDomain Code=100 "Authentication Failed The authentication failed." UserInfo={NSMultipleUnderlyingErrorsKey=( "Error Domain=AMSErrorDomain Code=2 \"Password reuse not available for account The account state does not support password reuse.\" UserInfo={NSDebugDescription=Password reuse not available for account The account state does not support password reuse., AMSDescription=Password reuse not available for account, AMSFailureReason=The account state does not support password reuse.}", "Error Domain=AMSErrorDomain Code=0 \"Authentication Failed Encountered an unrecognized authentication failure.\" UserInfo={NSDebugDescription=Authentication Failed Encountered an unrecognized authentication failure., AMSDescription=Authentication Failed, AMSFailureReason=Encountered an unrecognized authentication failure.}" ), AMSDescription=Authentication Failed, NSDebugDescription=Authentication Failed The authentication failed., AMSFailureReason=The authentication failed.}}} Why is it talking about password reuse? AFAIK, I have only one sandbox account for this app (and none for any of my other apps), and this is the only one of my apps that has an IAP. Any ideas on how to get an IAP working? Thanks!

How would you go about handling this sort of situation? An app has two tiers of non-consumable in-app purchases. The IAP simply unlocks a certain level of access in the app: The first tier for $1.99 allows the user to add up to 50 things. The second tier for $3.99 allows the user to add up to 200 things. If the user has not bought an IAP the app will show the two tiers available for purchase. The user then buys Tier 1 and happily goes about adding some things to the app. The app now only shows Tier 2 available for purchase, because Tier 1 has been purchased. A few weeks go by and they realise they need to add more than 50 things. Would the user have to suck it up and just accept they should've paid the $3.99? Or, could a new Tier 1.5 be added that's a kind of upgrade price of $2.00 (the difference between the two original tiers) to unlock the higher 200 things level? I doubt this would work properly, because although I can control that tier being displayed or not in the app, I cannot control it in the App Store product pages, and it would be displayed among the Tier 1 and Tier 2 levels, so people would just buy that rather than the full priced Tier 2. How should I handle this situation? Just have the one tier (Tier 2) and make it simpler?

I just added a .systemLarge widget to my app, but I can't get Links to work. I want the user to be able to tap one of the four rows in my widget - like the EmojiRangers example - but I can't get it to work. I watched a Developer video from WWDC20: https://developer.apple.com/videos/play/wwdc2020/10036?time=223 The guy, Izzy, 'simply' embeds an HStack in a Link, and hey presto! It all works. But that doesn't happen for me. There's clearly some code in the background that runs. I already have .widgetURL working for .systemSmall and .systemMedium widgets, and I don't need to use Links on those two types. Those work by sending a URL to .onOpenURL { incomingURL in ... All good there, no issues. I've wrapped each row in the large widget in a Link with the URL of something like myappurlscheme://widgetTapped/widgetId (it's the same url as that used in the small and medium widgets). I build & run. I tap a row. It doesn't act as though a row is tappable (it doesn't go slightly transparent), and just opens the app without hitting .onOpenURL or anything else. Nothing in my scene delegate is triggered. Is there a specific delegate method that gets called? Do I need to set up some awful intents? I'm not using any sort of NavigationStack here; that model doesn't fit my app. Any ideas? Thanks.

On iOS you can create a new Lock Screen that contains a bunch of emoji, and they'll get put on the screen in a repeating pattern, like this: When you have two or more emoji they're placed in alternating patterns, like this: How do I write something like that? I need to handle up to three emoji, and I need the canvas as large as the device's screen, and it needs to be saved as an image. Thanks! (I've already written an emojiToImage() extension on String, but it just plonks one massive emoji in the middle of an image, so I'm doing something wrong there.)

I have widgets providing their timeline using the .atEnd reload policy, i.e.: // AppIntentTimelineProvider: return Timeline(entries: entries, policy: .atEnd) // TimelineProvider let timeline = Timeline(entries: entries, policy: .atEnd) completion(timeline) I can't seem to find any information on what happens after the end of the timeline. So, let's say I've got two days worth of entries, the dev docs for the reload policy say, "A policy that specifies that WidgetKit requests a new timeline after the last date in a timeline passes." Great! But how does it request the new timeline? Does iOS launch my app in the background and simply re-run the timeline to generate another two days worth of entries? I doubt it. I figure I need to implement some sort of background task, and the dev docs say how to do it with an Operation, but then I read that this is an old way of doing it? I've found some info online saying to use something like this, so this is what I've implemented: let kBackgroundWidgetRefreshTask = "my.refresh.task.identifier" // This has been registered in the info.plist correctly class SchedulingService { static let shared = SchedulingService() func registerBackgroundTasks() { let isRegistered = BGTaskScheduler.shared.register(forTaskWithIdentifier: kBackgroundWidgetRefreshTask, using: nil) { task in print("Background task is executing: \(task.identifier)") // This does print "true" self.handleWidgetRefresh(task: task as! BGAppRefreshTask) } print("Is the background task registered? \(isRegistered)") } func scheduleWidgetRefresh() { let request = BGAppRefreshTaskRequest(identifier: kBackgroundWidgetRefreshTask) // Fetch no earlier than 1 hour from now - test, will be two days request.earliestBeginDate = Date(timeIntervalSinceNow: 60 * 60) do { try BGTaskScheduler.shared.submit(request) print("Scheduled widget refresh for one hour from now") } catch { print("Could not schedule widget refresh: \(error)") } } private func handleWidgetRefresh(task: BGAppRefreshTask) { // Schedule a new refresh task scheduleWidgetRefresh() // Start refresh of the widget data let refreshTask = Task { do { print("Going to refresh widgets") try await self.backgroundRefreshWidgets() task.setTaskCompleted(success: true) } catch { print("Could not refresh widgets: \(error)") task.setTaskCompleted(success: false) } } // Provide the background task with an expiration handler that cancels the operation task.expirationHandler = { refreshTask.cancel() } } func backgroundRefreshWidgets() async throws { print("backgroundRefreshWidgets() called") definitelyRefreshWidgets() } } As I've commented above, the line print("Background task is executing: \(task.identifier)") does print true so the task has been registered correctly. I've put the app into the background and left it for hours and nothing is printed to the console. I've implemented a logger that writes to a file in the app container, but that doesn't get anything either. So, is there something I'm misunderstanding? Should I change the reload policy to .after(date)? But what makes the timeline reload? As a second but linked issue, my widgets have countdown timers on them and the entire timeline shows that every entry is correct, but the widgets on the Home Screen simply fail to refresh correctly. For example, with timeline entries for every hour for the next two days from 6pm today (so, 7pm, 8pm...) every entry in the preview in Xcode shows the right countdown timer. However, if you put the widget on the Home Screen, after about five hours the timer shows 25:12:34 (for example). No entry in the timeline preview ever shows more than 24 hours because the entires are every hour, and the one that shows a timer starting at 23:00:00 should never get to 24:00:00 as the next entry would kick in from 0:00:00, so it should never show more than 23:59:59 on the timer. It's like the 23:00:00 timer is just left to run for hours instead of being replaced by the next entry. It's as though the widget isn't refreshing correctly and entries aren't loaded? Given this is the Simulator - and my development device - and both are set to Developer Mode so widget refresh budgets aren't an issue, why is this happening? How do you get widgets to refresh properly? The dev docs are not very helpful (neither is the Backyard Birds example Apple keep pushing). Thanks!

When a user swipes up to see the app switcher, I put a blocking view over my app so the data inside cannot be seen if you flick through the app switcher. I do this by checking if the scenePhase goes from .active to .inactive. If the app goes into the background, scenePhase == .background so I trigger something that would force the user to authenticate with Face ID/Touch ID when the app is next brought to the foreground or launched. However, this doesn't seem to work. The biometrics authentication is executed, but it just lets the user in without showing the Face ID animation. I put my finger over the sensors so it couldn't possibly be authenticating, but it just lets them in. Here's a quick set of logs: scenePhase == .inactive - User showed app switcher scenePhase == .background - User swiped up fully, went to Home Screen scenePhase == .inactive - User has tapped the app icon scenePhase == .active - App is now active authenticate() - Method called authenticate(), authenticateViaBiometrics() == true - User is going to be authenticated via Face ID // Face ID did not appear! success = true - Result of calling `context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics` means user was authenticated successfully error = nil - No error in the authentication policy authenticate(), success - Method finished, user was authenticated Here's the code: print("authenticate(), authenticateViaBiometrics() == true - User is going to be authenticated via Face ID") var error: NSError? guard context.canEvaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, error: &error) else { // Handle permission denied or error print("authenticate(), no permission, or error") authenticated = false defaultsUpdateAuthenticated(false) defaultsUpdateAuthenticateViaBiometrics(false) return } context.evaluatePolicy(.deviceOwnerAuthenticationWithBiometrics, localizedReason: "Authenticate with biometrics") { (success, error) in DispatchQueue.main.async { print("success = \(success)") print("error = \(String(describing: error?.localizedDescription))") if(success) { print("authenticate(), success") authenticated = true } else { print("authenticate(), failure") authenticated = false } } } This happens with or without the DispatchQueue... call.

According to this Apple page, if you make any money from your apps in the EU you have to provide your email address, phone number and address, and they will be displayed on your App Store page for all and sundry to see, use, and likely, abuse. I don't want anyone and everyone to know those details; they are private. I thought Apple was all about privacy? I understand they have to adhere to the DSA, but Apple hasn't raised a single objection to this. Apple has consistently said that not sharing a user's email address with a developer is a part of being in the App Store, i.e. Spotify can't contact someone who downloaded their app; but a user can now contact the developer? I barely make any money from my apps - not even enough to cover the annual developer program fee - but I keep developing to stay current. I cannot afford a PO Box or business address and phone number to shield me from this, so I'm likely to remove my apps from the EU market. You might think I'm being overly-cautious, or having a knee-jerk reaction, but these are my personal, private details, and they should not be available publicly just because I barely clear £1.50 a month from my apps.

I'm trying to get a countdown timer to work, and the way I currently do it in my watchOS 10 app is a complicated load of nonsense to get two Strings that look like "1w 1d" and "12:34:56", i.e. a String that shows components like year, week and day, and another String showing hours, minutes and seconds. The new Text formats seen here https://developer.apple.com/wwdc24/10144?time=645 look useful, but I can't get them to return the values I need. If I use this: let dateA = Date.now let dateB = Date.advanced(by: /* value for 8 days, 12 hours, 34 minutes and 56 seconds */) Text(dateA, format: .offset(to: dateB, allowedFields: [.year, .week, .day], maxFieldCount: 3)) I expect to see "1 week 1 day", but it always comes back as "8 days". I guess it's giving me the most concise result, but I don't want that. I'm not sure anyone would want that. Imagine you have an event coming up in 3 days 6 hours, do you want to see "in 78 hours" or do you want "in 3 days and 6 hours"? Why must we make the user calculate the days and hours in their head when we have the ability to give them the right information? While I'm on this, why does the resulting String have to have "in " at the beginning? I don't want that; it's not my use case, but it's forced on me. I've raised this a hundred times with Apple. I just want to see a String that shows the difference between two dates in a format of my choosing, i.e. "1w 1d", but they never give me what I need, so I have to write extremely complex - and fragile - code that figures this stuff out, and I still can't get that to work properly. Why can't we just have something like: Text(from: dateA, to: dateB, format: "%yy %ww %dd") // for "1 year 2 weeks 3 days", show parts with a value > 0 Text(from: dateA, to: dateB, format: "%0yy %0ww %0dd") // for "0 years 2 weeks 3 days", show all parts regardless of value Text(from: dateA, to: dateB, format: "%y %w %d") // for "1y 2w 3d", show parts with a value > 0 Text(from: dateA, to: dateB, format: "%0y %0w %0d") // for "0y 2w 3d", show all parts regardless of value

iOS app with Home Screen and Lock Screen widgets written in Swift/SwiftUI. I've never been able to get widgets to work properly. It's more pronounced on Lock Screen widgets, so let's try that method first... The app stores data in Core Data as an Event. They're read into my model and stored as WidgetEventDetails structs: struct WidgetEventDetails: AppEntity, Identifiable, Hashable { public var eventId: String public var name: String public var date: Date public var id: String { eventId } This all works absolutely fine in the iOS app, and each one is unique based on the eventId. When I go to add a Lock Screen widget, I customise the Lock Screen, tap in the section to add a widget, and my widgets appear correctly and are selectable: (bottom right, says "1y 28w 1d") So, I tap it and it appears in the widgets section: But it appears as "17w 6d", which is a different event entirely. Notice how the one in the selectable widgets has changed to "15w 5d", and the one I tapped (1y 28w 1d) is nowhere to be seen. So, I tap the one in the top row (17w 6d) to select an event, and this appears, suggesting that the event is the "Edinburgh & Glasgow 2024-02" event: But that event is actually only a day away (1d), so that's not the one I selected at all. I tap the list and see these events: I select "Las Vegas 2024", which is 17w 3d away, and this is shown: 17w 6d is a different event, not Las Vegas 2024. So, I tap it again and see this. The "Loading" text appears for ages, but occasionally does show the full list, as before: I select "Edinburgh & Glasgow 2024-02" which is 1d away, and I see this again: So, I resign myself to hoping it'll just figure itself out, and I tap "Done": "17w 6d" again :( I finish customising, and exit the customisation screen. I show the Lock Screen, and I see this: Why doesn't this work? Here's the code: @main struct WidgetExtensionBundle: WidgetBundle { @WidgetBundleBuilder var body: some Widget { WidgetExtension() } } struct WidgetExtension: Widget { var body: some WidgetConfiguration { AppIntentConfiguration(kind: kWidgetKind, intent: WidgetEventIntent.self, provider: WidgetEventTimelineProvider()) { entry in WidgetEntry(entry: entry) .environment(modelData) } .configurationDisplayName(NSLocalizedString("AddingWidget_Title", comment: "Adding the Widget")) .description(NSLocalizedString("AddingWidget_Description", comment: "Adding the Widget")) .supportedFamilies([.accessoryCircular, .accessoryInline, .accessoryRectangular, .systemSmall, .systemMedium]) .contentMarginsDisabled() } } struct WidgetEventIntent: WidgetConfigurationIntent { static let title: LocalizedStringResource = "AddingWidget_Title" static let description = IntentDescription(LocalizedStringResource("AddingWidget_Description")) @Parameter(title: LocalizedStringResource("Event")) var event: WidgetEventDetails? init(event: WidgetEventDetails? = nil) { self.event = event } init() {} static var parameterSummary: some ParameterSummary { Summary { \.$event } } } struct EventQuery: EntityQuery, Sendable { func entities(for identifiers: [WidgetEventDetails.ID]) async throws -> [WidgetEventDetails] { modelData.availableEvents.filter { identifiers.contains($0.id) } // availableEvents is just [WidgetEventDetails] } func suggestedEntities() async throws -> [WidgetEventDetails] { return modelData.availableEvents.filter { $0.type == kEventTypeStandard } } } If you think it's the TimelineProvider causing it, I can provide that code, too.

I recently raised this post explaining how I couldn't seem to get watchOS 9 complications to work, and I've figured out a partial fix. The original post details the issues with complications - and some are still valid - but this fix applies to both my complications and Home Screen / Lock Screen widgets. I was following the various WWDC 2020/2022 videos and the Emoji Rangers sample code, adding bits here and there, and assuming they were completely valid. Sadly, this bit of code in the widget's dynamic intents IntentTimelineProvider getTimeline really just banjaxed everything: // Create entries for one day, 15 minutes apart let currentDate = Date() for minuteOffset in stride(from: 0, to: 60 * 60 * 24, by: 15) { let entryDate = Calendar.current.date(byAdding: .minute, value: minuteOffset, to: currentDate)! entries.append(EventEntry(date: entryDate, event: event)) } If I remove that, and generate a different timeline with specific dates and times (for example: now, in 10 mins, in 2 hours, in a day, etc.) the complications appear correctly, as do Home Screen and Lock Screen widgets. The outstanding issues with complications are: The previews all use the same data, but getSnapshot() is supposed to return the data specific to that event from the configuration, i.e. if let theId = configuration.event?.identifier. "Christmas" is correct, but "Gallery Opening" is using Christmas's data. Once I've selected the event I want to use in a complication the edit screen shows it as totally blank, not even a placeholder: I hope this little fix works for you guys. And, if you know how to fix the above issues, let me know. (iOS 16.1 beta 1, Xcode 14.1 beta 1)

Hi all. I've spent six hours today trying to resize images from the Photos Library on the iPhone Simulator, but no matter what I try - and I've tried everything on StackOverflow - I always get a white line at the bottom of the image, even when trying the suggestions that specifically say "this one even gets rid of the white line!" This is just one of the many attempts: let image: UIImage = <whatever> let size = CGSize(width: 800, height: 600) guard let data = resizeImage(image: image, size: size, scale: 1).jpegData(compressionQuality: 0.75) ?? image.pngData() else { return false } func resizeImage(image: UIImage, size: CGSize, scale: CGFloat) -> UIImage { let availableRect = AVFoundation.AVMakeRect(aspectRatio: image.size, insideRect: .init(origin: .zero, size: maxSize)) let targetSize = availableRect.size let format = UIGraphicsImageRendererFormat() format.scale = scale let renderer = UIGraphicsImageRenderer(size: targetSize, format: format) let resized = renderer.image { (context) in image.draw(in: CGRect(origin: .zero, size: targetSize)) } return resized } I've read that image.draw(in:) adds that white line because it's using non-integer values and the background of a JPEG is white, so I floor()d and round()ed the size values, but I always get the white line. I just can't seem to get it to work. Does anyone have a working function that will resize one of the JPEG images included in the Simulator without putting that white line down there? Note: The pink/purple flowers image always resizes and comes back upside down, and the only difference I can see in the six images included in the Simulator is that that one is HEIF while all the others are JPEG. I'll also need any function to handle HEIF/HEIC, too, I guess... This is on Xcode 15.0.1 (15A507) with Simulator iOS 17.0.1. I've also tried it on a real device (iPhone 15 Pro Max, iOS 17.4) and the same thing happens, so it's not like the Simulator images are banjaxed in some way.

Hey all. I've been rewriting my Objective-C app in SwiftUI (it's going well, thanks!) and I'm hitting this issue that I thought I'd solved ages ago. I have version 5.1 of my original ObjC app using version 11 of the Core Data model. I've created a new version 12, added a couple of new attributes, and created a mapping model from 11 to 12. The fields I've added are booleans, and I've set them to have a default value of NO so that new entries will automatically get NO, but there are existing records that don't have that field at all, and I'd like them to also get NO (or YES, depending on something in the other fields, but I haven't figured out how to do that yet). This is how Core Data is set up in the new Swift target: public extension URL { // Returns a URL for the given app group and database pointing to the sqlite database static func storeURL(for appGroup: String, databaseName: String) -> URL { guard let fileContainer = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: appGroup)?.appending(path: kCoreDataFolder) else { logger.error("Shared file container could not be created.") fatalError("CoreData: Shared file container could not be created.") } return fileContainer.appendingPathComponent("\(kCoreDataModel)") } } // MARK: - Persistence Controller struct CoreData { static let shared = CoreData() let container: NSPersistentContainer init() { let storeURL = URL.storeURL(for: kAppGroup, databaseName: kCoreDataModel) let storeDescription = NSPersistentStoreDescription(url: storeURL) container = NSPersistentContainer(name: kCoreDataModel) container.persistentStoreDescriptions = [storeDescription] container.loadPersistentStores(completionHandler: { (storeDescription, error) in if let error = error as NSError? { logger.error("Failed to initialise Managed Object Model from url: \(storeURL), with error: \(error), \(error.userInfo)") fatalError("CoreData: Failed to initialise Managed Object Model from url: \(storeURL), with error: \(error), \(error.userInfo)") } }) container.viewContext.automaticallyMergesChangesFromParent = true } When I run the old app on the Simulator it adds some demo data (using model v11), and the app functions properly. If I then install the new version - using v12 - it fails with a Core Data error because it couldn't migrate the data. (Apologies, I cannot get the exact error at the moment as I'm part-way through redoing some other stuff and the app won't build.) I've read somewhere that "When we use the NSPersistentContainer class to create and manage the Core Data stack, we don't need to do any additional setup work, the lightweight migration is automatically activated for us." But if that's the case, why does my app crash? I'll try and get the exact error for you... How do I implement lightweight migration in Swift? This page suggests creating a persistent coordinator and adding a couple of options, but I can't quite figure out how to do that with the code I already have, and each time I try it seems to beat the original store so I keep going back to the above code because it works.

I have a List which acts like a form where you can enter values. It uses a custom View struct SectionArea to separate the various sections and cut down on code duplication, like this: List { SectionArea(title: "Section One", height: 176, horizontalPadding: 0, roundCorners: (0, 0, 0, 0)) { VStack { Button { print("Pressed Button One") fullScreenViewChoice = .optionOne showSubView.toggle() } label: { HStack { Text("Button One") Spacer() Image(systemName: "chevron.right") } } .frame(height: 40) Divider() Button { print("Pressed Button Two") fullScreenViewChoice = .optionTwo showSubView.toggle() } label: { HStack { Text("Button Two") Spacer() Image(systemName: "chevron.right") } } .frame(height: 40) Divider() } } } .listStyle(.plain) .listRowSpacing(0) It works fine, but regardless of which button I press it always acts as though both buttons have been pressed. Say I press Button One, the console will display: Pressed Button One Pressed Button Two Can someone tell me where I'm going wrong here, please? Thanks! EDIT: Actually, it doesn't look like it's because of the SectionArea struct, because I've taken the code from there and wrapped it around the content directly, rather than using that struct, and it still does it. I've removed everything and just put this: List { VStack { ButtonOne ButtonTwo } } It still presses both buttons.

Right, this is getting on my nerves now. iOS app installed on iPhone via Xcode. Watch app installed on Watch via Xcode. Both apps are running and are in the foreground. iOS app launches on iPhone and reports: WCSession.isSupported = YES theDelegate.session.isPaired = YES theDelegate.session.watchAppInstalled = NO theDelegate.session.activationState = Activated I press a button in the Watch app. It reports: session == activated and reachable iOS app delegate receives a message from the Watch app: didReceiveMessage (from Watch): message = {     action = giveMeUpdatedItems; } The apps must be installed on the devices in order for the Watch app to have used sendMessage (which is only available if the session is reachable, which it is). iOS app delegate passes that through as a notification to another bit of code that collates the info and sends it back to the Watch app. watchNotificationUpdateData; userInfo = {     action = giveMeUpdatedItems; } That bit of code in the iOS app checks whether we can send data to the Watch app, and doesn't send the data because: WCSession.isSupported = YES theDelegate.session.isPaired = YES theDelegate.session.watchAppInstalled = NO theDelegate.session.activationState = Activated If I remove the check for watchAppInstalled, I get this: Error sending Watch application context: Watch app is not installed. {     NSLocalizedDescription = "Watch app is not installed.";     NSLocalizedRecoverySuggestion = "Install the Watch app."; } I've deleted and reinstalled the app on both devices countless times. I've rebooted the devices, plus the Mac. I've reinstalled Xcode. I've cleaned builds. I've deleted DerivedData. And still it says the companion app isn't installed.

I have an iOS app that's written in Objective-C, uses Core Data, and has a number of SwiftUI targets (Widgets, Watch app). I'd like to convert the main app to SwiftUI and keep access to the data in the Core Data stack, but move to SwiftData immediately. Since I'm doing a lot of rewriting, it makes sense to leap ahead rather than have to rewrite it in a year or two. Effort isn't an issue; I'm a tenacious SOB ;) But I have no idea how to do this, and can't find any examples on the net of this particular scenario. All I can find is how to start using SwiftData instead of Core Data in an app that's already written in Swift. So, how do I go about the migration without losing data? I guess I'll need to add a new Swift/SwiftUI target for the main app, but then how do I migrate the Core Data store over? In ObjC there's a lot of messing with stacks and the actual location of the model in the filesystem, but I doubt this is necessary in the new way of doing things? Any help would be appreciated. Thanks!