Hello, I've created an app that follows the user as they navigate through public transport. I want the camera to follow the user and at the same time I want the camera distance (elevation) to change dynamically depending on speed and other factors. I've tried a first approach using camera keyframes, but I've noticed a lot of crashes when the app comes back to the foreground. .mapCameraKeyframeAnimator(trigger: cameraFrame) { camera in KeyframeTrack(\MapCamera.centerCoordinate) { LinearKeyframe(cameraFrame.center, duration: cameraFrame.duration, timingCurve: cameraFrame.curve) } KeyframeTrack(\MapCamera.distance) { LinearKeyframe(cameraFrame.distance, duration: cameraFrame.duration, timingCurve: cameraFrame.curve) } } Some logs mention wrong center coordinates (nan, nan) but when I print them, it's show me valid coordinates. I've also tried manually setting the camera for each position update, but the result is not smooth. position = .camera( .init(.init( lookingAtCenter: newPosition, fromDistance: cameraElevation, pitch: .zero, heading: .zero) ) ) What's the best way to achieve this?

I have an issue using RealityView to show two screens of AR, while I did succeed to make it as a non AR but now my code not working. Also it is working using Storyboard and Swift with SceneKit, so why it is not working in RealityView? import SwiftUI import RealityKit struct ContentView : View { var body: some View { HStack (spacing: 0){ MainView() MainView() } .background(.black) } } struct MainView : View { @State var anchor = AnchorEntity() var body: some View { RealityView { content in let item = ModelEntity(mesh: .generateBox(size: 0.2), materials: [SimpleMaterial()]) content.camera = .spatialTracking anchor.addChild(item) anchor.position = [0.0, 0.0, -1.0] anchor.orientation = .init(angle: .pi/4, axis:[0,1,1]) // Add the horizontal plane anchor to the scene content.add(anchor) } } }

Hello bro, I create a custom button like this way: UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; button.titleLabel.font = [UIFont fontWithName:fontName size:fontSize]; Then I receive any issue from the third crash collection platform: 0 libobjc.A.dylib 0x000000018fd1e694 _objc_moveWeak + 196 1 libobjc.A.dylib 0x000000018fd1e694 _objc_moveWeak + 196 2 CoreFoundation 0x0000000197e7da94 __CFXNotificationRegistrarAddObserver + 392 3 CoreFoundation 0x0000000197e7c864 _CFXNotificationRegistrarAdd + 580 4 CoreFoundation 0x0000000197e7c040 __CFXNotificationRegisterObserver + 248 5 UIKitCore 0x000000019a1b6c98 _UILabelCommonInit + 188 6 UIKitCore 0x000000019a1b69fc -[UILabel _commonInit] + 520 7 UIKitCore 0x000000019a1cdf88 -[UILabel initWithFrame:] + 56 8 UIKitCore 0x000000019a24824c -[UIButtonLabel _initWithFrame:button:] + 100 9 UIKitCore 0x000000019a247c14 -[UIButtonLegacyVisualProvider _newLabelWithFrame:] + 84 10 UIKitCore 0x000000019a15ee80 -[UIButtonLegacyVisualProvider _setupTitleViewRequestingLayout:] + 84 11 UIKitCore 0x000000019a15d81c -[UIButtonLegacyVisualProvider titleViewCreateIfNeeded:] + 44 12 UIKitCore 0x000000019a1cfa78 -[UIButton titleLabel] + 36 So would you please tell me how to avoid it?

Working on a macOS app. I need to display user-added images as a background to the view, with all of: Tiling (auto repeat in both axes) Scaling (user-configured scale of the image) Offset (user-configured offset) I've been able to achieve scaling and offset with: Image(nsImage: nsImage) .scaleEffect(mapImage.scale) .offset(mapImage.offset) .frame(width: scaledImageSize.width, height: scaledImageSize.height) But when I try to incorporate tiling into that with .resizable(resizingMode: .tile) everything breaks. Is there a way to position the "anchor" of an image, scale it, and tile it in both axes to fill a container view?

we are migrating our app to support Arabic language support but the requirement is we want the calendar/date object to display as missed. That is all the numbers in english digits and rest all the words like days, months should be in Arabic. I tried few options but at the end its resulting everything is in Arabic or in English but not the mixed as expected. Attaching the expected behavior.

You'll have to forgive me, I am still pretty new to Swift, but I'm really struggling to figure out what I'm doing wrong or how I can fix it. I'm working on an app that generates an image from some views and then exports that image, but it always returns this very vague error: The operation couldn’t be completed. (SwiftUI.FileExportOperation.Error error 0.) Here's most of the program: import SwiftUI import UniformTypeIdentifiers struct ContentView: View { @State private var backgroundColor = Color.black @State private var fileExporterIsPresented = false @State private var image: NSImage? @State private var fileExporterErrorAlertIsPresented = false @State private var fileExporterErrorDescription: String? var body: some View { let wallpaper = Rectangle() .foregroundStyle(backgroundColor) .aspectRatio(16 / 9, contentMode: .fit) VStack { wallpaper .clipShape(.rect(cornerRadius: 10)) .overlay { RoundedRectangle(cornerRadius: 10) .strokeBorder(.separator, lineWidth: 5) } ColorPicker("Background Color", selection: $backgroundColor, supportsOpacity: false) Button("Generate Wallpaper") { let renderer = ImageRenderer(content: wallpaper.frame(width: 3840, height: 2160)) image = renderer.nsImage fileExporterIsPresented = true } .fileExporter( isPresented: $fileExporterIsPresented, item: image, contentTypes: [UTType.heic, UTType.png] ) { result in if case .failure(let error) = result { fileExporterErrorDescription = error.localizedDescription fileExporterErrorAlertIsPresented = true } } .alert("File Exporter Failure", isPresented: $fileExporterErrorAlertIsPresented, actions: { Button("OK") {} }, message: { if let fileExporterErrorDescription { Text(fileExporterErrorDescription) } }) .dialogSeverity(.critical) } .padding() } } #Preview { ContentView() }

When using the NavigationSplitView with an inspector containing a list which has swipeActions and onDelete, item actions behave erratically. It seems that there is a gesture conflict between the swipe action and the NavigationSplitView. Is there any modifier that could be used to force gesture focus on the inspector? struct Animal: Hashable { var name : String } struct ContentView: View { @State private var isShowingInspector = false var body: some View { NavigationSplitView { Text("Main") } detail: { Text("Detail") .inspector(isPresented: $isShowingInspector) { InspectorView() .toolbar { ToolbarItem(placement: .primaryAction) { Button { isShowingInspector.toggle() } label: { Label("Preferences", systemImage: "gearshape") } } } } } } } struct InspectorView: View { @State var animals = [ Animal(name: "Dog"), Animal(name: "Cat"), Animal(name: "Parrot") ] @State private var selectedAnimal: Animal? var body: some View { NavigationStack { Text(selectedAnimal?.name ?? "Select an animal") List(selection: $selectedAnimal) { Section { ForEach(animals, id: \.self) { animal in Text(animal.name) .swipeActions(edge: .leading) { Button("Edit") { } .tint(.green) } } .onDelete { indexSet in } } header: { Text("Animals") } } } } }

We are having issues with implementing a List that has Views in it that contain a Textfield. The criteria we are trying to achieve is Select to edit the quantity of a product Auto focus on the row with that textfield, with the textfield's contents selected Display/Dismiss the keyboard Mask other rows in the list while interacting with a qty field We explored many routes and are looking for direction on what the designated approach is. This originally was a Tech Support Incident, and I was instructed to post here. There were 2 working project examples available if needed. In an implementation that has the FocusState on the parent view, we see collisions in animation / weird jumpiness // MARK: - Constant enum Constant { static let logTag = "AddReplenishmentProductView" } @Binding var state: ContentViewState // MARK: - Private Properties @State private var focusedLineItemId: String? // MARK: - Life cycle var body: some View { VStack { replenishmentProductList } .background(.tertiary) .navigationTitle("Add Products") .navigationBarTitleDisplayMode(.inline) .toolbarBackground(.visible, for: .navigationBar) } // MARK: - Private Computed properties @ViewBuilder private var replenishmentProductList: some View { ScrollViewReader { proxy in List { let list = Array(state.lineItems.enumerated()) ForEach(list, id: \.1.product.id) { (index, lineItem) in RowView( lineItem: $state.lineItems[index], focusedLineItemId: $focusedLineItemId ) .id(lineItem.id.uuidString) .listRowInsets(EdgeInsets(top: 0, leading: 0, bottom: 0, trailing: 0)) .alignmentGuide(.listRowSeparatorLeading) { _ in return 0 } //  Blocks all the other rows that we are not focusing on. .maskingOverlay(focusId: $focusedLineItemId, elementId: "\(lineItem.id)") } .listSectionSeparator(.hidden) } .listStyle(.plain) .scrollDismissesKeyboard(.never) .scrollContentBackground(.hidden) /*  We are looking for a solution that doesn't require us to have this onChange modifier whenever we want to change a focus. */ .onChange(of: focusedLineItemId) { guard let lineItemId = focusedLineItemId else { return } /*  We need to scroll to a whole RowView so we can see both done and cancel buttons. Without this, the focus will auto-scroll only to the text field, due to updating FocusState. We are experiencing weird jumping issues. It feels like the animations for focus on text field and RowView are clashing between each other. To fix this, we added a delay to the scroll so the focus animation completes first and then we scroll to the RowView. However, when we attempt to focus on a row that is partially shown, sometimes the RowView won't update it's focus and won't focus ultimately on the TextField until we scroll. */ DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { withAnimation { //  We need to add the withAnimation call to animate the scroll to the whole row. proxy.scrollTo(lineItemId, anchor: .top) } } } } } } In an implementation where the FocusState is on the row views, we see issues with actually being able to focus. When quantity field we tap is located on a row near the top/bottom of the screen it does not look to be identified correctly, and the ability to scrollTo / the keyboard being presented are broken. struct ContentView: View { // MARK: - Constant enum Constant { static let logTag = "AddReplenishmentProductView" } @Binding var state: ContentViewState // MARK: - Private Properties @State private var focusedLineItemId: String? @FocusState private var focus: String? // MARK: - Life cycle var body: some View { VStack { replenishmentProductList } .background(.tertiary) .navigationTitle("Add Products") .navigationBarTitleDisplayMode(.inline) .toolbarBackground(.visible, for: .navigationBar) } // MARK: - Private Computed properties @ViewBuilder private var replenishmentProductList: some View { ScrollViewReader { proxy in List { let list = Array(state.lineItems.enumerated()) ForEach(list, id: \.1.product.id) { (index, lineItem) in RowView( lineItem: $state.lineItems[index], focusedLineItemId: $focusedLineItemId, focus: $focus ) .id(lineItem.id.uuidString) .listRowInsets(EdgeInsets(top: 0, leading: 0, bottom: 0, trailing: 0)) .alignmentGuide(.listRowSeparatorLeading) { _ in return 0 } //  Blocks all the other rows that we are not focusing on. .maskingOverlay(focusId: $focusedLineItemId, elementId: "\(lineItem.id)") } .listSectionSeparator(.hidden) } .listStyle(.plain) .scrollDismissesKeyboard(.never) .scrollContentBackground(.hidden) /*  We are looking for a solution that doesn't require us to have this onChange modifier whenever we want to change a focus. */ .onChange(of: focusedLineItemId) { /*  We need to scroll to a whole RowView so we can see both done and cancel buttons. Without this, the focus will auto-scroll only to the text field, due to updating FocusState. However, we are experiencing weird jumping issues. It feels like the animations for focus on text field and RowView are clashing between each other. */ focus = focusedLineItemId guard let lineItemId = focusedLineItemId else { return } withAnimation { //  We need to add the withAnimation call to animate the scroll to the whole row. proxy.scrollTo(lineItemId, anchor: .top) } } } } }

Development environment: Xcode 16.1, macOS 15.1 (24B83) OS version: iOS iOS 17.5 and above When NavigationStack is presented by a sheet, and navigationDestination API is being used for navigation within the stack, the sheet content is forced to be reevaluated when app is in background. Sample Project import SwiftUI struct TestView: View { var id: Int @State private var isLoading = false @State private var presentSheet = false var body: some View { let _ = Self._printChanges() VStack { if isLoading { ProgressView() } else { VStack { Text("View: \(id)") Text("Not loading") Button("Present Sheet in NavStack") { presentSheet = true } NavigationLink("Show Link", value: id * 100) } } } .sheet( isPresented: $presentSheet, content: { NavigationStack { TestView(id: self.id + 1) // Comment this block out and note the view no longer reloads when app is in background when there's > 1 sheet modals .navigationDestination(for: Int.self, destination: { num in TestView(id: num) }) } } ) .task { isLoading = true defer { isLoading = false } try? await Task.sleep(for: .seconds(1)) } } } struct ContentView: View { var body: some View { let _ = Self._printChanges() VStack { content .padding() } } var content: some View { VStack { NavigationStack { VStack { Image(systemName: "globe") .imageScale(.large) .foregroundStyle(.tint) TestView(id: 0) } .navigationDestination(for: Int.self, destination: { num in TestView(id: num) }) } } } } Steps to reproduce: To reproduce the issue in the sample project: Tap on present sheet in navstack button to invoke View #1 presented in sheet Put the app into multitasking mode by tapping on the simulator home button twice Observe that console does not emit debug messages on SwiftUI View change. Also observe that there was no loading in the view Tap on present sheet in navstack button again to invoke View #2 presented in sheet Repeat step #2, but this time observe that console does emit debug message that SwiftUI View were changed due to the following: TestView: @self, @identity, _isLoading, _presentSheet changed. TestView: _isLoading changed. TestView: _isLoading changed. To remove the issue: 7. Comment out the block on navigationDestination. Recompile the app and run it in simulator 8. Repeat step 2-5. Note this time the console does not emit debug message that SwiftUI View were changed.

I have a Split View with the sidebar, content, and detail. Everything is working, but when I select on a NavigationLink in my detail view, the back button is seen next to the title above the content view. I want that back button to be displayed in the top bar on the left side of the detail view. I was expecting it to do this automatically, but I must be missing something. This is where I want it to appear. This is where it appears. I made a simplified version of my code, because it would be too much to post but this has the same behavior. struct TestView: View { enum SidebarSelections { case cycles } @State private var sidebarSelection: SidebarSelections = .cycles var body: some View { NavigationSplitView(sidebar: { List(selection: $sidebarSelection, content: { Label("Cycles", systemImage: "calendar") .tag(SidebarSelections.cycles) }) }, content: { switch sidebarSelection { case .cycles: NavigationStack { List { // Displayed in Content NavigationLink("Cycle link", destination: { // Displayed in the Detail NavigationStack { List { NavigationLink("Detail Link", destination: { Text("More details") }) } } }) } } } }, detail: { ContentUnavailableView("Nothing to see here", systemImage: "cloud") }) } } Is what I want to do possible? Here is a Stack Overflow post that had it working at one point.

For the last 2 version (18.2 beta 1 and 18.2. beta 2) I haven't been able to successfully update to either of them. I have been running Sequoia on an external drive for testing purposes and didn't have this problem with any of the 18.1 versions. I'm currently on 18.1 (public) and when I download the update for 18.2 beta 2, the update appears to run (takes about 30 mins), preparing update, the restarts. When the Mac restarts, it just boots straight back to 18.1 without having applied the update.

I am using a Mac Catalyst with SwiftUI for our document-based app with DocumentGroup. The issue is that when we create a new document or open an existing one, the opened view is completely blank. It is only blank/empty when the "Optimzie for Mac" is checked. If it is "Scaled t oMatch iPad", then it works well. Xcode 16.1 macOS 15.1 struct DocumentGroupTestApp: App { var body: some Scene { DocumentGroup(newDocument: WritingAppDocument()) { file in TestView() // it is empty when it gets opened. It does not work if the option "Optimize for Mac" is checked. If it is scale iPad, then it works. } } } struct TestView: View { var body: some View { Text("Hello, World!") } }

I used to be able to display all app icon assets in the UI using UIImage(named: String) However, it seems this method has been deprecated in Xcode 16 and the iOS 18. How can I display app icon assets in the UI now, without duplicating the assets?

Hello, I'm seeing a strange error on another user's device where the SwiftUI file importer doesn't do anything at all. When selecting multiple files and hitting "open", the importer just freezes. Here's a video showing the problem: https://streamable.com/u5grgy I'm unable to replicate on my own device, so I'm not sure what could be going on. I have startAccessingSecurityScopedResource and stopAccessingSecurityResource everywhere I access a file from fileImporter as well.

I made a LockScreen ControlWidget with CameraCaptureIntent, but I found launch my main app from Control Widget, SceneDelegate will be called like below: sceneWillEnterForeground sceneDidBecomeActive sceneWillResignActive sceneDidBecomeActive sceneWillResignActive be called, is it normal? it make my app camera launch with a delay.

Hi, In this year WWDC 2024 conference a new update to SwiftData allows it to connect to other kind of data sources or databases, at ;east this is what I understood, since then didn't see any tutorial or help document on how to do that for example connecting SwiftData to Firebase if possible ? Kind Regards

Hi When connecting a SwiftData module property to a SwiftUI view such as a text field and the field changes by user the property get updated in the SwiftData database, now suppose I want to run a validation code or delay updates to Database till use click a submit button how to do that ? delay those auto updates if we can name it ? Kind Regards Code Example import SwiftUI import SwiftData struct GListSel2: View { @Bindable var patient: Patient var body: some View { HStack { TextField("Gender", text: $patient.gender) } } }

Hello! Is there any way to detect when the animation appearing in iOS 18 on switching tab items completes? This applies to TabView in SwiftUI.

在webview全屏打开Video视频前后获取设备的宽高结果不同 [UIScreen mainScreen].bounds对应的设备逻辑分辨率发生变化，导致根据分辨率显示的页面显示错误

I'm currently migrating a midsize (20k LOC) project to Swift structured concurrency. With complete checking turned on, it currently builds with only two warnings, both of which are related to the QLPreviewControllerDelegate protocol: "Main actor-isolated instance method 'previewControllerDidDismiss' cannot be used to satisfy nonisolated protocol requirement; this is an error in the Swift 6 language mode" as well as the same warning but substituting 'previewController(_:transitionViewFor:)' for the method name. I'm confused as to how to make these nonisolated, as they use UIKit classes/subclasses as arguments and/or return types.