Provide views, controls, and layout structures for declaring your app's user interface using SwiftUI.

Posts under SwiftUI tag

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Broadcast Upload Extension
I am trying to use Broadcast upload extension but Broadcast picker starts countdown and stops (swiftUI). Steps i followed. added BroadcastUploadExtension as target same app group for for main app and extension added packages using SPM i seems the extension functions are not getting triggered, i check using UIScreen.main.isCaptured also which always comes as false. i tried Using Logs which never Appeared.
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560
Mar ’25
App Launches on Login but Window Doesn't Appear Automatically (macOS Sequoia 15.2, Xcode 16.2)
I am developing a macOS app using SwiftUI, and I am encountering an issue when launching the app at login. The app starts as expected, but the window does not appear automatically. Instead, it remains in the Dock, and the user must manually click the app icon to make the window appear. Additionally, I noticed that the timestamp obtained during the app's initialization (init) differs from the timestamp obtained in .onAppear. This suggests that .onAppear does not trigger until the user interacts with the app. However, I want .onAppear to execute automatically upon login. Steps to Reproduce Build the app and add it to System Settings > General > Login Items as an item that opens at login. Quit the app and restart the Mac. Log in to macOS. Observe that the app starts and appears in the Dock but does not create a window. Click the app icon in the Dock, and only then does the window appear. Expected Behavior The window should be created and appear automatically upon login without requiring user interaction. .onAppear should execute immediately when the app starts at login. Observed Behavior The app launches and is present in the Dock, but the window does not appear. .onAppear does not execute until the user manually clicks the app icon. A discrepancy exists between the timestamps obtained in init and .onAppear. Sample Code Here is a minimal example that reproduces the issue: LoginTestApp.swift import SwiftUI @main struct LoginTestApp: App { @State var date2: Date init(){ date2 = Date() } var body: some Scene { WindowGroup { MainView(date2: $date2) } } } MainView.swift import SwiftUI struct MainView: View { @State var date1: Date? @Binding var date2: Date var body: some View { Text("This is MainView") Text("MainView created: \(date1?.description ?? "")") .onAppear { date1 = Date() } Text("App initialized: \(date2.description)") } } Test Environment Book Pro 13-inch, M1, 2020 macOS Sequoia 15.2 Xcode 16.2 Questions Is this expected behavior in macOS Sequoia 15.2? How can I ensure that .onAppear executes automatically upon login? Is there an alternative approach to ensure the window is displayed without user interaction?
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286
Mar ’25
Optimal Way of Getting Screen Resolution Using SwiftUI
Hi all, I am looking for a futureproof way of getting the Screen Resolution of my display device using SwiftUI in MacOS. I understand that it can't really be done to the fullest extent, meaning that the closest API we have is the GeometeryProxy and that would only result in the resolution of the parent view, which in the MacOS case would not give us the display's screen resolution. The only viable option I am left with is NSScreen.frame. However, my issue here is that it seems like Apple is moving towards SwiftUI aggressively, and in order to futureproof my application I need to not rely on AppKit methods as much. Hence, my question: Is there a way to get the Screen Resolution of a Display using SwiftUI that Apple itself recommends? If not, then can I rely safely on NSScreen's frame API?
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382
Mar ’25
App crashes after multiple transitions to screen containing AR Kit using SwiftUI NavigationStack
Hello. I am currently building an app using AR Kit. As for the UI, I am using SwiftUI and NavigationStack + NavigationLink for navigation and screen transitions! Here I need to go back and forth between the AR screen and other screens. If the number of screen transitions is small, this is not a problem. However, if the number of screen transitions increases to 10 or 20, it crashes somewhere. We are struggling with this problem. (The nature of the application requires multiple screen transitions.) The crash log showed the following. error: read memory from 0x1e387f2d4 failed AR_Crash_Sample-2025-03-07-115914.txt Incident Identifier: B23D806E-D578-4A95-8828-2A1E8D6BB7F8 Beta Identifier: 924A85AB-441C-41A7-9BC2-063940BDAF32 Hardware Model: iPhone16,1 Process: AR_Crash_Sample [2375] Path: /private/var/containers/Bundle/Application/FAC3D662-DB10-434E-A006-79B9515D8B7A/AR_Crash_Sample.app/AR_Crash_Sample Identifier: ar.crash.sample.AR.Crash.Sample Version: 1.0 (1) AppStoreTools: 16C7015 AppVariant: 1:iPhone16,1:18 Beta: YES Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] Coalition: ar.crash.sample.AR.Crash.Sample [1464] Date/Time: 2025-03-07 11:59:14.3691 +0900 Launch Time: 2025-03-07 11:57:47.3955 +0900 OS Version: iPhone OS 18.3.1 (22D72) Release Type: User Baseband Version: 2.40.05 Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: SIGNAL 6 Abort trap: 6 Terminating Process: AR_Crash_Sample [2375] Triggered by Thread: 7 Application Specific Information: abort() called Thread 7 name: Dispatch queue: com.apple.arkit.depthtechnique Thread 7 Crashed: 0 libsystem_kernel.dylib 0x1e387f2d4 __pthread_kill + 8 1 libsystem_pthread.dylib 0x21cedd59c pthread_kill + 268 2 libsystem_c.dylib 0x199f98b08 abort + 128 3 libc++abi.dylib 0x21ce035b8 abort_message + 132 4 libc++abi.dylib 0x21cdf1b90 demangling_terminate_handler() + 320 5 libobjc.A.dylib 0x18f6c72d4 _objc_terminate() + 172 6 libc++abi.dylib 0x21ce0287c std::__terminate(void (*)()) + 16 7 libc++abi.dylib 0x21ce02820 std::terminate() + 108 8 libdispatch.dylib 0x199edefbc _dispatch_client_callout + 40 9 libdispatch.dylib 0x199ee65cc _dispatch_lane_serial_drain + 768 10 libdispatch.dylib 0x199ee7158 _dispatch_lane_invoke + 432 11 libdispatch.dylib 0x199ee85c0 _dispatch_workloop_invoke + 1744 12 libdispatch.dylib 0x199ef238c _dispatch_root_queue_drain_deferred_wlh + 288 13 libdispatch.dylib 0x199ef1bd8 _dispatch_workloop_worker_thread + 540 14 libsystem_pthread.dylib 0x21ced8680 _pthread_wqthread + 288 15 libsystem_pthread.dylib 0x21ced6474 start_wqthread + 8 Perhaps I am using too much memory! How can I address this phenomenon? For the AR functionality, we are using UIViewRepresentable, which is written in UIKit and can be called from SwiftUI import ARKit import AsyncAlgorithms import AVFoundation import SCNLine import SwiftUI internal struct MeasureARViewContainer: UIViewRepresentable { @Binding var tapCount: Int @Binding var distance: Double? @Binding var currentIndex: Int var focusSquare: FocusSquare = FocusSquare() let coachingOverlay: ARCoachingOverlayView = ARCoachingOverlayView() func makeUIView(context: Context) -> ARSCNView { let arView: ARSCNView = ARSCNView() arView.delegate = context.coordinator let configuration: ARWorldTrackingConfiguration = ARWorldTrackingConfiguration() configuration.planeDetection = [.horizontal, .vertical] if ARWorldTrackingConfiguration.supportsFrameSemantics(.sceneDepth) { configuration.frameSemantics = [.sceneDepth, .smoothedSceneDepth] } arView.session.run(configuration, options: [.resetTracking, .removeExistingAnchors]) context.coordinator.sceneView = arView context.coordinator.scanTarget() coachingOverlay.session = arView.session coachingOverlay.delegate = context.coordinator coachingOverlay.goal = .horizontalPlane coachingOverlay.activatesAutomatically = true coachingOverlay.autoresizingMask = [.flexibleWidth, .flexibleHeight] coachingOverlay.translatesAutoresizingMaskIntoConstraints = false arView.addSubview(coachingOverlay) return arView } func updateUIView(_ _: ARSCNView, context: Context) { context.coordinator.mode = MeasurementMode(rawValue: currentIndex) ?? .width if tapCount == 0 { context.coordinator.resetMeasurement() return } if distance != nil { return } DispatchQueue.main.async { if context.coordinator.distance == nil { context.coordinator.handleTap() } } } static func dismantleUIView(_ uiView: ARSCNView, coordinator: Coordinator) { uiView.session.pause() coordinator.stopScanTarget() coordinator.stopSpeech() DispatchQueue.main.async { uiView.removeFromSuperview() } } func makeCoordinator() -> Coordinator { Coordinator(self) } class Coordinator: NSObject, ARSCNViewDelegate, ARSessionDelegate, ARCoachingOverlayViewDelegate { var parent: MeasureARViewContainer var sceneView: ARSCNView? var startPosition: SCNVector3? var pointedCount: Int = 0 var distance: Float? var mode: MeasurementMode = .width let synthesizer: AVSpeechSynthesizer = AVSpeechSynthesizer() var scanTargetTask: Task<Void, Never>? var currentResult: ARRaycastResult? init(_ parent: MeasureARViewContainer) { self.parent = parent } // ... etc } }
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294
Mar ’25
Missing tab bar after switching tabs when tab bar is hidden in initial tab
Hi, I'm experiencing the behaviour outlined below. When I navigate programmatically on iPadOS or macOS from a tab that hides the tab bar to another tab, the tab bar remains hidden. The real app has it's entry point in UIKit (i.e. it uses an UITabBarController instead of a SwiftUI TabView) but since the problem is reproducible with a SwiftUI only app, I used one for the sake of simplicity. import SwiftUI @main struct HiddenTabBarTestApp: App { @State private var selectedIndex = 0 var body: some Scene { WindowGroup { TabView(selection: $selectedIndex) { Text("First Tab") .tabItem { Label("1", systemImage: "1.circle") } .tag(0) NavigationStack { Button("Go to first tab") { selectedIndex = 0 } .searchable(text: .constant("")) } .tabItem { Label("2", systemImage: "2.circle") } .tag(1) } } } } Reproduction: Create a new SwiftUI App with the iOS App template and use the code from above Run the app on iPadOS or macOS Navigate to the second tab Click into the search bar Click the "Go to first tab" button The tab bar is no longer visible Is this a bug in the Framework or is it the expected behaviour? If it's the expected behaviour, do you have a good solution/workaround that doesn't require me to end the search programmatically (e.g. by using @Environment(\.dismissSearch)) before navigating to another tab? The goal would be to show the tab bar in the first tab while keeping the search open in the second tab.
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252
Mar ’25
SwiftUi Picker in WatchOS throws Scrollview Error when using Digital Crown
The following WatchOs App example is very short, but already not functioning as it is expected, when using Digital Crown (full code): import SwiftUI struct ContentView: View { let array = ["One","Two","Three","Four"] @State var selection = "One" var body: some View { Picker("Array", selection: $selection) { ForEach(array, id: \.self) { Text($0) } } } } The following 2 errors are thrown, when using Digital Crown for scrolling: ScrollView contentOffset binding has been read; this will cause grossly inefficient view performance as the ScrollView's content will be updated whenever its contentOffset changes. Read the contentOffset binding in a view that is not parented between the creator of the binding and the ScrollView to avoid this. Error: Error Domain=NSOSStatusErrorDomain Code=-536870187 "(null)" Any help appreciated. Thanks a lot.
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1.1k
Mar ’25
How to properly pass a Metal layer from SwiftUI MTKView to C++ for use with metal-cpp?
Hello! I'm currently porting a videogame console emulator to iOS and I'm trying to make the renderer (tested on MacOS) work on iOS as well. The emulator core is written in C++ and uses metal-cpp for rendering, whereas the iOS frontend is written in Swift with SwiftUI. I have an Objective-C++ bridging header for bridging the Swift and C++ sides. On the Swift side, I create an MTKView. Inside the MTKView delegate, I run the emulator for 1 video frame and pass it the view's backing layer for it to render the final output image with. The emulator runs and returns, but when it returns I get a crash in Swift land (callstack attached below), inside objc_release, which indicates I'm doing something wrong with memory management. My bridging interface (ios_driver.h): #pragma once #include <Foundation/Foundation.h> #include <QuartzCore/QuartzCore.h> void iosCreateEmulator(); void iosRunFrame(CAMetalLayer* layer); Bridge implementation (ios_driver.mm): #import <Foundation/Foundation.h> extern "C" { #include "ios_driver.h" } <...> #define IOS_EXPORT extern "C" __attribute__((visibility("default"))) std::unique_ptr<Emulator> emulator = nullptr; IOS_EXPORT void iosCreateEmulator() { ... } // Runs 1 video frame of the emulator and IOS_EXPORT void iosRunFrame(CAMetalLayer* layer) { void* layerBridged = (__bridge void*)layer; // Pass the CAMetalLayer to the emulator emulator->getRenderer()->setMTKLayer(layerBridged); // Runs the emulator for 1 frame and renders the output image using our layer emulator->runFrame(); } My MTKView delegate: class Renderer: NSObject, MTKViewDelegate { var parent: ContentView var device: MTLDevice! init(_ parent: ContentView) { self.parent = parent if let device = MTLCreateSystemDefaultDevice() { self.device = device } super.init() } func mtkView(_ view: MTKView, drawableSizeWillChange size: CGSize) {} func draw(in view: MTKView) { var metalLayer = view.layer as! CAMetalLayer // Run the emulator for 1 frame & display the output image iosRunFrame(metalLayer) } } Finally, the emulator's render function that interacts with the layer: void RendererMTL::setMTKLayer(void* layer) { metalLayer = (CA::MetalLayer*)layer; } void RendererMTL::display() { CA::MetalDrawable* drawable = metalLayer->nextDrawable(); if (!drawable) { return; } MTL::Texture* texture = drawable->texture(); <rest of rendering follows here using the drawable & its texture> } This is the Swift callstack at the time of the crash: To my understanding, I shouldn't be violating ARC rules as my bridging header uses CAMetalLayer* instead of void* and Swift will automatically account for ARC when passing CoreFoundation objects to Objective-C. However I don't have any other idea as to what might be causing this. I've been trying to debug this code for a couple of days without much success. If you need more info, the emulator code is also on Github Metal renderer: https://github.com/wheremyfoodat/Panda3DS/blob/ios/src/core/renderer_mtl/renderer_mtl.cpp#L58-L68 Bridge implementation: https://github.com/wheremyfoodat/Panda3DS/blob/ios/src/ios_driver.mm Bridging header: https://github.com/wheremyfoodat/Panda3DS/blob/ios/include/ios_driver.h Any help is more than appreciated. Thank you for your time in advance.
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447
Mar ’25
Memory leak in WebKit caused by KVO and @StateObject
Hi! My SwiftUI app is a rather complex browser app. Starting with iOS 18, the app crashes due to repeted reloads of the WkWebView. I’ve tracked the issue as far as I can, but I still haven’t found the root cause. My app is structured like this: MainView holds a cuple of subviews. It also holds a @StateObject called viewModel that holds a lot of @Published vars. The viewModel is passed as a enivormentObject. Example from ViewModel: @MainActor class ViewModel: NSObject, ObservableObject { @Published public var isLoading: Bool = false @Published public var loadProgress: Double? = 0 public func setIsLoading(_ value: Bool) async { self.isLoading = value } public func setLoadProgress(_ value: Double?) async { self.loadProgress = value } } WebView is a subview of MainView, which holds a navigation bar, and a UIViewRepresentable, which is a WkWebView. The WkWebView pushes some states to the ViewModel as the underlying values of the WkWebView changes, i.e. estimaedProgress, and isLoading. This is done via KVO and works like this: estimatedProgressObservation = self.parent.webView.observe(\.estimatedProgress) { webView, progress in Task { await parent.viewModel.setLoadProgress(webView.estimatedProgress) } } isLoadingObservation = self.parent.webView.observe(\.isLoading) { webView, value in Task { await parent.viewModel.setIsLoading(webView.isLoading) } } By using a timer in WkWebViews Coordinator, i trigger a load after a configurable amount of time :
 func loadUrl(url: URL) { DispatchQueue.main.async { console.info("Load URL: ...", sensitive: "Load URL: \(url.absoluteString)") let policy: NSURLRequest.CachePolicy if self.parent.settings.noCache { policy = .reloadIgnoringLocalAndRemoteCacheData } else { policy = .useProtocolCachePolicy } let request = URLRequest(url: url, cachePolicy: policy) self.parent.webView.load(request) } } Running the app with the automatic reload enabled freezes the app after a couple of hours. It also seems to freeze Safari on the device. The device needs to be rebooted. If I inspect the device's running processes, hundreds of ”com.apple.webkit. web content " processes are running. Removing await parent.viewModel.setLoadProgress(webView.estimatedProgress) and await parent.viewModel.setIsLoading(webView.isLoading) fixes the issue, but it is necessary for other app functions. Therefore, is suspect that the viewModel somehow causes the bug. The issue arises after a couple of loads 5-10. The debugger shows a message when the processes start to pile up. I suspect its related. Failed to terminate process: Error Domain=com.apple.extensionKit.errorDomain Code=18 "(null)" UserInfo={NSUnderlyingError=0x12d0e7f60 {Error Domain=RBSServiceErrorDomain Code=1 "Client not entitled" UserInfo={RBSEntitlement=com.apple.runningboard.terminateprocess, NSLocalizedFailureReason=Client not entitled, RBSPermanent=true}}} How can I find out what causes the suspected memory leak? Instruments gives me nothing of value. The memory leak wasn't present in iOS 17. Is this a bug in iOS 18, or was something intentionally changed?
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409
Mar ’25
Putting buttons over SwiftUI map view
Has anyone gotten custom buttons to work on top of tvOS Map()? I've tried many variations of FocusState focusSection .defaultFocus() and as soon as the map appears at startup the buttons never get focus again. They are on a ZStack over the map. I could post code but truthfully nothing works for me. I'm wondering if anyone has successfully put focusable buttons on top of the map view.
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212
Mar ’25
Why is the pitch slider visible in SwiftUI tvOS map view?
Why is the pitch slider always visible in the SwiftUI tvOS map view? It doesn't even appear to be supported there, let alone the fact that I specify mapControlVisibility(.hidden). Am I missing something or is Apple? See attached screenshot. This really messes up my UI. Here is my code: import SwiftUI import MapKit struct ContentView: View { @State var position = MapCameraPosition.region(MKCoordinateRegion( center: CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194), span: MKCoordinateSpan(latitudeDelta: 0.05, longitudeDelta: 0.05))) var body: some View { Map(position: $position) .mapControlVisibility(.hidden) .mapStyle(.standard(pointsOfInterest: .including(.airport))) } }
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257
Mar ’25
Migrating a Paid App to In-App Subscriptions
Hello, I’m trying to change the business model of my app to in-app subscriptions. My goal is to ensure that previous users who paid for the app have access to all premium content seamlessly, without even noticing any changes. I’ve tried using RevenueCat for this, but I’m not entirely sure it’s working as expected. I would like to use RevenueCat to manage subscriptions, so I’m attempting a hybrid model. On the first launch of the updated app, the plan is to validate the app receipts, extract the originalAppVersion, and store it in a variable. If the original version is lower than the latest paid version, the isPremium variable is set to true, and this status propagates throughout the app. For users with versions equal to or higher than the latest paid version, RevenueCat will handle the subscription status—checking if a subscription is active and determining whether to display the paywall for premium features. In a sandbox environment, it seems to work fine, but I’ve often encountered situations where the receipt doesn’t exist. I haven’t found a way to test this behavior properly in production. For example, I uploaded the app to TestFlight, but it doesn’t validate the actual transaction for a previously purchased version of the app. Correct me if I’m wrong, but it seems TestFlight doesn’t confirm whether I installed or purchased a paid version of the app. I need to be 100% sure that users who previously paid for the app won’t face any issues with this migration. Is there any method to verify this behavior in a production-like scenario that I might not be aware of? I’m sharing the code here to see if you can confirm that it will work as intended or suggest any necessary adjustments. func fetchAppReceipt(completion: @escaping (Bool) -> Void) { // Check if the receipt URL exists guard let receiptURL = Bundle.main.appStoreReceiptURL else { print("Receipt URL not found.") requestReceiptRefresh(completion: completion) return } // Check if the receipt file exists at the given path if !FileManager.default.fileExists(atPath: receiptURL.path) { print("The receipt does not exist at the specified location. Attempting to fetch a new receipt...") requestReceiptRefresh(completion: completion) return } do { // Read the receipt data from the file let receiptData = try Data(contentsOf: receiptURL) let receiptString = receiptData.base64EncodedString() print("Receipt found and encoded in base64: \(receiptString.prefix(50))...") completion(true) } catch { // Handle errors while reading the receipt print("Error reading the receipt: \(error.localizedDescription). Attempting to fetch a new receipt...") requestReceiptRefresh(completion: completion) } } func validateAppReceipt(completion: @escaping (Bool) -> Void) { print("Starting receipt validation...") guard let receiptURL = Bundle.main.appStoreReceiptURL else { print("Receipt not found on the device.") requestReceiptRefresh(completion: completion) completion(false) return } print("Receipt found at URL: \(receiptURL.absoluteString)") do { let receiptData = try Data(contentsOf: receiptURL, options: .alwaysMapped) print(receiptData) let receiptString = receiptData.base64EncodedString(options: []) print("Receipt encoded in base64: \(receiptString.prefix(50))...") let request = [ "receipt-data": receiptString, "password": "c8bc9070bf174a8a8df108ef6b8d2ae3" // Shared Secret ] print("Request prepared for Apple's validation server.") guard let url = URL(string: "https://buy.itunes.apple.com/verifyReceipt") else { print("Error: Invalid URL for Apple's validation server.") completion(false) return } print("Validation URL: \(url.absoluteString)") var urlRequest = URLRequest(url: url) urlRequest.httpMethod = "POST" urlRequest.httpBody = try? JSONSerialization.data(withJSONObject: request) URLSession.shared.dataTask(with: urlRequest) { data, response, error in if let error = error { print("Error sending the request: \(error.localizedDescription)") completion(false) return } guard let data = data else { print("No response received from Apple's server.") completion(false) return } print("Response received from Apple's server.") do { if let json = try JSONSerialization.jsonObject(with: data) as? [String: Any] { print("Response JSON: \(json)") // Verify original_application_version if let receipt = json["receipt"] as? [String: Any], let appVersion = receipt["original_application_version"] as? String { print("Original application version found: \(appVersion)") // Save the version in @AppStorage savedOriginalVersion = appVersion print("Original version saved in AppStorage: \(appVersion)") if let appVersionNumber = Double(appVersion), appVersionNumber < 1.62 { print("Original version is less than 1.62. User considered premium.") isFirstLaunch = true completion(true) } else { print("Original version is not less than 1.62. User is not premium.") completion(false) } } else { print("Could not find the original application version in the receipt.") completion(false) } } else { print("Error parsing the response JSON.") completion(false) } } catch { print("Error processing the JSON response: \(error.localizedDescription)") completion(false) } }.resume() } catch { print("Error reading the receipt: \(error.localizedDescription)") requestReceiptRefresh(completion: completion) completion(false) } } Some of these functions might seem redundant, but they are intended to double-check and ensure that the user is not a previous user. Is there any way to be certain that this will work when the app is downloaded from the App Store? Thanks in advance!
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409
Mar ’25
SwiftUI PhotosPicker accessibility issue
iOS 18.3.1, iPhone 16 Pro. I pick photos using connected physical keyboard from the user's photo library using: .photosPicker(isPresented: $viewModel.isImagePickerPresented, selection: $viewModel.selectedImageItem, matching: .images) When picker appears, accessibility focus is moved to "dynamic Island" instead of cancel button. There is no possibility to navigate by keyboard in photos picker view without tapping on this view and move focus to this view manually . I noticed the same behavior in Notes app.
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502
Mar ’25
How to check for cancellation of background task
When using the old withTaskCancellationHandler(operation:onCancel:isolation:) to run background tasks, you were notified that the background task gets cancelled via the handler being called. SwiftUI provides the backgroundTask(_:action:) modifier which looks quite handy. However how can I check if the background task will be cancelled to avoid being terminated by the system? I have tried to check that via Task.isCancelled but this always returns false no matter what. Is this not possible when using the modifier in which case I should file a bug report? Thanks for your help
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238
Mar ’25
SwiftUI List on maCOS: highlighting content in the selected row?
Hello all, In a SwiftUI List, when a row is selected, a blue selection is drawn in the selection, and foreground Text with the default primary color is automatically made white. For other views with custom colors, I'd like to be able to make sure they become tinted white to match the system apps. For example, see the blue dot on the selected row: Example code: List(selection: $selection) {     ForEach(0..<4) { index in         HStack {             Image(systemName: "circle.fill")                 .foregroundColor(.blue)             Text("Test")         }         .tag(index)     } } With NSTableCellView, there is the backgroundStyle property. I've searched all of the available environment variables, and couldn't find anything appropriate. I have also tried manually including an isSelected binding on a view for each row, but the selection binding is not updated by List until mouse-up, while the highlight is updated on mouse-down and drag, so this results in a flickery appearance and is not right either. Any tips on how to achieve the correct result here? Thanks! 🙏
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5k
Mar ’25
SwiftUI: TextField not getting focus changes inside Button
I have a SwiftUI List (on macOS) where I want to display a few TextFields in each row, and observe how the focus changes as an individual text field is selected or unselected. This seems to work fine if I just have the List display a pure TextField in each row, but if I embed the TextField inside a Button view, the focus change notifications stop working. I want the 'button' functionality so that the user can tap anywhere on the row and have the text field activated, instead of tapping exactly on the text field boundary. Here is some code to demonstrate the problem. In the List if you have RowView uncommented out (1), then the focus change notifications work. If you comment that out and uncomment the RowViewWithButton (2), then the button functionality works, but I can't get focus change notifications anymore. Here is the code to reproduce the issue. Interestingly, when I test this on iOS, it works fine in both cases. But I need the solution for macOS. import SwiftUI // test on macOS target struct ContentView: View { @State private var textFields = Array(repeating: "", count: 4) @FocusState private var focusedField: Int? var body: some View { List(0..<4, id: \.self) { index in // 1. works with focus notification changes RowView(index: index, text: $textFields[index], focusedField: $focusedField) // 2. button works, but no focus notifications on text field //RowViewWithButton(index: index, text: $textFields[index], focusedField: $focusedField) } } } struct RowView: View { let index: Int @Binding var text: String @FocusState.Binding var focusedField: Int? var body: some View { HStack { Text("Row \(index + 1):") TextField("", text: $text) .multilineTextAlignment(.leading) .focused($focusedField, equals: index) } .onChange(of: focusedField) { newFocus in if newFocus == index { print("TextField \(index) is in focus") } else { print("TextField \(index) lost focus") } } .padding(.vertical, 4) } } struct RowViewWithButton: View { let index: Int @Binding var text: String @FocusState.Binding var focusedField: Int? var body: some View { Button (action: { print("RowView - button selected at index \(index)") focusedField = index }) { HStack { Text("Row \(index + 1):") TextField("", text: $text) .multilineTextAlignment(.leading) .focused($focusedField, equals: index) } .onChange(of: focusedField) { newFocus in if newFocus == index { print("TextField \(index) is in focus") } else { print("TextField \(index) lost focus") } } .foregroundColor(.primary) } .buttonStyle(BorderlessButtonStyle()) .padding(.vertical, 4) } } #Preview { ContentView() .frame(width: 320, height: 250) }
2
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282
Mar ’25
SwiftUI: Rotate symbolEffect not working
Hello, I have the following code: struct SettingsButton: View { var action: () -> Void @State private var rotate: Bool = false var body: some View { Button(action: { rotate.toggle() action() }, label: { Image(systemName: "gearshape") }) .symbolEffect(.rotate, value: rotate) } } For some reason, my button is not rotating. Other effects such as pulse and bounce work as expected. I applied the .clockwise direction thinking it needed a direction set, but that didn't work either. I also tried using the symbolEffect with isActive, and that didn't work. Lastly, I thought there may be an issue with Xcode so I closed that and reopened, but still not working. Any ideas?
2
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653
Mar ’25
Infinite loop getting "_dismiss changed"
I'm working on a NavigationStack based app. Somewhere I'm using: @Environment(\.dismiss) private var dismiss and when trying to navigate to that view it gets stuck. I used Self._printChanges() and discovered the environment variable dismiss is changing repeatedly. Obviously I am not changing that variable explicitly. I wasn't able to reproduce this in a small project so far, but does anybody have any idea what kind of thing I could be doing that might be causing this issue? iOS 17.0.3
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6
2.2k
Mar ’25
Xcode AI Coding Assistance Option(s)
Not finding a lot on the Swift Assist technology announced at WWDC 2024. Does anyone know the latest status? Also, currently I use OpenAI's macOS app and its 'Work With...' functionality to assist with Xcode development, and this is okay, certainly saves copying code back and forth, but it seems like AI should be able to do a lot more to help with Xcode app development. I guess I'm looking at what people are doing with AI in Visual Studio, Cline, Cursor and other IDEs and tools like those and feel a bit left out working in Xcode. Please let me know if there are AI tools or techniques out there you use to help with your Xcode projects. Thanks in advance!
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Mar ’25