I made a box with MDLMesh.newBox(). I added normals. let mdlMesh = MDLMesh.newBox(withDimensions: SIMD3<Float>(1, 1, 1), segments: SIMD3<UInt32>(2, 2, 2), geometryType: MDLGeometryType.triangles, inwardNormals:false, allocator: allocator) mdlMesh.addNormals(withAttributeNamed: MDLVertexAttributeNormal, creaseThreshold: 0.25) After I convert to MTKMesh the normals are (0,0,0) for a group of vertices. I can only inspect the geometry after I convert to MTKMesh. Is there a way you can use Geometry Viewer on a MDLMesh?

I have an iOS app, and I am trying to add a companion WatchOS app. My iOS app depends on 2 libraries: GoogleMobileAds FirebaseAnalyticsWithoutAdIdSupport When I add a new target for WatchOS, the preview build starts to fail. I am not adding any libraries to WatchOS. The Google Ads and Firebase Analytics libs are only under the iOS target. I am unable to run the preview, I get an error when trying to build the watch scheme. The preview does not work. The build just crashes. I've included the error log below. But, here are the steps I've tried so far: Delete folders inside Derived Data Run a clean build (Cmd + Option + Shift + K) Delete scheme and create a new one Reset Package Cache Restart Xcode Restart Macbook But, it just does not work. I do not understand why the watchOS target is erroring for "GoogleUserMessagingPlatform" and "GoogleMobileAdsTarget" when those packages are not linked/used for the watchOS. SchemeBuildError: Failed to build the scheme “timerWatch Watch App” While building for watchOS Simulator, no library for this platform was found in '/Users/k/Library/Developer/Xcode/DerivedData/timer-dhkdhvfcqtfgskfdxpmupujswtuh/SourcePackages/artifacts/swift-package-manager-google-user-messaging-platform/UserMessagingPlatform/UserMessagingPlatform.xcframework'. (in target 'UserMessagingPlatformTarget' from project 'GoogleUserMessagingPlatform') Build target UserMessagingPlatformTarget: /Users/k/Library/Developer/Xcode/DerivedData/timer-dhkdhvfcqtfgskfdxpmupujswtuh/SourcePackages/artifacts/swift-package-manager-google-user-messaging-platform/UserMessagingPlatform/UserMessagingPlatform.xcframework:1:1: error: While building for watchOS Simulator, no library for this platform was found in '/Users/k/Library/Developer/Xcode/DerivedData/timer-dhkdhvfcqtfgskfdxpmupujswtuh/SourcePackages/artifacts/swift-package-manager-google-user-messaging-platform/UserMessagingPlatform/UserMessagingPlatform.xcframework'. (in target 'UserMessagingPlatformTarget' from project 'GoogleUserMessagingPlatform') Build target GoogleMobileAdsTarget: /Users/k/Library/Developer/Xcode/DerivedData/timer-dhkdhvfcqtfgskfdxpmupujswtuh/SourcePackages/artifacts/swift-package-manager-google-mobile-ads/GoogleMobileAds/GoogleMobileAds.xcframework:1:1: error: While building for watchOS Simulator, no library for this platform was found in '/Users/k/Library/Developer/Xcode/DerivedData/timer-dhkdhvfcqtfgskfdxpmupujswtuh/SourcePackages/artifacts/swift-package-manager-google-mobile-ads/GoogleMobileAds/GoogleMobileAds.xcframework'. (in target 'GoogleMobileAdsTarget' from project 'GoogleMobileAds')

Hi, I am getting an error stating "Argument passed to call that takes no arguments". I want this Apple Watch App to measure and store RR Intervals from the PPG sensor on the Apple Watch for Heart Rate Variability calculations. Please help me fix this, I can't figure it out. Here is my code: heartbeatQuery = HKHeartbeatSeriesQuery(predicate: predicate, dataReceivedHandler: { (query, timeSinceLastBeat, ended, error) in // Switch to main thread for UI updates DispatchQueue.main.async { if let error = error { print("Heartbeat query error: (error.localizedDescription)") self.fetchErrorMessage = "Heartbeat query error: (error.localizedDescription)" // Consider stopping the workout session if the query fails critically // self.stopWorkoutSession() return } if ended { print("Heartbeat query indicates series ended.") } // Append valid RR intervals if timeSinceLastBeat > 0 { self.rrIntervals.append(timeSinceLastBeat) self.beatCount += 1 } } // End DispatchQueue.main.async }) // End query data handler // --- END OF PROBLEMATIC INITIALIZER --- // Execute the query if it was created successfully It recommends the fix as removing this part: '(predicate: predicate, dataReceivedHandler: { (query, timeSinceLastBeat, ended, error) in // Switch to main thread for UI updates DispatchQueue.main.async { if let error = error { print("Heartbeat query error: (error.localizedDescription)") self.fetchErrorMessage = "Heartbeat query error: (error.localizedDescription)" // Consider stopping the workout session if the query fails critically // self.stopWorkoutSession() return } if ended { print("Heartbeat query indicates series ended.") } // Append valid RR intervals if timeSinceLastBeat > 0 { self.rrIntervals.append(timeSinceLastBeat) self.beatCount += 1 } } // End DispatchQueue.main.async })' But after I remove that it says "Cannot assign value of type 'HKHeartbeatSeriesQuery.Type' to type 'HKHeartbeatSeriesQuery'" PLEASE HELP ME Thanks

I’m using Developer iOS app to watch WWDC session videos. i notice it doesn’t record a video as watched after I watched it and even manual marking it using Mark as Watch has no effect. I remember the issue started several years ago because some old WWDC videos were marked watches.

I don't know Xcode very well, and had been using it sporadically to test a project exported from Unity. I recently added a StoreKit Configuration to the project, and since then it gives me ≈10s after launching before the beach ball appears, and it never leaves. Xcode says it is "Indexing" but I don't know if that's an obvious culprit. I can still build my project via the fastlane tool, on the command line, and the newly-added StoreKit configuration works just fine. But I cannot use Xcode interactively any more, unless I re-export the project from Unity. The only difference between it working and hanging is the Store Kit configuration. How do I understand what's going on, and (ideally) fix it? The Activity Monitor gives a bunch of backtraces that don't have an obvious network or I/O culprit in them.

Hi, I compiled Intel Open Image Denoise library for iOS, and obtained a bunch of dependent dylibs. I want to use these ones in a swift project (via bridging as this is C/C++) targeting the iPad. I understand that it is required to embed these dylibs into frameworks as iOS doesn't allow dylib. Is it necessary to generate one framework for each dylib? If so, how are dependencies between the libraries (and their frameworks) managed? Or, is it possible to generate only one framework embeding all the dependencies?

Hi Support Team, I am new here. I am unable to add my fonts to the asset catalog there is no option to add new font set when I click the plus sign. When I drag my files in they show up as data. I have a Contents.json in the font folder called BeVietnamProFont.font. Is there something I am doing wrong? Thanks SO much! { "info": { "version": 1, "author": "xcode" }, "properties": {}, "fonts": [ { "filename": "BeVietnamPro-Black.ttf", "weight": "black", "style": "normal" }, { "filename": "BeVietnamPro-BlackItalic.ttf", "weight": "black", "style": "italic" }, { "filename": "BeVietnamPro-Bold.ttf", "weight": "bold", "style": "normal" }, { "filename": "BeVietnamPro-BoldItalic.ttf", "weight": "bold", "style": "italic" }, { "filename": "BeVietnamPro-ExtraBold.ttf", "weight": "heavy", "style": "normal" }, { "filename": "BeVietnamPro-ExtraBoldItalic.ttf", "weight": "heavy", "style": "italic" }, { "filename": "BeVietnamPro-ExtraLight.ttf", "weight": "ultralight", "style": "normal" }, { "filename": "BeVietnamPro-ExtraLightItalic.ttf", "weight": "ultralight", "style": "italic" }, { "filename": "BeVietnamPro-Light.ttf", "weight": "light", "style": "normal" }, { "filename": "BeVietnamPro-LightItalic.ttf", "weight": "light", "style": "italic" }, { "filename": "BeVietnamPro-Regular.ttf", "weight": "regular", "style": "normal" }, { "filename": "BeVietnamPro-Italic.ttf", "weight": "regular", "style": "italic" }, { "filename": "BeVietnamPro-Medium.ttf", "weight": "medium", "style": "normal" }, { "filename": "BeVietnamPro-MediumItalic.ttf", "weight": "medium", "style": "italic" }, { "filename": "BeVietnamPro-SemiBold.ttf", "weight": "semibold", "style": "normal" }, { "filename": "BeVietnamPro-SemiBoldItalic.ttf", "weight": "semibold", "style": "italic" }, { "filename": "BeVietnamPro-Thin.ttf", "weight": "thin", "style": "normal" }, { "filename": "BeVietnamPro-ThinItalic.ttf", "weight": "thin", "style": "italic" } ] } ![]("https://developer.apple.com/forums/content/attachment/56835f04-d1c1-468f-808b-9a786562d367" "title=Screenshot 2025-07-13 at 1.05.05 PM.png ;width=539;height=630")

Experimenting with #Playground macro with Xcode 26 beta 3, out of the box I see a conflict between duplicates in the XcodeDefault Toolchain. Essentially a clean install of macOS Tahoe 26 25A5306g FB18930059 Was trying to follow the first Foundation Model WWDC video example but distilling it down to the most basic use of the Playground macro produces the same error. import Playgrounds #Playground { } Any solutions / workarounds? Wasn't sure whether to attempt to delete one of these–but they are internal libraries. objc[3241]: Class PGLConcurrentMapNode is implemented in both /Applications/Xcode-beta 3.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/Developer/Platforms/MacOSX.platform/Developer/Library/PrivateFrameworks/PlaygroundLogger.framework/Versions/A/PlaygroundLogger (0x10db98c10) and /Applications/Xcode-beta 3.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx/libLiveExecutionResultsLogger.dylib (0x10db18050). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed. error: Couldn't look up symbols: protocol descriptor for Playgrounds.__PlaygroundsContentRecordContainer```

Hello All, I see an issue while running the Notification content Extension on simulator without checking the "Copy only when installing in app target -> Build Phases -> Embed App Extensions" If I check "Copy only when installing in app target" then only it is working. Can someone please confirm if Notification Content Extension is working on simulator. If yes how can we do that. Please share the details

Hi everyone, We're developing an AR app using Unity with Vuforia for object detection. Our app works well in full-screen mode, including detection and post-detection phases. However, we're facing a specific issue in iPad Split View multitasking mode. Problem: The AR camera (Vuforia-based) freezes during object detection if another app is opened in Split View. Post-detection, everything works fine in Split View. The problem only occurs during detection. Testing Environment: iPadOS 16+ Unity with Vuforia plugin Using EnableMultitaskingCameraAccess() method with AVFoundation to support camera multitasking AR scene is set up properly with detection capabilities in full-screen

In the availability and pricing section, we have reviewed the plans and we will be upgrading to 50 or 100 million calls/month but before we do, we have a couple questions. Does the API have rate limit or throttling? Do you have additional weather forecast endpoints like hail, radar, or pollen forecast? I see in this thread https://developer.apple.com/forums/thread/795642 that air quality is not available Thanks

Hey guys! I downloaded Apple’s Icon Composer to build my iOS 26 app icon. I exported my SVG from Illustrator (and verified it through Canva and the W3C validator). However, when I import it into Icon Composer, it looks really weird . There are these bubble-like artifacts appearing in the center. Here's my orignal svg icon file trace-logo.txt Any help will be appreciated! Best, Justin

For the Linux version of my application which is written in C++ using Qt, I display the CHM format help files with this code: QString helpFile{ QCoreApplication::applicationDirPath() + "/Help/" + tr("DeepSkyStacker Help.chm","IDS_HELPFILE") }; QString program{ "kchmviewer" }; QStringList arguments{ "-token", "com.github.deepskystacker", helpFile }; helpProcess->startDetached(program, arguments); (helpProcess is a pointer to a QProcess object) The -token com.github.deepskystackerpart of that ensures that only a single instance of the viewer is used for any code that uses that invocation. Are there any chm file viewers for macOS that are capable of that sort of trick? The ones I've found on the App Store give minimal information and appear to be very simple minded tools that are not not intended for integration into an application as above. I know that MacPorts offers ports of kchmviewer but I'd prefer not to use either that or HomeBrew ... David

When you try to reset settings through the Apple Vision Pro simulator (VisionOS 2.4) you get an error "Preferences quit unexpectedly". Bug report: FB17666053

Our business is to scan the code to open App Clip, but then App Clip will appear in App Library and Siri Suggestions. This can be opened quickly, but the URL of the last scan will be included. This will cause a problem, for example: if the previous scan was code A, but the user does not scan code B when going to place B and directly opens it through App Library or Siri Suggestions, the code I get is still code A, so the result I want is that I want to know where it was opened from, and then if it is opened quickly, I will clear the URL and remind the user to scan the code again. Or if it is opened by quick opening, do not include the URL

Hi Experts, Could you please help. Issue at high level: After Editing a View contains a Table entries, saved and hit back button to display View, Table entries are duplicated or displaying previous and current entries together. Here is my Issue in detailed. List view display, clicking on any row, would navigate to DisplayView of a record. I am displaying a table in DisplayView. DisplayView contains "row" as parameter, and it must be initialized in "init" method, where I use row.key and fetch another table (say ColorTab) using Color.Key. DisplayView contains "NavigationView", with Edit button. it displays fetched Colors. example Red and Green. when user click on Edit, it takes to EditPage. user can remove / add colors. Once user made changes, saved and hit back button. Table entries are duplicated or showing previous and current entries. Options tried, a) init method is only triggering 1st time, not triggering when back button clicked, I failed to use FetchRequest outside of init method, I tried on OnAppear too. i didn't trigger. b) Failed to use FetchRequest inside of var Body too. c) tried using viewContext.refreshAllObjects() .. it is not refreshing the table. Could you please help if there is solution for the issue. Thanks, Bhanu

I have a couple apps in one git repository. I'd like to have a Swift package in that repo as well, shared by apps. In other words, I don't want a separate repo for the Swift package. I followed the instructions here: https://developer.apple.com/documentation/xcode/organizing-your-code-with-local-packages It seems to work. I can write code like this in my app: import MyLocalPackage func foo() { myLocalPackageFunc() } I notice that the package is not listed under Project > MyApp > Package Dependencies. I don't really care, as long as I can reuse code between apps. But when I try to add this package code to a 2nd app, I'm at a loss. I tried "Add Package Dependencies" and "Add Local", but that creates a different looking setup than the 1st app. The code is browsable in the project navigator. And when I try to build it says "Missing package product 'MyLocalPackage'. The documentation linked above, which I used for the 1st app, does a "New > Package". I don't want a new package. How can I connect the existing one?

My app uses the top navigation panel which contains the back button, a title, and prompt. On an actual device, the navigation area is light and shows all three items. On the simulator, the navigation area is black and only the back button is shown. I need this to be correct for app store screen shots.

In the online documentation for InstallerJS, it is stated that the unit for the availableKilobytes property of the target field is kilobytes. Isn't it actually bytes because of a bug in the very first release of macOS that supported InstallerJS? [Q] Has there been a fix in the recent years regarding this property that would explain why the documentation says it's kilobytes? Even though at the time of this writing, the unit is still bytes when you call my.target.availableKilobytes I'm using this call to dump the value of this property in install.log: system.log(my.target.availableKilobytes + ''); Ref. https://developer.apple.com/documentation/installer_js/target/1811975-availablekilobytes (FB20448952)

Hello We use Datadog Mobile Vitals in our app and I'm trying to run some tools in Instruments for comparison. I'm not sure what tool should I use for some of those metrics: Slow Renders Description: With slow renders data, you can monitor which views are taking longer than 16ms or 60Hz to render. Instruments equivalent: Hangs including microhangs (?) CPU ticks per second Description: RUM tracks CPU ticks per second for each view and the CPU utilization over the course of a session. The recommended range is <40 for good and <80 for moderate. Instruments equivalent: CPU Profiler (?) Frozen Frames - Description: Frames that take longer than 700ms to render appear as stuck and unresponsive in your application. These are classified as frozen frames. Instruments equivalent: Hangs with > 500ms (?) Memory Utilization Description: The amount of physical memory used by your application in bytes for each view, over the course of a session. The recommended range is <200MB for good and <400MB for moderate. Instruments equivalent: Allocation (?)