A NavigationStack with a singular enum for .navigationDestination() works fine. Both NavigationLinks(value:) and directly manipulating the NavigationPath work fine for moving around views. Zero problems. The issue is when we instead use a NavigationSplitView, I've only dabbled with two-column splits (sidebar and detail) so far. Now, if the sidebar has its own NavigationStack, everything works nicely on an iPhone, but on an iPad, you can't push views onto the detail from the sidebar. (They're pushed on the sidebar) You can solve this by keeping a NavigationStack ONLY on the detail. Sidebar links now properly push onto the detail, and the detail can move around views by itself. However, if you mix NavigationLink(value:) with manually changing NavigationPath, it stops working with no error. If you only use links, you're good, if you only change the NavigationPath you're good. Mixing doesn't work. No error in the console either, the breakpoints hit .navigationDestination and the view is returned, but never piled up. (Further attempts do show the NavigationPath is being changed properly, but views aren't changing) This problem didn't happen when just staying on NavigationStack without a NavigationSplitView. Why mix? There's a few reasons to do so. NavigationLinks put the appropriate disclosure indicator (can't replicate its look 100% without it), while NavigationPaths let you trigger navigation without user input (.onChange, etc) Any insights here? I'd put some code samples but there's a metric ton of options I've tested here.

Hi, Is there any way of changing the contentInset (UIKit variant) of a List in SwiftUI? I do not see any APIs for doing so, the closest I gotten is to use safeAreaInset . While visually that works the UX is broken as you can no longer "scroll" from the gap made by the .safeAreaInset(edge:alignment:spacing:content:) I have subbmited a feedback suggestion: FB16866956

I have the MainView as the active view if the user is logged in(authenticated). the memory allocations when we run profile is pretty good. We have graphql fetching, we have token handling eg: This is All heap: 1 All Heap & Anonymous VM 13,90 MiB 65408 308557 99,10 MiB 373965 Ratio: %0.14, %0.86 After what i have checked this is pretty good for initialise and using multiple repositories eg. But when we change tabs: 1 All Heap & Anonymous VM 24,60 MiB 124651 543832 156,17 MiB 668483 Ratio: %0.07, %0.40 And that is not pretty good. So i guess we need to "kill" it or something. How? I have tried some techniques in a forum this was a recommended way: public struct LazyView<Content: View>: View { private let build: () -> Content @State private var isVisible = false public init(_ build: @escaping () -> Content) { self.build = build } public var body: some View { build() Group { if isVisible { build() } else { Color.clear } } .onAppear { isVisible = true } .onDisappear { isVisible = false } } } But this did not help at all. So under here is the one i use now. So pleace guide me for making this work. import DIKit import CoreKit import PresentationKit import DomainKit public struct MainView: View { @Injected((any MainViewModelProtocol).self) private var viewModel private var selectedTabBinding: Binding<MainTab> { Binding( get: { viewModel.selectedTab }, set: { viewModel.selectTab($0) } ) } public init() { // No additional setup needed } public var body: some View { NavigationStack(path: Binding( get: { viewModel.navigationPath }, set: { _ in } )) { TabView(selection: selectedTabBinding) { LazyView { FeedTabView() } .tabItem { Label("Feed", systemImage: "house") } .tag(MainTab.feed) LazyView { ChatTabView() } .tabItem { Label("Chat", systemImage: "message") } .tag(MainTab.chat) LazyView { JobsTabView() } .tabItem { Label("Jobs", systemImage: "briefcase") } .tag(MainTab.jobs) LazyView { ProfileTabView() } .tabItem { Label("Profile", systemImage: "person") } .tag(MainTab.profile) } .accentColor(.primary) .navigationDestination(for: MainNavigationDestination.self) { destination in switch destination { case .profile(let userId): Text("Profile for \(userId)") case .settings: Text("Settings") case .jobDetails(let id): Text("Job details for \(id)") case .chatThread(let id): Text("Chat thread \(id)") } } } } } import SwiftUI public struct LazyView<Content: View>: View { private let build: () -> Content public init(_ build: @escaping () -> Content) { self.build = build } public var body: some View { build() } }

In our application we have two usecases for a Hotkey/Shortcut identification API/method. We have some predefined shortcuts that will ship with our MacOS application. They may or may not change dynamically, based on what the user has already set as shortcuts/hotkeys, and also to avoid any important system wide shortcuts that the user may or may not have changed. We allow the user to customize the shortcuts/hotkeys in our application, so we want to show what shortcuts the user already has in use system-wide and across their OS experience. This gives rise to the need for an API that lets us know which shortcut/hotkeys are currently being used by the user and also the current system wide OS shortcuts in use. Please let me know if there are any APIs in AppKit or SwiftUI we can use for the above

Here is a simple main.swift file of a macOS app: import SwiftUI struct ContentView: View { @State private var selectedItem = 0 @FocusState private var isListFocused: Bool var body: some View { List(0..<40, id: \.self, selection: $selectedItem) { index in Text("\(index)") .padding() .focusable() } .focused($isListFocused) .onAppear { isListFocused = true } } } func createAppWindow() { let window = NSWindow( contentRect: .zero, styleMask: [.titled], backing: .buffered, defer: false ) window.contentViewController = NSHostingController(rootView: ContentView()) window.setContentSize(NSSize(width: 759, height: 300)) window.center() window.makeKeyAndOrderFront(nil) } class AppDelegate: NSObject, NSApplicationDelegate { func applicationDidFinishLaunching(_ notification: Notification) { createAppWindow() } } let delegate = AppDelegate() NSApplication.shared.delegate = delegate NSApplication.shared.run() Try to move the focus with a keyboard slowly as shown on the GIF attached and you'll see that the focus items don't sit in a List's view.

No real intruduction for this, so I'll get to the point: All this code is on GitHub: https://github.com/the-trumpeter/Timetaber-for-iWatch But first, sorry; /* I got roasted, last time I posted; for not defining my stuff. This'll be different, but's gonna be rough; 'cuz there's lots and lots to get through: */ //this is 'Timetaber Watch App/Define (No expressions)/Courses_vDef.swift' on the GitHub: struct Course { let name: String let icon: String let room: String let colour: String let listName: String let listIcon: String let joke: String init(name: String, icon: String, room: String? = nil, colour: String, listName: String? = nil, listIcon: String? = nil, joke: String? = nil) { self.name = name self.icon = icon self.room = room ?? "None" self.colour = colour self.listName = listName ?? name self.listIcon = listIcon ?? (icon+".circle.fill") self.joke = joke ?? "" } } //this is 'Timetaber Watch App/TimeManager_fDef.swift' on the GitHub: func getCurrentClass(date: Date) -> Array<Course> { //returns the course in session depending on the input date //it is VERY long but //all you really need to know is what it returns: //basically: return [rightNow, nextUp] } /* I thought that poetry would be okay, But poorly thought things through: For I'll probably find that people online will treat my rhymes like spew. */ So into the question: I have a bunch of views, all (intendedly) watching two variables inside of a class: //Github: 'Timetaber Watch App/TimetaberApp.swift' class GlobalData: ObservableObject { @Published var currentCourse: Course = getCurrentClass(date: .now)[0] // the current timetabled class in session. @Published var nextCourse: Course = getCurrentClass(date: .now)[1] // the next timetabled class in session } ...and a bunch of views using them in different ways as follows: (Sorry, don't have the characters to define functions called in these) import SwiftUI //Github: 'Timetaber Watch App/Views/HomeView.swift' struct HomeView: View { @StateObject var data = GlobalData() var body: some View { //HERE: let icon = data.currentCourse.icon let name = data.currentCourse.name let colour = data.currentCourse.colour let room = roomOrBlank(course: data.currentCourse) let next = data.nextCourse VStack { //CURRENT CLASS Image(systemName: icon) .foregroundColor(Color(colour))//add an SF symbol element .imageScale(.large) .font(.system(size: 25).weight(.semibold)) Text(name) .font(.system(size:23).weight(.bold)) .foregroundColor(Color(colour)) .padding(.bottom, 0.1) //ROOM Text(room+"\n") .multilineTextAlignment(.center) .foregroundStyle(.gray) .font(.system(size: 15)) if next.name != noSchool.name { Spacer() //NEXT CLASS Text(nextPrefix(course: next)) .font(.system(size: 15)) Text(getNextString(course: next)) .font(.system(size: 15)) .multilineTextAlignment(.center) } }.padding() } } // Github: 'Timetaber Watch App/Views/ListView.swift' struct listTemplate: View { @StateObject var data = GlobalData() var listedCourse: Course = failCourse(feedback: "lT.12") var courseTime: String = "" init(course: Course, courseTime: String) { self.courseTime = courseTime self.listedCourse = course } var body: some View { let localroom = if listedCourse.room == "None" { "" } else { listedCourse.room } let image = if listedCourse.listIcon == "custom1" { Image(.paintbrushPointedCircleFill) } else { Image(systemName: listedCourse.listIcon) } HStack{ image .foregroundColor(Color(listedCourse.colour)) .padding(.leading, 5) Text(listedCourse.name) .bold() Spacer() Text(courseTime) Text(localroom).bold().padding(.trailing, 5) } .padding(.bottom, 1) .background(data.currentCourse.name==listedCourse.name ? Color(listedCourse.colour).colorInvert(): nil) //HERE } } struct listedDay: View { let day: Dictionary<Int, Course> var body: some View { let dayKeys = Array(day.keys).sorted(by: <) List { ForEach((0...dayKeys.count-2), id: \.self) { let num = $0 listTemplate(course: day[dayKeys[num]] ?? failCourse(feedback: "lD.53"), courseTime: time24toNormal(time24: dayKeys[num])) } } } } struct ListView: View { var body: some View { if storage.shared.termRunningGB && weekdayFunc(inDate: .now) != 1 && weekdayFunc(inDate: .now) != 7 { ScrollView { listedDay( day: getTimetableDay( isWeekA: getIfWeekIsA_FromDateAndGhost( originDate: .now, ghostWeek: storage.shared.ghostWeekGB ), weekDay: weekdayFunc(inDate: .now) ) ) } } else if !storage.shared.termRunningGB { Text("There's no term running.\nThe day's classes will be displayed here.") .multilineTextAlignment(.center) .foregroundStyle(.gray) .font(.system(size: 13)) } else { Text("No school today.\nThe day's classes will be displayed here.") .multilineTextAlignment(.center) .foregroundStyle(.gray) .font(.system(size: 13)) } } } //There's one more view but I can't fit it for characters. //On GitHub: 'Timetaber Watch App/Views/SettingsView.swift' So... THE FUNCTION: This function is called when changes are made that will affect the correct output of getCurrentClass. It is intended to reload the views and the current/next variables to reflect those changes.\ //GHub: 'Timetaber Watch App/StorageManager.swift' func reload() -> Void { @ObservedObject var globalData: GlobalData //this line is erroring, I don't know how to fix it. Is this even the best/proper way to do this? let courseData = getCurrentClass(date: .now) globalData.currentCourse = courseData[0] globalData.nextCourse = courseData[1] //Variable '_globalData' used by function definition before being initialized //that is the error appearing on those above two redefinitions. print("Setup done\n") } Thanks! -Gill

Summary: At WWDC24, a new transition was introduced by the Apple Design team (.contentTransition(.symbolEffect(.replace))) I was writing a post about it on my LinkedIn (https://www.linkedin.com/in/alex-fila/), and out of curiosity I tried multiple symbols with slashes. Many of them were not well center aligned during a new symbol effect. Some of the examples are: "speaker.fill" : "speaker.slash.fill”, "eye.fill" : "eye.slash.fill”. Please check the attached Swift file for more details and full SwiftUI View with issues. Steps to Reproduce: Create a new IOS App project in XCode. Create a new SwiftUI File. Initiate state variable: @State private var isSpeakerOn = true. Create a new image with transition: Image(systemName: isSpeakerOn ? "speaker.fill" : "speaker.slash.fill") .contentTransition(.symbolEffect(.replace)). 5. Create a switcher or set a timer with a constant variable to toggle isSpeakerOn value (see attachment file). 6. Toggle isSpeakerOn value. 7. Observe the issue (2 symbols are not well center aligned during transition). Expected Results: During transition .contentTransition(.symbolEffect(.replace)) 2 SF symbols ("speaker.fill" : "speaker.slash.fill”) are well center aligned. Actual Results: During transition (when slash slowly appears on top of SF symbol), the main symbol is moved a few points up, creating a decentralized effect and making the user experience feel inconsistent. Notes: There are 200 SF Symbols with .slash that might be affected. It happens on latest Xcode and macOS versions, and could be a top priority for the Apple Design Team. import SwiftUI struct BUG: View { @State private var isSpeakerOn = true let timer = Timer.publish(every: 1.5, on: .main, in: .common).autoconnect() let columns = [ GridItem(.flexible(), spacing: 20), GridItem(.flexible(), spacing: 20) ] var body: some View { LazyVGrid(columns: columns, spacing: 60) { Text("❌").font(.system(size: 100)) Image(systemName: isSpeakerOn ? "speaker.fill" : "speaker.slash.fill") .font(.system(size: 200)) .frame(width: 200, height: 100, alignment: .center) .contentTransition(.symbolEffect(.replace)) .symbolRenderingMode(.palette) .foregroundStyle( Color.primary, Color.accentColor) .onReceive(timer) { _ in withAnimation(.spring(response: 0.3, dampingFraction: 0.7)) {isSpeakerOn.toggle()}} Text("✅").font(.system(size: 100)) Image(systemName: isSpeakerOn ? "bell.fill" : "bell.slash.fill") .font(.system(size: 170)) .frame(width: 150, height: 150, alignment: .center) .contentTransition(.symbolEffect(.replace)) .symbolRenderingMode(.palette) .foregroundStyle( Color.primary, Color.accentColor) .onReceive(timer) { _ in withAnimation(.spring(response: 0.3, dampingFraction: 0.7)) {isSpeakerOn.toggle()}} Text("❌").font(.system(size: 100)) Image(systemName: isSpeakerOn ? "eye.fill" : "eye.slash.fill") .font(.system(size: 150)) .frame(width: 200, height: 100, alignment: .center) .contentTransition(.symbolEffect(.replace)) .symbolRenderingMode(.palette) .foregroundStyle( Color.primary, Color.accentColor) .onReceive(timer) { _ in withAnimation(.spring(response: 0.3, dampingFraction: 0.7)) {isSpeakerOn.toggle()}} } .padding(40) }} #Preview { BUG() }

I'm trying to implement the same UI used by the Settings app on iPad: a split view with two columns that are visible at all times. This code produces the layout i want, but I would like to hide the "toggle sidebar visibility" button that the system introduces. Is there a SwiftUI API I can use to hide this button? Maybe an alternate way to setup views that tells the system that the button is not necessary? struct SomeView: View { var body: some View { NavigationSplitView( columnVisibility: .constant(.all), sidebar: { Text("sidebar") }, detail: { Text("detail") } ) .navigationSplitViewStyle(.balanced) } }

I'm implementing a Map with user location customization in SwiftUI using iOS 17+ MapKit APIs. When using the selection parameter with Map, the default blue dot user location becomes tappable but shows an empty annotation view. However, using UserAnnotation makes the location marker non-interactive. My code structure: import SwiftUI import MapKit struct UserAnnotationSample: View { @State private var position: MapCameraPosition = .userLocation(fallback: .automatic) @State private var selectedItem: MapSelection<MKMapItem>? var body: some View { Map(position: $position, selection: $selectedItem) { // UserAnnotation() } .mapControls { MapUserLocationButton() } } } Key questions: How can I replace the empty annotation view with a custom avatar when tapping the user location? Is there a way to make UserAnnotation interactive with selection? Should I use tag modifier for custom annotations? What's the proper way to associate selections?

I'd like to create a custom SwiftUI view that supports extracting its title string along with the localization comment into a string catalog. Like the SwiftUI Text view does. I have a view with an init similar to the localization init of Text. But it looks like I'm missing something obvious. Two questions: How do I get the actual localized string using a LocalizedStringKey? Why is the comment not picked up and added to the string catalog? // 1) My custom view with localization support: // I'd like to build a view which supports extraction of strings into a string catalog like the SwiftUI `Text` view does. struct MyLocalizableView: View { private var localizedTitle: String init (_ titleKey: LocalizedStringKey, table: String? = nil, bundle: Bundle? = nil, comment: StaticString? = nil) { // PROBLEM I: // The following line does not work. I is a fantasy call. It depicts my idea how I would expect it to work. // My question is: How do I get the actual localized string using a `LocalizedStringKey`? self.localizedTitle = String(localizedKey: titleKey, table: table, bundle: bundle, comment: comment) } var body: some View { // At this point I want to do an operation on an actual string and not on a LocalizedStringKey. So I can't just pass the LocalizedStringKey value along. // Do `isEmpty` or some other operation on an actual string: if localizedTitle.isEmpty { Text("Show one thing") } else { Text("Show another thing") Text("** \(localizedTitle) **") } } } // 2) The call site: struct ContentView: View { var body: some View { // PROBLEM II: "My title key" is picked up and is extracted into the string catalog of the app. But the comment is NOT! MyLocalizableView("My title key", comment: "The title of the view...") .padding() } }

Whenever I start editing TextField or while editing TextField, Xcode shows this worning, and takes a few seconds to show the keyboard. There is no 'availabilityDetailedInfo' in my source code, and I could not find similar errors on the internet. Can't find or decode availabilityDetailedInfo unavailableReasonsHelper: Failed to get or decode availabilityDetailedInfo Can't find or decode reasons unavailableReasonsHelper: Failed to get or decode unavailable reasons as well Can't find or decode availabilityDetailedInfo unavailableReasonsHelper: Failed to get or decode availabilityDetailedInfo Can't find or decode reasons unavailableReasonsHelper: Failed to get or decode unavailable reasons as well

import SwiftUI struct Product: Identifiable { let id = UUID() let name: String let pricePerKg: Double } struct ContentView: View { @State private var selectedProduct: Product? @State private var quantity: Double = 1.0 @State private var orderDate = Date() @State private var showingConfirmation = false let products = [ Product(name: "Lamb", pricePerKg: 15.0), Product(name: "Beef", pricePerKg: 20.0), Product(name: "Chicken", pricePerKg: 10.0) ] var body: some View { NavigationView { Form { Section(header: Text("Select Meat")) { Picker("Meat Type", selection: $selectedProduct) { ForEach(products) { product in Text(product.name).tag(product as Product?) } } } if let selectedProduct = selectedProduct { Section(header: Text("Quantity (kg)")) { Stepper(value: $quantity, in: 0.5...10, step: 0.5) { Text("\(quantity, specifier: "%.1f") kg") } } Section(header: Text("Delivery Date")) { DatePicker("Select Date", selection: $orderDate, in: Date()..., displayedComponents: .date) } Section(header: Text("Total Price")) { Text("$\(selectedProduct.pricePerKg * quantity, specifier: "%.2f")") } Button("Confirm Order") { showingConfirmation = true } .alert(isPresented: $showingConfirmation) { Alert(title: Text("Order Confirmed"), message: Text("You have ordered \(quantity, specifier: "%.1f") kg of \(selectedProduct.name) for \(orderDate.formatted(date: .long, time: .omitted))."), dismissButton: .default(Text("OK"))) } } } .navigationTitle("Halal Butcher") } } } @main struct HalalButcherApp: App { var body: some Scene { WindowGroup { ContentView() } } }

Hey, It seems that when Apple Intelligence is enabled, scrolling can become completely broken when using an app. This is affecting several apps, including telegram: https://github.com/TelegramMessenger/Telegram-iOS/issues/1570?reload=1 It seems that UIPanGesture is affected by this. (MapKit stop being able to scroll too). Killing + Relaunching the app fix the problem. Bug report ID, containing a video: FB16780431

I am developing an app in swiftUI using Xcode 12.3, deployment target iOS 14.0. The launch screen is setup through info.plist by specifying 'background color' and 'image name'. The file used in 'image name' is from Assets catalog. (PNG format, size300 x 300 and corresponding @2x and @3x resolutions) What I have observed, when the app is installed for the first time the launch image is centered and have original resolutions but all subsequent launches show launch images stretched to cover full screen. Any ideas why this is happening and how to have more consistent behavior either way? I have tried 'respect safe area' option but it does not make a difference. Thank you.

I have a NSViewController as the root view and have a switui view embedded in it via NSHostingView. override func loadView() { self.view = NSHostingView(rootView: SwiftUiView()) } } In the SwiftUiView, I have a TextField and an NSTextView embedded using NSViewRepresentable, along with a few buttons. There is also a menu: Menu { ForEach(menuItems), id: \.self) { item in Button { buttonClicked() } label: { Text(item) } } } label: { Image("DropDown") .contentShape(Rectangle()) .frame(maxWidth: .infinity) .frame(maxHeight: .infinity) } The NSTextView and TextField work fine, and I can type in them until I click on the menu or show an alert. After that, I can no longer place my cursor in the text fields. I am able to select the text but not type in it. When I click on the NSTextView or TextField, nothing happens. At first, I thought it was just a cursor visibility issue and tried typing, but I received an alert sound. I've been trying to fix this for a couple of days and haven't found any related posts. Any help would be greatly appreciated.

The issue is, I cannot auto acquire bluetooth keyboard focus in PHPickerViewController after enabling 'Full Keyboard Access' in my IPhone 14 with iOS version 18.3.1. The keyboard focus in PHPickerViewController will show, however, after I tapped on the blank space of the PHPickerViewController. How to make the focus on at the first place then? I'm using UINavigationController and calling setNavigationBarHidden(true, animated: false). Then I use this controller to present PHPickerViewController using some configuration setup below. self.configuration = PHPickerConfiguration() configuration.filter = .any(of: filters) configuration.selectionLimit = selectionLimit if #available(iOS 15.0, *), allowOrdering { configuration.selection = .ordered } configuration.preferredAssetRepresentationMode = .current Finally I set the delegate to PHPickerViewController and call UINavigationController.present(PHPickerViewController, animated: true) to render it. Also I notice animation showing in first video then disappear.

This is an issue that occurred while using SwiftUI. Cannot find '$state' in scope The other view finds properties normally. May I know why the error is occurring? The following code is the full text of the code that causes problems. import SwiftUI @Observable class HomeState { var title: String = "Home" } struct HomeView: View { @Binding var state: HomeState var body: some View { Text(state.title) } } #Preview { @Previewable @State var state: HomeState = .init() HomeView(state: $state) /// Error: Cannot find '$state' in scope } The same error occurs when using the String type rather than the object. What did I do wrong?

I have a simple SwiftUI project with two basic build configurations (Debug, Release) as shown below. I now choose Build > Scheme > Edit Scheme under Product and select Release as the current build configuration as shown below. And the Preview canvas exhibit errors. If I click on the Diagnostics button, it says under PREVIEW UPDATE ERROR OptimizationLevelError: not building -Onone ”BuildSchemeCrazyDaughter.app” needs -Onone Swift optimization level to use previews (current setting is -O) What does that mean and why don't I get the preview for the Release build configuration? Thanks.

Perhaps I just have the wrong expectations, but I discovered some odd behavior from SwiftData that sure seems like a bug to me... If you make any change to any SwiftData model object — even just setting a property to its current value — every SwiftUI view that uses SwiftData is rebuilt. Every query and every entity reference, even if the property was set on a model class that is completely unrelated to the view. SwiftUI does such a good job of optimizing UI updates that it's hard to notice the issue. I only noticed it because the updates were triggering my debug print statements. To double-check this, I went back to Apple's new iOS app template — the one that is just a list of dated items — and added a little code to touch an unrelated record in the background: @Model class UnrelatedItem { var name: String init(name: String) { self.name = name } } @main struct jumpyApp: App { var sharedModelContainer: ModelContainer = { let schema = Schema([ Item.self, UnrelatedItem.self ]) let modelConfiguration = ModelConfiguration(schema: schema, isStoredInMemoryOnly: false) do { return try ModelContainer(for: schema, configurations: [modelConfiguration]) } catch { fatalError("Could not create ModelContainer: \(error)") } }() init() { let context = sharedModelContainer.mainContext // Create 3 items at launch so we immediately have some data to work with. if try! context.fetchCount(FetchDescriptor<Item>()) == 0 { for _ in 0..<3 { let item = Item(timestamp: Date()) context.insert(item) } } // Now create one unrelated item. let unrelatedItem = UnrelatedItem(name: "Mongoose") context.insert(unrelatedItem) try? context.save() // Set up a background task that updates the unrelated item every second. Task { while true { try? await Task.sleep(nanoseconds: 1_000_000_000) Task { @MainActor in // We don't even have to change the name or save the contxt. // Just setting the name to the same value will trigger a change. unrelatedItem.name = "Mongoose" } } } } var body: some Scene { WindowGroup { ContentView() } .modelContainer(sharedModelContainer) } } I also added a print statement to the ContentView so I could see when the view updates. struct ContentView: View { @Environment(\.modelContext) private var modelContext @Query private var items: [Item] var body: some View { NavigationSplitView { List { let _ = Self._printChanges() ... The result is that the print statement logs 2 messages to the debug console every second. I checked in iOS 17, 18.1, and 18.2, and they all behave this way. Is this the intended behavior? I thought the whole point of the new Observation framework in iOS 17 was to track which data had changed and only send change notifications to observers who were using that data.

I am trying to implement "Live activity" to my app. I am following the Apple docs. Link: https://developer.apple.com/documentation/activitykit/displaying-live-data-with-live-activities Example code: struct LockScreenLiveActivityView: View { let context: ActivityViewContext<PizzaDeliveryAttributes> var body: some View { VStack { Spacer() Text("\(context.state.driverName) is on their way with your pizza!") Spacer() HStack { Spacer() Label { Text("\(context.attributes.numberOfPizzas) Pizzas") } icon: { Image(systemName: "bag") .foregroundColor(.indigo) } .font(.title2) Spacer() Label { Text(timerInterval: context.state.deliveryTimer, countsDown: true) .multilineTextAlignment(.center) .frame(width: 50) .monospacedDigit() } icon: { Image(systemName: "timer") .foregroundColor(.indigo) } .font(.title2) Spacer() } Spacer() } .activitySystemActionForegroundColor(.indigo) .activityBackgroundTint(.cyan) } } Actually, the code is pretty straightforward. We can use the timerInterval for count-down animation. But when the timer ends, I want to update the Live Activity view. If the user re-opens the app, I can update it, but what happens if the user doesn't open the app? Is there a way to update the live activity without using push notifications?