I have a NSRulerView with a vertical orientation. It works fine from macOS 10.13 to 11.x.
In macOS Monterey (12.2.1 here), the ruler view is not receiving drawHashMarksAndLabelsInRect: messages when the associated NSTextView is scrolled vertically.
When the parent NSScrollView is resized, the ruler view is correctly refreshed on all macOS versions.
[Q] Is it a known bug in macOS Monterey?
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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Hey there, I'm new to Swift and currently building my first app. I'm having the error "Extra trailing closure passed in call" in a section and already compared it to working sections and just can't find the error in my code. Maybe you guys can help me:
Form {
Section("Essential Information") {
TextField("Title", text: $title)
TextField("Composer", text: $composer)
TextField("Opus", text: $opus)
}
The error is occurring in the section line.
There are over sections that work perfectly fine:
Section("Additional Details") {
TextField("Epoch", text: $epoch)
TextField("Type", text: $type)
TextField("Accompaniment", text: $accompaniment)
TextField("Length (minutes)", value: $length, format: .number)
.keyboardType(.numberPad)
TextField("Key", text: $key)
TextField("Difficulty", text: $difficulty)
TextField("Tempo (BPM)", value: $tempo, format: .number)
.keyboardType(.numberPad)
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
I config of an alternate icon on the App Store Connect product page optimization. After the app launches, can I retrieve the name of this configured icon through UIApplication.shared.alternateIconName?
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!
I'm implementing a custom text editor in SwiftUI using a UITextView wrapped in a UIViewRepresentable. The text editor works for basic text entry, but I'm encountering an issue with scrolling behavior.
When the UITextView becomes the first responder (when tapped), the parent ScrollView doesn't automatically scroll to make the text view visible. Instead, the scroll position jumps to the last known position (scrolls to a different text view that was previously focused).
Here's my implementation reduced to the minimum:
struct SpacedTextEditor: View {
@Binding var text: String
var body: some View {
MinimalEditor(text: $text)
}
}
private struct MinimalEditor: UIViewRepresentable {
@Binding var text: String
func makeUIView(context: Context) -> UITextView {
let textView = UITextView()
textView.backgroundColor = .clear
textView.delegate = context.coordinator
textView.isScrollEnabled = false
textView.text = text
return textView
}
func updateUIView(_ textView: UITextView, context _: Context) {
if textView.text != text {
textView.text = text
}
}
func makeCoordinator() -> Coordinator {
Coordinator(text: $text)
}
class Coordinator: NSObject, UITextViewDelegate {
var text: Binding<String>
init(text: Binding<String>) {
self.text = text
}
func textViewDidChange(_ textView: UITextView) {
text.wrappedValue = textView.text
}
}
}
The text editor is placed inside a ScrollView in my parent view. How can I ensure that when a user taps on the text editor, the ScrollView properly scrolls to make it fully visible or at least it doesn't jump to where the textfield is not even visible?
I need to use a custom textfield because I need to be able to modify the space between lines, and I didn't find a way to do this using the swiftUI component.
Topic:
UI Frameworks
SubTopic:
SwiftUI
My app is experiencing a recurring crash in the PRD environment, but it cannot be reproduced locally or in QA testing.
Below is the crash log—I’d appreciate any help or insights on how to diagnose and resolve this issue. Thank you!
0 libobjc.A.dylib 0x2354 objc_release_x0 + 16
1 libobjc.A.dylib 0x2354 objc_release + 16
2 libobjc.A.dylib 0x4e38 AutoreleasePoolPage::releaseUntil(objc_object**) + 204
3 libobjc.A.dylib 0x4b8c objc_autoreleasePoolPop + 260
4 FrontBoardServices 0x1f4d0 -[FBSWorkspace _calloutQueue_executeCalloutFromSource:withBlock:] + 176
5 FrontBoardServices 0x2eb90 -[FBSWorkspaceScenesClient _callOutQueue_sendDidCreateForScene:transitionContext:completion:] + 468
6 libdispatch.dylib 0x3fa8 _dispatch_client_callout + 20
7 libdispatch.dylib 0x79f0 _dispatch_block_invoke_direct + 284
8 FrontBoardServices 0x18378 __FBSSERIALQUEUE_IS_CALLING_OUT_TO_A_BLOCK__ + 52
9 FrontBoardServices 0x182f8 -[FBSMainRunLoopSerialQueue _targetQueue_performNextIfPossible] + 240
10 FrontBoardServices 0x181d0 -[FBSMainRunLoopSerialQueue _performNextFromRunLoopSource] + 28
11 CoreFoundation 0x73f3c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
12 CoreFoundation 0x73ed0 __CFRunLoopDoSource0 + 176
13 CoreFoundation 0x76b94 __CFRunLoopDoSources0 + 344
14 CoreFoundation 0x75d2c __CFRunLoopRun + 840
15 CoreFoundation 0xc8274 CFRunLoopRunSpecific + 588
16 GraphicsServices 0x14c0 GSEventRunModal + 164
17 UIKitCore 0x3ee77c -[UIApplication _run] + 816
18 UIKitCore 0x14e64 UIApplicationMain + 340
Topic:
UI Frameworks
SubTopic:
UIKit
I must admit my knowledge of swift is limited, and I cannot wrap my head around this problem.
I've defined this protocol, so I can use different auth providers in my app.
protocol AuthRepository {
associatedtype AuthData
associatedtype AuthResponseData
associatedtype RegistrationData
associatedtype RegistrationResponseData
func login(with data: AuthData) async throws -> AuthResponseData?
func register(with data: RegistrationData) async throws -> RegistrationResponseData?
}
and an implementation for my server
struct MyServerAuthData {
let email: String
let password: String
}
struct MyServerAuthResponseData {
let token: String
}
struct MyServerRegistrationData {
let email: String
let password: String
let name: String
}
actor AuthRepositoryImpl: AuthRepository {
func login(with data: MyServerAuthData) async throws -> MyServerAuthResponseData? {
...
}
func register(with data: MyServerRegistrationData) async throws -> Void? {
...
}
}
To use across the app, I've created this ViewModel
@MainActor
final class AuthViewModel<T: AuthRepository>: ObservableObject {
private let repository: T
init(repository: T) {
self.repository = repository
}
func login(data: T.AuthData) async throws -> T.AuthResponseData? {
try await repository.login(with: data)
}
func register(with data: T.RegistrationData) async throws {
try await repository.register(with: data)
}
}
defined in the app as
@main
struct MyApp: App {
@StateObject var authViewModel = AuthViewModel(repository: AuthRepositoryImpl())
var body: some Scene {
WindowGroup {
ContentView()
.environmentObject(self.authViewModel)
}
}
}
and consumed as
@EnvironmentObject private var authViewModel: AuthViewModel<AuthRepositoryImpl>
But with this code, the whole concept of having a generic implementation for the auth repository is useless, because changing the AuthRepostory will need to search and replace AuthViewModel<AuthRepositoryImpl> across all the app.
I've experienced this directly creating a MockAuthImpl to use with #Preview, and the preview crashed because it defines AuthViewModel(repository: MockAuthImpl()) but the view expects AuthViewModel.
There is a better way to do that?
I have a Form with a custom TextField which uses a custom Text().
When I use .alignmentGuide on the Text() it seems the origin reference point varies with the length of, but not by the length of, the TextField label String. This is a problem when in a Form. My workaround has been to not use a TextField label but enclose the each TextField in a LabeledContent and then I can set the width of the label and align off of that.
How does Form cause TextField to set it's width and why if using .alignmentGuide on Text() does the TextField label length even matter?
Topic:
UI Frameworks
SubTopic:
SwiftUI
Hi,
I am trying to create a local backup + restore when using SwiftUI and CoreData but I am facing errors left and right. the latest error I am stuck on is:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'executeFetchRequest:error: A fetch request must have an entity.'
Here is what am trying to do:
Creating a backup (already solved using NSPersistentStoreCoordinator.migratePersistentStore(_:to:options:type:))
Create a new NSPersistentContainer and call its NSPersistentContainer.loadPersistentStores(completionHandler:) (already solved, load is successful)
Update the .environment(.managedObjectContext, viewModel.context) so that SwiftUI uses the new context. (HERE is where the error appears)
Any help would be appreciated.
Here is some sample code of SwiftUI part of the main view:
class ViewModel: ObservableObject {
@Published var context: NSManagedObjectContext
}
@main
struct MyApp: App {
@StateObject var viewModel: ViewModel
var body: some Scene {
WindowGroup {
ContentView()
.environment(\.managedObjectContext, viewModel.context)
}
}
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
The SwiftUI Playground code below demonstrates that a .jpeg image can be read and written to the iOS file system. While, a.png image can only be read; the writing request appears to be ignored. Can anyone please tell me how to code to save a .png image using SwiftUI to the iOS file system.
Code:
import SwiftUI
import UniformTypeIdentifiers
/*
(Copied from Playground 'Help' menu popup.)
UIImage Summary
An object that manages image data in your app.
You use image objects to represent image data of all kinds, and the UIImage class is capable of managing data for all image formats supported by the underlying platform. Image objects are immutable, so you always create them from existing image data, such as an image file on disk or programmatically created image data. An image object may contain a single image or a sequence of images for use in an animation.
You can use image objects in several different ways:
Assign an image to a UIImageView object to display the image in your interface.
Use an image to customize system controls such as buttons, sliders, and segmented controls.
Draw an image directly into a view or other graphics context.
Pass an image to other APIs that might require image data.
Although image objects support all platform-native image formats, it’s recommended that you use PNG or JPEG files for most images in your app. Image objects are optimized for reading and displaying both formats, and those formats offer better performance than most other image formats. Because the PNG format is lossless, it’s especially recommended for the images you use in your app’s interface.
Declaration
class UIImage : NSObject
UIImage Class Reference
*/
@main
struct MyApp: App {
var body: some Scene {
WindowGroup {
ContentView()
}
}
}
struct ImageFileDoc: FileDocument {
static var readableContentTypes = [UTType.jpeg, UTType.png]
static var writableContentTypes = [UTType.jpeg, UTType.png]
var someUIImage: UIImage = UIImage()
init(initialImage: UIImage = UIImage()) {
self.someUIImage = initialImage
}
init(configuration: ReadConfiguration) throws {
guard let data = configuration.file.regularFileContents,
let some = UIImage(data: data)
else {
throw CocoaError(.fileReadCorruptFile)
}
self.someUIImage = some
}
func fileWrapper(configuration: WriteConfiguration) throws -> FileWrapper {
switch configuration.contentType {
case UTType.png:
if let data = self.someUIImage.pngData() {
return .init(regularFileWithContents: data)
}
case UTType.jpeg:
if let data = self.someUIImage.jpegData(compressionQuality: 1.0) {
return .init(regularFileWithContents: data)
}
default:
break
}
throw CocoaError(.fileWriteUnknown)
}
}
struct ContentView: View {
@State private var showingExporterPNG = false
@State private var showingExporterJPG = false
@State private var showingImporter = false
@State var message = "Hello, World!"
@State var document: ImageFileDoc = ImageFileDoc()
@State var documentExtension = ""
var body: some View {
VStack {
Image(systemName: "globe")
.imageScale(.large)
.foregroundColor(.accentColor)
Text(message)
Button("export") {
if documentExtension == "png" {
message += ", showingExporterPNG is true."
showingExporterPNG = true
}
if documentExtension == "jpeg" {
message += ", showingExporterJPG is true."
showingExporterJPG = true
}
}
.padding(20)
.border(.white, width: 2.0)
.disabled(documentExtension == "")
Button("import") {
showingImporter = true
}
.padding(20)
.border(.white, width: 2.0)
Image(uiImage: document.someUIImage)
.resizable()
.padding()
.frame(width: 300, height: 300)
}
// exporter .png
.fileExporter(isPresented: $showingExporterPNG, document: document, contentType: UTType.png) { result in
switch result {
case .success(let url):
message += ", .\(documentExtension) Saved to \(url.lastPathComponent)"
case .failure(let error):
message += ", Some error saving file: " + error.localizedDescription
}
}
// exporter .jpeg
.fileExporter(isPresented: $showingExporterJPG, document: document, contentType: UTType.jpeg) { result in
switch result {
case .success(let url):
message += ", .\(documentExtension) Saved to \(url.lastPathComponent)"
case .failure(let error):
message += ", Some error saving file: " + error.localizedDescription
}
}
// importer
.fileImporter(isPresented: $showingImporter, allowedContentTypes: [.png, .jpeg]) { result in
switch result {
case .failure(let error):
message += ", Some error reading file: " + error.localizedDescription
case .success(let url):
let gotAccess = url.startAccessingSecurityScopedResource()
if !gotAccess {
message += ", Unable to Access \(url.lastPathComponent)"
return
}
documentExtension = url.pathExtension
guard let fileContents = try? Data(contentsOf: url)
else {
message += ",\n\nUnable to read file: \(url.lastPathComponent)\n\n"
url.stopAccessingSecurityScopedResource()
return
}
url.stopAccessingSecurityScopedResource()
message += ", Read file: \(url.lastPathComponent)"
message += ", path extension is '\(documentExtension)'."
if let uiImage = UIImage(data: fileContents) {
self.document.someUIImage = uiImage
}else{
message += ", File Content is not an Image."
}
}
}
}
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
Tags:
Files and Storage
Developer Tools
iPad
Swift Playground
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.
We use @Query macro in our App. After we got macOS 15.3 update, our App crashes at @Query line.
SwiftData/Schema.swift:305: Fatal error: KeyPath \Item.<computed 0x0000000100599e54 (Vec3D)>.x points to a field (<computed 0x0000000100599e54 (Vec3D)>) that is unknown to Item and cannot be used.
This problem occurs only when the build configuration is "Release", and only when I use @Query macro with sort: parameter. The App still works fine on macOS 14.7.3.
This issue seems similar to what has already been reported in the forum. It looks like a regression on iOS 18.3.
https://developer.apple.com/forums/thread/773308
Item.swift
import Foundation
import SwiftData
public struct Vec3D {
let x,y,z: Int
}
extension Vec3D: Codable { }
@Model
final class Item {
var timestamp: Date
var vec: Vec3D
init(timestamp: Date) {
self.timestamp = timestamp
self.vec = Vec3D(x: 0, y: 0, z: 0)
}
}
ContentView.Swift
import SwiftUI
import SwiftData
struct ContentView: View {
@Environment(\.modelContext)
private var modelContext
@Query(sort: \Item.vec.x) // Crash
private var items: [Item]
var body: some View {
NavigationSplitView {
List {
ForEach(items) { item in
NavigationLink {
Text("Item at \(item.timestamp, format: Date.FormatStyle(date: .numeric, time: .standard))")
} label: {
Text(item.timestamp, format: Date.FormatStyle(date: .numeric, time: .standard))
}
}
.onDelete(perform: deleteItems)
}
.navigationSplitViewColumnWidth(min: 180, ideal: 200)
.toolbar {
ToolbarItem {
Button(action: addItem) {
Label("Add Item", systemImage: "plus")
}
}
}
} detail: {
Text("Select an item")
}
}
private func addItem() {
withAnimation {
let newItem = Item(timestamp: Date())
modelContext.insert(newItem)
}
}
private func deleteItems(offsets: IndexSet) {
withAnimation {
for index in offsets {
modelContext.delete(items[index])
}
}
}
}
App update in which there were no changes regarding the widget. Just after it updated, the widget turns black in some cases. It also appears black in the widget gallery. Removing and adding it again did not work in this case, only after an iOS restart it works fine again
This is the log
2025-03-20 02:14:05.961611 +0800 Content load failed: unable to find or unarchive file for key: [com.aa.bb::com.aa.bb.widget:cc_widget:systemMedium::360.00/169.00/23.00:(null)~(null)] on no host. The session may still produce one shortly. Error: Using url file:///private/var/mobile/Containers/Data/PluginKitPlugin/51C5E4F2-6F1F-4466-A428-73C73B9CC887/SystemData/com.apple.chrono/placeholders/cc_widget/systemMedium----360.00w--169.00h--23.00r--1f--0.00t-0.00l-0.00b0.00t.chrono-timeline ... Error Domain=NSCocoaErrorDomain Code=4 "file“systemMedium----360.00w--169.00h--23.00r--1f--0.00t-0.00l-0.00b0.00t.chrono-timeline”not exist。" UserInfo={NSFilePath=/private/var/mobile/Containers/Data/PluginKitPlugin/51C5E4F2-6F1F-4466-A428-73C73B9CC887/SystemData/com.apple.chrono/placeholders/cc_widget/systemMedium----360.00w--169.00h--23.00r--1f--0.00t-0.00l-0.00b0.00t.chrono-timeline, NSUnderlyingError=0xa693d3a80 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}}
Hi, folks.
I know that in the new observation, class property changes can be automatically notified to SwiftUI, which is very convenient. But in the new observation framework, how to monitor the property changes of different model classes? For example, class1 has an instance of class2, and I need to notify class1 to perform some actions and make some changes when some properties of class2 are changed. How to do it in observation? In the past, I could use combined methods to write the second part of the code for monitoring. However, using the combined framework in observation is a bit confusing. I know this method can be withObservationTracking(_:onChange:) but it needs to be registered continuously.
If Observation is not possible, do I need to change my design structure?
Thanks.
// Observation
@Observable class Sample1 {
var count: Int = 0
var name = "Sample1"
}
@Observable class Sample2 {
var count: Int = 0
var name = "Sample2"
var sample1: Sample1?
init (sample1 : Sample1) {
self.sample1 = sample1
}
func render() {
withObservationTracking {
print("Accessing Sample1.count: \(sample1?.count ?? 0)")
} onChange: { [weak self] in
print("Sample1.count changed! Re-rendering Sample2.")
self?.handleSample1CountChange()
}
}
private func handleSample1CountChange() {
print("Handling count change in Sample2...")
self.count = sample1?.count ?? 0
}
}
// ObservableObject
class Sample1: ObservableObject {
@Published var count: Int = 0
var name = "Sample1"
}
class Sample2: ObservableObject {
@Published var count: Int = 0
var name = "Sample1"
var sample1: Sample1?
private var cancellables = Set<AnyCancellable>()
init (sample1 : Sample1) {
self.sample1 = sample1
setupSubscribers()
}
private func setupSubscribers() {
sample1?.$count
.receive(on: DispatchQueue.main)
.sink { [weak self] count in
guard let self = self else { return }
// Update key theory data
self.count = count
self.doSomeThing()
}
.store(in: &cancellables)
}
private func doSomeThing() {
print("Count changes, need do some thing")
}
}
I have a UITextField in my application, and I want to detect all the keys uniquely to perform all relevant task. However, there is some problem in cleanly identifying some of the keys.
I m not able to identify the backspace key press in the textField(_:shouldChangeCharactersIn:replacementString:) method.
Also I don't know how to detect the Caps Lock key.
I am intending to so this because I want to perform some custom handling for some keys. Can someone help me with what is the way of detecting it under the recommendation from apple. Thanks in advance.
Note: checking for replacementString parameter in shouldChangeCharactersIn method for empty does not help for backspace detection as it overlaps with other cases.
Hello everyone. Can someone please help me. I am completely lost and have exhausted everything I know to do. I have a Navigation View with a list inside of it. For some reason, there is a gray background behind my list. I'm assuming this is due to some type of padding with the Navigation View but I can't seem to be able to adjust the background or change it to clear. I have attached an image of what I'm mentioning to hopefully better explain. You will see the green bar at the top. that is the background of another view behind this view. I want to either fully cover the screen with the gray background or remove it completely.
Topic:
UI Frameworks
SubTopic:
SwiftUI
Hi everyone,
frome time to time I see crash which Im not able to debug, because there is no line of my code where crash occured.
This is a crash log what Im getting from time to time of some users. In my device I never get this kind of crash.
0 libswiftCore.dylib 0x1172c _assertionFailure(_:_:flags:) + 208
1 libswiftCore.dylib 0x198624 KEY_TYPE_OF_DICTIONARY_VIOLATES_HASHABLE_REQUIREMENTS(_:) + 2980
2 libswiftCore.dylib 0xdb6c8 specialized _NativeDictionary.uncheckedRemove(at:isUnique:) + 534
3 libswiftCore.dylib 0xb250c Dictionary._Variant.setValue(_:forKey:) + 204
4 libswiftCore.dylib 0x5a620 Dictionary.subscript.setter + 520
5 SwiftUICore 0xf62ec ForEachState.item(at:offset:) + 4340
6 SwiftUICore 0xf5054 ForEachState.forEachItem(from:style:do:) + 1796
7 SwiftUICore 0x2272f8 ForEachState.traitKeys.getter + 84
8 SwiftUICore 0x227298 ForEachList.traitKeys.getter + 24
9 SwiftUICore 0x227008 protocol witness for ViewList.traitKeys.getter in conformance SubgraphList + 76
10 SwiftUICore 0x227008 protocol witness for ViewList.traitKeys.getter in conformance SubgraphList + 76
11 SwiftUICore 0x227008 protocol witness for ViewList.traitKeys.getter in conformance SubgraphList + 76
12 SwiftUICore 0x227008 protocol witness for ViewList.traitKeys.getter in conformance SubgraphList + 76
13 SwiftUICore 0x2271fc DynamicViewList.WrappedList.traitKeys.getter + 88
27 SwiftUICore 0x226d18 specialized static SectionAccumulator.processUnsectionedContent(list:contentSubgraph:) + 84
28 SwiftUI 0x26afe0 ListSectionInfo.init(list:listAttribute:contentSubgraph:) + 132
29 SwiftUI 0x269bb0 UpdateCollectionViewListCoordinator.updateValue() + 1528
30 SwiftUI 0x785d4 partial apply for implicit closure #1 in closure #1 in closure #1 in Attribute.init<A>(_:) + 32
31 AttributeGraph 0xccac AG::Graph::UpdateStack::update() + 540
32 AttributeGraph 0xc870 AG::Graph::update_attribute(AG::data::ptr<AG::Node>, unsigned int) + 424
33 AttributeGraph 0xc444 AG::Subgraph::update(unsigned int) + 848
34 SwiftUICore 0x805a8 GraphHost.flushTransactions() + 860
35 SwiftUI 0x1ac84 closure #1 in _UIHostingView._renderForTest(interval:) + 24
36 SwiftUICore 0x7ffa8 partial apply for closure #1 in ViewGraphDelegate.updateGraph<A>(body:) + 28
37 SwiftUICore 0x7fd6c ViewRendererHost.updateViewGraph<A>(body:) + 120
38 SwiftUICore 0x7fce8 ViewGraphDelegate.updateGraph<A>(body:) + 84
39 SwiftUI 0x3e688 closure #1 in closure #1 in closure #1 in _UIHostingView.beginTransaction() + 172
40 SwiftUI 0x3e5d4 partial apply for closure #1 in closure #1 in closure #1 in _UIHostingView.beginTransaction() + 24
41 SwiftUICore 0x79720 closure #1 in static Update.ensure<A>(_:) + 56
42 SwiftUICore 0x796a4 static Update.ensure<A>(_:) + 100
43 SwiftUI 0x9c808 partial apply for closure #1 in closure #1 in _UIHostingView.beginTransaction() + 80
44 SwiftUICore 0x7f5e0 thunk for @callee_guaranteed () -> () + 28
45 SwiftUICore 0x6161c specialized closure #1 in static NSRunLoop.addObserver(_:) + 144
46 CoreFoundation 0x218a4 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 36
47 CoreFoundation 0x213f8 __CFRunLoopDoObservers + 552
48 CoreFoundation 0x75da8 __CFRunLoopRun + 948
49 CoreFoundation 0xc8284 CFRunLoopRunSpecific + 588
50 GraphicsServices 0x14c0 GSEventRunModal + 164
51 UIKitCore 0x3ee674 -[UIApplication _run] + 816
52 UIKitCore 0x14e88 UIApplicationMain + 340
53 SwiftUI 0x291ef8 closure #1 in KitRendererCommon(_:) + 168
54 SwiftUI 0x291e28 runApp<A>(_:) + 100
55 SwiftUI 0x291d0c static App.main() + 180
56 DholRainbow 0x3019e8 main + 4339145192 (DholRainbowApp.swift:4339145192)
57 ??? 0x1b0bf5de8 (Missing)
From Crashlytics I know at least human readable format of this error
Fatal error: Duplicate keys of type 'Contact' were found in a Dictionary. This usually means either that the type violates Hashable's requirements, or that members of such a dictionary were mutated after insertion.
I 've checked all my parts of code where Im using dictionary. This is a function which creating that particulary dictionary.
private func logsByDate() {
let groupedByDate = Dictionary(grouping: logs.filter { ($0.remoteParty as? Contact != nil) } ) {
$0.date.removeTimeStamp ?? .distantPast }.mapValues {
$0.compactMap { $0 }
}
var dayLogs = [DayLog]()
for date in groupedByDate {
var contacts = [CallLogContact]()
for log in logs.filter({ $0.date.removeTimeStamp ?? .distantPast == date.key }) {
if let contact = log.remoteParty as? Contact {
if contacts.firstIndex(where: {$0.contact == contact }) == nil {
let contactDayLogs = logs.filter({ $0.remoteParty as? Contact == contact && $0.date.removeTimeStamp == date.key})
contacts.append(
CallLogContact(
contact: contact,
logs: contactDayLogs,
lastCallLogDate: contactDayLogs.sorted(by: {$0.date > $1.date}).first?.date ?? .distantPast
)
)
}
}
}
dayLogs.append(DayLog(date: date.key, contact: contacts))
}
DispatchQueue.main.async {
self.groupedCallLogs = dayLogs
}
}
This function is called from 3 others functions based on notification from the server in case of new call log, fetched call logs and removed call logs.
Hi,
I have noticed a major change to a SwiftUI API behavior in iOS18.4beta1 which breaks my app's functionality, and I've started hearing from users running the new beta that the app doesn't correctly work for them anymore.
The problem is with views that contain a List with multiple-selection, and the contextMenu API applied with the ‘primaryAction’ callback that is triggered when the user taps on a row. Previously, if the user tapped on a row, this callback was triggered with the 'selectedItems' showing the tapped item. With iOS18.4beta, the same callback is triggered with ‘selectedItems’ being empty.
I have the code to demonstrate the problem:
struct ListSelectionTestView: View {
@State private var items: [TimedItem] = [
TimedItem(number: 1, timestamp: "2024-11-20 10:00"),
TimedItem(number: 2, timestamp: "2024-11-20 11:00"),
TimedItem(number: 3, timestamp: "2024-11-20 12:00")
]
@State var selectedItems = Set<TimedItem.ID>()
var body: some View {
NavigationStack {
List(selection: $selectedItems) {
ForEach(items) { item in
Text("Item \(item.number) - \(item.timestamp)")
}
}
.contextMenu(forSelectionType: TimedItem.ID.self, menu: {_ in
Button(action: {
print("button called - count = \(selectedItems.count)")
}) {
Label("Add Item", systemImage: "square.and.pencil")
}
}, primaryAction: {_ in
print("primaryAction called - count = \(selectedItems.count)")
})
}
}
}
struct TimedItem: Identifiable {
let id = UUID()
let number: Int
let timestamp: String
}
#Preview {
ListSelectionTestView()
}
Running the same code on iOS18.2, and tapping on a row will print this to the console:
primaryAction called - count = 1
Running the same code on iOS18.4 beta1, and tapping on a row will print this to the console:
primaryAction called - count = 0
So users who were previously selecting an item from the row, and then seeing expected behavior with the selected item, will now suddenly tap on a row and see nothing. My app's functionality relies on the user selecting an item from a list to see another detailed view with the selected item's contents, and it doesn't work anymore.
This is a major regression issue. Please confirm and let me know. I have filed a feedback: FB16593120
Starting from Sequoia release 15.2 apps crash with following call stack, when adding static text controls. First call to [NSTextField setStringValue] causes following crash
0 libobjc.A.dylib 0x19f2f5820 objc_msgSend + 32
1 AppKit 0x1a3355460 -[NSCell _objectValue:forString:errorDescription:] + 144
2 AppKit 0x1a3355348 -[NSCell setStringValue:] + 48
3 AppKit 0x1a33af9fc -[NSControl setStringValue:] + 104
4 AppKit 0x1a3d1f190 -[NSTextField setStringValue:] + 52
It happens on specific MacBook Pro models(16 in MacBook Pro).
Crash analysis found that isa pointer of the object was corrupted for the object NSCell. Enabled Zombies in debugging, not found any issue. Also tried address sanitizer. Since the issue started with a recent release of macOS, any changes in the Appkit in the recent releases trigger the crash? Any help/suggestions would be appreciated.
Topic:
UI Frameworks
SubTopic:
AppKit
The pitch slider is not supported on tvOS yet it displays when using the Map() view. Does anyone know how to hide it? It's really getting in the way of my UI.
Topic:
UI Frameworks
SubTopic:
SwiftUI