Hey folks I'm trying to use .onDrop() on a view that needs to accept files. This works fine, I specify a supportedContentTypes of [.fileURL] and it works great. I got a request to add support for dragging the macOS screenshot previews into my app and when I looked at it, they aren't available as a URL, only an image, so I changed my array to [.fileURL, .image]. As soon as I did that, I noticed that dragging any image file, even from Finder, calls my onDrop() closure with an NSItemProvider that only knows how to give me an image, with no suggestedName. Am I missing something here? I had been under the impression that: The order of my supportedContentTypes indicates which types I prefer (although I now can't find this documented anywhere) Where an item could potentially vend multiple UTTypes, the resulting NSItemProvider would offer up the union of types that both it, and I, support. If it helps, I put together a little test app which lets you select which UTTypes are in supportedContentTypes and then when a file is dragged onto it, it'll tell you which content types are available - as far as I can tell, it's only ever one, and macOS strongly prefers to send me an image vs a URL. Is there anything I can do to convince it otherwise?

I have a SwiftUI view that I have wrapped using UIHostingController for use within UIKit. Requirement: Within the UIKit environment, I want to get all the subviews of this SwiftUI view and determine whether the images within those subviews have finished loading. For UIKit views, we can use view.subviews to get all the subviews and do the check. However, for SwiftUI views, I found that the view.subviews turns out to be an empty array, making it impossible to do further checks. So the question is How can I get the subviews of a SwiftUI view?

Hi, I've got an app that displays markdown in UITextView / NSTextView. I would like it to behave like Notes app does, that is if user types the line start modifier, e.g: "# " or "> " I would like the keyboard to show a capitalized letters. I've tried looking into overriding insertText - and it breaks the predictive text (can not insert white space). I've tried implementing UITextInputTokenizer but no luck either. Like I said, I see the Notes app does it perfectly, so maybe I'm missing something obvious or there is a way to do it without interrupting the auto-correction and predictive text. Ideally same thing can be applied to the NSTextView as the app support both platforms.

Hi Team, when launching an ApplePay session from a 3rd party browser where we get the QR code popup - is it possible to affect the popup's language? We are setting the button's language via locale parameter, but when the QR code pop's up it does not respect this setting (seems like it respects browser language). Button in Arabic Corresponding popup Browser language Arabic Coresponding popup I was unable to find anything in the documentation - could you please either point me to the relevant documentation or confirm/deny that it is possible to request a language for the popup via tjr javascript API? Kind regards Tomas

I have filed a bug report for this (FB17734946), but I'm posting it here verbatim in case others have the same issue and in hopes of getting attention from an Apple engineer sooner. When calling setNeedsDisplayInRect on a CATiledLayer - or a UIView whose backing layer is CATiledLayer - one would expect to re-draw only a region identified by the rect passed to the method. This is even written in the documentation for the class: "Regions of the layer may be invalidated using the setNeedsDisplayInRect: method however the update will be asynchronous. While the next display update will most likely not contain the updated content, a future update will." However, upon calling this method, CATiledLayer redraws whole contents instead of just the tile at the specified rect, and it flashes when doing so. It behaves exactly the same as if one had called setNeedsDisplay without passing any rect; all contents are cleared and re-drawn again. I'm 100% sure I've passed in the correct rect of the exact tile that I need to redraw. I have even tried passing much smaller rects, but still the same. (And yes, the rect I've passed accounts for the current level of detail.) I have found this GitHub repo https://github.com/frankus/NetPhotoScroller, which based on discussion from here https://forums.macrumors.com/threads/catiledlayer-blanks-out-tiles-when-redrawing.1333948/ aims at solving these issues by using two private methods on CATiledLayer class: (void)setNeedsDisplayInRect:(CGRect)r levelOfDetail:(int)level; (BOOL)canDrawRect:(CGRect)rect levelOfDetail:(int)level; I have explored the repo in detail, however I wasn't able to test exactly this code from the GitHub repo. I have tried using those two private methods myself (through an Objective-C class that defines the methods in the header file and then a swift class which inherits it), but I couldn't solve the issue; the flashing and the full re-draw is still there. After doing a lot of research, the conclusion seems to be that one cannot use CATiledLayer with contents that are downloaded remotely, on demand, as tiles are being requested. I have, however, found one interesting thing which seems to work so far: before calling setNeedsDisplayInRect (or just setNeedsDisplay, as they behave the same for CATiledLayer in my testing), cache the current layer's contents, and after calling setNeedsDisplay (or setNeedsDisplayInRect), restore the contents back to the layer. This prevents flashing and preserves any tiles that were drawn at the time of the re-draw. let c = tiledLayer.contents tiledLayer.setNeedsDisplay(tileRect) tiledLayer.contents = c However! Docs clearly state the warning: Do not attempt to directly modify the contents property of a CATiledLayer object. Doing so disables the ability of a tiled layer to asynchronously provide tiled content, effectively turning the layer into a regular CALayer object. I believe this message implies modifying the contents property with some raw content, like image data, and that it may be safe to re-apply the existing contents (which are in my testing of type CAImageProvider) -- but I can't rely on an implementation detail in my production app. I have tested this and confirmed that the bug appears on: iPhone 14 Pro, iOS 18.5 iPhone 13 Pro, iOS 17.5.1 iPhone 5s, iOS 15.8.3 iPad Pro 1st gen, iPadOS 18.4.1 a couple simulator versions I can also confirm that the fix (to re-apply contents property) is also working properly on all these versions. Is this expected behavior, that tiled layer redraws itself entirely instead of redrawing specific tiles? Is it safe to modify contents of a CATiledLayer by re-applying the existing contents? If not, is there an alternative to avoid flashing?

I am experiencing an issue while using CPGridTemplate within CPTabBarTemplate in my CarPlay app running in the simulator. On app launch, when I select the second item in the grid, it does not visually reflect as selected in the UI. This behavior is unexpected, as the grid item selection should update accordingly. Has anyone encountered this issue or found a solution to ensure proper item selection?

I am using live activity in my app. Functionality is start, update & end events are started from the server. There is one interaction button added using app intent in live activity widget. That button needs to update widget ui locally using activity kit. Issue is when os receives first start event push then update ui works fine and reflecting on live activity widget but when update notification receives by os after 1 mins then action button stops updating the ui locally. Can anyone please add some suggestions to fix this.

https://github.com/apple/sample-food-truck Hi! I'm seeing what looks like some weird navigation issue in the Food Truck app. It's from the Live Activity that should deep link to a specific point in the app. There seems be some state where the app is not linking to the correct component. Here are my repro steps on iPhone: Start live activity from OrderDetailView. Navigate to Sidebar component. Tap the Live Activity. App opens TruckView. The App should be opening the OrderDetailView for the Order that was passed to the Live Activity. This seems to work when the app is not currently on Sidebar. Any ideas? I'm testing this on iPhone OS 18.4.1. Is this an issue inside NavigationSplitView? Is this an issue with how Food Truck handles deeplinking?

Hello, I'm working on an SwiftUI iOS app that shows a list of timers. When the timer is up then I pop up an alert struct. The user hits "ok" to dismiss the alert. I am trying to include an alarm sound using AVFoundation. I can get the sounds to play if I change the code to play when a button clicks so I believe I have the url path correct. But I really want it to play during the alert pop up. I have not been able to find examples where this is done using an alert so I suspect I need a custom view but thought I'd try the alert route first. Anyone try this before? @State var audioPlayer: AVAudioPlayer? .alert(isPresented: $showAlarmAlert) { playSound() -- Calls AVFoundation return Alert(title: Text("Time's Up!")) } func playSound() { let alertSoundPath = Bundle.main.url(forResource: "classicAlarm", withExtension: "mp3")! do { audioPlayer = try AVAudioPlayer(contentsOf: alertSoundPath) audioPlayer?.play() } catch { appData.logger.debug("Error playing sound: \(alertSoundPath)") } }

Something func applicationWillEnterForeground is not getting called for specific iOS 18.3.2

Hello! I wanted to see if someone with more UIKit experience than me can help me out on guiding me in the right direction for conditionally adding and deleting a row in a UITableView. What I Want to Accomplish I have a tip slider with percentages (0% - 20%) with a custom option on the end. I'm wanting to, when the custom option is tapped, bring up a row immediately below there and have a UITextField. When another option, let's say 10%, is tapped, I want the text field row to go away. Can someone explain to me how this would work? And if so, provide an example? Thank you!

I have a button with the following properties: accessibilityLabel: "Action Button", traits: "Button", accessibilityHint: "Performs the main action". The voiceover reads the button as follows: Action Button, Button, Performs the main action. I want to understand how to configure it to only speak the accessibilityHint or only the accessibilityLabel and never speak the traits. In another example, a switch has the traits: Button, and Toggle. So these traits are a part of what the voiceover speaks. I want only the accessibilityLabel or accessibilityHint to be spoken in this case. Please let me know how. Thanks

I have a Chart displaying Counts per Date over 2-3 years. I'd like to have the XAxis mark consist of MM-yy or even MM/nyy. Is this possible? OK, just saw AxisValueLabel(format: .dateTime.month().year()) which gives e.g. Mar 2024. This is good. Better might be Mar 24 (maybe a Y3K problem ;-) or even better Mar. OR Mar 24. 2024 Or best increment the year when it changes. Are any of these alternate formats possible? Thanks, David PS, my current .chartXAxis code .chartXAxis { AxisMarks(values: .stride(by: .month, count: 3)) { value in if value.as(Date.self) != nil { AxisValueLabel(format: .dateTime.month().year()) AxisGridLine() AxisTick() } } }

Hi, I have been trying to subscribe to brightnessDidChangeNotification (https://developer.apple.com/documentation/uikit/uiscreen/brightnessdidchangenotification) with my code: var publisher = NotificationCenter.default.publisher(for: UIScreen.brightnessDidChangeNotification) .map { _ -> Double in return UIScreen.main.brightness } But it does seem that no such event is fired on Mac Catalyst 15.5. https://developer.apple.com/documentation/uikit/uiscreen/brightnessdidchangenotification claims that API is available since 13.1. Could anybody tell me if I'm doing something wrong or if the API is not supported at the moment? Thank you!

When my CPMapButton is selected/focused, I would like to be able to provide a focusedImage to correctly show the button when the blue focus is shown. Currently I have: What do I need to do to create an image that works more like the panning interface buttons?

This text is cut off for some unknown reason, but if you explicitly specify the default font, it is displayed correctly. Various solutions like .fixedSize(horizontal:,), frame(maxWidth:), lineLimit() do not solve the problem. Any other text does not have such problems. The bug is reproduced on iPhone 12 (iOS 18.4.1) public var body: some View { Text("Включите уведомления, чтобы первыми узнавать о новых коллекциях, эксклюзивных предложениях и статусе доставки") .padding(.horizontal) // .font(.system(size: 17)) // it works correctly with this }

My old UIKit popovers are no longer anchoring to their sourceView and sourceRect. Started happening while testing on IPadOS 18.5 after updating to Xcode 16.4. Has anyone else had to fix this problem? Popovers now slide up from the bottom to the center of the screen.

Hi, I'm adding tabs to the iOS version of my multiplatform app using TabView. I want the individual tabs to have names and icons. In iOS 17 and below, I have to do this using: tabContent().tabItem { Label(titleKey, systemImage: systemImage) } but this is deprecated, so in iOS 18 I would like to use the new version: Tab(titleKey, image: systemImage) { content() } It would be annoying to have to have the two cases for each individual tab, so I'm trying to abstract it into a custom SwiftUI view like this: var body: some View { if #available(iOS 18.0, *) { Tab(titleKey, image: systemImage) { content() } } else { content().tabItem { Label(titleKey, systemImage: systemImage) } } } There's a bit more to the custom view because I also have cases for iPad and macOS where I just have the views next to each other without tabs, but that's not really relevant to the question other than providing further motivation for abstracting this. However, with this code, I get the error: 'buildExpression' is unavailable: this expression does not conform to 'View' on the Tab line, because Tab isn't a view, and it can only be used directly inside a TabView. For now at least, I can just use tabItem on all iOS versions and it works, but I'd prefer not to in case it is removed some time soon. I do want to support iOS 17 because that's what my iPad runs. Is there any clean way to do this?

I am trying to work with the data inside the barcode string in shared PKPass. The documentation shows that is should look for @property (nonatomic, readonly, nullable) PKBarcode *primaryBarcode; I have tried to use it like this guard let code = pass.primaryBarcode?.message else { return } I get a constant message that PKPass has no member primaryBarcode The PKPass.h file in my IOS SDK does not seem to include the @property primaryBarcode or @property barcode. I am running Xcode 16.4 (16F6) and my app target is 17.6 + Is there a restriction on this property? I cannot find an SDK later than mine - the App Store does not offer one. I am unsure of this is a public or private issue - does anyone know? Thanks for reading this. Max

In SwiftUI for macOS, how can I animate the transition from one Tab to another Tab within TabView when the selection changes? In AppKit, we can do the following: let tabViewController = NSTabViewController() tabViewController.transitionOptions = [.crossfade, .allowUserInteraction] How can I achieve the same crossfade effect when using TabView?