Does anyone have a problem with buttons not clickable in the lists of elements? If I have a list of 30 elements, some of them are clickable and some not. The button is a basic button that prints something in the console. After refresh, click ability is changed but still some clickable and some not. It appears always when compiling with Swift 6. My colleague has the "old" Xcode 15.4 with Swift 5 and when he installs exactly the same code -> buttons and lists work just fine. I noticed some similar issues with onTapGesture on StackOverflow but my problem is a button. However, I have the same problem with onTapGesture (where I use it) in some of my View components and changing it with highPriorityGesture will not solve the problem since I can't click on the child elements of those Views anymore... I'm using Xcode 16.2 and iOS 18.2. Does anyone have an idea how to solve this?

Hi everyone! I'm thrilled to share that I'm conducting a field research as part of my final university project, focused on iOS architecture. The goal is to dive deeper into the best practices, challenges, and trends in the iOS development world. To make this research truly impactful, I need your help! If you're an iOS developer, I’d love it if you could take a few minutes to answer a short survey. Your insights and experiences will be invaluable for my research, and I greatly appreciate your support! Here is the link: https://docs.google.com/forms/d/e/1FAIpQLSdf9cacfA7my1hnlazyl7uJraa2oTsQ7dJBWvFtZ_4vbYenRA/viewform?usp=send_form Thank you so much in advance for helping me out—feel free to share this post with others who might also be interested. Let’s build something amazing together! 💡✨

Hi everyone, I’m working on an iOS app using both UITableViewDiffableDataSource and SwiftUI, and I’m facing two separate but puzzling issues: UITableViewDiffableDataSource Not Reusing Cells on first applying after initial Snapshot. After applying first time it is working as expected from second time. SwiftUI View’s inside UITableViewCell onDisappear Not Triggering the on first changes of snapshot after initial snapshot. With normal UITableView it is working fine. Issue causing - it is causing player & cells to retain memory extensively Sample gist code for reproducing with diffable (DiffableTableViewExampleViewController) and working fine without diffable (RegularTableViewExampleViewController) https://gist.github.com/SURYAKANTSHARMA/d83fa9e7e0de309e27485100ba5aed17 Any insights or suggestions for these issues would be greatly appreciated! Thanks in advance!

Create an Empty visionOS App like this. starts in windowed mode, when I enter immersive mode and then exit back to windowed mode, I notice that the window appears dimmer. I start a simple project with settings as image shown below, and took screenShots of my window before and after entering immersive space then quit, compare them, the color value did become dimmer. The issue is reliably repeatable in a given room. If this issue is experienced, adjusting the display brightness to the maximum value and then back to the initial setting will restore the colors to the correct state. Force to exit the app then reopen it can do the same restoration.https://drive.google.com/file/d/1m-a4ghNlSkHhAQuvOCF_IAfcdYeJA14j/view?usp=sharing

As a starter for iOS programming, I want to get the touch’ x-y position on a SwiftUI view , what is the fastest way/api or the highest refresh rate to get the position . UItouch in UIkit ?or other api?

Hello! I'm trying to set a UiRefreshControl.tintColor: .onAppear { UIRefreshControl.appearance().tintColor = UIColor.systemBlue } But instead of I get The color in the second picture is a high contrast version of the first one. I can't understand why it works this way. I also tried the following. UIRefreshControl.appearance().tintColor = UIColor(red: 0, green: 0.478, blue: 1, alpha: 1) // doesn't work UIRefreshControl.appearance().tintColor = UIColor(named: "RefreshControlColor") // doesn't work, here set "High contrast" on and indicated Universal.systemBlueColor Perhaps I missed something?

I recently detected a special crash on 18.0, 18.1, 18.1.1, 18.2,18.3 which cannot be repeated, and the page logs are related to the keyboard, is there any idea to deal with this problem? Exception Category: nsexception Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x00000000 at 0x0000000000000000 Crashed Thread: 0 CrashDoctor Diagnosis: Application threw exception NSInternalInconsistencyException: Multi layer delegate table missing. Thread 0 Crashed: 0 CoreFoundation 0x00000001869d87cc __exceptionPreprocess + [ : 164] 1 libobjc.A.dylib 0x0000000183cab2e4 objc_exception_throw + [ : 88] 2 Foundation 0x0000000185da88d8 _userInfoForFileAndLine 3 UIKitCore 0x0000000189e78074 -[UIView _multiLayerDelegatesTableCreateIfNecessary:] + [ : 208] 4 UIKitCore 0x0000000189e780c4 -[UIView _registerMultiLayerDelegate:] + [ : 36] 5 UIKitCore 0x00000001894874c0 -[_UIPortalView setSourceView:] + [ : 132] 6 UIKitCore 0x000000018a1eb6bc -[_UIPortalView initWithSourceView:] + [ : 68] 7 UIKitCore 0x000000018a213ea4 -[_UITextMagnifiedLoupeView initWithSourceView:] + [ : 444] 8 UIKitCore 0x000000018a6c461c +[UITextLoupeSession _makeLoupeViewForSourceView:selectionWidget:orientation:] + [ : 84] 9 UIKitCore 0x000000018a6c47bc +[UITextLoupeSession _beginLoupeSessionAtPoint:fromSelectionWidgetView:inView:orientation:] + [ : 304] 10 UIKitCore 0x0000000189d50ce0 -[UITextRefinementTouchBehavior textLoupeInteraction:gestureChangedWithState:location:translation:velocity:modifierFlags:shouldCancel:] + [ : 1756] 11 UIKit 0x0000000240e309e0 -[UITextRefinementTouchBehaviorAccessibility textLoupeInteraction:gestureChangedWithState:location:translation:velocity:modifierFlags:shouldCancel:] + [ : 216] 12 UIKitCore 0x000000018a4d45b4 -[UITextRefinementInteraction loupeGestureWithState:location:translation:velocity:modifierFlags:shouldCancel:] + [ : 124] 13 UIKitCore 0x000000018a4d3f74 -[UITextRefinementInteraction loupeGesture:] + [ : 548] 14 UIKitCore 0x000000018952eac4 -[UIGestureRecognizerTarget _sendActionWithGestureRecognizer:] + [ : 128] 15 UIKitCore 0x000000018952e934 _UIGestureRecognizerSendTargetActions + [ : 92] 16 UIKitCore 0x000000018952e6f4 _UIGestureRecognizerSendActions + [ : 284] 17 UIKitCore 0x00000001891e1b28 -[UIGestureRecognizer _updateGestureForActiveEvents] + [ : 572] 18 UIKitCore 0x00000001891b3724 _UIGestureEnvironmentUpdate + [ : 2488] 19 CoreFoundation 0x000000018697a1f4 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + [ : 36] 20 CoreFoundation 0x0000000186979f98 __CFRunLoopDoObservers + [ : 552] 21 CoreFoundation 0x00000001869a9028 __CFRunLoopRun + [ : 948] 22 CoreFoundation 0x00000001869a8830 CFRunLoopRunSpecific + [ : 588] 23 GraphicsServices 0x00000001d29881c4 GSEventRunModal + [ : 164] 24 UIKitCore 0x000000018950eeb0 -[UIApplication _run] + [ : 816] 25 UIKitCore 0x00000001895bd5b4 UIApplicationMain + [ : 340] 26 顺丰小哥 0x0000000104423cc0 main + [main.m : 13] 27 (null) 0x00000001ac396ec8 0x0 + 7184412360

Is there a SwuiftUI way to remove the bezel from the compact DatePicker on MacOS? I have an AppKit version but getting the font/background colors to behave is overly complicated for such a simple mission.

Here’s a clearer and more concise version of your question: I’m creating an AppIntent to allow users to log their body weight. My intent includes a @Parameter defined as: @Parameter( title: "Weight", description: "Current Weight", defaultUnit: .pounds, supportsNegativeNumbers: false ) var weight: Measurement<UnitMass> This works but doesn’t respect the user’s Locale and its measurementSystem. When I add defaultUnitAdjustForLocale: true to the @Parameter macro, the default always switches to kilograms, regardless of the locale. How can I correctly set the default unit to match the user’s locale for the purpose of entering a users body weight?

Hi guys, I’m making a simple note taking app and I want to support markdown functionality. I have tried to find libraries and many other GitHub repos but some of them are slow and some of them are very hard to implement and not very customizable. In WWDC 22 apple also made a markdown to html document app and I also looked at that code and it was awesome. It was fast and reliable (Apple btw). But the only problem I am facing is that the markdown text is on the left side and the output format is on the right in the form of html. I don’t want that I want both in the same line. In bear notes and things 3 you can write in markdown and you can see that it is converting in the same line. I have also attached example videos. So, I have markdown parser by apple but the only thing in the way is that it is converting it into a html document. Please help me with this. Also please look into the things 3 video they have also completely customized the text attributes selection menu. By default with UITextView we can only enable text attributes and it shows like this. By clicking more we get the complete formatting menu but not the slider menu which is more convenient. Please also help me this. I don’t know if I can provide apple file but it is from wwdc 22 supporting desktop class interaction

Hi, I see some apps like LinkedIn that doesn't support multi view or split views on iPad, but seems this feature is enabled by default to any new project in Xcode, how to disable it ? Kind Regards

Hi there, I'm currently using UIHostingController to display swift charts in uikit. The problem im facing is that the UIHostingController isn't outputting the intended theme. When the simulator/phone is on dark mode the view is still in light mode. Iv'e tried to force the view to use dark mode with: .environment(\.colorScheme, .dark) But it doesn't seem to help. Here's how I implement the UIHostingController to my view: let controller = UIHostingController(rootView: StatVC()) controller.view.translatesAutoresizingMaksIntoConstraints = false addChild(controller) controller.didMove(toParent: self) view.addSubview(controller.view) where StatVC() is the swiftui view which contains the swift chart.

I want to have my own background and foreground colors for some views and I am having a bit of trouble. I cannot figure out how to remove the margins around some built-in views. One example is below. The ScrollView portion is always black or white, depending on whether I am I dark mode or not. I've added various colors and borders to see what is going on below. I've also tried adding the modifiers to the Scroll View rather than the TextEditor and it doesn't work at all. If I don't have the .frame modifier on the ScrollView, the TextEditor moves to the top of its frame for some reason. I've played with .contentMargins, .edgeInsets, etc. with no luck How do I get the TextEditor to fill the entire ScrollView without the margin? Thanks! import SwiftUI struct TextEditorView: View { @Binding var editString: String var numberOfLines: Int var lineHeight: CGFloat { UIFont.preferredFont(forTextStyle: .body).lineHeight } var viewHeight: CGFloat { lineHeight * CGFloat(numberOfLines) + 8 } var body: some View { ScrollView([.vertical], showsIndicators: true) { TextEditor(text: $editString) .border(Color.red, width: 5) .foregroundStyle(.yellow) .background(.blue) .frame(minHeight:viewHeight, maxHeight: viewHeight) .scrollContentBackground(.hidden) } .frame(minHeight:viewHeight, maxHeight: viewHeight) } }

I am developing a watchOS app with a tab view, and inside one of the tabs, I have a 2x2 collection view layout. Each collection item contains a view that handles: Tap Gesture (.onTapGesture) → Executes an action immediately. Long Press Gesture (LongPressGesture) → Triggers an update when long press starts and again when it ends. Drag Gesture (DragGesture) → Updates the position while dragging and resets values when the gesture ends. Issue: Most of the time, the gestures work correctly, but if another finger swipes on the screen while a long press is active, sometimes the onEnded event does not trigger, leaving the button in an active state. Observations: The onTapGesture executes normally without issues. The LongPressGesture starts as expected, but if another finger interacts with the screen, the onEnded of the drag gesture does not always trigger. This results in the button remaining visually or functionally "pressed" until another interaction occurs. Has anyone encountered similar behavior in watchOS? How can I ensure that long press and drag gestures always complete even when another finger swipes on the screen? Thanks in advance!

I have a simple SwiftUI Text: Text(t) .font(Font.system(size: 9)) Strangely its ideal height seems to be larger when it is empty. I initially observed this in a custom Layout container that wasn't working quite right. Eventually I looked at the height returned by v.dimensions(in:), and found that when t is non-empty the height is 11; when empty, it's 14. Subsequently I observed similar behaviour in a regular VStack container. Has anyone seen anything similar? Are there any properties that could affect this behaviour? (This is on a watch - I don't know if that matters.)

As SwiftUI adoption grows, developers face challenges in effectively measuring and optimizing SwiftUI app performance within automated tests. Currently, the only viable approach to analyzing SwiftUI performance is through Profiling (Instruments), which, while powerful, lacks the ability to be incorporated into automated testing workflows. It would be incredibly valuable if XCTest could introduce new performance metrics specifically tailored for SwiftUI, allowing us to write tests against common performance bottlenecks. Suggested Metrics: View Body Evaluation Count – Tracks how often a SwiftUI body is recomputed to detect unnecessary re-renders. Slow View Bodies – Flags SwiftUI views that take a significant amount of time to compute their body. These metrics would help developers identify inefficiencies early, enforce performance best practices through CI/CD pipelines, and ensure a smooth user experience. I believe adding these performance metrics would be a game-changer for SwiftUI development. Thank you for your time and consideration!

Not sure what could cause this. the UI align differently running on iPhone versus running on Mac. If I remove the HStack, it works but I still would like to know why, and if there is a way to make it right on both platforms. Thank you here is my code @State private var viewModel = FirmwareSelectionViewModel() var body: some View { Form { Section("Setup Name") { TextField ( "", text: $viewModel.setupName ) .foregroundColor(.green ) .disableAutocorrection(true) .onSubmit { print ("On Submit") } } Section("Battery") { HStack() { Text("Volt") TextField("", value: $viewModel.Vnominal, format: .number) .textFieldStyle(.roundedBorder) .foregroundColor(.green ) #if !os(macOS) .keyboardType(.decimalPad) #endif .onChange(of: viewModel.Vnominal) { viewModel.checkEntryValidity() print("Updated Vnominal: \(viewModel.Vnominal)") } Text("Ah") TextField("", value: $viewModel.batteryCapacity, format: .number) .textFieldStyle(.roundedBorder) .foregroundColor(.green ) #if !os(macOS) .keyboardType(.decimalPad) #endif .onChange(of: viewModel.batteryCapacity) { viewModel.checkEntryValidity() print("Updated Battery Capacity: \(viewModel.batteryCapacity)") } } } Section("Firmware Type") { Picker(selection: $viewModel.selectedType, label: EmptyView()) { ForEach(TypeOfFirmware.allCases) { type in Text(type.rawValue).tag(type as TypeOfFirmware) .foregroundColor(.green ) } } .pickerStyle(SegmentedPickerStyle()) Picker(selection: $viewModel.selectedFirmware, label: EmptyView()) { ForEach(viewModel.availableFirmware) { firmware in Text(firmware.rawValue.capitalized).tag(firmware as Firmware) } } .pickerStyle(SegmentedPickerStyle()) } } .onChange(of: viewModel.selectedType) { viewModel.resetFirmwareSelection() } .navigationTitle("Firmware Selection") } }

I am working on a React Native application where I want to modify the native text selection menu (the menu that appears when you long-press on text). Specifically, I want to add a custom option alongside the default ones like Copy, Look Up, Translate, Search Web, and Share. Is there a way to modify the native text selection menu inside a WebView on iOS? How can I add a custom menu option to the default text selection menu while keeping all the default options intact?

I recently noticed an inconsistency in how languages are represented in Apple’s new Translation API compared to Foundation’s Locale system. Observation from the Translation API When retrieving the list of supported languages using: let availableLanguages = try await LanguageAvailability().supportedLanguages The results are: Language(components: Foundation.Locale.Language.Components(languageCode: Optional(uk), script: nil, region: Optional(UA))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(zh), script: nil, region: Optional(TW))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(ko), script: nil, region: Optional(KR))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(en), script: nil, region: Optional(GB))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(de), script: nil, region: Optional(DE))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(zh), script: nil, region: Optional(CN))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(ja), script: nil, region: Optional(JP))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(id), script: nil, region: Optional(ID))) Language(components: Foundation.Locale.Language.Components(languageCode: Optional(nl), script: nil, region: Optional(NL))) .... Key points: • The script component is always nil. • Region codes (CN, TW, etc.) determine the script for languages like Chinese (Simplified or Traditional). • Other languages (e.g., en-GB, en-US, pt-BR) also rely on region-based identification. Observation from Foundation Locale (Locale.current.language) When retrieving the user’s system language setting: systemLanguageObj = Locale.current.language I get a different format where the script component is present, but the region may vary based on user settings. This means that mapping between script and region is not consistent between the two APIs, requiring manual handling. My key questions: 1. Is my current approach correct, or is there a better way to get user language settings that match Translation API identifiers? 2. If no alternative exists, could the Translation API align its language identification method with Foundation Locale to reduce ambiguity? Any insights or suggestions would be greatly appreciated!

Hello! I discovered a bug on Catalyst about a three years ago but it still seems to be not fixed. My bug report number is FB9705748. The Internet is silent on this so I'm even not sure, perhaps it's only me. So to the problem. When you display UICollectionViewController or UIViewController that contains UICollectionView, interact with the collection view then dismiss the view controller, the displayed view controller isn't released if dismissal is done through navigation bar item. The problem occurs only when the run target is My Mac (Mac Catalyst). Everything is fine when you run on iOS or via My Mac (Designed for iPad). The sample project is uploaded to GitHub. It has a video that shows this strange behavior, see the log for 'deinit' messages. I did have some workaround to fix this but it stops to work, presumable on the new macOS. Also, chances are that it's not only UICollectionView which initiates the glitch, it's just that I only encounter it with collection views.