Hello developers,
atm im developing a small app focused on hiking. A core pice of the app is a Map() from MapKit. I only want a few points of interest to be visible on the map (e.g. no stores, no clubs etc.).
My question now is what modifier includes mountain Peaks? I tried .rockClimbing, .nationalPark, .landmark, .skiing & .hiking. However none of them makes mountain Peaks visible on the map.
The complete code would be:
Map()
.mapStyle(.standard(pointsOfInterest: .including([.rockClimbing, .nationalPark, .landmark, .skiing, .hiking])))
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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I'm using SwiftUI WebView and this error happens when app becomes inactive, the webview changes to blank, and will be in this state all along even if reopen a new webview. When I switch back to WKWebview, everything works fine.
environment Xcode 26.1(17B55) on macOS 15.7.1
Error acquiring assertion: <Error Domain=RBSServiceErrorDomain Code=1 "((target is not running or doesn't have entitlement com.apple.developer.web-browser-engine.rendering AND target is not running or doesn't have entitlement com.apple.developer.web-browser-engine.networking AND target is not running or doesn't have entitlement com.apple.developer.web-browser-engine.webcontent))" UserInfo={NSLocalizedFailureReason=((target is not running or doesn't have entitlement com.apple.developer.web-browser-engine.rendering AND target is not running or doesn't have entitlement com.apple.developer.web-browser-engine.networking AND target is not running or doesn't have entitlement com.apple.developer.web-browser-engine.webcontent))}>
this is the code, pretty simple, in load() function i just call page.load().
WebView(vm.page)
.onAppear {
Task {
await vm.load()
}
}
UIViewController's modalInPopover is deprecated and might disappear in the near future. Is there any replacement?
UIViewController's presentViewController:animated:completion is not an equivalent because the modal style cannot be changed while the controller is already presented.
I'm using a custom modifier called AutoSheetDetentModifier to automatically size a sheet based on its content.
On iOS 26, it works as expected: the content height is measured correctly and the sheet shrinks to match that height.
However, on iOS 16, 17 and 18, the same code doesn’t work. The content height is still measured, but the sheet does not reduce its height. Instead, the sheet remains larger and the content appears vertically centered. (Note that content() includes ScrollView)
public struct AutoSheetDetentModifier: ViewModifier {
@State private var height: CGFloat = 380 // default value to avoid bouncing
public func body(content: Content) -> some View {
content
.modifier(MeasureHeightViewModifier(height: $height))
.presentationDetents([.height(height)])
}
}
public struct MeasureHeightViewModifier: ViewModifier {
@Binding var height: CGFloat
public func body(content: Content) -> some View {
content
.fixedSize(horizontal: false, vertical: true)
.background(
GeometryReader { geo -> Color in
DispatchQueue.main.async {
height = geo.size.height
}
return Color.clear
}
)
}
}
extension View {
public func applyAutoSheetDetent() -> some View {
self
.modifier(AutoSheetDetentModifier())
}
}
public var body: some View {
VStack {
header()
content() // includes ScrollView
footer()
}
.background(Color.customGray)
.applyAutoSheetDetent()
}
func content() -> some View {
ScrollView {
VStack {
ForEach(items) { item in
itemRow(item)
}
}
}
.frame(maxHeight: UIScreen.main.bounds.height * 0.7)
}
Screenshot from iOS 26 (working as expected):
Screenshot from iOS 18 (not working):
How can I make .presentationDetents(.height) shrink the sheet correctly on iOS 16–18, the same way it does on iOS 26?
Our app has a UITabBar and the compactInlineLayoutAppearance has a custom font set. This worked fine on iOS 26.0 and 26.1.
[self.bottomTabBar.standardAppearance.compactInlineLayoutAppearance.normal setTitleTextAttributes: @{
NSFontAttributeName:[UIFont fontWithName:@"AvenirNext-DemiBold" size:18.0]
}];
But on iOS 26.2, the system ignores this custom font. How can I apply a custom font to a UITabBar on iOS 26.2?
Hello,
While integrating the Liquid Glass UI introduced in iOS 26 into my existing app, I encountered an unexpected issue.
My app uses a UITabBarController, where each tab contains a UINavigationController,
and the actual content resides in each UIViewController.
Typically, I perform navigation using navigationController?.pushViewController(...) and hide the TabBar by setting vc.hidesBottomBarWhenPushed = true when needed.
This structure worked perfectly fine prior to iOS 26, and I believe many apps use a similar approach.
However, after enabling Liquid Glass UI, a problem occurs.
Problem Description
From AViewController, I push BViewController with hidesBottomBarWhenPushed = true.
BViewController appears, and the TabBar is hidden as expected.
When performing a swipe-back gesture, as soon as AViewController becomes visible, the TabBar immediately reappears (likely due to A’s viewWillAppear).
The TabBar remains visible for a short moment even if the gesture is canceled — during that time, it is also interactable.
Before iOS 26, the TabBar appeared synchronized with AViewController and did not prematurely show during the swipe transition.
Tried using the new iOS 18 API:
tabBarController?.setTabBarHidden(false, animated: true)
It slightly improves the animation behavior, but the issue persists.
If hidesBottomBarWhenPushed is now deprecated or discouraged,
migrating entirely to setTabBarHidden would require significant refactoring, which is not practical for many existing apps.
Is this caused by a misuse of hidesBottomBarWhenPushed,
or could this be a regression or design change in iOS 26’s Liquid Glass UI?
SwiftUI sheet with TextField using autocorrectionDisabled() prevents view model deinit after editing
I present a view as a sheet that contains a TextField and a viewModel. The sheet uses .autocorrectionDisabled() on the TextField.
If I open the sheet and dismiss it without editing, the viewModel is released as expected. But if I edit the TextField and then dismiss the sheet, the viewModel is not deinitialized (it remains retained).
Test Outputs:
// # Present 1st time - Correct ✅
TestViewModel - init - 0x0000600000c12ee0
// Dismiss wihtout editing, deinitialized correctly
TestViewModel - deinit - 0x0000600000c12ee0
// # Present 2st time - Incorrect ❌
TestViewModel - init - 0x0000600000c006c0
// Edit and dismiss, no deinit here
// # Present 3rd time - Incorrect ❌
TestViewModel - init - 0x0000600000c113b0
// Enter text field to edit will deinit previous one
TestViewModel - deinit - 0x0000600000c006c0
// Dismiss, no deinit
// TestViewModel (0x0000600000c113b0) remains retained ⚠️
Using .autocorrectionDisabled(true) gives the same problem. Removing or commenting out .autocorrectionDisabled() fixes the issue, but I don't want autocorrection enabled.
Is this a known SwiftUI bug? Has anyone encountered it and found a workaround?
Sample code:
@main
struct TestApp: App {
@State private var isPresentingSheet: Bool = false
var body: some Scene {
WindowGroup {
VStack {
Button("Present Sheet") {
self.isPresentingSheet = true
}
}
.sheet(isPresented: $isPresentingSheet) {
TestTextInputView()
}
}
}
}
View (check the HERE line):
struct TestTextInputView: View {
@StateObject private var viewModel = TestTextInputViewModel()
@FocusState private var isFocused: Bool
@Environment(\.dismiss) private var dismiss
var body: some View {
NavigationStack {
Form {
TextField("Name", text: $viewModel.name)
.autocorrectionDisabled() // HERE: Comment it out will work without any issue.
.focused($isFocused)
.submitLabel(.done)
.onSubmit {
self.isFocused = false
}
}
.toolbar {
ToolbarItem(placement: .topBarLeading) {
Button("Cancel") { dismiss() }
}
}
}
}
}
View Model:
final class TestTextInputViewModel: ObservableObject {
@Published var name: String = ""
deinit {
print("TestViewModel - deinit - \(Unmanaged.passUnretained(self).toOpaque())")
}
init() {
print("TestViewModel - init - \(Unmanaged.passUnretained(self).toOpaque())")
}
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
I have attached 2 images of our Mac Apps user interface. The app is built for macOS 15.6 or newer.
On macOS 15 and earlier everything looks fine. But the same App running on macOS 26 the controls disappear. We were able to temporarily resolve the problem by adding UIDesignRequiresCompatibility to the info.plist.
This type of nonsense happens all over the app without the compatibility switch. Shouldn't all these legacy controls be backward compatible on Glass?
This part of the app where the controls are disappearing is built in Swift (not swift ui) and uses standard programatic layout and visual constraints.
On macOS 26, there are no Xcode warnings or layout errors on the console relative to the layout so we are confused as to how we would resolve this without the use of UIDesignRequiresCompatibility.
Is this some kind of bug in NSControl glass compatibility? We are not likely to move the entire app into SwiftUI anytime soon. How would we resolve this?
All system colors are displayed incorrectly on the popover view.
Those are the same views present as a popover in light and dark mode.
And those are the same views present as modal.
And there is also a problem that when the popover is presented, switching to dark/light mode will not change the appearance. That affected all system apps.
The following screenshot is already in dark mode.
All those problem are occured on iOS 26 beta 3.
I noticed that I cannot even tell that an NSBox is being used on macOS Tahoe when the system is in light mode. The 'box' background can't be seen so it makes it appear that the subviews in the box aren't positioned correctly (because they are inset from the subview outside the box). There is no visual indicator that that subviews inside this box are grouped together because well, you can't see the box at all.
In Interface Builder the box looks fine at Design Time in "Light Mode". In Dark Mode the box looks fine at design time and at run time.
Just figured I'd throw that out there.
crash stack:
Crashed: com.apple.main-thread
0 libsystem_pthread.dylib 0x90c thread_chkstk_darwin + 60
1 libsystem_pthread.dylib 0x90c ___chkstk_darwin + 60
2 CoreAutoLayout 0x14c4 -[NSISEngine _flushPendingRemovals] + 56
3 CoreAutoLayout 0x2de08 -[NSISEngine _coreReplaceMarker:withMarkerPlusDelta:].cold.1 + 64
4 CoreAutoLayout 0x15d78 -[NSISEngine _coreReplaceMarker:withMarkerPlusDelta:] + 204
5 CoreAutoLayout 0x2ce38 -[NSISEngine constraintDidChangeSuchThatMarker:shouldBeReplacedByMarkerPlusDelta:] + 108
6 CoreAutoLayout 0x15f1c -[NSISEngine tryToChangeConstraintSuchThatMarker:isReplacedByMarkerPlusDelta:undoHandler:] + 100
7 CoreAutoLayout 0x2fdbc -[NSLayoutConstraint _tryToChangeContainerGeometryWithUndoHandler:] + 252
8 CoreAutoLayout 0x3020c -[NSLayoutConstraint _setSymbolicConstant:constant:symbolicConstantMultiplier:] + 452
9 CoreAutoLayout 0x30378 -[NSLayoutConstraint setConstant:] + 84
10 UIKitCore 0x51c3c __74-[UIView(UIConstraintBasedLayout) _autoresizingConstraints_frameDidChange]_block_invoke + 140
11 UIKitCore 0x1841174 -[UIView(AdditionalLayoutSupport) _withUnsatisfiableConstraintsLoggingSuspendedIfEngineDelegateExists:] + 112
12 UIKitCore 0x51b28 -[UIView(UIConstraintBasedLayout) _autoresizingConstraints_frameDidChange] + 452
13 UIKitCore 0x2c894 -[UIView _constraints_frameDidChange] + 100
14 UIKitCore 0x18fac08 -[UIView(Geometry) setFrame:] + 576
15 UIKitCore 0x96712c -[UITabBar setFrame:] + 128
16 UIKitCore 0x1666f4 -[_UITabBarControllerVisualStyle updateTabBarLayout] + 360
17 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
18 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
19 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
20 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
21 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
22 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
23 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
24 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
25 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
26 UIKitCore 0x16671c -[_UITabBarControllerVisualStyle updateTabBarLayout] + 400
27 UIKitCore 0x16642c -[UITabBarController _prepareTabBar] + 128
28 UIKitCore 0x166a10 -[UITabBarController _layoutContainerView] + 376
29 UIKitCore 0x1677a8 -[UITabBarController __viewWillLayoutSubviews] + 28
30 UIKitCore 0x147078 -[UILayoutContainerView layoutSubviews] + 176
31 UIKit 0xb14a0 -[UILayoutContainerViewAccessibility layoutSubviews] + 60
for a more detail crash stack, can see attach file:
crash.txt
crash probabilistic happed after app enter background, and our app support landscape, when crash appear, the system method:
/*
This method is called when the view controller's view's size is changed by its parent (i.e. for the root view controller when its window rotates or is resized).
If you override this method, you should either call super to propagate the change to children or manually forward the change to children.
*/
- (void)viewWillTransitionToSize:(CGSize)size withTransitionCoordinator:(id <UIViewControllerTransitionCoordinator>)coordinator API_AVAILABLE(ios(8.0));
is called;
but for a normal not crash case, when enter background and rotate device, the viewWillTransitionToSize method is not called until app enter foreground;
Are there any suggestions that can help solve this problem, thank you.
Hello!
I’m building my Swift Student Challenge project in Swift Playgrounds, and I’ve run into an issue with app orientation.
Since this is a game, the layout and interactions only work correctly in landscape, but Playgrounds doesn’t offer the usual orientation settings you’d configure in Xcode.
Is there a recommended way to force a landscape-only experience in Swift Playgrounds using SwiftUI? Any workarounds or guidance would be greatly appreciated!
Thank you!
Topic:
UI Frameworks
SubTopic:
SwiftUI
Tags:
Swift Student Challenge
Swift Playground
Playground Support
SwiftUI
We have implemented live activities with broadcast notification using channels. It has been working without a problem for the last 6-8 months. Now we want to upgrade it by starting the channel based live activity via push notification. Whenever I try locally with development channels there isnt any problem regarding to starting live activity.
When we go production on Testflight or App Store it doesn't work after first successful push even though user enters the app and send the new push to start token to our server and we are using the latest token we receive. We couldn't go further with debugging since it works perfectly fine the client when tried locally and we know we can send successful pushes as well since the metrics shows 12% success but we do not actually know what happened to remaining 88%. Every apns request return success with 200 and empty body. How can we further debug this issue. Or is this a common problem, if so, is there any possible solution to this.
As far as we see, token goes to our server so we have the latest token all the time and this whole logic doesn't work without deleting and reinstalling the app.
I have a SwiftUI app that needs to present a fullScreenCover when the user opens a deep link.
This screen must appear above anything currently shown — even if another fullScreenCover is already being presented.
In UIKit, I can achieve this by walking the view controller hierarchy, finding the top-most view controller, and presenting the new full-screen view from there.
What is the recommended way to reproduce this behavior in SwiftUI?
How can I ensure a fullScreenCover is always shown above the current presentation layer, regardless of the app’s UI state?
Topic:
UI Frameworks
SubTopic:
SwiftUI
问题场景:
Xcode26+iOS26系统,UICollectionView的reloadData不会触发调用UICollectionViewCell的layoutSubviews方法。
正常场景:
Xcode26+iOS18及以下系统,UICollectionView的reloadData能够触发调用UICollectionViewCell的layoutSubviews方法。
UITableView的reloadData,会正常调用UITableViewCell的layoutSubviews方法。
Hi everyone!
I've encountered an issue on Mac Catalyst: using the latest inspector modifier causes abnormal Sidebar and Columns state in NavigationSplitView.
Sample Code:
struct ContentView: View {
@State private var isPresented = false
var body: some View {
NavigationSplitView {
List {
ForEach(0..<20, id: \.self) { item in
Text("Item \(item)")
}
}
} content: {
List {
ForEach(0..<20, id: \.self) { item in
Text("Item \(item)")
}
}
} detail: {
List {
}
}
.inspector(isPresented: $isPresented) {
Form {
}
}
}
}
Steps to reproduce:
Xcode 16 beta 7, create a new iOS project
Paste the code above
Enable Mac Catalyst
Run on Mac (macOS 15 beta 9)
Press Command+N three times to open 3 new windows
Click the Sidebar Toggle button
The issue occurs (see screenshot below)
Through testing, I found that as long as the inspector modifier is attached, the issue occurs.
Also, the problem only appears in the 3rd and subsequent newly opened windows—the first two windows work as expected.
FB20061521
Is there a way to display a .icon file in SwiftUI? I want to show the app icon in the app itself but exporting and including the app icon as a PNG feels redundant. This would consume a lot of unnecessary storage especially when including a lot of alternative app icons. There has to be a better way
Otherwise I would file a feedback for that
Thank you
So I noticed this:
A sheet window is presented.
The sheet window has some UI that makes it expandable say a little arrow expandable button.
Click the little expandable button. Now the sheet window controller calls - (void)setFrame:display:animate: on its window to resize.
The parent window flies across the screen to the lower left corner.
I'm on Tahoe 26.1. Seems to be related to NSSheetMoveHelper. Not sure how long this bug has been around. Workaround is to call -setFrame:display:animate: and pass NO to the animate flag. Then the sheet window resizes (but not animated which doesn't look as good as the old behavior but better than suddenly disappearing).
I think Apple may already knows about this bug b/c in an Apple app on Tahoe I see a sheet resizing being done with no animation...
Structs are value types, and the SwiftUI gets reinitialized many times throughout its lifecycle. Whenever it gets reinitialized, would the reference that the delegator has of it still work if the View uses @State or @StateObject that hold a persistent reference to the views data?
protocol MyDelegate: AnyObject {
func didDoSomething()
}
class Delegator {
weak var delegate: MyDelegate?
func trigger() {
delegate?.didDoSomething()
}
}
struct ContentView: View, MyDelegate {
private let delegator = Delegator()
@State counter = 1
var body: some View {
VStack {
Text("\(counter)")
Button("Trigger") {
delegator.trigger()
}
}
}
func didDoSomething() {
counter += 1 //would this call update the counter in the view even if the view's instance is copied over to the delegator?
}
}
We are creating a Replicated FileProvider based application, where we need to change folder icons for root level folders.
I tried below two approaches.
This using NSFileProviderDecorations + Custom UTType, this changed the UI as shown:
This using Custom UTType, this had no UI change:
How can we change the default folder icon, to our custom icon?