SwiftUI List performance

We have a very strange issue that I am trying to solve or find the best practice for. We have a SwiftUI View that uses the Camera to preview. So as suggested in Apples Docs we check authorisation status and then if it's not determined we request authorisation. We also have the privacy entry in the info.plist case .notDetermined: AVCaptureDevice.requestAccess(for: .video) { accessStatusAuthorised in if !accessStatusAuthorised { self.cameraStatus = .notAuthorised } else { self.isAuthorized = true self.cameraStatus = .authorised self.startCameraSession(cameraPosition: cameraPosition) } } case .restricted: cameraStatus = .notAuthorised isAuthorized = false case .denied: cameraStatus = .notAuthorised isAuthorized = false case .authorized: cameraStatus = .authorised isAuthorized = true startCameraSession(cameraPosition: cameraPosition) break @unknown default: isAuthorized = true cameraStatus = .notAuthorised } However when we call this code it freezes the Camera feed, even when allow has been tapped. Howev

I'm working on a watchOS app using SwiftUI that updates its UI based on regular, time-driven logic. On a real Apple Watch, after the app has been running for ~1 minute, the device enters Always-On / power-saving display mode (screen dimmed, wrist down). From that point on, SwiftUI UI updates become noticeably delayed. The underlying logic continues to run correctly, but the UI only redraws sporadically and often catches up once the screen becomes fully active again. The app is running in workout mode, which keeps it alive and maintains WatchConnectivity, but this does not prevent UI redraw throttling. Below is a minimal reproducible example that demonstrates the issue. PlaybackModel.swift import SwiftUI @MainActor final class PlaybackModel: ObservableObject { @Published var beat: Int = 0 private var timer: Timer? func start() { timer?.invalidate() timer = Timer.scheduledTimer(withTimeInterval: 0.5, repeats: true) { _ in Task { @MainActor in self.beat += 1 } } } func stop() { timer?.

Are there tools to inspect why a drag-and-drop drop is not triggering in a SwiftUI app? I've declared .draggable on the dragging view, and .dropDestination on the receiving TabContent Tab view. This combination of modifiers is working on a smaller demo app that I have, but not on my more complex one. Is there a means to debug this in SwiftUI? I'd like to see if the drag-and-drop pasteboard actually has what I think it should have on it. Notably: TabContent has a far more restricted list of modifiers that can be used on it.

I was wondering what the recommended way is to persist user settings with SwiftData? It seems the SwiftData API is focused around querying for multiple objects, but what if you just want one UserSettings object that is persisted across devices say for example to store the user's age or sorting preferences. Do we just create one object and then query for it or is there a better way of doing this? Right now I am just creating: import SwiftData @Model final class UserSettings { var age: Int = 0 var sortAtoZ: Bool = true init(age: Int = 0, sortAtoZ: Bool = true) { self.age = age self.sortAtoZ = sortAtoZ } } In my view I am doing as follows: import SwiftUI import SwiftData struct SettingsView: View { @Environment(.modelContext) var context @Query var settings: [UserSettings] var body: some View { ForEach(settings) { setting in let bSetting = Bindable(setting) Toggle(Sort A-Z, isOn: bSetting.sortAtoZ) TextField(Age, value: bSetting.age, format: .number) } .onAppear { if settings.isEmpty { context.insert(Us

I'm experiencing a contradictory validation issue with DeviceActivityReportExtension that creates an impossible situation: The Problem: Without NSExtensionPrincipalClass in Info.plist → App Store Connect rejects upload with: Missing Info.plist values. No values for NSExtensionMainStoryboard or NSExtensionPrincipalClass found With NSExtensionPrincipalClass → Local install fails with: defines either an NSExtensionMainStoryboard or NSExtensionPrincipalClass key, which is not allowed for the extension point com.apple.deviceactivityui.report-extension Setup: Extension point: com.apple.deviceactivityui.report-extension Using SwiftUI with @main attribute and DeviceActivityReportExtension protocol Xcode 16.2, iOS 17.6 deployment target Code structure: @main struct SpoolReport: DeviceActivityReportExtension { var body: some DeviceActivityReportScene { // Report scenes here } } The extension builds and runs perfectly without NSExtensionPrincipalClass, but cannot be uploaded to App Store Connect. Adding the key

When I have a TextField or TextEditor, tapping into it produces these two console entries about 18 times each: CHHapticPattern.mm:487 +[CHHapticPattern patternForKey:error:]: Failed to read pattern library data: Error Domain=NSCocoaErrorDomain Code=260 The file “hapticpatternlibrary.plist” couldn’t be opened because there is no such file. UserInfo={NSFilePath=/Library/Audio/Tunings/Generic/Haptics/Library/hapticpatternlibrary.plist, NSURL=file:///Library/Audio/Tunings/Generic/Haptics/Library/hapticpatternlibrary.plist, NSUnderlyingError=0x600000ca1b30 {Error Domain=NSPOSIXErrorDomain Code=2 No such file or directory}} <_UIKBFeedbackGenerator: 0x600003505290>: Error creating CHHapticPattern: Error Domain=NSCocoaErrorDomain Code=260 The file “hapticpatternlibrary.plist” couldn’t be opened because there is no such file. UserInfo={NSFilePath=/Library/Audio/Tunings/Generic/Haptics/Library/hapticpatternlibrary.plist, NSURL=file:///Library/Audio/Tunings/Generic/Haptics/Library/hapticpatternlibrary.plist, NSUnd

The new .searchToolbarBehavior(.minimized) modifier leads to a choppy animation both on device and SwiftUI canvas (iOS 26.2): I assume this is not the intended behaviour (reported under FB21572657), but since I almost never receive any feedback to my reports, I wanted to see also here, whether you experience the same, or perhaps I use the modifier incorrectly? struct SwiftUIView: View { @State var isSearchPresented: Bool = false @State var searchQuery: String = var body: some View { TabView { Tab { NavigationStack { ScrollView { Text(isSearchPresented.description) } .navigationTitle(Test) } .searchable(text: $searchQuery, isPresented: $isSearchPresented) .searchToolbarBehavior(.minimize) // **Choppy animation comes from here?** } label: { Label(Test, systemImage: calendar) } Tab { Text(123) } label: { Label(123, systemImage: globe) } } } } #Preview { if #available(iOS 26, *) { SwiftUIView() } else { // Fallback on earlier versions } }