Why is there inconstancy of appearing the keyboard tool bar Item with tab view? Try to go to second tab and focus the field. Sometimes it does not appear (in my more complex project it does not appear >90% times). import SwiftUI struct MainTabView: View { var body: some View { TabView { FirstTabView() .tabItem { Label("Tab 1", systemImage: "house") } SecondTabView() .tabItem { Label("Tab 2", systemImage: "star") } } } } struct FirstTabView: View { @State private var text = "" var body: some View { NavigationStack { VStack { TextField("Enter something 1", text: $text) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } .toolbar { ToolbarItemGroup(placement: .keyboard) { Button("Done") { UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil) } } } } } } struct SecondTabView: View { @State private var text = "" var body: some View { NavigationStack { VStack { TextField("Enter something 2", text: $text) .textFieldStyle(RoundedBorderTextFieldStyle()) .padding() } .toolbar { ToolbarItemGroup(placement: .keyboard) { Button("Done") { UIApplication.shared.sendAction(#selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil) } } } } } } #Preview { MainTabView() }

I have implemented a sample video editing timeline using SwiftUI and am facing issues. So I am breaking up the problem in chunks and posting issue each as a separate question. In the code below, I have a simple timeline using an HStack comprising of a left spacer, right spacer(represented as simple black color) and a trimmer UI in the middle. The trimmer resizes as the left and right handles are dragged. The left and right spacers also adjust in width as the trimmer handles are dragged. Problem: I want to keep the background thumbnails (implemented currently as simple Rectangles filled in different colors) in the trimmer stationary as the trimmer resizes. Currently they move along as the trimmer resizes as seen in the gif below. How do I fix it? import SwiftUI struct SampleTimeline: View { let viewWidth:CGFloat = 340 //Width of HStack container for Timeline @State var frameWidth:CGFloat = 280 //Width of trimmer var minWidth: CGFloat { 2*chevronWidth + 10 } //min Width of trimmer @State private var leftViewWidth:CGFloat = 20 @State private var rightViewWidth:CGFloat = 20 var chevronWidth:CGFloat { return 24 } var body: some View { HStack(spacing:0) { Color.black .frame(width: leftViewWidth) .frame(height: 70) HStack(spacing: 0) { Image(systemName: "chevron.compact.left") .frame(width: chevronWidth, height: 70) .background(Color.blue) .gesture( DragGesture(minimumDistance: 0) .onChanged({ value in leftViewWidth = max(leftViewWidth + value.translation.width, 0) if leftViewWidth > viewWidth - minWidth - rightViewWidth { leftViewWidth = viewWidth - minWidth - rightViewWidth } frameWidth = max(viewWidth - leftViewWidth - rightViewWidth, minWidth) }) .onEnded { value in } ) Spacer() Image(systemName: "chevron.compact.right") .frame(width: chevronWidth, height: 70) .background(Color.blue) .gesture( DragGesture(minimumDistance: 0) .onChanged({ value in rightViewWidth = max(rightViewWidth - value.translation.width, 0) if rightViewWidth > viewWidth - minWidth - leftViewWidth { rightViewWidth = viewWidth - minWidth - leftViewWidth } frameWidth = max(viewWidth - leftViewWidth - rightViewWidth, minWidth) }) .onEnded { value in } ) } .foregroundColor(.black) .font(.title3.weight(.semibold)) .background { HStack(spacing:0) { Rectangle().fill(Color.red) .frame(width: 70, height: 60) Rectangle().fill(Color.cyan) .frame(width: 70, height: 60) Rectangle().fill(Color.orange) .frame(width: 70, height: 60) Rectangle().fill(Color.brown) .frame(width: 70, height: 60) Rectangle().fill(Color.purple) .frame(width: 70, height: 60) } } .frame(width: frameWidth) .clipped() Color.black .frame(width: rightViewWidth) .frame(height: 70) } .frame(width: viewWidth, alignment: .leading) } } #Preview { SampleTimeline() }

Hello! After upgrading to Xcode 16 & Swift 6 & iOS 18 I starting receiveing strange crashes. Happens randomly in different view and pointing to onGeometryChange action block. I added DispatchQueue.main.async { in hopes it will help but it didn't. HStack { ... } .onGeometryChange(for: CGSize.self, of: \.size) { value in DispatchQueue.main.async { self.width = value.width self.height = value.height } } As far as I understand, onGeometryChange is defined as nonisolated and Swift 6 enforce thread checking for the closures, SwiftUI views are always run on the main thread. Does it mean we can not use onGeometryChange safely in swiftui? BUG IN CLIENT OF LIBDISPATCH: Assertion failed: Block was expected to execute on queue [com.apple.main-thread (0x1eacdce40)] Crashed: com.apple.SwiftUI.AsyncRenderer 0 libdispatch.dylib 0x64d8 _dispatch_assert_queue_fail + 120 1 libdispatch.dylib 0x6460 _dispatch_assert_queue_fail + 194 2 libswift_Concurrency.dylib 0x62b58 <redacted> + 284 3 Grit 0x3a57cc specialized implicit closure #1 in closure #1 in PurchaseModalOld.body.getter + 4377696204 (<compiler-generated>:4377696204) 4 SwiftUI 0x5841e0 <redacted> + 60 5 SwiftUI 0x5837f8 <redacted> + 20 6 SwiftUI 0x586b5c <redacted> + 84 7 SwiftUICore 0x68846c <redacted> + 48 8 SwiftUICore 0x686dd4 <redacted> + 16 9 SwiftUICore 0x6ecc74 <redacted> + 160 10 SwiftUICore 0x686224 <redacted> + 872 11 SwiftUICore 0x685e24 $s14AttributeGraph12StatefulRuleP7SwiftUIE15withObservation2doqd__qd__yKXE_tKlF + 72 12 SwiftUI 0x95450 <redacted> + 1392 13 SwiftUI 0x7e438 <redacted> + 32 14 AttributeGraph 0x952c AG::Graph::UpdateStack::update() + 540 15 AttributeGraph 0x90f0 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, unsigned int) + 424 16 AttributeGraph 0x8cc4 AG::Subgraph::update(unsigned int) + 848 17 SwiftUICore 0x9eda58 <redacted> + 348 18 SwiftUICore 0x9edf70 <redacted> + 36 19 AttributeGraph 0x148c0 AGGraphWithMainThreadHandler + 60 20 SwiftUICore 0x9e7834 $s7SwiftUI9ViewGraphC18updateOutputsAsync2atAA11DisplayListV4list_AG7VersionV7versiontSgAA4TimeV_tF + 560 21 SwiftUICore 0x9e0fc0 $s7SwiftUI16ViewRendererHostPAAE11renderAsync8interval15targetTimestampAA4TimeVSgSd_AItF + 524 22 SwiftUI 0xecfdfc <redacted> + 220 23 SwiftUI 0x55c84 <redacted> + 312 24 SwiftUI 0x55b20 <redacted> + 60 25 QuartzCore 0xc7078 <redacted> + 48 26 QuartzCore 0xc52b4 <redacted> + 884 27 QuartzCore 0xc5cb4 <redacted> + 456 28 CoreFoundation 0x555dc <redacted> + 176 29 CoreFoundation 0x55518 <redacted> + 60 30 CoreFoundation 0x55438 <redacted> + 524 31 CoreFoundation 0x54284 <redacted> + 2248 32 CoreFoundation 0x535b8 CFRunLoopRunSpecific + 572 33 Foundation 0xb6f00 <redacted> + 212 34 Foundation 0xb6dd4 <redacted> + 64 35 SwiftUI 0x38bc80 <redacted> + 792 36 SwiftUI 0x1395d0 <redacted> + 72 37 Foundation 0xc8058 <redacted> + 724 38 libsystem_pthread.dylib 0x637c _pthread_start + 136 39 libsystem_pthread.dylib 0x1494 thread_start + 8

Hello, I've upgraded both of my Apple TVs to tvOS 18. Since then, my app developed with SwiftUI has become almost unusable due to severe lag, particularly when scrolling in a LazyVStack. On the A1625 (Apple TV HD), the lag can last up to 20 seconds, while on the A2843 (Apple TV 4K, 3rd generation, Wi-Fi + Ethernet), it’s about one second. I can consistently reproduce the issue with this minimal example: @main struct MyApp: App { var body: some Scene { WindowGroup { ScrollView { LazyVStack { ForEach(0..<1000) { nb in Button("Item \(nb)") {} } } } } } } Using Instruments, I found that the hang is related to this call: 389.00 ms 71,4 % 6.00 ms +[_UIFocusRegionEvaluator __regionsByEvaluatingOcclusionsForBaseRegions:occludingRegions:baseRegionsCanOccludeEachOther:inSnapshot:] Unfortunately, I can't attach the Instruments trace directly here, but you can download it from this link: https://drive.google.com/file/d/1sEIwXhr7_ajjRHZevCIW6jNOlPjaeU6L/view?usp=sharing Important notes: The same screen, when written in UIKit, runs smoothly on both devices. After performing a factory reset on the older device, the performance issue disappeared. However, as you can imagine, I’m already receiving complaints from users who are understandably unwilling to reset their devices. Does anyone know of a workaround until this is addressed by Apple?

It looks like iOS 18 app changed the way document-based SwiftUI apps function in a way that breaks our app. Previously, a ReferenceFileDocument would run its init(configuration:) function before any SwiftUI views would load. Now, it runs it after SwiftUI views load and their onAppear modifiers run. Because we use a reference-type data model, our views reference a different object than the one loaded from our document's content. Much of our app's functionality is broken, and file saving doesn't work (because the data model writing to disk isn't connected to the views) I filed a bug report, but this seems like a wild change that should affect more than just us. It wasn't happening earlier in the iOS betas. It feels like it only got added in the last beta, but I'm not sure. Has anyone else run into this, or have any guidance for how best to deal with this?

My problem: I tap in one of the TextFields defined below and try to type. After typing a single character, the cursor disappears from the TextField and I need to tap in the field again to enter the next character. I have the following code: @Observable final class Species { . . . public var list: [String] . . . } struct SpeciesCapture: View { @State private var species = Species() @State var trainingList: [String] = [] var body: some View { NavigationStack { VStack(alignment: .leading) { HStack { Text("some text") Spacer() Button("Add") { trainingList.append("") } } List { ForEach($trainingList, id: \.self) { $animal in TextField("Animal", text: $animal) .textCase(.lowercase) } } } .onAppear { trainingList = species.list . . . } . . . // etc. } } } It appears that I am continually losing focus. How do I fix this problem? Xcode 16.0 targeting iOS 18. The behavior appears in both Preview and the Simulator. (Haven't tried it on a physical device).

I have an app that plays sound files stored locally. I'm using a single SwiftUI view with a MPVolumeView so the user can control system volume from the player in my app. When I'm playing the sound file on the iPhone, my volume slider operates as expected. When I AirPlay to my AppleTV, the volume slider still works to control the volume, but when I hit play in my app, the volume snaps to a different value, but actual sound volume doesn't change. Control still works. Flipping to control center, I see a volume mismatch between system volume and the MPVolumeView. Here's the code that I use to put the slider in my app. struct VolumeSlider: UIViewRepresentable { func makeUIView(context: Context) -> MPVolumeView { let vv = MPVolumeView(frame: .zero) vv.showsVolumeSlider = true vv.setVolumeThumbImage(UIImage() ,for: UIControl.State.normal) return vv } func updateUIView(_ uiView: MPVolumeView, context: Context) { // No need to update the view in this case } } I'm using AVFoundation and AVAudioPlayer to playback the sound file. I'm using MediaPlayer to tell MPNowPlayingInfoCenter the track info and AlbumArt. Audio control via control center works perfectly. Does the same if I target iOS 16 or 17. Is this a bug with the MPVolumeView or the way I added it to the app?

Hey all, I am facing a new issue on iOS 18 with ScenePhase and .onChange modifier. Here's roughly the code: .onChange(of: scenePhase, initial: true) { old, new in if new == .active { doStuff() } } on iOS 17 this was working as expected and triggered when eg. ap was brough from background or user navigated back to view on ios18 though this code gets triggered constatnly in my case when I eg. navigate to another screen on top of the one with that .onChange. after navigation happens, the onChange is being triggered continuosly and does not stop which causes doStuff() to be called multiple times

I am developing an app that supports iOS 15 and later. Up until iOS 17, the behavior of onDrag and onDrop was as follows: The item is moved by holding it and dragging it to the onDrop area. When the item is dropped in the onDrop area, the logic is executed, and simultaneously, the item disappears immediately. However, in iOS 18 the item remains for about 0.5 to 1.0 seconds before disappearing, even though there is no logic in the onDrop. Is this the expected behavior, or is it a bug?"

Please... Failed to build module 'Charts'; this SDK is not supported by the compiler (the SDK is built with 'Apple Swift version 6.0 effective-5.10 (swiftlang-6.0.0.7.41 clang-1600.0.24.1)', while this compiler is 'Apple Swift version 6.0 effective-5.10 (swiftlang-6.0.0.9.11 clang-1600.0.26.2)'). Please select a toolchain which matches the SDK. ANY WORKAROUNDS?

In my project, I used two metal shaders in two ways. One is link to SwiftUI's modifier .colorEffect(ShaderLibrary.myShader()), which metal shader marked as [[stichable]]. Another one is a custom CIFilter, which kernel been written in external "C" closure. Because custom CIFilter must add build rules so Xcode can compile it, so I added -fcikernel to Metal Compiler and -cikernel to Metal Linker from Build Settings, just like Apple's document told me that. But the result is weird, if I add rules, custom CIFilter works, [[stichable]] shader doesn't work. if I delete rules, and comment out code of CIFilter(for avoiding warning), [[stichable]] shader works, but now I can't use my custom CIFilter. Actually, once these two shaders works well in my project, but when I updated Xcode from 15 to 16, it became weird, the 2 shaders can't exist at same time. Even though I go back to Xcode 15, I can't save them. I have no idea, please help, thank you. XCode 16 / iOS 18 on iPhone 14 Pro

Hi, I'm trying to personalize the Detect animal poses in Vision example (WWDC 23). Detect animal poses in Vision After some tests I saw that the landmarks and connection drawings work only if I do not ignore the safe area, if I ignore it (removing the toggle) or use the app on the iPad the drawings are no longer applied correctly. In the example GeometryReader is used to detect the size of the view: ... ZStack { GeometryReader { geo in AnimalSkeletonView(animalJoint: animalJoint, size: geo.size) } }.frame(maxWidth: .infinity) ... struct AnimalSkeletonView: View { // Get the animal joint locations. @StateObject var animalJoint = AnimalPoseDetector() var size: CGSize var body: some View { DisplayView(animalJoint: animalJoint) if animalJoint.animalBodyParts.isEmpty == false { // Draw the skeleton of the animal. // Iterate over all recognized points and connect the joints. ZStack { ZStack { // left head if let nose = animalJoint.animalBodyParts[.nose] { if let leftEye = animalJoint.animalBodyParts[.leftEye] { Line(points: [nose.location, leftEye.location], size: size) .stroke(lineWidth: 5.0) .fill(Color.orange) } } ... } } } } } // Create a transform that converts the pose's normalized point. struct Line: Shape { var points: [CGPoint] var size: CGSize func path(in rect: CGRect) -> Path { let pointTransform: CGAffineTransform = .identity .translatedBy(x: 0.0, y: -1.0) .concatenating(.identity.scaledBy(x: 1.0, y: -1.0)) .concatenating(.identity.scaledBy(x: size.width, y: size.height)) var path = Path() path.move(to: points[0]) for point in points { path.addLine(to: point) } return path.applying(pointTransform) } } Looking online I saw that it was recommended to change the property cameraView.previewLayer.videoGravity from: cameraView.previewLayer.videoGravity = .resizeAspectFill to: cameraView.previewLayer.videoGravity = .resizeAspect but it doesn't work for me. Could you help me understand where I'm wrong? Thanks!

I am trying to build a video editing timeline using SwiftUI which consists of a series of trimmers (sample code for trimmer below). I plan to embed multiple of these trimmers in an HStack to make an editing timeline (HStack in turn will be embedded in a ScrollView). What I want to achieve is that if I trim end of any of these trimmers by dragging it's left/right edge, the other trimmers on timeline should move left/right to fill the gap. I understand as the view shrinks/expands during trimming, there might be a need for spacers on the edges of HStack whose widths need to be adjusted while trimming is ongoing. Right now the code I have for the trimmer uses a fixed frameWidth of the view, so the view occupies full space even if the trimming ends move. It's not clear how to modify my code below to achieve what I want. This was pretty much possible to do in UIKit by the way. import SwiftUI struct SimpleTrimmer: View { @State var frameWidth:CGFloat = 300 let minWidth: CGFloat = 30 @State private var leftOffset: CGFloat = 0 @State private var rightOffset: CGFloat = 0 @GestureState private var leftDragOffset: CGFloat = 0 @GestureState private var rightDragOffset: CGFloat = 0 private var leftAdjustment: CGFloat { // NSLog("Left offset \(leftOffset + leftDragOffset)") var adjustment = max(0, leftOffset + leftDragOffset) if frameWidth - rightOffset - adjustment - 60 < minWidth { adjustment = frameWidth - rightOffset - minWidth - 60.0 } return adjustment } private var rightAdjustment: CGFloat { var adjustment = max(0, rightOffset - rightDragOffset) if frameWidth - adjustment - leftOffset - 60 < minWidth { adjustment = frameWidth - leftOffset - 60 - minWidth } return adjustment } var body: some View { HStack(spacing: 10) { Image(systemName: "chevron.compact.left") .frame(width: 30, height: 70) .background(Color.blue) .offset(x: leftAdjustment) .gesture( DragGesture(minimumDistance: 0) .updating($leftDragOffset) { value, state, trans in state = value.translation.width } .onEnded { value in var maxLeftOffset = max(0, leftOffset + value.translation.width) if frameWidth - rightAdjustment - maxLeftOffset - 60 < minWidth { maxLeftOffset = frameWidth - rightAdjustment - minWidth - 60 } leftOffset = maxLeftOffset } ) Spacer() Image(systemName: "chevron.compact.right") .frame(width: 30, height: 70) .background(Color.blue) .offset(x: -rightAdjustment) .gesture( DragGesture(minimumDistance: 0) .updating($rightDragOffset) { value, state, trans in state = value.translation.width } .onEnded { value in var minRightOffset = max(0, rightOffset - value.translation.width) if minRightOffset < leftAdjustment - 60 - minWidth { minRightOffset = leftAdjustment - 60 - minWidth } rightOffset = minRightOffset } ) } .foregroundColor(.black) .font(.title3.weight(.semibold)) .padding(.horizontal, 7) .padding(.vertical, 3) .background { RoundedRectangle(cornerRadius: 7) .fill(.yellow) .padding(.leading, leftAdjustment) .padding(.trailing, rightAdjustment) } .frame(width: frameWidth) } } #Preview { SimpleTrimmer() }

It seems that after adding a lock screen widget in iOS 18, changing the widget settings doesn't work properly. The first setting change is applied, but after that, adjusting the settings has no effect. This issue appears to be present in other apps like Gmail as well, which suggests it might be an iOS 18 bug. Is there a solution to this problem?

When I set a custom exposure duration, like 1/8, and then switch back to continuous auto exposure, the exposure duration in areas that were previously 1/17 changes to something like 1/5 or 1/10. As a result, the screen becomes laggy and overexposed. I'm not sure why this is happening.

A couple of weeks ago I got help here to play one song and the solution to my problem was that I wasn't adding the song (Track Type) to the queue correctly, so now I want to be able to add a playlist worth of songs to the queue. The problem is when I try to add an array of the Track type I get an error. The other part of this issue for me is how do I access an individual song off of the queue after I add it? I see I can do ApplicationMusicPlayer.shared.queue.currentItem but I think I'm missing/misunderstanding something here. Anyway's I'll post the code I have to show how I'm attempting to do this at this moment. In this scenario we're getting passed in a playlist from another view. import SwiftUI import MusicKit struct PlayBackView: View { @State var song: Track? @State private var songs: [Track] = [] @State var playlist: Playlist private let player = ApplicationMusicPlayer.shared VStack { // Album Cover HStack(spacing: 20) { if let artwork = player.queue.currentEntry?.artwork { ArtworkImage(artwork, height: 100) } else { Image(systemName: "music.note") .resizable() .frame(width: 100, height: 100) } VStack(alignment: .leading) { // Song Title Text(player.queue.currentEntry?.title ?? "Song Title Not Found") .font(.title) .fixedSize(horizontal: false, vertical: true) } } } .padding() .task { await loadTracks() // It's Here I thought I could do something like this player.queue = tracks // Since I can do this with one singular track player.queue = [song] do { try await player.queue.insert(songs, position: .afterCurrentEntry) } catch { print(error.localizedDescription) } } } @MainActor private func loadTracks() async { do { let detailedPlaylist = try await playlist.with([.tracks]) let tracks = detailedPlaylist.tracks ?? [] setTracks(tracks) } catch { print(error.localizedDescription) } } @MainActor private func setTracks(_ tracks: MusicItemCollection<Track>) { songs = Array(tracks) } }

I've updated my computer to Sequoia 15, Xcode 16 and now no matter what I do, I am unable to work with Swift UI previews. I get this error each time I try to run the preview: Failed to launch app in reasonable time I have done: Uninstall/Re-install Xcode Deleted derived data Deleted the simulator data Used DevCleaner to remove all data related to Xcode Searched all websites about this issue. ( Non shown a good solution ) Write this question on here. If anyone has found a solution, please let me know how you fixed it.

Okay I know, fill a bug... but here is a super simple app that will demostrate that the navigation bar chnages from Dark scheme to light scheme when you tap back after it goes to the second view. import SwiftUI struct ContentView: View { var body: some View { NavigationStack { NavigationLink { Text("Tap back and notice the navigation title changes to black text instead of white") .toolbarBackground(.visible, for: .navigationBar) .toolbarBackground(Color.orange, for: .navigationBar) .toolbarColorScheme(.dark, for: .navigationBar) } label: { VStack { Text("First page is the sweetest") } .padding() } .navigationTitle("First Page") .toolbarBackground(.visible, for: .navigationBar) .toolbarBackground(Color.orange, for: .navigationBar) .toolbarColorScheme(.dark, for: .navigationBar) } } } #Preview { ContentView() }

I'm working on a macOS and iOS app using SwiftUI. And received bug from very few user that they are being logged out, even tho they didn't. So i'm assuming issue is relevant to this forum post, and that the keychain data and user defaults aren't available very early on in an app's lifecycle (presumably from cold start). There is fix available for iOS but didn't find anything relevant to isProtectedDataAvailable for macOS. I'm accessing UserDefaults in my @main view's sub view. It seems that UserDefaults is accessed too early, before applicationDidFinishLaunching. And therefore, not getting user data on launch sometimes. This issue is very rare, i'm not able to reproduce this, but assuming this can be cause based on some form post, also because view's onAppear calls before applicationDidFinishLaunching.

Hi. I am making my widgets ready for iOS 18 accented Home Screen widgets. I am having issues setting the color of text to black. This is required as I have a white button with black text and black icon. I have tried manually, without using my Color, to set the text to .black or .white. It will always be white. When applying the accent, I can use the .widgetAccentedRenderingMode(.fullColor) to turn the icon black, but I cannot do this for the text. Button(intent: --intent--) { HStack(alignment: .center) { Text("Play") .font(.system(size: 12, weight: .bold)) .foregroundStyle(Color("buttonAccentColor")) // Problem here, this is forced to be white, I want it to be black Image("resume") .renderingMode(.template) .resizable() .widgetAccentedRenderingMode(.fullColor) // This works .aspectRatio(contentMode: .fit) .frame(width: 16, height: 16) .foregroundStyle(Color("buttonAccentColor")) } .padding(8) .padding(.horizontal, 8) } .buttonStyle(.plain) .background(Color("neutral100")) .clipShape(Capsule())