On testing my app with tvOS 18, I have noticed the Siri Remote back button no longer provides system-provided behavior when interacting with tab bar controller pages. Instead of moving focus back to the tab bar when pressed, the back button will close the app, as if the Home button was pressed. This occurs both on device and in the Simulator.
Create tvOS project with a tab bar controller.
Create pages/tabs which contain focusable items (ie. buttons)
Scroll down to any focusable item (ie. a button or UICollectionView cell)
Hit the Siri Remote back button. See expect behavior below:
Expected behavior: System-provided behavior should move focus back to the tab bar at the top of the screen.
Actual results: App is closed and user is taken back to the Home Screen.
Has anyone else noticed this behavior?
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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When scrolling a basic NSScrollView there seems to be a sudden jump after each flick. Scrolling does not appear smooth and is disorientating.
A scroll jump seems to happen directly after letting go of a scroll flick using a trackpad/mouse. Right at that moment the scroll turns into a momentum scroll, slowly decreasing the speed. But the first frame after the gesture the content jumps forward, more than what is expected.
Observations:
Counterintuitively, scrolling appears to be smoother when disabling NSScrollView.isCompatibleWithResponsiveScrolling. If disabled using a custom NSScrollView subclass there is no large jump anymore.
Scrolling also appears to be smoother using a SwiftUI ScrollView. I assume that has the same behaviour as a disabled isCompatibleWithResponsiveScrolling
Ironically a WKWebView scrolls much smoother. No sudden jump is observable. It also seems to scroll with faster acceleration, but the individual frames do appear smoother. Why is this better than a native NSScrollView?
Elastic scrolling at the bounds of the scroll view also appears much smoother for WKWebViews. When pulling to refresh there is a jump for NSScrollView/SwiftUI, but not for WKWebView.
When using an NSScrollView with isCompatibleWithResponsiveScrolling disabled, scrolling appears just as smooth as WKWebView on macOS 13 Ventura and below. On macOS 14 Sonoma scrolling behaviour is suddenly different.
Please see a sample project with 4 different scroll views side by side:
https://github.com/floorish/ScrollTest
Screen recordings show the sudden jumps when scrolling and when elastic scrolling.
Tested on Intel & Arm Macs, macOS 11 Big Sur through 15 Sequoia, built with Xcode 16.
Should isCompatibleWithResponsiveScrolling be disabled on Sonoma+? Are there any drawbacks?
There is also no overdraw anymore since Monterey, as described in https://developer.apple.com/library/archive/releasenotes/AppKit/RN-AppKitOlderNotes/#10_9Scrolling
Even with responsive scrolling disabled, why is WKWebView scrolling much smoother than NSScrollView?
I've encountered a potential bug where a TextField connected to an optional value (not a string) works as expected when bound to a @State property, but won't update a @Binding property.
Here is some example code
import SwiftUI
struct ContentView: View
{
@Binding var boundValue: Double?
@State private var stateValue: Double? = 55
var body: some View
{
TextField("Bound value", value: $boundValue, format: .number)
Text("\(boundValue ?? .nan)")
TextField("State value", value: $stateValue, format: .number)
Text("\(stateValue ?? .nan)")
}
}
#Preview
{
ContentView(boundValue: .constant(42.00))
}
It's as though the optional value stored externally is preventing the value updating. Can anyone confirm whether this is intentional, or a bug?
This is in Xcode 26b6, on macOS Tahoe 26b8, but from this query it looks like the problem has existed for years.
Topic:
UI Frameworks
SubTopic:
SwiftUI
In one of my apps, i am using .glassEffect(_:In) to add glass effect on various elements. The app always crushes when a UI element with glassEffect(_in:) modifier is being rendered. This only happens on device running iOS 26 public beta. I know this for certain because I connected the particular device to xcode and run the app on the device. When i comment out the glassEffect modifier, app doesn't crush.
Is it possible to check particular realeases with #available? If not, how should something like this be handled. Also how do i handle such os level erros without the app crushing. Thanks.
My app is a SwiftUI document based app using DocumentGroupLaunchScene. In iOS(iPadOS) 18.4, when it launches, it has duplicate toolbar items, and when I close the current document and open other documents, it adds more duplicates. It also shows a wrong document name, which shows the first opened document name. This issue can be reproduced in the sample code (Building a document-based app with SwiftUI).
I have submitted Feedback (FB17025216), but not sure if this is a known bug or if I'm missing anything.
I have something that looks like:
NavigationStack {
List(self.items, id: \.self, selection: self.$selectedItems) { item in
NavigationLink {
ItemView(item: item)
.environment(\.managedObjectContext, self.viewContext)
} label: {
LabelWithMenuView(object: item) { ptr in
self.labelHandler(item: item, newName: ptr)
}
}
}
if self.editMode?.wrappedValue == .active {
editButtons
} else {
TextField("Add Item", text: self.$newItem)
.onSubmit {
self.addItem()
self.newItem = ""
}
.padding()
}
}
#if os(iOS)
.toolbar {
EditButton()
}
.onChange(of: self.editMode?.wrappedValue) { old, new in
print("editMode \(old) -> \(new)")
}
#endif
With that layout, the edit button doesn't show up at all; if I put it as part of the List, it does show up, but the first click doesn't do anything; after that, it works, but the onChange handler doesn't show it getting changed, and the editButtons don't go away.
Hi,
I have a NavigationSplitView with a view in the detail section:
NavigationSplitView {
ZStack {
Color.black.ignoresSafeArea()
gradientBlack2Blue.opacity(0.25)
.ignoresSafeArea()
GeometryReader { p in
VStack {
List {
SidebarViewCell(id: "1",
text: "Steuersätze" ,
type: .TAX_MASTERDATA ,
selectedMasterdataType: $selectedMasterdataType)
}.listRowSpacing(size.height * 1.25 / 100 )
.scrollContentBackground(.hidden)
.toolbar(.hidden, for: .navigationBar)
.frame(width: p.size.width * 98 / 100 , height: p.size.height,
alignment: .topLeading).
}alignment: .topLeading)
}
}
}
detail: {
MasterdataDetailView().ignoresSafeArea()
}
}.navigationSplitViewStyle(.balanced)
When I place a Button-Control in the MasterdataDetailView it cannot be clicked because it is in the safe area. How can I make it clickable?
Best Regards,
Frank
I have a UIKit app with a custom navigation controller. I want my view title to go up into the navigation bar when the user scrolls down the screen. It looks like UIScrollEdgeElementContainerInteraction should do what I want, but I am having trouble using it.
Below is a sample, where a header view represents a title. I added the interaction to the header view, but it seems to have no effect. Am I missing a step? Perhaps I misunderstand what this is supposed to do, or perhaps I do not understand the preconditions to make this work.
I am hoping someone can tell me what I am doing wrong, or point me to some working sample code.
Thank you.
John
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var headerView: UIVisualEffectView!
var tableView: UITableView!
var interaction: UIScrollEdgeElementContainerInteraction!
override func viewDidLoad() {
super.viewDidLoad()
self.tableView = UITableView()
self.tableView.translatesAutoresizingMaskIntoConstraints = false
self.tableView.topEdgeEffect.style = .soft
self.tableView.delegate = self
self.tableView.dataSource = self
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
self.view.addSubview(self.tableView)
self.view.addConstraints([
self.tableView.topAnchor.constraint(equalTo: self.view.topAnchor),
self.tableView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
self.tableView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
self.tableView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor),
])
self.headerView = UIVisualEffectView(effect: UIGlassEffect(style: .regular))
self.headerView.translatesAutoresizingMaskIntoConstraints = false
self.headerView.backgroundColor = .green
self.view.addSubview(self.headerView)
self.view.addConstraints([
self.headerView.topAnchor.constraint(equalTo: self.view.topAnchor),
self.headerView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
self.headerView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
self.headerView.heightAnchor.constraint(equalToConstant: 100.0),
])
let label = UILabel()
label.translatesAutoresizingMaskIntoConstraints = false
label.text = "my text"
self.headerView.contentView.addSubview(label)
self.headerView.contentView.addConstraints([
label.centerXAnchor.constraint(equalTo: self.headerView.contentView.centerXAnchor),
label.centerYAnchor.constraint(equalTo: self.headerView.contentView.centerYAnchor),
])
self.interaction = UIScrollEdgeElementContainerInteraction()
self.interaction.scrollView = self.tableView
self.interaction.edge = .top
self.headerView.addInteraction(self.interaction)
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 100
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = "row \(indexPath.row + 1)"
return cell
}
}
Hi everyone,
I'm currently facing an issue with AVAudioPlayer in my SwiftUI project. Despite ensuring that the sound file "buttonsound.mp3" is properly added to the project's resources (I dragged and dropped it into Xcode), the application is still unable to locate the file when attempting to play it.
Here's the simplified version of the code I'm using:
import SwiftUI
import AVFoundation
struct ContentView: View {
var body: some View {
VStack {
Button("Play sound") {
playSound(named: "buttonsound", ofType: "mp3")
}
}
}
}
func playSound(named name: String, ofType type: String) {
guard let soundURL = Bundle.main.url(forResource: name, withExtension: type) else {
print("Sound file not found")
return
}
do {
let audioPlayer = try AVAudioPlayer(contentsOf: soundURL)
audioPlayer.prepareToPlay()
audioPlayer.play()
} catch let error {
print("Error playing sound: \(error.localizedDescription)")
}
}
A few days ago scanning NFC tags or QR codes for AppClips with advanced experiences started showing the error "The operation couldn't be completed. (CPSErrorDomain error 2.)" in the AppClip sheet as seen here:
We are providing AppClips to our customers and they trust AppClips to always work, since it is a big part of their business.
Since this is happening at our customers phones and on the phones of their customers, I don't have a sysdiagnose.
I already created a feedback entry about this FB16601674.
We checked everything, our AASA file, the Appstore Experiences.
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?
Hello!
My question is about 1) if we can use any and or all accessibility features within a sandboxed app and 2) what steps we need to take to do so.
Using accessibility permissions, my app was working fine in Xcode. It used NSEvent.addGlobalMonitorForEvents and localMoniter, along with CGEvent.tapCreate. However, after downloading the same app from the App Store, the code was not working. I believe this was due to differences in how permissions for accessibility are managed in Xcode compared to production.
Is it possible for my app to get access to all accessibility features, while being distributed on the App Store though? Do I need to add / request any special entitlements like com.apple.security.accessibility?
Thanks so much for the help. I have done a lot of research on this online but found some conflicting information, so wanted to post here for a clear answer.
Please has anyone found a workaround for duplicate back buttons appearing on the toolbar of a ContentView launched from a DocumentGroup?
The problem occurs with Xcode 14.0 running a basic DocumentGroup App on iOS 16.0.
To reproduce, simply build a new project using the "Document App" template. Build and run in the iOS/iPadOS simulator or on an iOS/iPadOS device.
Two back buttons appear. Only one functions. I've not found a way to eliminate the dud.
This problem has occurred throughout the Xcode 14.0 beta program.
On WWDC25 session "Meet Liquid Glass", two Liquid Glass variants are mentioned: "regular" and "clear". "Regular" seems to be the default setting for UIGlassEffect, but I was not able to find an option for clear.
Is there a native element that uses clear? Is it coming to later betas for iOS 26?
I have a custom document-based iOS app that also runs on macOS. After implementing -activityItemsConfiguration to enable sharing from the context menu, I found that the app crashes on macOS when selecting Share… from the context menu and then selecting Save (i.e. Save to Files under iOS). This problem does not occur on iOS, which behaves correctly.
- (id<UIActivityItemsConfigurationReading>)activityItemsConfiguration {
NSItemProvider * provider = [[NSItemProvider alloc] initWithContentsOfURL:self.document.presentedItemURL];
UIActivityItemsConfiguration * configuration = [UIActivityItemsConfiguration activityItemsConfigurationWithItemProviders:@[ provider ]];
// XXX crashes with com.apple.share.System.SaveToFiles
return configuration;
}
Additionally, I found that to even reach this crash, the workaround implemented in the NSItemProvider (FBxxx) category of the sample project is needed. Without this, the app will crash much earlier, due to SHKItemIsPDF() erroneously invoking -pathExtension on an NSItemProvider. This appears to be a second bug in Apple’s private ShareKit framework.
#import <UniformTypeIdentifiers/UniformTypeIdentifiers.h>
@implementation NSItemProvider (FBxxx)
// XXX SHKItemIsPDF() invokes -pathExtension on an NSItemProvider (when running under macOS, anyway) -> crash
- (NSString *)pathExtension {
return self.registeredContentTypes.firstObject.preferredFilenameExtension;
}
@end
Again, this all works fine on iOS (17.5) but crashes when the exact same app build is running on macOS (14.5).
I believe these bugs are Apple's. Any idea how to avoid the crash? Is there a way to disable the "Save to Files" option in the sharing popup?
I filed FB13819800 with a sample project that demonstrates the crash on macOS. I was going to file a TSI to get this resolved, but I see that DTS is not responding to tech support incidents until after WWDC.
Topic:
UI Frameworks
SubTopic:
UIKit
Using desaturated mode on an image in a widget will break any links or buttons that use the image as their 'label'.
Using the following will just open the app as if there was no link at all - therefore just using the fallback userActivity handler, or any .widgetURL() urls provided.
Link(destination: URL(string: "bug://never-works")!) {
Image("puppy")
.widgetAccentedRenderingMode(.desaturated)
}
The same goes for buttons:
Button(intent: MyDemoIntent()) {
Image("puppy")
.widgetAccentedRenderingMode(.desaturated)
}
I've tried hacky solutions like putting the link behind the image using a ZStack, and disabling hit testing on the image, but they don't work. Anything else to try?
Logged as Feedback #15152620.
Hello. There seems to be a bug specifically in the iOS 18.2 (both Beta 1 and 2) and not seen in the previous versions.
The bug is: when LazyVGrid is nested inside NavigationStack and some elements of the LazyVGrid have animations, navigating into any nested view and then going back to the initial view with the LazyVGrid causes all animations to stop working.
Here is the example code inline:
struct ContentView: View {
@State private var count: Int = 0
var body: some View {
NavigationStack {
LazyVGrid(
columns: Array(
repeating: GridItem(spacing: 0),
count: 1
),
alignment: .center,
spacing: 0
) {
VStack {
Text(String(count))
.font(.system(size: 100, weight: .black))
.contentTransition(.numericText())
.animation(.bouncy(duration: 1), value: count)
Button("Increment") {
count += 1
}
NavigationLink(destination: { Text("Test") }, label: { Text("Navigate") })
}
}
}
.padding()
}
}
Once you run the application on iOS 18.2 Beta (I've tried on a real device only), the steps to reproduce are:
Tap on the "Increment button"
You should see the number change with an animation
Tap on the "Navigate" button
Tap "Back" to go to the initial screen
Tap "Increment" again
The number changes without an animation
I can confirm that this affects not only .contentTransition() animation but any animation within the LazyVGrid, I've tested this in my real app.
Let me know if I can provide more details. Thank you!
I've discovered an issue with using iOS 16's Transferable drag-and-drop APIs for SwiftUI. The dropDestination modifier does not work when applied to a subview of a List.
This code below will not work, unless you replace the List with a VStack or any other container (which, of course, removes all list-specific rendering).
The draggable modifier will still work and the item will drag, but the dropDestination view won't react to it and neither closure will be called.
struct MyView: View {
var body: some View {
List {
Section {
Text("drag this title")
.font(.largeTitle)
.draggable("a title")
}
Section {
Color.pink
.frame(width: 400, height: 400)
.dropDestination(for: String.self) { receivedTitles, location in
true
} isTargeted: {
print($0)
}
}
}
}
}
Has anyone encountered this bug and perhaps found a workaround?
I have a SwiftUI Mac Catalyst app. I create a toolbar like this
NavigationSplitView(columnVisibility: $sceneModel.columnVisibility, preferredCompactColumn: $preferredColumn) {
sidebarView()
} detail: {
contentView()
.toolbar {
ToolbarItemGroup(placement: .topBarTrailing) {
HStack {
Button {
sceneModel.onMaps(sender: self)
} label: {
Image(systemName: "map")
.font(.title2)
}
Button {
sceneModel.onSearch(sender: self)
} label: {
Image(systemName: "magnifyingglass")
.font(.title2)
}
...
}
}
}
}
When my Mac Appearance is set to dark mode and the content under the toolbar is dark the toolbar looks good like this.
But then if I have light content under the toolbar, the glass effect changes to light, but the tint on the icons stays white instead of changing to black and it is hard to see the icon. It looks like this.
When I set the Appearance on my Mac to light, then the toolbar works just fine on both dark and light colored backgrounds.
Does anyone know how I can fix this when the appearance is Dark?
I have a SwiftUI app. It fetches records through CoreData. And I want to show some records on a widget. I understand that I need to use AppGroup to share data between an app and its associated widget.
import Foundation
import CoreData
import CloudKit
class DataManager {
static let instance = DataManager()
let container: NSPersistentContainer
let context: NSManagedObjectContext
init() {
container = NSPersistentCloudKitContainer(name: "DataMama")
container.persistentStoreDescriptions = [NSPersistentStoreDescription(url: FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: group identifier)!.appendingPathComponent("Trash.sqlite"))]
container.loadPersistentStores(completionHandler: { (description, error) in
if let error = error as NSError? {
print("Unresolved error \(error), \(error.userInfo)")
}
})
context = container.viewContext
context.automaticallyMergesChangesFromParent = true
context.mergePolicy = NSMergePolicy(merge: .mergeByPropertyObjectTrumpMergePolicyType)
}
func save() {
do {
try container.viewContext.save()
print("Saved successfully")
} catch {
print("Error in saving data: \(error.localizedDescription)")
}
}
}
// ViewModel //
import Foundation
import CoreData
import WidgetKit
class ViewModel: ObservableObject {
let manager = DataManager()
@Published var records: [Little] = []
init() {
fetchRecords()
}
func fetchRecords() {
let request = NSFetchRequest<Little>(entityName: "Little")
do {
records = try manager.context.fetch(request)
records.sort { lhs, rhs in
lhs.trashDate! < rhs.trashDate!
}
} catch {
print("Fetch error for DataManager: \(error.localizedDescription)")
}
WidgetCenter.shared.reloadAllTimelines()
}
}
So I have a view model that fetches data for the app as shown above.
Now, my question is how should my widget get data from CoreData? Should the widget get data from CoreData through DataManager? I have read some questions here and also read some articles around the world. This article ( https://dev.classmethod.jp/articles/widget-coredate-introduction/ ) suggests that you let the Widget struct access CoreData through DataManager. If that's a correct fashion, how should the getTimeline function in the TimelineProvider struct get data? This question also suggests the same. Thank you for your reading my question.