“swiftui”

I’m running into a macOS window restoration behavior issue where viewDidAppear (AppKit) or onAppear (SwiftUI) fires before the window’s final restored size is applied. AppKit example class MyViewController: NSViewController { override func viewDidLayout() { print(viewDidLayout: (view.bounds.size)) } override func viewDidAppear() { print(viewDidAppear: (view.bounds.size)) } } Logs on launch: viewDidAppear: (480.0, 270.0) viewDidLayout: (480.0, 270.0) viewDidLayout: (556.0, 476.0) viewDidLayout: (556.0, 476.0) The correct restored size is (556.0, 476.0), but viewDidAppear initially reports the old default size (480.0, 270.0). SwiftUI equivalent struct MyView: View { var body: some View { GeometryReader { geo in VStack {} .onAppear { print(onAppear: (geo.size)) } .onChange(of: geo.size) { print(onChange: (geo.size)) } } } } Logs on launch: onAppear: (900.0, 450.0) onChange: (680.0, 658.0) Problem I need to run some setup code: Only once After the view/window has its correct restored size Withou

I am building a Swift Playgrounds App project on iPad running iPadOS 26.0.1 using the latest version of Swift Playgrounds. I need to access Core Location for a plant location logging app. What I have done: • Created an App project (not a Playground) in Swift Playgrounds • Enabled ‘Core Location When in Use’ in the app capabilities (accessed by tapping the app name) • Implemented a CLLocationManager with CLLocationManagerDelegate • Called manager.requestWhenInUseAuthorization() from .onAppear in a SwiftUI view • Called manager.startUpdatingLocation() immediately after The problem: The location permission prompt never appears when the app runs. The app does not appear in Settings → Privacy & Security → Location Services at all. There are no error messages or crashes — the app simply never requests location access. What I have ruled out: • The capability IS enabled in Swift Playgrounds app settings • The app runs without errors otherwise • This is an App project, not a classic Playground, so it shou

When I set up a toolbar item group with multiple options and set the controlGroupStyle as .palette, and when one of the options are supposed to present a view controller, I get the following error Attempt to present on (from ) which is already presenting <_UIContextMenuActionsOnlyViewController: 0x1035c19d0>. So basically the context menu we see is under the hood a view controller that is being presented. Is there a right way of fixing it, or is it maybe something that will be fixed by Apple? This is how I set up the ToolbarItemGroup on SwiftUI and the view model ultimately presents another UINavigationController that has a UIHostingController as its view controller: .toolbar { ToolbarItemGroup(placement: .topBarTrailing) { Button(ft_commons_edit.localised, systemImage: pencil) { viewModel.didTapEditAction() } Button(ft_commons_delete.localised, systemImage: trash) { viewModel.didTapDeleteAction() } } label: { Image(edit-icon) .resizable() .frame(width: 24.0, height: 24.0) } } .controlGroupSt

When applying the .accessibilityIdentifier(_:) modifier to a SwiftUI TextField, the identifier is correctly added to the SwiftUI Accessibility Tree (visible in Accessibility Inspector), but it is not assigned to the accessibilityIdentifier property of the underlying UITextField instance. This causes issues for developers who monitor global notifications, such as UITextField.textDidChangeNotification. When a notification is received, the object (the UITextField) has a nil identifier, making it impossible to programmatically determine which specific text field triggered the event. Steps to Reproduce: Create a SwiftUI view containing a TextField. Apply .accessibilityIdentifier(TargetTextField) to that TextField. Set up an observer (via NotificationCenter or onReceive) for UITextField.textDidChangeNotification. Run the app and type into the text field. Inspect the accessibilityIdentifier property of the UITextField object provided by the notification. Expected Result: The UITextField.ac

I using SwiftUI to wrap a NSTextView to support rich text editing. I created a subclass ImageAttachment and provided my own viewProvider and attachmentView. The insertion of the image works fine, but when I typing in the same paragraph of the image, the image will flicker during typing and pause. after typing it sometimes just display nothing, but after refresh or click other places, the image shows. The interesting part is if I typing in other paragraph, the image attachment displays well. I don't think the flicker should happen while typing in the same paragraph of the attachment, but not sure if there is a way to enforce the layout stable for the paragraph?

I have a SwiftUI view with: @State var url: URL? @State var isShowingBrowser: Bool func displayURL(url: URL) { self.url = url self.isShowingBrowser = true } var body: some View { Group { // ...... } .sheet(isPresented: $isShowingBrowser) { // browser view } } The first time I call displayBrowser, an empty browser sheet appears, with no URL. The second time, it works. It doesn't matter if I reorder the assignments in displayURL. It's like the view refreshes once with a nil URL and isShowingBrowser true, then refreshes again with the URL value. If I move both variable to an @Observable view model class then it works fine - that update seems to happen atomically. For my own project, the view model is the right way to do this, but I was confused by this behavior. What am I missing about SwiftUI?

I’m seeing a rendering issue with UITabBarController on iOS 26 (Liquid Glass), and I’d like to confirm whether others can reproduce this or have a workaround. Summary If a UITabBarController is recreated while it is fully hidden behind a fullscreen modal, the tab bar renders incorrectly after dismissal. Selected tab becomes nearly invisible Unselected tabs appear to show both selected and unselected tint colors Looks like multiple rendering states are composited incorrectly This only happens with: iOS 26 (Liquid Glass enabled) UIKit UITabBarController It does not reproduce with SwiftUI TabView. Minimal Reproduction Code This is a complete, minimal example: import UIKit // MARK: - Root class RootViewController: UIViewController { private var tabBar: UITabBarController? private var modalPresented = false override func viewDidLoad() { super.viewDidLoad() installTabBar() } override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) // Present once on first appear, simulating an app-laun

During refactoring of an app I made a typo which leads to a misleading error message in Xcode 26.4. I could reproduce it with a small sample code in Swift Playground. Is it a bug which should be reported? Details: I have an array containing two strings. Using a ForEach loop is fine: ForEach(appData.dataArray, id: .self) { value in Text((value.subject)t(value.room)) } but with a typo in the Text line I got an error on the ForEach line: ForEach(appData.dataArray, id: .self) { value in --> Cannot convert value of type '[MyArray]' to expected argument type 'Binding' Text((value.subject)t(value.subject.room)) } Complete sample code from Swift Playground (macOS 26): import SwiftUI class MyArray : Hashable, Equatable, Identifiable, ObservableObject, Codable { let id = UUID() @Published var subject: String @Published var room : String private enum CodingKeys : String, CodingKey { case subject case room } init(subject : String, room : String) { self.subject = subject self.room = room } func encode(to encod

MapKit offers showsTraffic: Bool, which is great for displaying live traffic data on the map. However, MapPolyline sits above it, which makes it quite useless. Is this the expected behaviour?

Hi, Overview: I get the following error when trying to save / read from SwiftData It happens when I try to save color to SwiftData (code below) Error 'NSKeyedUnarchiveFromData' should not be used to for un-archiving and will be removed in a future release Questions How can I resolve the error? I am not directly using data, I am using just Float values, swift types. Why am I getting this error? Is there a way to add a breakpoint to stop at the exact type causing the error? (Symbolic breakpoint doesn't seem to help) Or is the below code ok and not responsible for the error? Code import SwiftUI nonisolated struct ColorRepresentation: Codable { let red: Float let green: Float let blue: Float let opacity: Float init(colorResolved: Color.Resolved) { red = colorResolved.red green = colorResolved.green blue = colorResolved.blue opacity = colorResolved.opacity } func color() throws -> Color { Color( red: Double(red), green: Double(green), blue: Double(blue), opacity: Double(opacity) ) } } extension ColorRe

[Submitted as FB22612121] A SwiftUI Button using .buttonStyle(.glass) with .buttonBorderShape(.capsule) changes its background abruptly when its size goes from 50×50 to 51×51 points in dark mode. This appears to be a threshold in opacity/material rather than a smooth size-based change. The sample shows identical buttons at 40, 50, 51, and 60 points, with a clear jump between 50 and 51. Measured RGB values shift from 19,19,19 to 30,30,30. The effect also varies with the background, which points to a material/opacity change rather than a fixed fill. ENVIRONMENT iOS 26.4.1 (23E254a) iOS 26.5 (23F5059e) REPRO STEPS Create a new iOS SwiftUI project. Replace ContentView with the sample code below. Run the app or open ContentView in SwiftUI Preview (dark mode). Observe the buttons at 40×40, 50×50, 51×51, and 60×60. Compare the 50pt and 51pt buttons. ACTUAL The background changes abruptly between 50pt and 51pt. The 51pt button uses a noticeably different opacity/material, producing a visibl