I'm getting the following error in my swift build targeting VisionOS 2.0 : " 'defaultDisplay' is unavailable in visionOS " TLDR : how do I specify an initial window position in visionOS? The docs seem to be off? - see below. The docs say it is available, but it is not, or at least my XCODE (Version 16.0 ) is throwing errors on it : https://developer.apple.com/documentation/swiftui/scene/defaultwindowplacement(_:) I know apple is opinionated about window placement in visionOS, and maybe it will never be available, but the docs say it is in visionOS 2.0+ and it sure would be nice to be able to specify a default position toward the bottom of one's FOV, etc . Side-note -- the example code in that doc also has the issue that "Window" is not available in visionOS ( WindowGroup is ). example code -- barely modified from example code in doc : var body: some Scene { WindowGroup("MyLilWindow", id: "MyLilWindow") { TestView() } .windowResizability(.contentSize) .defaultWindowPlacement { content, context in let displayBounds = context.defaultDisplay.visibleRect let size = content.sizeThatFits(.unspecified) let position = CGPoint( x: displayBounds.midX - (size.width / 2), y: displayBounds.maxY - size.height - 140) return WindowPlacement(position) } }

I am honored that I successfully participated in the "Envision the future: Build great apps for visionOS"(https://developer.apple.com/events/view/ZCH7ZUY24C/dashboard) conference. However, unfortunately, I am in China, and due to the visa problem (because it usually takes at least 2 months to apply for a visa, but it only takes about 10 days from the time I received the notice to the meeting), I can't go to the United States to participate in the site. So I hope Apple can place an iPad on site and create a FaceTime link, and then I can make a call to this iPad. I also told Apple about this suggestion, but now there are only a few days left to start. They didn't reply to me. Even Apple has sent me the ticket to the Developer Center and asked me to add it to the Apple Wallet App, which means that Apple has not There is a request to deal with me. So I hope you can give me some advice or help me for those who know about this aspect. For Apple's internal engineers, if possible, I hope you can contact the person who manages this meeting. I'm very grateful for this. Thank you.

I have a created an AnchorEntity for my index finger tip and then created a model entity (A sphere) as a child of it. This model entity has a collision component and a physics body component. I tried using dynamic and kinematic modes for the physics body component. I have created a plane from a cube that has collision component and a static physics body. I have subscribed to the CollisionEvents.Began on this plane. I have also stored it in a EventSubscription state variable. @State private var collisionSubscription: EventSubscription? The I subscribed as follows collisionSubscription = content.subscribe(to: CollisionEvents.Began.self, on: self.boxTopCollision, { collisionEvent in print("something collided with the box top") }) The collision event fires when I directly put the sphere above the plane and let gravity do the collision, but when the the sphere is the child of the anchor entity, the collision events don't happen. I tried adding collision and physics body component directly to the anchor entity and that doesn't work too. I created another sphere with a physics body and a collision component and input target component and manipulate it with a drag gesture. When the manipulation is happening and collide the plane and the sphere the events don't happen when my sphere is touching the plane, but when the gesture end and the sphere is in contact with the plane, the event gets fired. I am confused as to why this is happening. All I want to do is have a collider on my finger tip and want to detect the collision with this plane. How can I make this work? Is there some unstated rule somewhere as where a physics body is manipulated manually it cannot trigger collision events? For more context. I am using SpatialTrackingSession with the tracking configuration of .hand. I am successfully able to track the finger tip.

Hello everyone, I'm developing an app for visionOS that utilizes HealthKit to query heart rate data. However, I'm encountering an issue where the app doesn't retrieve the latest heart rate values. Specifically, it fails to get live heart rate data even after the data has been saved to the Health app. The readings my app displays are outdated and do not match the current values shown in the Health app. Here's what I've tried so far: Fetching Heart Rate Samples: Used HKSampleQuery and HKAnchoredObjectQuery to fetch the most recent heart rate samples. Despite this, the data retrieved is still not up-to-date. Checking Permissions: Ensured that all necessary HealthKit permissions are granted. The app has authorization to read heart rate data and write workout data. My questions are: Is there a known issue or limitation with HealthKit on visionOS that prevents apps from accessing the latest heart rate data? Are there additional steps or configurations required to access live heart rate data in visionOS apps? Has anyone successfully implemented live heart rate monitoring on visionOS, and if so, could you share how you achieved it?

My app has two Window Groups: Window1 and Window2 Moving Window2 to Window1 will overlay, and I cannot see or interact with Window1. My question is, is there any way that I can make Window1 always on top, and whenever Window2 moves in front of Window1, will it be overlayed instead of Window1?

Today I updated my macbook pro to macOS sequoia. with this I also downloaded the latest Xcode and visionOS 2 packages. I had a working project. Which did work with my vision pro which is updated to the latest visionOS 2. But now whenever I try to click on preview in xcode while editing a swift file I am receiving the following error: (lot of lines here) Library/Developer/Xcode/DerivedData/test2-fznbrpphddkqdaddrzamkayoajjm/Build/Intermediates.noindex/RealityKitContent.build/Debug-xrsimulator/RealityKitContent_RealityKitContent.build/DerivedSources/RealityAssetsGenerated/CustomComponentUSDInitializers.usda error: Tool terminated by signal 'Segmentation fault: 11' I tried exiting and restarting my mac but the problem is not going away. Can someone help me with this? Thank you!

Hi, we have in our app an immersive space and we taught the palm menu button is not available in immersive spaces, but when I look in the hand and tap the menu button appear. Is it possible to keep it hidden? Because we a have an hand tracking feature in palm and when we try to press a button to overlap the palm it triggers the menu button and then when the user presses again by mistake, it sends the application to the background. This is very important for us because we would like to release this hand-tracking feature as soon as possible. Here is a link with to a video with the problem: https://drive.google.com/file/d/1cfOcdzF19h_mbmpvkVNCJjXEBJecVeJL/view?usp=sharing

Hello I was wondering if the keyboard awareness feature that came with visionOS 2 would also work for the Mac Book keyboard if someone is in an immersive .progressive custom environment such as the "Garden" environment from Construct an immersive environment for visionOS in e.g. an app I'm currently developing, to see one's keyboard. I haven't managed to achieve it so far. Thank you very much in advance!

I am trying to position the share sheet popped up by the shareLink API on VisionOS, but the share sheet is always anchored by at the label position. I checked the Photos app is achieving this already, the share sheet there appears at very center of the window while the share button locates at the corner inside the menu. How is this possible to make it?

I am having trouble with initializing the SharePlay. It works but we have to leave the game (click the close button) and rejoin it, sometimes several times, for it to establish the connection. I am also having trouble sharing images over SharePlay with GroupSessionJournal. I am not able to get it to transfer any amount of data or even get recognition on the other participants in the SharePlay that an image is being sent. We have look at all the information we can find online and are not able to establish a connection. I am not sure if I am missing a step, or if I am incorrectly sending the data through the GroupSessionJournal. Here are the steps I took take to replicate the issue I have: FaceTime another person with the app. Open the app and click the SharePlay button to SharePlay it with the other person. Establish the SharePlay and by making sure that the board states are syncronized across participants. If its not click the close button and click open app again to rejoin the SharePlay. (This is one of the bugs that I would like to fix. This is just a work around we developed to establish the SharePlay. We would like it so that when you click SharePLay and they join the session it works.) Once the SharePlay has been established, change the image by clicking change 1 image. Select a jpg image. The image that represents 1 should be not set. If you dont see the image click on any of the X in the squares and it will change to the image. The image should appear on the other participant in the SharePlay. (This does not happen and is what we have not been able to figure out how to get working.) Here are the classes for the example project I created: Content View Game Model Class Activity Manager Main Starter Class

Hi, Following the wwdc24 video - What’s new in Quick Look for visionOS, I've managed to open a 3D model using PreviewApplication by calling let previewItem = PreviewItem(url: modelURL, displayName: "Easter", editingMode: .disabled) _ = PreviewApplication.open(items: [previewItem]) However, the "Save to Downloads" option is aways there(see attached screenshot). As the models are user generated content, and I don't want the download option to be available to all users. How to disable it?

How to make a specified entity in RealityView be captured by users: This entity has physical and collision components, and the user will not change when he does not grasp the action. However, when the user makes a grab hand gesture and is very close to the entity (there can be a small deviation), an Anchor component will be enabled to bind the entity to the hand, but when the user lets go, he will fall along the y-axis of the current position (affected by the physical component). I hope you can help me. Thank you.

How to detect whether two entities collide in RealityView and execute some instructions after the collision. It is assumed that both entities have collision components, and one of them also has an anchor component (such as a binding hand).

I have been implementing the LongPressGesture to have a menu come up upon a long press. I love the functionality and it is very close to being where I want it to be. I don't know if this is a visionOS-specific thing, but I am hoping to control the corner radius of the pulled-out element behind my "button." I've wrangled hover effects in the past with overlays, but I'm not sure what to target in this case. Worst case, I'll have to change the border radius on all of my tiles to match this LongPressGesture-controlled behavior, or I could possibly change the radius onLongPressGesture to match. Is there a simpler solution? Thanks!

Hello, I'm currently working on a project that requires real-world object recognition and labeling. I understand that due to the security and privacy issues, we are unable to access the vision pro camera feed. Is there any other external way to solve this problem? Thank you!

I'm working on a school project that allows users to open a .USDZ file (using Quick Look) on the webpage while using Apple Vision Pro to put the object in their physical envirnment, the project is deployed on Vercel. I'm testing the page with my apple vision pro, when I click open the .USDZ file, I'm seeing a triangle with an exclamation mark while it's trying to load, but it won't load. Does anybody know how to troubleshoot this issue?

Hi, My app allows users to share and view spatial photos. For viewing spatial photos, I'm using a plane in a RealityView that has a camera index switch material node, which takes the stereo images as the inputs. For sharing native spatial photos taken on the vision pro, prior to visionOS 2.0, I extract the stereo image pair and merge them into a single side-by-side image to upload to the app's backend. However, since visionOS 2.0 introduced generating spatial photos from normal photos, I've been seeing some unexpected behaviours in my app, while on the other hand, they can be viewed correctly in the system Photos app: Sometimes the extracted images have different size, the right image is smaller than the left image. See the first image in the google drive below, taken with iPhone 15 Pro. Even if the image pair have the same size, when viewed in my app, it has some artefacts, especially around the edge of objects which are closer to the camera. See the second image in the google drive below, taken with iPhone 11. Google drive link here: https://drive.google.com/drive/folders/1UTfpxvO3-ChqshwfyzY5E_KCgk8VgUaa I know that now Quicklook preview application can support viewing spatial photos now, but I would like to keep it the way I implemented in the app, for compatibility concerns. Below is a code snippet that deals with the extraction. Please point out the correct way to extract stereo image pair from a generated spatial photo. Happy to submit a code-level support request if more information is needed. // the data is from photos picker item let data = try await photo.loadTransferable(type: Data.self) let source = CGImageSourceCreateWithData(data as CFData, nil) let sbsImage = source.extractSpatialPhoto() extension CGImageSource { func extractSpatialPhoto() -> UIImage? { guard let leftCGImage = extractSpatialImage(at: 0), let rightCGImage = extractSpatialImage(at: 1) else { return nil } let leftImage = UIImage(ciImage: leftCGImage) let rightImage = UIImage(ciImage: rightCGImage) guard leftImage.size == rightImage.size else { return nil } // merge left + right let size = CGSize(width: leftImage.size.width * 2, height: leftImage.size.height) UIGraphicsBeginImageContextWithOptions(size, true, 1.0) leftImage.draw(in: CGRect(x: 0, y: 0, width: leftImage.size.width, height: leftImage.size.height)) rightImage.draw(in: CGRect(x: leftImage.size.width, y: 0, width: rightImage.size.width, height: rightImage.size.height)) let mergedImage = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() return mergedImage } // not sure if this actually works func extractSpatialImage(at index: Int) -> CIImage? { guard let cgImage = CGImageSourceCreateImageAtIndex(self, index, nil) else { return nil } var ciImage = CIImage(cgImage: cgImage) if let properties = CGImageSourceCopyPropertiesAtIndex(self, index, nil) as? [String: Any], let heifDictionary = properties[kCGImagePropertyHEIFDictionary as String] as? [String: Any], let extrinsics = heifDictionary[kIIOMetadata_CameraExtrinsicsKey as String] as? [String: Any], let position = extrinsics[kIIOCameraExtrinsics_Position as String] as? [Double] { // Default baseline is 64mm (0 for left camera, 0.064m for right camera) let standardBaseline = 0.064 // Check if it's the right image (should be at [0.064, 0, 0]) let isRightImage = (index == 1) let expectedPosition = isRightImage ? standardBaseline : 0.0 // Calculate the translation needed to align to standard baseline let positionDelta = position[0] - expectedPosition // Apply translation only if there's a mismatch in position if positionDelta != 0 { let transform = CGAffineTransform(translationX: CGFloat(positionDelta), y: 0) ciImage = ciImage.transformed(by: transform) } } return ciImage } }

I'm setting: .immersionStyle(selection: .constant(.progressive(0.1...1.0, initialAmount: 0.1)), in: .progressive(0.1...1.0, initialAmount: 0.1)) In UnityVisionOSSettings.swift before build out in Xcode. I'm having an issue where this only works on occasion. Seems random. I'll either get no immersion level available (crown dial is greyed out and no changes can be made) or it will only allow 0.5 - 1.0 immersion (dial will go below 0.5 but springs back to 0.5 when released). With no changes to my setup or how I'm setting immersionStyle I've been able to get this to work as I would expect. Wondering if there is some bug that would be causing this to fail. I've tested a simple NativeSDK progressive immersion style with same code for custom setting and it works everytime, so it's something related to Unity. Here is the entire UnityVisionOSSettings that, from as far as I can tell, are controlling this: `// GENERATED BY BUILD import Foundation import SwiftUI import PolySpatialRealityKit import UnityFramework let unityStartInBatchMode = false extension UnityPolySpatialApp { func initialWindowName() -> String { return "Unbounded" } func getAllAvailableWindows() -> [String] { return ["Bounded-0.500x0.500x0.500", "Unbounded"] } func getAvailableWindowsForMatch() -> [simd_float3] { return [] } func displayProviderParameters() -> DisplayProviderParameters { return .init( framebufferWidth: 1830, framebufferHeight: 1600, leftEyePose: .init(position: .init(x: 0, y: 0, z: 0), rotation: .init(x: 0, y: 0, z: 0, w: 1)), rightEyePose: .init(position: .init(x: 0, y: 0, z: 0), rotation: .init(x: 0, y: 0, z: 0, w: 1)), leftProjectionHalfAngles: .init(left: -1, right: 1, top: 1, bottom: -1), rightProjectionHalfAngles: .init(left: -1, right: 1, top: 1, bottom: -1) ) } @SceneBuilder var mainScenePart0: some Scene { ImmersiveSpace(id: "Unbounded", for: UUID.self) { uuid in PolySpatialContentViewWrapper(minSize: .init(1.000, 1.000, 1.000), maxSize: .init(1.000, 1.000, 1.000)) .environment(\.pslWindow, PolySpatialWindow(uuid.wrappedValue, "Unbounded", .init(1.000, 1.000, 1.000))) .onImmersionChange() { oldContext, newContext in PolySpatialWindowManagerAccess.onImmersionChange(oldContext.amount, newContext.amount) } KeyboardTextField().frame(width: 0, height: 0).modifier(LifeCycleHandlerModifier()) } defaultValue: { UUID() } .upperLimbVisibility(.automatic) .immersionStyle(selection: .constant(.progressive(0.1...1.0, initialAmount: 0.1)), in: .progressive(0.1...1.0, initialAmount: 0.1)) WindowGroup(id: "Bounded-0.500x0.500x0.500", for: UUID.self) { uuid in PolySpatialContentViewWrapper(minSize: .init(0.100, 0.100, 0.100), maxSize: .init(0.500, 0.500, 0.500)) .environment(\.pslWindow, PolySpatialWindow(uuid.wrappedValue, "Bounded-0.500x0.500x0.500", .init(0.500, 0.500, 0.500))) KeyboardTextField().frame(width: 0, height: 0).modifier(LifeCycleHandlerModifier()) } defaultValue: { UUID() } .windowStyle(.volumetric).defaultSize(width: 0.500, height: 0.500, depth: 0.500, in: .meters).windowResizability(.contentSize) .upperLimbVisibility(.automatic) .volumeWorldAlignment(.gravityAligned) } @SceneBuilder var mainScene: some Scene { mainScenePart0 } struct LifeCycleHandlerModifier: ViewModifier { func body(content: Content) -> some View { content .onOpenURL(perform: { url in UnityLibrary.instance?.setAbsoluteUrl(url.absoluteString) }) } } }`

Hi, One of the great features introduced in WWDC24 is the Translation API. But unfortunately it's currently unavailable on visionOS. My question is, does Apple have any plan to support it on visionOS as well? If so, what's the ETA for this feature? I would really like to see it on visionOS, otherwise I'll have to pay Google to use their translation API.

Hi, When opening an ImmersiveSpace with the .mixed style, is it possible to keep the user's current selected system immersive environment? Currently, the system immersive environment will be dismissed. ImmersiveSpace(id: "some id") { SomeRealityView() } .immersionStyle(selection: .constant(.mixed), in: .mixed)