I have created an AppIntent and added it to shortcuts to be able to read by Siri. When I say the phrase, the Siri intent dialog appears just fine. I have added a custom SwiftUI View inside Siri dialog box with 2 buttons with intents. The callback or handling of those buttons is not working when initiated via Siri. It works fine when I initiate it in shortcuts. I tried using the UIButton without the intent action as well but it did not work. Here is the code.
static let title: LocalizedStringResource = "My Custom Intent"
static var openAppWhenRun: Bool = false
@MainActor
func perform() async throws -> some ShowsSnippetView & ProvidesDialog {
return .result(dialog: "Here are the details of your order"), content: {
OrderDetailsView()
}
}
struct OrderDetailsView {
var body: some View {
HStack {
if #available(iOS 17.0, *) {
Button(intent: ModifyOrderIntent(), label : {
Text("Modify Order")
})
Button(intent: CancelOrderIntent(), label : {
Text("Cancel Order")
})
}
}
}
}
struct ModifyOrderIntent: AppIntent {
static let title: LocalizedStringResource = "Modify Order"
static var openAppWhenRun: Bool = true
@MainActor
func perform() async throws -> some OpensIntent {
// performs the deeplinking to app to a certain page to modify the order
}
}
struct CancelOrderIntent: AppIntent {
static let title: LocalizedStringResource = "Cancel Order"
static var openAppWhenRun: Bool = true
@MainActor
func perform() async throws -> some OpensIntent {
// performs the deeplinking to app to a certain page to cancel the order
}
}
Button(action: {
if let url = URL(string: "myap://open-order") {
UIApplication.shared.open(url)
}
}
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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As SwiftUI adoption grows, developers face challenges in effectively measuring and optimizing SwiftUI app performance within automated tests.
Currently, the only viable approach to analyzing SwiftUI performance is through Profiling (Instruments), which, while powerful, lacks the ability to be incorporated into automated testing workflows. It would be incredibly valuable if XCTest could introduce new performance metrics specifically tailored for SwiftUI, allowing us to write tests against common performance bottlenecks.
Suggested Metrics:
View Body Evaluation Count – Tracks how often a SwiftUI body is recomputed to detect unnecessary re-renders.
Slow View Bodies – Flags SwiftUI views that take a significant amount of time to compute their body.
These metrics would help developers identify inefficiencies early, enforce performance best practices through CI/CD pipelines, and ensure a smooth user experience. I believe adding these performance metrics would be a game-changer for SwiftUI development.
Thank you for your time and consideration!
Hello! We can animate Text color via foregroundStyle very nicely in SwiftUI like so:
Text("Some text here")
.foregroundStyle(boolValue ? Color.green : Color.blue)
withAnimation {
boolValue.toggle()
}
However, if the foregroundStyle is a gradient, the color of the Text view changes immediately without animation.
The code below works to animate a gradient foregroundStyle on an SF Symbol, but it does not work when applied to a Text view. Is it possible to animate a Text view foregroundStyle between gradient values?
Image(systemName: "pencil.circle.fill")
.foregroundStyle(boolValue ? .linearGradient(colors: [.red, .orange], startPoint: .top, endPoint: .bottom) : .linearGradient(colors: [.green, .blue], startPoint: .top, endPoint: .bottom))
Thanks for your help!
I found a memory leak in tvOS 17.4, but it's not happening in tvOS 18.0
here is the code flow
1.I have controller inside which I have tableView which in turn contains a collectionview
here I have passed self to tableViewcell as delegate and then from tableview cell I have passed self again as delegate to collectionViewcell, but memory is not released, because self is retained
"I have passed self as weak every where still memory leak is happening only in tvOS 17.4 and below versions. but in 18.0 and above versions it's fine"
We were using below delegate methods from QuickLook to get modified PDF file URL after the sketching But we are not able see the multi line text properly laid out on PDF and part of text missing. Same time Other pencil kit tools are working as expected.
`func previewController(_ controller: QLPreviewController, didSaveEditedCopyOf previewItem: QLPreviewItem, at modifiedContentsURL: URL)
func previewController(_ controller: QLPreviewController, didUpdateContentsOf previewItem: any QLPreviewItem)`
We tested all code in iOS 18.2.
Please let us know if the text edited URL on PDF can be retrieved in any possible way without tampering text
In macOS application, we are using SwiftUI as an entry point to our application and attaching appdelegate using NSApplicationDelegateAdaptor.
We are using NSViewControllerRepresentable to add a View Controller to the hiracrchy so that we can store intance of viewcontroller and add content to it programatically .
@main
struct TWMainApp: App {
@NSApplicationDelegateAdaptor private var appDelegate: TWAppDelegate
internal var body : some Scene {
TWInitialScene ()
}
}
TWInitialScene :
public struct TWInitialScene : Scene {
public var body : some Scene {
WindowGroup {
TWInitialView ()
}
}
}
TWInitialView :
struct TWInitialView : View {
@Environment(\.scenePhase) private var scenePhase
var body : some View {
TWAppKitToSwiftUIBridge ()
}
}
TWAppKitToSwiftUIBridge :
struct TWNSKitToSwiftUIBridge : NSViewControllerRepresentable {
func makeNSViewController(context: Context) -> TWNSViewController {
let view_hierarchy : TWNSViewController
view_hierarchy = TWStaticContext.sViewController
return view_hierarchy
}
func updateNSViewController(_ nsViewController: TWNSViewController, context: Context) {
}
}
@objc
public class TWStaticContext : NSObject
{
public static let sViewController = TWNSViewController ()
public override init () {}
@objc
public static func GetViewController () -> TWNSViewController
{
return TWStaticContext.sViewController
}
}
public class TWNSViewController : NSViewController {
override public func viewDidLoad ()
{
super.viewDidLoad ()
}
}
To add content to the hirarchy we are accessing viewcontroller's intance and adding content to it like this :
public func PaintInitialScreen () {
let label = NSTextField(labelWithString: "TW window")
label.frame = NSRect(x: 100, y: 200, width: 200, height: 200)
// Adding content to viewcontroller
TWStaticContext.sViewController.view.addSubview(label)
}
We are using this approach because we have a contraint in our application that we have to update UI programatically and on compile time we dont know what we want to show . We will be adding content on runtime based on how many button we want, what label we want , where to place it etc.
When we were using purely appKit application, doing things programatically was simple but since SwiftUI is a declarative application we have to use above approach.
Rational for shifting to SwiftUI entry point is that we want our application to be future safe and since apple is more inclined to SwiffUI, we want to design our entry flow to use SwiftUI entry point . And SwiftUI being declarative, we are using appKit to add content to hiracrchy programtically.
We have used similar apprach in iOS also , where are using UIApplicationDelegateAdaptor inplace of NSApplicationAdaptor . And UIViewControllerReprestable in place of NSViewControllerRepresentable.
Is this right approach to use ?
Hello, since I'm using SwiftUI and some interface should be optimized for different devices(like iPad and iPhone), so I'm curious that what device would be used to run the App? Is it iPad or iPhone?
And could I use SDKs like SiriKit?
Hi,
I have an existing Mac app on the App Store with a couple of widgets as part of the app. I want to now add a new widget to the WidgetBundle. When I build the updated app with Xcode, and then run the updated app, the widgets list doesn't seem to get updated in Notification Center or in the WidgetKit Simulator.
I do have the App Store version installed in the /Applications folder as well, so there might be some conflict. What's the trick to getting the widgets list to run the debug version?
I would like to report a memory leak issue in watchOS 11.2 that occurs when using .navigationTitle() inside a sheet. This behavior is reproducible both on the simulator and on a real device, but not on iOS. While this does not register as a leak in Instruments, the deinit of the DetailsViewModel is never called, and multiple instances of the view model accumulate in the Memory Graph Debugger. Commenting out .navigationTitle("Sheet View") resolves the issue, and deinit prints as expected. Using @MainActor on the DetailsViewModel does not fix the issue. Nor does switching to @StateObject and using ObservableObject resolve the memory retention.
This issue seems related to other SwiftUI memory leaks that have been reported:
https://developer.apple.com/forums/thread/738840
https://developer.apple.com/forums/thread/736110?login=true&page=1#769898022
https://developer.apple.com/forums/thread/737967?answerId=767599022#767599022
Feedback Number: FB16442048
struct MainView: View {
var body: some View {
NavigationStack {
NavigationLink("Details", value: 1)
.navigationDestination(for: Int.self) { _ in
DetailsView()
}
}
}
}
struct SheetObject: Identifiable {
let id = UUID()
let date: Date
let value: Int
}
@Observable
@MainActor
final class DetailsViewModel {
var sheetObject: SheetObject?
init() {
print("Init")
}
deinit {
print("Deinit")
}
func onAppear() async {
try? await Task.sleep(for: .seconds(2))
sheetObject = .init(date: .now, value: 1)
}
}
struct DetailsView: View {
@State private var viewModel = DetailsViewModel()
@Environment(\.dismiss) var dismiss
var body: some View {
Text("Detail View. Going to sheet, please wait...")
.task {
await viewModel.onAppear()
}
.sheet(item: $viewModel.sheetObject) { sheetObject in
SheetView(sheetObject: sheetObject)
.onDisappear {
dismiss()
}
}
}
}
struct SheetView: View {
let sheetObject: SheetObject
@Environment(\.dismiss) var dismiss
var body: some View {
NavigationStack {
VStack {
Text(sheetObject.date.formatted())
Text(sheetObject.value.formatted())
Button("Dismiss") {
dismiss()
}
}
.navigationTitle("Sheet View") // This line causes a memory leak. Commenting out, you will see "Deinit" be printed.
}
}
}
Topic:
UI Frameworks
SubTopic:
SwiftUI
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"}}
In Apple's Maps app, an annotation is made up of a circle shape or rounded rectangles with a glyph-image.
When selecting an annotation, the annotation animates into a balloon marker (see attached GIF).
How does Apple Maps solve this - from custom annotation to balloon marker with spring animation?
I switched my Maps implementation from SwiftUI to UIKit with a UIViewRepresentable to support annotation clustering - and it works beautifully.
But how to subclass an MKAnnotationView (or MKMarkerAnnotationView <- the balloon) to enable selection and animation as in Apple Maps?
MKMarkerAnnotationView only show balloon markers and I tried everything inside MKAnnotationView (CALayer, etc.)
When pushing a page in the navigation, changing the state of interactivePopGestureRecognizer causes the page to freeze.
Just like this:
#import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
CGFloat red = (arc4random_uniform(256) / 255.0);
CGFloat green = (arc4random_uniform(256) / 255.0);
CGFloat blue = (arc4random_uniform(256) / 255.0);
CGFloat alpha = 1.0; //
self.view.backgroundColor = [UIColor colorWithRed:red green:green blue:blue alpha:alpha];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
btn.frame = CGRectMake(0, 0, 100, 44);
btn.backgroundColor = [UIColor redColor];
btn.center = self.view.center;
[btn setTitle:@"push click" forState:UIControlStateNormal];
[btn addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];
[self.view addSubview:btn];
}
- (void)click:(id)sender {
[self.navigationController pushViewController:[ViewController new] animated:YES];
}
- (void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];
self.navigationController.interactivePopGestureRecognizer.enabled = NO;
}
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
self.navigationController.interactivePopGestureRecognizer.enabled = YES;
}
@end
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
Hello everyone,
I am currently working on a project that requires me to programmatically manage keyboard layouts on both iOS and macOS devices. I'm looking for a comprehensive list of KeyboardLayout ID values for all the native keyboard layouts available in both iOS and macOS. While I can extract some of this information from the /System/Library/Keyboard Layouts/ directory on macOS, I cannot extract all without adding every keyboard layout active, having a complete and pre-compiled list would be immensely helpful.
Does anyone here have such a list or know where I might find one? Any guidance on this matter would be greatly appreciated.
Thank you in advance for your assistance!
JJ
I wanted to perform simulation in my application as a self tour guide for my user. For this I want to programatically simulate various user interaction events like button click, keypress event in the UITextField or moving the cursor around in the textField. These are only few examples to state, it can be any user interaction event or other events.
I wanted to know what is the apple recommendation on how should these simulations be performed? Is there something that apple offers like creating an event which can be directly executed for simulations. Is there some library available for this purpose?
SWIFTUI :
Chart control / view
is there way to align the Legends to align the center
I see there only 2 options,
.chartLegend(position: .bottom, alignment: .leading,spacing: 10)
.leading or .trailing
code :
Chart{
.....
SectorMark..
}
.chartLegend(position: .bottom, alignment: .leading,spacing: 10)
Topic:
UI Frameworks
SubTopic:
SwiftUI
I'm creating an app which gamifies Screen Time reduction. I'm running into an issue with apples Screen Time setting where the user can disable my apps "Screen Time access" and get around losing the game.
Is there a way to detect when this setting is disabled for my app? I've tried using AuthorizationCenter.shared.authorizationStatus but this didn't do the trick. Does anyone have an ideas?
I'm attempting to write a macOS version of https://stackoverflow.com/a/74935849/2178159.
From my understanding, I should be able to set the menu property of an NSResponder and it will automatically show on right click.
I've tried a couple things:
A: set menu on an NSHostingController's view - when I do this and right or ctrl click, nothing happens.
B: set menu on NSHostingController directly - when I do this I get a crash Abstract method -[NSResponder setMenu:] called from class _TtGC7SwiftUI19NSHostingControllerGVS_21_ViewModifier_...__. Subclasses must override
C: manually call NSMenu.popup in a custom subclasses of NSHostingController or NSView's rightMouseDown method - nothing happens.
extension View {
func contextMenu(menu: NSMenu) -> some View {
modifier(ContextMenuViewModifier(menu: menu))
}
}
struct ContextMenuViewModifier: ViewModifier {
let menu: NSMenu
func body(content: Content) -> some View {
Interaction_UI(
view: { content },
menu: menu
)
.fixedSize()
}
}
private struct Interaction_UI<Content: View>: NSViewRepresentable {
typealias NSViewType = NSView
@ViewBuilder var view: Content
let menu: NSMenu
func makeNSView(context: Context) -> NSView {
let v = NSHostingController(rootView: view)
// option A - no effect
v.view.menu = menu
// option B - crash
v.menu = menu
return v.view
}
func updateNSView(_ nsView: NSViewType, context: Context) {
// part of option A
nsView.menu = menu
}
}
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
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