I've updated my computer to Sequoia 15, Xcode 16 and now no matter what I do, I am unable to work with Swift UI previews. I get this error each time I try to run the preview: Failed to launch app in reasonable time I have done: Uninstall/Re-install Xcode Deleted derived data Deleted the simulator data Used DevCleaner to remove all data related to Xcode Searched all websites about this issue. ( Non shown a good solution ) Write this question on here. If anyone has found a solution, please let me know how you fixed it.

I am developing an app that uses CoreBluetooth to communicate with a proprietary piece of hardware. I would like to be able to write tests for it, but there does not seem to be any way to mock or simulate the presence of, for example a CBPeripheral object. This library (https://github.com/NordicSemiconductor/IOS-CoreBluetooth-Mock) almost does what I need, but it's not quite flexible enough. I think they have the right idea, but it doesn't seem to be actively maintained anymore. This seems like a pretty big hole in the iOS SDK. Is there really not an officially supported way of testing BLE functionality?

Comments are not displayed correctly in Xcode 16. As you can see on the included screenshot, the first /// are displayed correctly but the remaining ////////////////////////// are super small. In a programming text editor, like Xcode, all characters MUST be monospaced. Otherwise it is impossible to code. Xcode is not supposed to be a word processor. There are no parameters to fix that. It was working fine for the past 15 years on Xcode. Please fix that so I can work again. And never do that ever again. Understood?

I am using TXLiteAVSDK_Player package dependencies and now when I want to archive and distribute an app I get this two warnings : Upload Symbols Failed The archive did not include a dSYM for the TXFFmpeg.framework with the UUIDs [1xxxxxx]. Ensure that the archive's dSYM folder includes a DWARF file for TXFFmpeg.framework with the expected UUIDs. Upload Symbols Failed The archive did not include a dSYM for the TXSoundTouch.framework with the UUIDs [Axxxx]. Ensure that the archive's dSYM folder includes a DWARF file for TXSoundTouch.framework with the expected UUIDs. My system is macOS sonoma 14.5 and Xcode is 16.0. How can I eliminate this warning?

Error message: Previous preparation error: The developer disk image could not be mounted on this device.; Error mounting image: 0xe800010f (kAMDMobileImageMounterPersonalizedBundleMissingVariantError: The bundle image is missing the requested variant for this device.) I had no issues previously with my iPhone 13 Pro running iOS 18 and my XCode 15. Now, after switching to the iPhone 16 Pro, it won't work. I've tried restarting my phone several times, quitting XCode, removing and readding developer mode—nothing quite works.

I just created a new project in the newest version of Xcode as a sample project for a feedback. Bug 1 So simply what I do in every new project is create a "Supporting Files" group (not a folder because I don't want to move these files on the file system). I put the following files in this group: .entitlements file -the Info.plist (which apparently new projects don't create anymore because I don't see one). main.m Assets.xcassets In previous version of Xcode this was done with the "New Group without Folder" action (though back in the day I believe you'd get yellow folders in "New Group" and blue folder with 'New Folder" and they were separate actions.... which was actually better and much less insane IMO but that's not really important to this). In any case, "New Group without Folder" is nowhere to be found in the context menu. I finally was able to get "New Group" to appear as long as I wasn't right clicking underneath any directory. But.... New Group actually creates a New Folder, just like New Folder. So I put the .entitlements in the Supporting Files group (which is not a group, but a directory) and the app won't compile unless I fix the path in project settings because I moved the file which is most definitely not what I wanted. So we can no longer group files in the project navigator without moving them to new directories? Is this intentional behavior? It can't be, right? Bug 2 I noticed dragging and dropping to reorder files in the project navigator no longer seems to work? In previous versions of Xcode I could drag and drop to reorder files (in groups and in folders, this would work). This appears to no longer work. I just have to accept the way Xcode orders my project files?

Hi, I recently updated to Xcode 16. Since then I successfully built my app and sent an update to the App Store. But suddenly, after an exception I've experienced while working on my code, the app is crashing on launch, without showing the stack trace, and showing only one warning in the console: warning: (arm64) /Users/myuser/Library/Developer/Xcode/DerivedData/myapp-bglvscamatwthwbfqmtzmbvxeewc/Build/Products/Debug-iphonesimulator/myapp.app/MyApp empty dSYM file detected, dSYM was created with an executable with no debug info. Tried deleting derived data Erasing all simulator data Reseting my computer No change yet. Any idea what am I missing? Thank you..

Hello. In the Xcode 15 we were using this command in the terminal to run our tests on the Rosetta Simulator: xcodebuild -workspace CoreLibraries.xcworkspace -scheme CoreLibraries -destination 'platform=iOS Simulator,name=iPhone 15,arch=x86_64' test` In the Xcode 16 the same command doesn't work anymore. It produces the error: xcodebuild: error: Unable to find a device matching the provided destination specifier: { platform:iOS Simulator, arch:x86_64, OS:latest, name:iPhone 16 } Unsupported device specifier option. The device “iPhone 16” does not support the following options: arch Please supply only supported device specifier options. Running test directly from the Xcode UI using iPhone 16 (Rosetta) still works fine. Does anyone know how to modify the xcodebuild command to make it work again?

There is a significant regression in Xcode 16.0 and 16.1 (16B5014f) in that it no longer allows asset files other than .SCN files to be added to a .scnasset group and folder. This really wrecks our ability to maintain our app since we heavily depend on additional assets like .USDZ, .JPEG, .PNG, etc. files to be able to be included in the group for on-demand resource tagging and loading. I filed FB15239224 but I'm wondering if this is intentional and if anyone knows of a workaround.

I am using the latest version of Xcode 16, and I have created a GPX file in my project. However, I am unable to see or select the file to simulate the GPS location. I have attempted to uninstall and reinstall Xcode completely, but the issue persists. Has anyone encountered a similar problem? How can I resolve this? Thank you.

Hi, I work on a iOS application which includes several local swift packages containing modularised code. Each of those local swift packages has a test target defined in their respective Package.swift, and when opening a local package folder standalone in Xcode, then the tests run without issues. However I would like in the main app's test plan to add the local package test targets and have them all run together when the main app's default test plan is run. Xcode allows me to select local package test targets within the main app's test plan (also within Test portion of the main app's scheme), however attempting to build for testing throws a "Module '…' was not compiled for testing". Any ideas on how to achieve this goal (run local package tests in conjunction with main app's tests) and avoid that error? Thanks Peter

Since upgrading to Xcode 16, I've noticed that when I add new files to my local Swift packages, the "Update Package" option is no longer available when I right-click on my local package. In previous versions of Xcode, I used this feature to make Xcode recognize newly added files without any issues. Now, with Xcode 16, the only way I've found to get Xcode to recognize new files is to remove and re-add the entire package, which is obviously not ideal. I've tried cleaning the build folder and rebuilding the project, but it doesn't seem to help. Is there a new workflow or method in Xcode 16 to refresh or update local Swift packages without needing to remove and re-add them every time? Any suggestions or workarounds would be greatly appreciated! What I’ve tried so far: Cleaning and rebuilding the project Looking for any options under "File > Packages" menu Environment: Xcode 16 Local Swift Package Thanks in advance!

I am able to setup and schedule a background refresh task as well as manually trigger it via Xcode and the simulator tied to my iPhone 11 Pro test phone using the e -l objc -- (void)[[BGTaskScheduler sharedScheduler] _simulateLaunchForTaskWithIdentifier: However, it won't execute on the app on it's own. And yes, the pinfo.list entries are correct and match! I know the scheduler is not exact on timing but it's just not executing on its own. Since I can trigger manually it I'm pretty sure the code is good but I must be missing something. I created an observable object for this code and the relevant parts look like this: class BackgroundTaskHandler: ObservableObject { static let shared = BackgroundTaskHandler() var taskState: BackgroundTaskState = .idle let backgroundAppRefreshTask = "com.opexnetworks.templateapp.shell.V1.appRefreshTask" func registerBackgroundTask() { BGTaskScheduler.shared.register(forTaskWithIdentifier: backgroundAppRefreshTask, using: nil) { task in self.handleAppRefresh(task: task as! BGAppRefreshTask) } self.updateTaskState(to: .idle, logMessage: "✅ Background app refresh task '\(backgroundAppRefreshTask)' registered.") BGTaskScheduler.shared.register(forTaskWithIdentifier: backgroundTaskIdentifier, using: nil) { task in self.handleProcessingTask(task: task as! BGProcessingTask) } self.updateTaskState(to: .idle, logMessage: "✅ Background task identifier '\(backgroundTaskIdentifier)' registered.") } // Handle the app refresh task private func handleAppRefresh(task: BGAppRefreshTask) { self.updateTaskState(to: .running, logMessage: "🔥 app refresh task is now running.") PostNotification.sendNotification(title: "Task Running", body: "App refresh task is now running.") let queue = OperationQueue() queue.maxConcurrentOperationCount = 1 let operation = BlockOperation { self.doSomeShortTaskWork() } task.expirationHandler = { self.updateTaskState(to: .expired, logMessage: "💀 App refresh task expired before completion.") PostNotification.sendNotification(title: "Task Expired", body: "App refresh task expired before completion \(self.formattedDate(Date())).") operation.cancel() } operation.completionBlock = { if !operation.isCancelled { self.taskState = .completed } task.setTaskCompleted(success: !operation.isCancelled) let completionDate = Date() UserDefaults.standard.set(completionDate, forKey: "LastBackgroundTaskCompletionDate") self.updateTaskState(to: .completed, logMessage: "🏁 App refresh task completed at \(self.formattedDate(completionDate)).") PostNotification.sendNotification(title: "Task Completed", body: "App refresh task completed at: \(completionDate)") self.scheduleAppRefresh() // Schedule the next one } queue.addOperation(operation) } func scheduleAppRefresh() { // Check for any pending task requests BGTaskScheduler.shared.getPendingTaskRequests { taskRequests in let refreshTaskIdentifier = self.backgroundAppRefreshTask let refreshTaskAlreadyScheduled = taskRequests.contains { $0.identifier == refreshTaskIdentifier } if refreshTaskAlreadyScheduled { self.updateTaskState(to: .pending, logMessage: "⚠️ App refresh task '\(refreshTaskIdentifier)' is already pending.") // Iterate over pending requests to get details for taskRequest in taskRequests where taskRequest.identifier == refreshTaskIdentifier { let earliestBeginDate: String if let date = taskRequest.earliestBeginDate { earliestBeginDate = self.formattedDate(date) } else { earliestBeginDate = "never" } self.updateTaskState(to: .pending, logMessage: "⚠️ Pending Task: \(taskRequest.identifier), Earliest Begin Date: \(earliestBeginDate)") } // Optionally, show a warning message to the user in your app PostNotification.sendNotification(title: "Pending Tasks", body: "App refresh task is already pending. Task scheduling cancelled.") return } else { // No pending app refresh task, so schedule a new one let request = BGAppRefreshTaskRequest(identifier: refreshTaskIdentifier) request.earliestBeginDate = Date(timeIntervalSinceNow: 15 * 60) // Earliest in 15 minutes do { try BGTaskScheduler.shared.submit(request) self.taskState = .scheduled self.updateTaskState(to: .scheduled, logMessage: "✅ App refresh task '\(refreshTaskIdentifier)' successfully scheduled for about 15 minutes later.") PostNotification.sendNotification(title: "Task Scheduled", body: "App refresh task has been scheduled to run in about 15 minutes.") } catch { print("Could not schedule app refresh: \(error)") self.taskState = .failed self.updateTaskState(to: .failed, logMessage: "❌ Failed to schedule app refresh task.") } } } } // Short task work simulation private func doSomeShortTaskWork() { print("Doing some short task work...") // Simulate a short background task (e.g., fetching new data from server) sleep(5) print("Short task work completed.") } In my AppDelegate I trigger the registerBackground task in the didFinishLaunchingWithOptions here: BackgroundTaskHandler.shared.registerBackgroundTask() And I scheduled it here in the launch view under a task when visible: .task { BackgroundTaskHandler.shared.scheduleAppRefresh() } I've also tried the last in the AppDelegate after registering. either way the task schedules but never executes.

So I have a MacOS application that was working just fine before Xcode 16. The Widgets are not working anymore. The main application and the widgets share a file in a common App Group. The widget app now get a permission error when accessing the file. Also, the Widget Kit simulator keeps crashing. I also try to start a new project in Xcode, add a target with a Widget extension with an App Intent and run it, and it also crashes. Sometimes, it doesn't crash but just display the error: "Failed to load widget. The operation couldn't be completed. (WidgetKit_Simulator.WidgetDocument.Error error 2.). Edited to attach WidgetKit error log widgetKitError.txt

I installed xcode 16 and both Predictive Code Completion Model and iOS 18.0 Simulator Failed Download. I can live without the code completion, but I can not get any Simulator to install. I clicked of the info button and it shows the following: Download failed. Domain: DVTDownloadableErrorDomain Code: 41 User Info: { DVTErrorCreationDateKey = "2024-09-30 15:57:24 +0000"; } Download failed. Domain: DVTDownloadableErrorDomain Code: 41 Failed fetching catalog for assetType (com.apple.MobileAsset.iOSSimulatorRuntime), serverParameters ({ RequestedBuild = 22A3351; }) Domain: DVTDownloadsUtilitiesErrorDomain Code: -1 Download failed as the server said authentication failed. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime) Domain: com.apple.MobileAssetError.Download Code: 41 User Info: { checkServer = 1; } System Information macOS Version 15.0 (Build 24A335) Xcode 16.0 (23051) (Build 16A242d) Timestamp: 2024-09-30T10:57:24-05:00

Hi. I created a Message Filter Extension target to filter spam sms messages, deferring the request to my backend. The extension makes the call and send this payload: POST /server-endpoint HTTP/1.1 Accept: */* Content-Type: application/json; charset=utf-8 Content-Length: 148 { "_version": 1, "query": { "sender": "14085550001", "message": { "text": "This is a message" } }, "app": { "version": "1.1" } } My question is, is possible modify this payload to send the "receiver" number (is possible get the receiver number in this extension?), or use an identifier, to let my backend know which user number the filter was applied to. I think is impossible because the extension makes the call and create the payload, and I don't see anything in docs to add other prop, but there's other way to know the "receiver" number of the sms? Thanks:)

I’ve developed an Apple Watch extension for an existing iOS app. When I run the app on the watch via Xcode using the simulator, everything works fine. However, when I try to install it on my iPhone, the Watch app doesn’t show it in the "Available Apps" list, so I can't install it on the watch. The Apple Watch is connected to my iPhone, and I can see other apps available for installation without any issues. I also created a brand new project with watchOS support to troubleshoot, but the same problem occurred. Any ideas on how to resolve this?

I’ve noticed a strange bug in Xcode 16 and Swift. When a preview is rendering and hasn’t finished yet and you run an app to debug, Xcode is launching two instances of the app. Has anyone else noticed this issue? If you let the preview finish rendering before running the app, this doesn’t happen. Very odd.

Hi everyone, I recently upgraded my Xcode to version 16, and since then, I’ve encountered some issues with Visual Studio 2022 for Mac. The iOS simulators have disappeared, except for the generic simulator. When I connect my iPhone via USB, Visual Studio recognizes it, but when I attempt to run my project in debug mode, I receive a status message saying "waiting for debugger to connect to iPhone on port 10000 via USB." After a few minutes, this process fails. Additionally, when I try to run the project in release mode, I encounter the following error: dlopen(/Applications/Xcode.app/Contents/SharedFrameworks/IDEDistribution.framework/Versions/A/IDEDistribution, 0x0001): Library not loaded: @rpath/AppThinning.framework/Versions/A/AppThinning Referenced from: <33FF2F3B-A96F-37B4-BA4E-887BD882BF9D> /Applications/Xcode.app/Contents/SharedFrameworks/IDEDistribution.framework/Versions/A/IDEDistribution Reason: tried: '/Library/Frameworks/Xamarin.iOS.framework/Versions/16.4.0.23/lib/mlaunch/mlaunch.app/Contents/Frameworks/AppThinning.framework/Versions/A/AppThinning' (no such file), '/Applications/Xcode.app/Contents/SharedFrameworks/IDEDistribution.framework/Versions/A/Frameworks/AppThinning.framework/Versions/A/AppThinning' (no such file), '/Library/Frameworks/Xamarin.iOS.framework/Versions/16.4.0.23/lib/mlaunch/mlaunch.app/Contents/Frameworks/AppThinning.framework/Versions/A/AppThinning' (no such file), '/Applications/Xcode.app/Contents/SharedFrameworks/IDEDistribution.framework/Versions/A/Frameworks/AppThinning.framework/Versions/A/AppThinning' (no such file), '/Library/Frameworks/Xamarin.iOS.framework/Versions/16.4.0.23/lib/mlaunch/mlaunch.app/Contents/MonoBundle/AppThinning.framework/Versions/A/AppThinning' (no such file) I suspect that the new version of Xcode may not be fully compatible with Visual Studio 2022. Unfortunately, I cannot roll back to an older version of Xcode because I have updated my macOS to Sequoia (15.0.1), which appears to be incompatible with previous Xcode versions. It is quite frustrating as I can't debug my projects and my works are stalled. Does anyone have any suggestions or solutions to this problem? Thank you in advance for your assistance!

until previous version of the Xcode, I can see the backtrace of view by edit scheme -> Diagnostics -> Logging -> check Malloc Stack and select All Allocation and Free History` but the option just gone in Xcode 16.