Why does the bit rate of MV-HEVC videos recorded by iPhone double? Is there some depth information hidden in MV-HEVC?

I'd love to play around with DockKit, but I didn't see anything mentioned about hardware. I'm assuming Apple isn't releasing their own motorized dock and haven't seen anything about how to get hardware recognized by the accessory manager. I'd like to prototype a dock myself using esp32 and some stepper motors. I've already got this working with bluetooth communication from iOS via CoreBluetooth, but I don't know if there's specific service and characteristic UUIDs that the system is looking for to say it's compatible with DockKit? Would really love to start playing with this, anyone got any insights on how to get up and running?

Anyone able to see how to use the new SwiftUI Map and WWDC @Observable concept to dynamically update my SwiftUI Map position and rotation based on the dynamic changes it picks up from my @Observable object. Note the updates are coming through as the Text labels show this. But how to get the Map position referencing the same values and updating them? The "onAppear" approach doesn't seem to work. import SwiftUI import MapKit @Observable final class NewLocationManager : NSObject, CLLocationManagerDelegate { var location: CLLocation? = nil var direction: CLLocationDirection = 0 private let locationManager = CLLocationManager() func startCurrentLocationUpdates() async throws { if locationManager.authorizationStatus == .notDetermined { locationManager.requestWhenInUseAuthorization() } for try await locationUpdate in CLLocationUpdate.liveUpdates() { guard let location = locationUpdate.location else { return } print("NewLocationManager: \(location.coordinate.latitude), \(location.coordinate.longitude)") self.location = location self.direction = self.direction + 1 } } } struct ContentView: View { var locationMgr = NewLocationManager() @State private var mapCamPos: MapCameraPosition = .automatic private let bigBen = CLLocationCoordinate2D(latitude: 51.500685, longitude: -0.124570) var body: some View { ZStack { Map(position: $mapCamPos) .onAppear { // Does NOT work - how to get position/direction updates working to Map (map should be moving/rotating) mapCamPos = .camera(MapCamera( centerCoordinate: self.locationMgr.location?.coordinate ?? bigBen, distance: 800, heading: self.locationMgr.direction )) } VStack (alignment: .leading) { Text("Location from observable: \(locationMgr.location?.description ?? "NIL")") // This works (they get updates regularly) Text("Direction from observable: \(locationMgr.direction)") // This works (they get updates regularly) Spacer() } } .task { try? await locationMgr.startCurrentLocationUpdates() } } } #Preview { ContentView() } Tag: wwdc2023-10043

WWDC23 Platform State of the Union mentioned that Volume shutter buttons to trigger the camera shutter is coming later this year. This was mentioned at 0:30:15. Would anyone know when this will be available?

It appears that for a successful registration of a passkey to a relying party using passkey autofill provider, the BE BS bits/flags in the attestation response need to be set to true. Please refer FLAGS byte of authData field part of attestationObject mentioned here - https://www.w3.org/TR/webauthn-2/#sctn-attestation. If those flags are set to false, the RP rejects saying - "The operation either timed out or was not allowed. See: https://www.w3.org/TR/webauthn-2/#sctn-privacy-considerations-client." What are the implications of having those flags set to true? Does it make the generated passkey syncable across devices using same apple id? If yes, is there at all anyway possible by which a generated passkey can be made device bound, basically can be generated and used only on a single iPhone/iOS device? Also, is there a plan to ever make those flags to be set to false in a future iOS release? Also, what does it mean in the credential provider popup where it says - "Available where is installed." in the below screenshot?

I've been trying to reproduce the example used in the WWDC 23 Presentation "Explore Pit Charts and Interactivity in SwiftCharts" where a popover annotation is set on top of the chart and vertical; RuleMark. However when doing so the annotation doesn't appear at all. I worked around that issue by setting: y: .fit(to: .chart) in the init of the overflowResolution, like: .annotation(position: .top, spacing: 0, overflowResolution: .init(x: .fit(to: .chart), y: .fit(to: .chart))) Probably a SwiftUI bug given this API is only a few months old. If anyone has been able to reproduce that example let me know!

Hello Apple Community, I've been delving into the realm of time-based activation predicates through DDM. In my recent pursuits, I've been experimenting with the device's local time to evaluate a predicate expression and apply activation configurations. Is it possible to achieve this? Our DDM currently leverages device status items and server management properties to activate predicates. These predicates come to life when the logic becomes true, initiating activations seamlessly. While the Apple Predicate Guide provides a solid foundation, I've encountered some challenges when it comes to time-based expressions. The guide covers basics such as context and numerical-based predicates, but I find myself seeking more clarity on implementing time-based logic effectively. If any of you have insights, tips, or experiences to share regarding time-based activation predicates expressions in declarative device management, your input would be immensely valuable. I'm particularly interested in understanding practical approaches and gaining a deeper comprehension of the nuances involved. Thank you in advance.

Hi there, I have watched the keynote of WWDC23 and like to have technical information on how to implement Filling forms for iPad OS using PDFKIT into our App. I have reviewed PDFKit API documentation, but there are no any documentation about how to use that technology and no any changes to API. Thanks, Eduard

I have developed an interactive widget which looks as the following It is using CoreData. The view is implemented as the following struct widget_extensionEntryView : View { var body: some View { if let nsTodoList = nsTodoList { VStack(alignment: .leading, spacing: 1) { ... ForEach(0..<prefixGoodNSTodoArray.count, id: \.self) { index in ... let todoIntent = TodoIntent(objectIDAsString: objectIDAsString, parentOrder: parentOrder) Button(intent: todoIntent) { } } } } } } The AppIntent is implemented as the following import Foundation import AppIntents import WidgetKit import CoreData struct TodoIntent: AppIntent { static var title: LocalizedStringResource = "Complete Task" static var description: IntentDescription = IntentDescription("Complete selected task") @Parameter(title: "objectIDAsString") var objectIDAsString: String @Parameter(title: "parentOrder") var parentOrder: Int init() { } init(objectIDAsString: String, parentOrder: Int) { self.objectIDAsString = objectIDAsString self.parentOrder = parentOrder } func perform() async throws -> some IntentResult { guard let objectID = NSManagedObjectID.from(objectIDAsString) else { return .result() } guard let nsTodoList = NSTodoListRepository.INSTANCE.getNSTodoList(objectID) else { return .result() } nsTodoList.toggleChecked(context: CoreDataStack.INSTANCE.viewContext, parentOrder: Int64(parentOrder)) RepositoryUtils.saveContextIfPossible(CoreDataStack.INSTANCE.viewContext) TodoWidgetOptions.isWrittenByWidgetExtension = true // Refresh all home widgets. // TODO: https://developer.apple.com/forums/thread/721937 WidgetCenter.shared.reloadAllTimelines() return .result() } } The interactive widget works pretty well. However, tapping on the widget has no response in the following situations: After an overnight, we turn on the iPhone's screen and tap on the widget. After a few hours of idle time, we turn on the iPhone's screen and tap on the widget. One of the steps below will make the widget workable again: Launch and close the main app again. The main app will call WidgetCenter.shared.reloadAllTimelines() during sceneDidEnterBackground. Press and hold on the widget, choose 'Edit widget', and select the desired Todo list. One thing to take note of is that I am using IntentTimelineProvider instead of AppIntentTimelineProvider. The reason I am using 'older tech' is due to the limitation mentioned in https://developer.apple.com/forums/thread/741053 However, I am not sure whether this is the root cause of the problem. Does anyone have any idea why such a problem occurs? Thanks.

I provide a website, which can be added to Home screen. Does Apple support dynamic widgets that can be added to Home screen for web apps? Also, can these widgets be updated by setting update frequency as described on Apple page: https://developer.apple.com/design/human-interface-guidelines/widgets ?

I have to turn off closed captions for every video in the WWDC catalogue. How can i set all videos CC to be off by default?

Related to this post. In my chat view, each time I load new page (items are added from top), the ScrollView jumps to top instead of maintaining scrollPosition. Here is my scroll view: GeometryReader { geometryProxy in ScrollView(showsIndicators: false) { VStack(spacing: 0) { if viewModel.isLoading { LoadingFooter() } messagesView .frame(minHeight: geometryProxy.size.height - loadingFooterHeight - bottomContentMargins, alignment: .bottom) } } .scrollDismissesKeyboard(.interactively) .defaultScrollAnchor(.bottom) .scrollPosition(id: $scrolledId, anchor: .top) .contentMargins(.bottom, bottomContentMargins, for: .scrollContent) .onChange(of: scrolledId, scrollViewDidScroll) } And this is the messages view @ViewBuilder var messagesView: some View { LazyVStack(spacing: 0) { ForEach(sectionedMessages) { section in Section(header: sectionHeaderView(title: section.id)) { ForEach(section, id: \.id) { message in MessageView(message: message) .padding(.horizontal, .padding16) .padding(.bottom, .padding8) .id(message.id) } } } .scrollTargetLayout() } } Printing the scrolledId after a page load, I can see it hasn't changed, but the ScrollView position does.

I'm experiencing an issue trying to install the 'mirroringworkoutssample' app from the official Apple documentation on my Apple Watch. When attempting a direct installation from the Apple Watch, I receive an error stating, "Cannot install this app due to an inability to verify its integrity." Has anyone else encountered this problem or can provide any solutions or insights? ** I have a 'Development' type certificate that allows for watchOS(it includes iOS, tvOS ..) development. ** also added WKCompanionAppBundleIdentifier com.example.apple-samplecode.MirroringWorkoutsSample7C76V3X7AB.watchkitapp

Hi, I am getting a linking error when building my app to run against an iOS17 device, using Xcode15. Same project builds and runs fine with Xcode 14 and iOS16. The linking error just says: clang: error: unable to execute command: Segmentation fault: 11 clang: error: linker command failed due to signal (use -v to see invocation) Not sure what I should try to overcome this. I can't run my app on an iOS17 device. It builds, links and runs just fine on a simulator.

Is it possible to use an iPhone running iOS 17 with Xcode 14.3.1? I tried to use the old method but nothing. In Xcode 15 inside DeviceSupport folder there isn't the folder of iOS 17.

Related to this StackOverflow post (not mine). In my chat view: ScrollView(showsIndicators: false) { messagesView } .safeAreaInset(edge: .bottom) { composerView } .scrollDismissesKeyboard(.interactively) Using interactively keyboard dismissing won't change the safe area size interactively causing a weird UI glitch like you can see in the post up above. The keyboard and composer play nice when I use it as tool bar, But I want my composer to always be visible (obviously), I've tried to play with FocusState to change the composer parent: .toolbar { ToolbarItem(placement: $isFocused ? .keyboard : .bottomBar) { bottomView } } But not only it redraws the view each time, it will also make the view lose its focus state, affectively releasing the keyboard. Plus it feels kind of a hack. What is the right way to make the composer move with the keyboard interactively and stay on screen while the keyboard is gone, like in iMessages?

I attempted to utilize the Background Assets feature for an iOS app. While debugging, I employed the following command to trigger the installation event: xcrun backgroundassets-debug -b <bundleID> -s --app-install -d <Device ID> This command worked flawlessly on an iPhone. However, when I attempted to trigger the installation event on a Mac, I encountered the following error message: The requested device to send simulation events to is not available. Verify that the device is connected to this Mac. Please note that the xcrun backgroundassets-debug -l command only displays a list of connected devices.Mac is not listed in that list.