I have a CollectionView in my SwiftUI App. The collectionView is wrapped in a UIViewRepresentable. If I tap on a collectionView cell normally the function isn't called but if I hold the cell down the console prints <0x107507790> Gesture: System gesture gate timed out. and when I let go of the cell after that's printed then didSelectItem is called. Here is my CollectionView Class: class SessionsCollectionView: UIView, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout { lazy var collectionView: UICollectionView = { let layout = UICollectionViewFlowLayout() layout.minimumInteritemSpacing = 0 layout.minimumLineSpacing = 30 let collectionView = UICollectionView(frame: CGRect.zero, collectionViewLayout: layout) collectionView.translatesAutoresizingMaskIntoConstraints = false collectionView.dataSource = self collectionView.delegate = self collectionView.clipsToBounds = false collectionView.delaysContentTouches = false collectionView.register(SessionCell.self, forCellWithReuseIdentifier: "cell") collectionView.register(SessionsHeader.self, forSupplementaryViewOfKind: UICollectionView.elementKindSectionHeader, withReuseIdentifier: "header") return collectionView }() override init(frame: CGRect) { super.init(frame: frame) self.backgroundColor = .clear setupCollectionView() } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } private func setupCollectionView() { addSubview(collectionView) collectionView.backgroundColor = .clear collectionView.alwaysBounceVertical = true collectionView.alwaysBounceHorizontal = false collectionView.delaysContentTouches = false collectionView.contentInset = .init(top: 20, left: 0, bottom: 20, right: 0) collectionView.showsVerticalScrollIndicator = false NSLayoutConstraint.activate([ collectionView.topAnchor.constraint(equalTo: topAnchor), collectionView.leadingAnchor.constraint(equalTo: leadingAnchor), collectionView.trailingAnchor.constraint(equalTo: trailingAnchor), collectionView.bottomAnchor.constraint(equalTo: bottomAnchor) ]) } // MARK: Header func collectionView(_ collectionView: UICollectionView, viewForSupplementaryElementOfKind kind: String, at indexPath: IndexPath) -> UICollectionReusableView { if kind == UICollectionView.elementKindSectionHeader { let sectionHeader = collectionView.dequeueReusableSupplementaryView(ofKind: kind, withReuseIdentifier: "header", for: indexPath) as! Header return sectionHeader } } func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, referenceSizeForHeaderInSection section: Int) -> CGSize { let width: CGFloat = collectionView.frame.width let height: CGFloat = 33 + 20 return CGSize(width: width, height: height) } // MARK: - UICollectionViewDataSource func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int { return 10 } func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! SessionCell return cell } // MARK: - UICollectionViewDelegateFlowLayout func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize { let width = collectionView.bounds.width let height = 150 return CGSize(width: collectionView.bounds.width, height: height) } func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) { print(indexPath.row) } } struct SessionsCollectionViewWrapper: UIViewRepresentable { var sessionViewNavigation: SessionViewNavigation func makeUIView(context: Context) -> SessionsCollectionView { let sessionsCollectionView = SessionsCollectionView() return sessionsCollectionView } func updateUIView(_ uiView: SessionsCollectionView, context: Context) { // Update any properties or handle updates if needed } }

In my app user accounts are handled with Firebase Auth. When creating a user how can I get the system to suggest a Unique password (that prompt that comes up on the keyboard) and also how can i get it to save these details to the keychain. My app will have a website in the future so I want the details come up when the user tries to login there. When the user logs in i used the func below to save the details to the keychain, it says the details have been saved but it doesnt seem to come up in the passwords tab in Settings. func saveCredentialsToKeychain(email: String, password: String) { let query: [String: Any] = [ kSecClass as String: kSecClassInternetPassword, kSecAttrServer as String: "myWebsite.com", kSecAttrAccount as String: email, kSecValueData as String: password.data(using: .utf8)!, kSecAttrAccessible as String: kSecAttrAccessibleWhenUnlocked ] let status = SecItemAdd(query as CFDictionary, nil) if status == errSecSuccess { print("Credentials saved to Keychain") } else { print("Error saving credentials to Keychain: \(status)") } }

I have an ARSCNView with nodes in AR. The UI guides you in scaling an object and the images captured are used to create a 3D model. When I try take a picture using arView.snapshot() it basically takes a screenshot a the resolution is the screen resolution and the nodes are visible. I also noticed that the AR View displays a lower quality output than the camera app. If I try get a separate camera output with AVFoundation then the arView doesn't get an output and vive versa, it only allows one view to access the camera. Is it possible to get a full resolution image without the nodes visible from the AR View (if I hide them, capture the image and display them again they do flicker) or is it possible to have 2 camera streams one to the arView and the other used to solely capture images (this one does not need to visible on screen)

I'm looking to get a GPU to use for Object capture. The requirements are an AMD GPU with 4GB of VRAM and ray tracing support, the rx 580 seems to be able to do ray tracing from what I've found online but looks like someone had an issue with a 580X here https://developer.apple.com/forums/thread/689891

In my view controller I have a collection view and over that there is a scroll view (covering the whole main view). The collection view acts as a sort of "header" to the scroll view and has images in it. The scrollview has a clear view at the top the same size as the collection view to make the collection view visible through the scrollview - collectionViewTouchView. This is done so I can create a parallax effect when scrolling. The problem is that I can't swipe on the collection view because the scrollview is over it. Can I somehow record touch events on collectionViewTouchView and then pass it directly to the collection view?

I removed a pod from my project and when I went to commit I got a whole list of the deleted files marked with exclamation marks saying they're "missing". I've cleaned the build folder, deleted derived data etc but these still keep coming up.

I’m trying to add a search filter UI like the one used in the Music app. I’ve tried to add a reusable view to the search controller collection view but there seems to be padding around it. My plan was just to add a Collection View there and try recreate the animation used. I tried scope buttons but those are a segment control, so they only hold a few options.

In my collection view I have an image with some text below. I have a height constraint for the image view so the image aspect ratio can be adjusted (cells are the width of the screen). I set the constraint constant in cellForItemAt. The cell heights only resize correctly after I scroll. CollectionViewController     override func viewDidLoad(_ animated: Bool) {         super.viewDidLoad(animated)         let layout = collectionView.collectionViewLayout         if let flowLayout = layout as? UICollectionViewFlowLayout {             flowLayout.estimatedItemSize = CGSize(width: collectionView.widestCellWidth, height: 800)         }     }     override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {         let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! selectCell         cell.setupView() // Image resolution is already downloaded         let gsReference = storage.reference(forURL: thumbnail.storageLocation)         cell.imageView.sd_setImage(with: gsReference, placeholderImage: nil)         cell.layoutIfNeeded()         cell.layoutSubviews()         return cell     } selectCell.swift     override func systemLayoutSizeFitting(_ targetSize: CGSize, withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority, verticalFittingPriority: UILayoutPriority) -> CGSize {         var targetSize = targetSize         targetSize.height = CGFloat.greatestFiniteMagnitude         let size = super.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: .required, verticalFittingPriority: .fittingSizeLevel)         return size     }     func setupView() { // Changing the labels size the cell correctly when first loaded             titleLbl.text = ""             descriptionLbl.text = ""                          let imageAspectRatio = CGFloat(metadata.thumbnail.width) / CGFloat(metadata.thumbnail.height)             let imageViewHeight = containerView.frame.width / imageAspectRatio             imageViewHeightConstraint.constant = imageViewHeight             self.contentView.setNeedsLayout()             self.contentView.layoutIfNeeded()     }

I want to add a small banner to my AR model when viewed in QuickLook in my app. I haven't been able to find much information on this however I found this resource where it explains how to add it when you have a model on a website. My model is locally stored on the device so how would I add this?

How do I overlay an annotation/detail popup to AR Models in QuickLook? This was done with the WWDC Trading Cards AR Model. I haven't been able to find any other info on this. Here is an article which has an image of what I am referring to https://vrscout.com/news/apple-shows-off-ar-trading-cards-ahead-of-wwdc-2022/

I'm trying to recreate the watchOS App Store layout however there are a few parts I am not how to recreate. When scrolling an Elliptical Style List the cells will "snap" up if you are scrolling slowly. This effect works well with regular size cells with just a line of text but makes the List scrolling seem a glitchy when the cells are taller. In the App Store app this "snap" effect is not there. When scrolling there is still a visible "Elliptical Scroll Style" but this effect is missing for the "See All" cells which scroll as if it were a "Plain Style List". How would you create this effect? Also when using a Plain Style List and you scroll to the very top or bottom you get a "heavy" haptic feedback which is absent on Elliptical Style Lists. The App Store app still has this "heavy" haptic feedback when you get to the top or bottom yet it uses an Elliptical List style (or at least something in between as explained above.)

I have a basic List made in SwiftUI. When I scroll with the Digital Crown I get the "light haptics" however when I get to the top or bottom of the list I don't get the more pronounced dent. Update - If I use a plain list style then I get the haptics as expected. However it should work with the elliptical style as this is used in the system. The console outputs the following 2022-05-19 23:32:53.782614+0200 WatchApp WatchKit Extension[326:41020] [default] Error: Error Domain=NSOSStatusErrorDomain Code=-536870187 "(null)" 2022-05-19 23:32:53.783181+0200 WatchApp WatchKit Extension[326:41020] [detents] could not play detent NO, 2, Error Domain=NSOSStatusErrorDomain Code=-536870187 "(null)", (         {         Gain = "0.01799999922513962";         OutputType = 0;         SlotIndex = 4;     },         {         Gain = "0.4900000095367432";         OutputType = 1;         SlotIndex = 5;     } ) Here is my code struct ContentView: View {     var body: some View {             List {                                  ForEach(0..<100) { i in                                         NavigationLink(destination: FeedView()) {                         Text("Hello")                     }                 }                              }.navigationTitle("Title")         } }

I have a collectionView inside my UIKit view controller using UIViewControllerRepresentable (App is SwiftUI). How can I segue to another view when a cell is tapped. Usually I’d just segue from didSelectCellAt but how can I create a SwiftUI NavigationLink from there? (I will be switching to another Viewcontroller)

I subclassed UISlider and changed the track width (and nothing else) and as you move the slider to the end the last bit of the track appears before the thumb has been moved to the end and there is no radius on the end. If the thumb is at the start you have to move the thumb quite a bit before the track starts to highlight.

How do you set the size of an area light in sceneKit?         let areaLightNode = SCNNode()         areaLightNode.light = SCNLight()         areaLightNode.light!.type = .area                  areaLightNode.position = SCNVector3(x: 0, y: 5, z: 0)         areaLightNode.light?.intensity = 1000 Nothing appears when using the above