Explore the various UI frameworks available for building app interfaces. Discuss the use cases for different frameworks, share best practices, and get help with specific framework-related questions.

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How do I size a UITextView with scroll disabled?
tl;dr: UITextView does not auto layout when isScrollEnabled = false I have a screen with multiple UITextViews on it, contained within a ScrollView. For each textview, I calculate the height needed to display the entire content in SwiftUI and set it using the .frame(width:height:) modifier. The UITextView will respect the size passed in and layout within the container, but since UITextView is embedded within a UIScrollView, when a user attempts to scroll on the page, often they will scroll within a UITextView block rather than the page. They currently need to scroll along the margins outside of the textview to get the proper behavior. Since I am already calculating the height to display the text, I don't want the UITextView to scroll. However, when I set isScrollEnabled = false, the text view displays in a single long line that gets truncated. I have tried Setting various frame/size attributes but that seems to have zero affect on the layout. Embedding the textView within a UIView, and then sizing the container, but then the textView does not display at all. Setting a fixed size textContainer in the layoutManager but did not work. There's a lot of code so I can't copy/paste it all, but generally, it looks like struct SwiftUITextEditor: View { @State var text: AttributedString = "" var body: some View { ZStack { MyTextViewRepresentable(text: $text) } .dynamicallySized(from: $text) } } struct MyTextViewRepresentable: UIViewRepresentable { @Binding var text: AttributedString let textView = UITextView(usingTextLayoutManager: true) func makeUIView(context: Context) -> UITextView { textView.attributedText = text textView.isScrollEnabled = false } ... }
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255
May ’25
Using App Intents in Live Activity to Pause a Timer
Hello, I am trying to test a concept of a timer stopwatch with Live Activities and integrating buttons like Pause/Resume. When the stopwatch starts, a new Live Activity is created. The stopwatch is managed by the ViewModel, which has functions like start(), pause(), resume(), reset(), and also startLiveActivity(), etc. It uses @AppStorage to store keys like stopWatchModeRaw values, startTimeInterval, etc. The Live Activity state is stored here in the view model using: private var currentActivity: Activity? = nil The Live Activity is started using: private func startActivity() async { guard currentActivity == nil, Activity<StopwatchAttributes>.activities.isEmpty else { if currentActivity == nil { findAndAssignExistingActivity() await updateActivity() } return } let attributes = StopwatchAttributes() let state = StopwatchAttributes.ContentState( .... pass in the content state variables .... ) let content = ActivityContent(state: state, staleDate: nil) do { let activity = try Activity<StopwatchAttributes>.request( attributes: attributes, content: content, pushType: nil ) // Store the activity instance self.currentActivity = activity } catch { print("Error requesting Live Activity: \(error.localizedDescription)") } } and FindAndAssignExistingAcivity does: private func findAndAssignExistingActivity() { if let existingActivity = findActivity(), existingActivity.activityState == .active || existingActivity.activityState == .stale { print("Found existing activity on launch: \(existingActivity.id)") self.currentActivity = existingActivity } else { print("No existing activity found on launch.") self.currentActivity = nil } } UpdateActivity if the activity exists with a guard statement, and then update the activity. This is also used when the user taps Pause in the Stopwatch. The main issue I am facing is with the PauseIntent, it can't find the Live Activity and will always exit at that guard statement. struct PauseIntent: AppIntent { static var title: LocalizedStringResource = "Pause Stopwatch" func perform() async throws -> some IntentResult { guard let defaults = UserDefaults(suiteName: appGroupID) else { return .result() // Simple failure } let currentModeRaw = defaults.integer(forKey: "stopwatchModeRawValue") let currentMode = StopwatchMode(rawValue: currentModeRaw) ?? .reset let startTimeInterval = defaults.double(forKey: "startTimeInterval") // TimeInterval when current running segment started let accumulatedTime = defaults.double(forKey: "accumulatedTime") guard let activity = Activity<StopwatchAttributes>.activities.first else { Self.logger.error("PauseIntent EXIT: No Live Activity found to update. (Activity<StopwatchAttributes>.activities is empty)") return .result() // EXITING HERE, No Live Activity Found, there was nothing found to update... -> It always exits here } followed by rest of the code to update the state of the live activity, but it never executes because the activity = Activity.activities.first always returns false. What seems to be the issue? 1 .Is the method wrong to check for the live activity before attempting to Pause? 2. Can the Live Activity actually Pause the Stopwatch Timer in the main App since the Live Activity is actually a Widget Extension and not the App itself, so it cannot see the data directly?
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148
May ’25
UserDefaults.standard was cleared and app UUDI is also changed when I update new version from app store
Facing issue of NSUserDefaults data got cleared on update new version from app store. so all data of user got cleared and user have to login again. I was having app in store with version 1.1.3 and then we have uploaded new version to store with version 1.1.4 but when user download app from store their data was cleared from UserDefaults.so this is big issue in update. need to help. is that apple updated any process on update. Question How Apple change version build in device when we update app from app store. is it uninstall old build and install new build ? Or it is install new version on old version ? Should UserDefaults.standard will delete on update ? Updating Provisioning profile from manual to automatically cause issue on UserDefaults.standard Like UserDefaults got cleared and uuid will change ? Do we have anythings that we can identify specific user as uniq user ? What is better solution to store login data into SQLite store or in UserDefaults as model ? Will appreciate for your help. this is very big issue and login again on update will make app user more effect
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4.0k
May ’25
Any way to remove the persistent "Allow Paste" pop up after user has given permission?
My app makes constant use of copy paste, allowing the user to past links into the app as a core function. Unfortunately users are forced to press the "Allow Paste" button every single time they copy paste, which in my app is constantly. Also the default option is "Deny" even after the user has previously given permission. Is there any way to eliminate the pop up after the user has given permission to the app? I would propose that there be a third option for "Always Allow" paste from this app for the user to select which would silence subsequent pop ups. If the goal is to make a seamless experience for users then we need to consider if we are making things too difficult in the name of security?
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128
May ’25
How to create a QuickTime recording like panel?
QuickTime recording palette behaves in a way which I want to replicate in my desktop app - specifically the behaviour when switching spaces, it appears on top. Currently, my app appears on all spaces, and even over fullscreen applications BUT it already exists when I switch to the space, this feels disjointed. I can't find a solution to this behaviour. Here's the Window Collection Behaviours I've tried (on an NSPanel): FullScreenAuxiliary - appears over fullscreen apps. CanJoinAllSpaces - appears on all spaces. These two options make the dock show up on all spaces in the same position, but on each space they already exists. I've tried this behaviour too: MoveToActiveSpace - which as per docs would move the window into active space only when its reopened, mine stays open all the time. I can't find any more information on how QuickTime achieves this.
Topic: UI Frameworks SubTopic: SwiftUI
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75
May ’25
memory leak upon mouse down in a NSTextField
Dear all, Sorry if the topic has already been commented but I could not be able to find it in over 10,000 picks using the forum search field... My problem is that with any NSTextField in my app, a click will result in a memory leak. There is no code attached, just bindings to NSNumber properties. How can I fix this ? Thanks for your help. Best regards Chris
Topic: UI Frameworks SubTopic: AppKit
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79
May ’25
Avoid shift effect on ManagedAppView inside a List
Hello, I tried to use the ManagedAppView component to display a list of apps, I have a text field above my list to make it searchable. The problem is that when the keyboard appear, all my ManagedAppView components shift half of their height up, inside there list cell, so they are only half visible with the rest of the cell blank. As the component is Apple Internal, I didn't find any solution to avoid that, is there any fix to have this component stays in place even when the keyboard appear ? I tried to replace the ManagedAppView by other components and the issue arise only with ManagedAppView.
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166
May ’25
Incorrect text layout
This text is cut off for some unknown reason, but if you explicitly specify the default font, it is displayed correctly. Various solutions like .fixedSize(horizontal:,), frame(maxWidth:), lineLimit() do not solve the problem. Any other text does not have such problems. The bug is reproduced on iPhone 12 (iOS 18.4.1) public var body: some View { Text("Включите уведомления, чтобы первыми узнавать о новых коллекциях, эксклюзивных предложениях и статусе доставки") .padding(.horizontal) // .font(.system(size: 17)) // it works correctly with this }
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143
May ’25
How to correctly set a Picker's selection and contents in SwiftUI for macOS?
How do you atomically set a Picker's selection and contents on macOS such that you don't end up in a situation where the selection is not present within the Picker's content? I presume Picker on macOS is implemented as an NSPopUpButton and an NSPopUpButton doesn't really like the concept of "no selection". SwiftUI, when presented with that, outputs: Picker: the selection "nil" is invalid and does not have an associated tag, this will give undefined results. Consider the following pseudo code: struct ParentView: View { @State private var items: [Item] var body: some View { ChildView(items: items) } } struct ChildView: View { let items: [Item] @State private var selectedItem: Item? var body: some View { Picker("", selection: $selectedItem) { ForEach(items) { item in Text(item.name).tag(item) } } } } When items gets passed down from ParentView to the ChildView, it's entirely possible that the current value in selectedItem represents an Item that is not longer in the items[] array. You can "catch" that by using .onAppear, .task, .onChange and maybe some other modifiers, but not until after at least one render pass has happened and an error has likely been reported because selectedItem is nil or it's not represented in the items[] array. Because selectedItem is private state, a value can't easily be passed down from the parent view, though even if it could that just kind of moves the problem one level higher up. What is the correct way to handle this type of data flow in SwiftUI for macOS?
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215
May ’25
NSTableView batch update issue
I create a simple list, there are two kind of item: conversation and message, if click a conversation, it will expand it's messages. So there will be some insert and remove updates. I calculate the difference results and perform the batch update. displayItems = newDisplayItems tableView.beginUpdates() tableView.removeRows(at: IndexSet(removeIndex), withAnimation: [.effectFade, .slideUp]) tableView.insertRows(at: IndexSet(insertIndex), withAnimation: [.effectFade, .slideDown]) tableView.endUpdates() In most cases, the animation looks fine, but when the mock data is large (> 1000?) and called scrollRowToVisible to scroll to the last row in viewDidAppear, then click some conversations above, the UI broken. Is there something wrong? Would appreciate help from someone experienced with NSTableView. Example code
Topic: UI Frameworks SubTopic: AppKit
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98
May ’25
iOS 18.4.1 Keyboard Extension Dark Mode Background Issue
Background Color Issue in Custom Keyboard Extension in Dark Mode for iOS 18.4.1 Issue Description I'm developing a custom keyboard extension for iOS 18.4.1 and experiencing an issue with background colors when using Dark Mode. After a user makes a selection from a menu in the keyboard, the background color of a view unexpectedly changes to white instead of maintaining the dark theme color. Steps to Reproduce Enable Dark Mode on the device Activate the custom keyboard in any text field Perform a specific interaction (selecting an item from a menu) After selection, the background of the view turns white instead of remaining dark Technical Details The issue appears to be related to UIScrollView's background color behavior The problem doesn't occur on initial display of the menu, only after user interaction I've attempted to set background colors explicitly on the view hierarchy, but the issue persists Environment iOS 18.4.1 Xcode 16.0 Custom keyboard extension Questions Has anyone encountered similar issues with view background colors changing after user interactions in keyboard extensions on iOS 18.4.1? Is there a recommended approach to maintain dark background colors in keyboard extensions after user selections? Could this be related to a change in how UIScrollView handles background colors in recent iOS versions? Thank you for any assistance or insights.
Topic: UI Frameworks SubTopic: UIKit
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129
May ’25
CarPlay selection highlightning
It looks like I'm one of the rare developers dealing with CarPlay... I develop a CarPlay extension for my apps. A few things: especially when using the CarPlay I/O window in iOS Simulator, I get random selection highlightning for list items: I have three list templates in a tab template; once I reselect a list using the tab which has been selected before, the initial list item highlights / returns to normal every refresh of the list content; while this doesn't happen for my real world Sony CarPlay device, I'd rather not see such disturbing highlighting for my users. I do not update the template structs or items here, it is just content like text of detailText I update. Question: how to remove highlightning programmatically - especially for devices with touch screen? I have one user who reports auto-selection of UI elements while driving; I assume this is some problem with his touch screen, but it may be a general issue too. Question: anyone with similar observations connecting my iPhone to the stand-alone Car Play simulator doesn't work; I had it working before, so it might be related to a recent iOS beta... Any hints / observations are welcome. The CarPlay community really seems to be small and I'd like to hear other's experience on the named items.
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May ’25
Double < Back Button Issue Reappears in DocumentGroup on Xcode 16.3 + iOS 18.4+
The workaround of using .toolbarRole(.automatic) in DocumentGroup to avoid the double back button no longer works on Xcode 16.3 + iOS 18.4 and above. After cross-testing, here are the results: Xcode 16.3 + iOS 18.5 = Issue present Xcode 16.3 + iOS 18.4 = Issue present Xcode 16.3 + iOS 18.3 = Successfully avoids double back button Xcode 16.2 + iOS 18.5 = Successfully avoids double back button Xcode 16.2 + iOS 18.4 = Successfully avoids double back button Xcode 16.2 + iOS 18.3 = Successfully avoids double back button
Topic: UI Frameworks SubTopic: SwiftUI
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May ’25
SwitUI preview loads indefinitely
Hi! I develop an iOS library and I met an issue with SwiftUI previews in iOS app project with my library integrated. After I open preview, build for preview finishes successfully, but preview itself never appears. I failed to find any error messages or any other indicators of what went wrong or how to fix it. Switching to legacy preview execution seems to fix problem, but I think that is not ideal. Could you help fixing this? Xcode 16.2, Simulator iPhone 16, iOS 18.2 Project to reproduce - https://drive.google.com/file/d/1cU6JKwshK_wQfe9YIqcMg3UGWq45OYlx/view?usp=sharing Preview diagnostics - https://drive.google.com/file/d/1kPcgVSSqreiepGuqhdIoCW2rLSicgsWr/view?usp=sharing
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359
May ’25
Food-Truck-Sample navigation broken from Live Activity?
https://github.com/apple/sample-food-truck Hi! I'm seeing what looks like some weird navigation issue in the Food Truck app. It's from the Live Activity that should deep link to a specific point in the app. There seems be some state where the app is not linking to the correct component. Here are my repro steps on iPhone: Start live activity from OrderDetailView. Navigate to Sidebar component. Tap the Live Activity. App opens TruckView. The App should be opening the OrderDetailView for the Order that was passed to the Live Activity. This seems to work when the app is not currently on Sidebar. Any ideas? I'm testing this on iPhone OS 18.4.1. Is this an issue inside NavigationSplitView? Is this an issue with how Food Truck handles deeplinking?
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75
May ’25
Tab bar inline icon text .compact mode in size classes in iPad in iOS 18..4.1
I am trying to do inline to icon and text in tab bar but it is not allowing me to do it in compact, but it showing me in regular mode , but in regular mode tab bar going at top in portrait mode , But my requirement is tab bar required in bottom with icon and text in inline it showed by horizontally but it showing to me stacked vertically, will you guide me on this so that I can push the build to live users.
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143
May ’25
UIViewRepresentable never dismantled on deletion (MEMORY LEAK)
I have find out that a UIViewRepresentable, even with a simples UIView, seems to never be dismantled when deleted from a ForEach and this can cause serious crashes. In the following example you can observe this behavior by deleting a row from the list. The dismantleUIView function of SomeUIViewRepresentable or the deinit of SomeUIView are never called. Has anyone faced this and found a solution for it? I have also filled a Feedback: FB11979117 class SomeUIView: UIView {     deinit {         print(#function)     } } struct SomeUIViewRepresentable: UIViewRepresentable {     func makeUIView(context: Context) -> SomeUIView {         let uiView = SomeUIView()         uiView.backgroundColor = .systemBlue         return uiView     }     func updateUIView(_ uiView: SomeUIView, context: Context) { }     static func dismantleUIView(_ uiView: SomeUIView, coordinator: Coordinator) {         print(#function)     } } struct Model: Identifiable {     let id = UUID() } struct ContentView: View {     @State var models = [Model(), Model(), Model(), Model(), Model()]     var body: some View {         List {             ForEach(models) { _ in                 SomeUIViewRepresentable()             }             .onDelete {                 models.remove(atOffsets: $0)             }         }     } }
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1.5k
May ’25
Keep ScrollView position when adding items on the top
I am using a LayzVStack embedded into a ScrollView. The list items are fetched from a core data store by using a @FetchResult or I tested it also with the new @Query command coming with SwiftData. The list has one hundred items 1, 2, 3, ..., 100. The user scrolled the ScrollView so that items 50, 51, ... 60 are visible on screen. Now new data will be fetched from the server and updates the CoreData or SwiftData model. When I add new items to the end of the list (e.g 101, 102, 103, ...) then the ScrollView is keeping its position. Opposite to this when I add new items to the top (0, -1, -2, -3, ...) then the ScrollView scrolls down. Is there a way with the new SwiftData and SwiftUI ScrollView modifiers to update my list model without scrolling like with UIKit where you can query and set the scroll offset pixel wise?
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1.0.0k
May ’25
Scene.windowIdealSize(.fitToContent) seems not working
Hi everyone, Something didn't work in my environment so I wrote some demo code: import SwiftUI @main struct DemoApp: App { var body: some Scene { WindowGroup { Color.accentColor.opacity(1/4) .frame(idealWidth: 800, idealHeight: 800) } .windowIdealSize(.fitToContent) } } I expected a 800*800 window (then +28pt top) using .windowIdealSize(.fitToContent). Otherwise I can't control these views that use up available space such as Color, Spacer, GeometryReader, etc. Was I missing something? Or this is a problem or intended framework design? Environments: macOS 15.4.1 (24E263) and 15.5 beta 4 (24F5068b) Xcode 16.3 (16E140)
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May ’25
How do I size a UITextView with scroll disabled?
tl;dr: UITextView does not auto layout when isScrollEnabled = false I have a screen with multiple UITextViews on it, contained within a ScrollView. For each textview, I calculate the height needed to display the entire content in SwiftUI and set it using the .frame(width:height:) modifier. The UITextView will respect the size passed in and layout within the container, but since UITextView is embedded within a UIScrollView, when a user attempts to scroll on the page, often they will scroll within a UITextView block rather than the page. They currently need to scroll along the margins outside of the textview to get the proper behavior. Since I am already calculating the height to display the text, I don't want the UITextView to scroll. However, when I set isScrollEnabled = false, the text view displays in a single long line that gets truncated. I have tried Setting various frame/size attributes but that seems to have zero affect on the layout. Embedding the textView within a UIView, and then sizing the container, but then the textView does not display at all. Setting a fixed size textContainer in the layoutManager but did not work. There's a lot of code so I can't copy/paste it all, but generally, it looks like struct SwiftUITextEditor: View { @State var text: AttributedString = "" var body: some View { ZStack { MyTextViewRepresentable(text: $text) } .dynamicallySized(from: $text) } } struct MyTextViewRepresentable: UIViewRepresentable { @Binding var text: AttributedString let textView = UITextView(usingTextLayoutManager: true) func makeUIView(context: Context) -> UITextView { textView.attributedText = text textView.isScrollEnabled = false } ... }
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1
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255
Activity
May ’25
Using App Intents in Live Activity to Pause a Timer
Hello, I am trying to test a concept of a timer stopwatch with Live Activities and integrating buttons like Pause/Resume. When the stopwatch starts, a new Live Activity is created. The stopwatch is managed by the ViewModel, which has functions like start(), pause(), resume(), reset(), and also startLiveActivity(), etc. It uses @AppStorage to store keys like stopWatchModeRaw values, startTimeInterval, etc. The Live Activity state is stored here in the view model using: private var currentActivity: Activity? = nil The Live Activity is started using: private func startActivity() async { guard currentActivity == nil, Activity<StopwatchAttributes>.activities.isEmpty else { if currentActivity == nil { findAndAssignExistingActivity() await updateActivity() } return } let attributes = StopwatchAttributes() let state = StopwatchAttributes.ContentState( .... pass in the content state variables .... ) let content = ActivityContent(state: state, staleDate: nil) do { let activity = try Activity<StopwatchAttributes>.request( attributes: attributes, content: content, pushType: nil ) // Store the activity instance self.currentActivity = activity } catch { print("Error requesting Live Activity: \(error.localizedDescription)") } } and FindAndAssignExistingAcivity does: private func findAndAssignExistingActivity() { if let existingActivity = findActivity(), existingActivity.activityState == .active || existingActivity.activityState == .stale { print("Found existing activity on launch: \(existingActivity.id)") self.currentActivity = existingActivity } else { print("No existing activity found on launch.") self.currentActivity = nil } } UpdateActivity if the activity exists with a guard statement, and then update the activity. This is also used when the user taps Pause in the Stopwatch. The main issue I am facing is with the PauseIntent, it can't find the Live Activity and will always exit at that guard statement. struct PauseIntent: AppIntent { static var title: LocalizedStringResource = "Pause Stopwatch" func perform() async throws -> some IntentResult { guard let defaults = UserDefaults(suiteName: appGroupID) else { return .result() // Simple failure } let currentModeRaw = defaults.integer(forKey: "stopwatchModeRawValue") let currentMode = StopwatchMode(rawValue: currentModeRaw) ?? .reset let startTimeInterval = defaults.double(forKey: "startTimeInterval") // TimeInterval when current running segment started let accumulatedTime = defaults.double(forKey: "accumulatedTime") guard let activity = Activity<StopwatchAttributes>.activities.first else { Self.logger.error("PauseIntent EXIT: No Live Activity found to update. (Activity<StopwatchAttributes>.activities is empty)") return .result() // EXITING HERE, No Live Activity Found, there was nothing found to update... -> It always exits here } followed by rest of the code to update the state of the live activity, but it never executes because the activity = Activity.activities.first always returns false. What seems to be the issue? 1 .Is the method wrong to check for the live activity before attempting to Pause? 2. Can the Live Activity actually Pause the Stopwatch Timer in the main App since the Live Activity is actually a Widget Extension and not the App itself, so it cannot see the data directly?
Replies
1
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148
Activity
May ’25
UserDefaults.standard was cleared and app UUDI is also changed when I update new version from app store
Facing issue of NSUserDefaults data got cleared on update new version from app store. so all data of user got cleared and user have to login again. I was having app in store with version 1.1.3 and then we have uploaded new version to store with version 1.1.4 but when user download app from store their data was cleared from UserDefaults.so this is big issue in update. need to help. is that apple updated any process on update. Question How Apple change version build in device when we update app from app store. is it uninstall old build and install new build ? Or it is install new version on old version ? Should UserDefaults.standard will delete on update ? Updating Provisioning profile from manual to automatically cause issue on UserDefaults.standard Like UserDefaults got cleared and uuid will change ? Do we have anythings that we can identify specific user as uniq user ? What is better solution to store login data into SQLite store or in UserDefaults as model ? Will appreciate for your help. this is very big issue and login again on update will make app user more effect
Replies
4
Boosts
1
Views
4.0k
Activity
May ’25
Any way to remove the persistent "Allow Paste" pop up after user has given permission?
My app makes constant use of copy paste, allowing the user to past links into the app as a core function. Unfortunately users are forced to press the "Allow Paste" button every single time they copy paste, which in my app is constantly. Also the default option is "Deny" even after the user has previously given permission. Is there any way to eliminate the pop up after the user has given permission to the app? I would propose that there be a third option for "Always Allow" paste from this app for the user to select which would silence subsequent pop ups. If the goal is to make a seamless experience for users then we need to consider if we are making things too difficult in the name of security?
Replies
3
Boosts
0
Views
128
Activity
May ’25
How to create a QuickTime recording like panel?
QuickTime recording palette behaves in a way which I want to replicate in my desktop app - specifically the behaviour when switching spaces, it appears on top. Currently, my app appears on all spaces, and even over fullscreen applications BUT it already exists when I switch to the space, this feels disjointed. I can't find a solution to this behaviour. Here's the Window Collection Behaviours I've tried (on an NSPanel): FullScreenAuxiliary - appears over fullscreen apps. CanJoinAllSpaces - appears on all spaces. These two options make the dock show up on all spaces in the same position, but on each space they already exists. I've tried this behaviour too: MoveToActiveSpace - which as per docs would move the window into active space only when its reopened, mine stays open all the time. I can't find any more information on how QuickTime achieves this.
Topic: UI Frameworks SubTopic: SwiftUI
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0
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0
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75
Activity
May ’25
memory leak upon mouse down in a NSTextField
Dear all, Sorry if the topic has already been commented but I could not be able to find it in over 10,000 picks using the forum search field... My problem is that with any NSTextField in my app, a click will result in a memory leak. There is no code attached, just bindings to NSNumber properties. How can I fix this ? Thanks for your help. Best regards Chris
Topic: UI Frameworks SubTopic: AppKit
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0
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0
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79
Activity
May ’25
Avoid shift effect on ManagedAppView inside a List
Hello, I tried to use the ManagedAppView component to display a list of apps, I have a text field above my list to make it searchable. The problem is that when the keyboard appear, all my ManagedAppView components shift half of their height up, inside there list cell, so they are only half visible with the rest of the cell blank. As the component is Apple Internal, I didn't find any solution to avoid that, is there any fix to have this component stays in place even when the keyboard appear ? I tried to replace the ManagedAppView by other components and the issue arise only with ManagedAppView.
Replies
2
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0
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166
Activity
May ’25
Incorrect text layout
This text is cut off for some unknown reason, but if you explicitly specify the default font, it is displayed correctly. Various solutions like .fixedSize(horizontal:,), frame(maxWidth:), lineLimit() do not solve the problem. Any other text does not have such problems. The bug is reproduced on iPhone 12 (iOS 18.4.1) public var body: some View { Text("Включите уведомления, чтобы первыми узнавать о новых коллекциях, эксклюзивных предложениях и статусе доставки") .padding(.horizontal) // .font(.system(size: 17)) // it works correctly with this }
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2
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143
Activity
May ’25
How to correctly set a Picker's selection and contents in SwiftUI for macOS?
How do you atomically set a Picker's selection and contents on macOS such that you don't end up in a situation where the selection is not present within the Picker's content? I presume Picker on macOS is implemented as an NSPopUpButton and an NSPopUpButton doesn't really like the concept of "no selection". SwiftUI, when presented with that, outputs: Picker: the selection "nil" is invalid and does not have an associated tag, this will give undefined results. Consider the following pseudo code: struct ParentView: View { @State private var items: [Item] var body: some View { ChildView(items: items) } } struct ChildView: View { let items: [Item] @State private var selectedItem: Item? var body: some View { Picker("", selection: $selectedItem) { ForEach(items) { item in Text(item.name).tag(item) } } } } When items gets passed down from ParentView to the ChildView, it's entirely possible that the current value in selectedItem represents an Item that is not longer in the items[] array. You can "catch" that by using .onAppear, .task, .onChange and maybe some other modifiers, but not until after at least one render pass has happened and an error has likely been reported because selectedItem is nil or it's not represented in the items[] array. Because selectedItem is private state, a value can't easily be passed down from the parent view, though even if it could that just kind of moves the problem one level higher up. What is the correct way to handle this type of data flow in SwiftUI for macOS?
Replies
1
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215
Activity
May ’25
NSTableView batch update issue
I create a simple list, there are two kind of item: conversation and message, if click a conversation, it will expand it's messages. So there will be some insert and remove updates. I calculate the difference results and perform the batch update. displayItems = newDisplayItems tableView.beginUpdates() tableView.removeRows(at: IndexSet(removeIndex), withAnimation: [.effectFade, .slideUp]) tableView.insertRows(at: IndexSet(insertIndex), withAnimation: [.effectFade, .slideDown]) tableView.endUpdates() In most cases, the animation looks fine, but when the mock data is large (> 1000?) and called scrollRowToVisible to scroll to the last row in viewDidAppear, then click some conversations above, the UI broken. Is there something wrong? Would appreciate help from someone experienced with NSTableView. Example code
Topic: UI Frameworks SubTopic: AppKit
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2
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0
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98
Activity
May ’25
What field to enter in the UIApplicationSceneManifest for the iPad StoryBoard
I'm migrating my apps to the SceneKit platform that Apple request to adopt. Yet for an app with an iPad specific version I was not able to find the value in the ScenManifest to use to designate the iPad storyboard. May someone help? Thanks.
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2
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0
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151
Activity
May ’25
iOS 18.4.1 Keyboard Extension Dark Mode Background Issue
Background Color Issue in Custom Keyboard Extension in Dark Mode for iOS 18.4.1 Issue Description I'm developing a custom keyboard extension for iOS 18.4.1 and experiencing an issue with background colors when using Dark Mode. After a user makes a selection from a menu in the keyboard, the background color of a view unexpectedly changes to white instead of maintaining the dark theme color. Steps to Reproduce Enable Dark Mode on the device Activate the custom keyboard in any text field Perform a specific interaction (selecting an item from a menu) After selection, the background of the view turns white instead of remaining dark Technical Details The issue appears to be related to UIScrollView's background color behavior The problem doesn't occur on initial display of the menu, only after user interaction I've attempted to set background colors explicitly on the view hierarchy, but the issue persists Environment iOS 18.4.1 Xcode 16.0 Custom keyboard extension Questions Has anyone encountered similar issues with view background colors changing after user interactions in keyboard extensions on iOS 18.4.1? Is there a recommended approach to maintain dark background colors in keyboard extensions after user selections? Could this be related to a change in how UIScrollView handles background colors in recent iOS versions? Thank you for any assistance or insights.
Topic: UI Frameworks SubTopic: UIKit
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0
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0
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129
Activity
May ’25
CarPlay selection highlightning
It looks like I'm one of the rare developers dealing with CarPlay... I develop a CarPlay extension for my apps. A few things: especially when using the CarPlay I/O window in iOS Simulator, I get random selection highlightning for list items: I have three list templates in a tab template; once I reselect a list using the tab which has been selected before, the initial list item highlights / returns to normal every refresh of the list content; while this doesn't happen for my real world Sony CarPlay device, I'd rather not see such disturbing highlighting for my users. I do not update the template structs or items here, it is just content like text of detailText I update. Question: how to remove highlightning programmatically - especially for devices with touch screen? I have one user who reports auto-selection of UI elements while driving; I assume this is some problem with his touch screen, but it may be a general issue too. Question: anyone with similar observations connecting my iPhone to the stand-alone Car Play simulator doesn't work; I had it working before, so it might be related to a recent iOS beta... Any hints / observations are welcome. The CarPlay community really seems to be small and I'd like to hear other's experience on the named items.
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0
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0
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99
Activity
May ’25
Double < Back Button Issue Reappears in DocumentGroup on Xcode 16.3 + iOS 18.4+
The workaround of using .toolbarRole(.automatic) in DocumentGroup to avoid the double back button no longer works on Xcode 16.3 + iOS 18.4 and above. After cross-testing, here are the results: Xcode 16.3 + iOS 18.5 = Issue present Xcode 16.3 + iOS 18.4 = Issue present Xcode 16.3 + iOS 18.3 = Successfully avoids double back button Xcode 16.2 + iOS 18.5 = Successfully avoids double back button Xcode 16.2 + iOS 18.4 = Successfully avoids double back button Xcode 16.2 + iOS 18.3 = Successfully avoids double back button
Topic: UI Frameworks SubTopic: SwiftUI
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1
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0
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63
Activity
May ’25
SwitUI preview loads indefinitely
Hi! I develop an iOS library and I met an issue with SwiftUI previews in iOS app project with my library integrated. After I open preview, build for preview finishes successfully, but preview itself never appears. I failed to find any error messages or any other indicators of what went wrong or how to fix it. Switching to legacy preview execution seems to fix problem, but I think that is not ideal. Could you help fixing this? Xcode 16.2, Simulator iPhone 16, iOS 18.2 Project to reproduce - https://drive.google.com/file/d/1cU6JKwshK_wQfe9YIqcMg3UGWq45OYlx/view?usp=sharing Preview diagnostics - https://drive.google.com/file/d/1kPcgVSSqreiepGuqhdIoCW2rLSicgsWr/view?usp=sharing
Replies
7
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0
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359
Activity
May ’25
Food-Truck-Sample navigation broken from Live Activity?
https://github.com/apple/sample-food-truck Hi! I'm seeing what looks like some weird navigation issue in the Food Truck app. It's from the Live Activity that should deep link to a specific point in the app. There seems be some state where the app is not linking to the correct component. Here are my repro steps on iPhone: Start live activity from OrderDetailView. Navigate to Sidebar component. Tap the Live Activity. App opens TruckView. The App should be opening the OrderDetailView for the Order that was passed to the Live Activity. This seems to work when the app is not currently on Sidebar. Any ideas? I'm testing this on iPhone OS 18.4.1. Is this an issue inside NavigationSplitView? Is this an issue with how Food Truck handles deeplinking?
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0
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0
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75
Activity
May ’25
Tab bar inline icon text .compact mode in size classes in iPad in iOS 18..4.1
I am trying to do inline to icon and text in tab bar but it is not allowing me to do it in compact, but it showing me in regular mode , but in regular mode tab bar going at top in portrait mode , But my requirement is tab bar required in bottom with icon and text in inline it showed by horizontally but it showing to me stacked vertically, will you guide me on this so that I can push the build to live users.
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0
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0
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143
Activity
May ’25
UIViewRepresentable never dismantled on deletion (MEMORY LEAK)
I have find out that a UIViewRepresentable, even with a simples UIView, seems to never be dismantled when deleted from a ForEach and this can cause serious crashes. In the following example you can observe this behavior by deleting a row from the list. The dismantleUIView function of SomeUIViewRepresentable or the deinit of SomeUIView are never called. Has anyone faced this and found a solution for it? I have also filled a Feedback: FB11979117 class SomeUIView: UIView {     deinit {         print(#function)     } } struct SomeUIViewRepresentable: UIViewRepresentable {     func makeUIView(context: Context) -> SomeUIView {         let uiView = SomeUIView()         uiView.backgroundColor = .systemBlue         return uiView     }     func updateUIView(_ uiView: SomeUIView, context: Context) { }     static func dismantleUIView(_ uiView: SomeUIView, coordinator: Coordinator) {         print(#function)     } } struct Model: Identifiable {     let id = UUID() } struct ContentView: View {     @State var models = [Model(), Model(), Model(), Model(), Model()]     var body: some View {         List {             ForEach(models) { _ in                 SomeUIViewRepresentable()             }             .onDelete {                 models.remove(atOffsets: $0)             }         }     } }
Replies
1
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3
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1.5k
Activity
May ’25
Keep ScrollView position when adding items on the top
I am using a LayzVStack embedded into a ScrollView. The list items are fetched from a core data store by using a @FetchResult or I tested it also with the new @Query command coming with SwiftData. The list has one hundred items 1, 2, 3, ..., 100. The user scrolled the ScrollView so that items 50, 51, ... 60 are visible on screen. Now new data will be fetched from the server and updates the CoreData or SwiftData model. When I add new items to the end of the list (e.g 101, 102, 103, ...) then the ScrollView is keeping its position. Opposite to this when I add new items to the top (0, -1, -2, -3, ...) then the ScrollView scrolls down. Is there a way with the new SwiftData and SwiftUI ScrollView modifiers to update my list model without scrolling like with UIKit where you can query and set the scroll offset pixel wise?
Replies
8
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1
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1.0.0k
Activity
May ’25
Scene.windowIdealSize(.fitToContent) seems not working
Hi everyone, Something didn't work in my environment so I wrote some demo code: import SwiftUI @main struct DemoApp: App { var body: some Scene { WindowGroup { Color.accentColor.opacity(1/4) .frame(idealWidth: 800, idealHeight: 800) } .windowIdealSize(.fitToContent) } } I expected a 800*800 window (then +28pt top) using .windowIdealSize(.fitToContent). Otherwise I can't control these views that use up available space such as Color, Spacer, GeometryReader, etc. Was I missing something? Or this is a problem or intended framework design? Environments: macOS 15.4.1 (24E263) and 15.5 beta 4 (24F5068b) Xcode 16.3 (16E140)
Replies
2
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0
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149
Activity
May ’25