I'm getting literally hundreds and hundreds of these lines appearing in the Xcode console when running the app. What's the cause? Too much logging? (if so this didn't used to appear with earlier version of Xcode, I'm currently running Xcode 16.2) How to do this: "set IDELogRedirectionPolicy to oslogToStdio in the environment of the executable." And what does doing that do? <snip> 1 log/signpost messages lost due to high rates in live mode recording. To guarantee delivery of all logs, set IDELogRedirectionPolicy to oslogToStdio in the environment of the executable. 1 log/signpost messages lost due to high rates in live mode recording. To guarantee delivery of all logs, set IDELogRedirectionPolicy to oslogToStdio in the environment of the executable. <snip>

I've got an app with several app extensions (call extension, action extension, notification service extension, message filtering extension, notification content extension). If I need to interactively debug these then I can select the scheme and run the extension within Xcode for all of them except for the notification content extension, with that I get an error dialog summary saying: Failed to install the app on the device / The provided item to be installed is not of a type that CoreDevice recognizes. Which when expanded has the blumpf posted below. Why can I not run the notification content extension, when I can run any other type of app extension? Failed to install the app on the device. Domain: com.apple.dt.CoreDeviceError Code: 3002 Failure Reason: The provided item to be installed is not of a type that CoreDevice recognizes. User Info: { DVTErrorCreationDateKey = "2024-12-27 16:39:54 +0000"; IDERunOperationFailingWorker = IDEInstallCoreDeviceWorker; NSURL = "file:///Users/Me/Library/Developer/Xcode/DerivedData/XFinity-celiagrvtevxcagztrguseawvjkl/Build/Products/Debug.Ceq.QA-iphoneos/NotificationContentExtension.appex"; } -- Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "00008101-00115D623460001E"; "device_isCoreDevice" = 1; "device_model" = "iPhone13,3"; "device_osBuild" = "18.2 (22C152)"; "device_platform" = "com.apple.platform.iphoneos"; "device_thinningType" = "iPhone13,3"; "dvt_coredevice_version" = "397.28"; "dvt_coresimulator_version" = "993.7"; "dvt_mobiledevice_version" = "1759.40.2.100.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 7; "operation_errorCode" = 3002; "operation_errorDomain" = "com.apple.dt.CoreDeviceError"; "operation_errorWorker" = IDEInstallCoreDeviceWorker; "operation_name" = IDERunOperationWorkerGroup; "param_debugger_attachToExtensions" = 0; "param_debugger_attachToXPC" = 1; "param_debugger_type" = 1; "param_destination_isProxy" = 0; "param_destination_platform" = "com.apple.platform.iphoneos"; "param_diag_113575882_enable" = 0; "param_diag_MainThreadChecker_stopOnIssue" = 0; "param_diag_MallocStackLogging_enableDuringAttach" = 0; "param_diag_MallocStackLogging_enableForXPC" = 1; "param_diag_allowLocationSimulation" = 0; "param_diag_checker_tpc_enable" = 1; "param_diag_gpu_frameCapture_enable" = 0; "param_diag_gpu_shaderValidation_enable" = 0; "param_diag_gpu_validation_enable" = 0; "param_diag_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 0; "param_diag_queueDebugging_enable" = 1; "param_diag_runtimeProfile_generate" = 0; "param_diag_sanitizer_asan_enable" = 0; "param_diag_sanitizer_tsan_enable" = 0; "param_diag_sanitizer_tsan_stopOnIssue" = 0; "param_diag_sanitizer_ubsan_enable" = 0; "param_diag_sanitizer_ubsan_stopOnIssue" = 0; "param_diag_showNonLocalizedStrings" = 0; "param_diag_viewDebugging_enabled" = 1; "param_diag_viewDebugging_insertDylibOnLaunch" = 1; "param_install_style" = 2; "param_launcher_UID" = 2; "param_launcher_allowDeviceSensorReplayData" = 0; "param_launcher_kind" = 0; "param_launcher_style" = 0; "param_launcher_substyle" = 2; "param_runnable_appExtensionHostRunMode" = 0; "param_runnable_productType" = "com.apple.product-type.app-extension"; "param_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphoneos18.2"; "sdk_osVersion" = "18.2"; "sdk_variant" = iphoneos; } -- System Information macOS Version 14.7 (Build 23H124) Xcode 16.2 (23507) (Build 16C5032a) Timestamp: 2024-12-27T08:39:54-08:00

I've noticed issues with logging in the Mac's console app for a very long time now (from Xcode 15?) but have just spent several hours trying to objectively observe and monitor what's going on and try to set up reliable logging. But I've totally been unable to and my conclusion is that logging just absolutely cannot be relied upon at all, its so chronically bad as to be unusable. If I for example add some logging lines right at the start of didFinishLaunchingWithOptions() and use a variety of logging mechanisms NSLog(), print(),os_log_with_type(), OSLog() (AppDelegate is in Obj-C and calls Obj-C logging, then calls a swift function for Swift logging), then none of them are reliable. If the app is build/installed via Xcode then logging is reliable within Xcode's console and also within the Mac's console app. But then if the app is uploaded/installed via Testflight it's a very different matter. Sometimes, but not very often, the logging is as expected, but more often than not, some of it is missing. How much is missing seems totally random, sometimes its a little, sometimes its a lot, and something else that very very often happens is there's lots of duplicate logging, each logging line will appear 2 or three times. Here's a very simple example to illustrate what happens (in this example for simplicity I'm just showing using NSLog, don't focus on that as I know NSLog is "old", its the exact same result regardless of how the logging is actually performed). - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { appDelegate = self; NSLog(@"Log line 1"); NSLog(@"Log line 2"); NSLog(@"Log line 3"); NSLog(@"Log line 4"); NSLog(@"Log line 5"); When the app is downloaded from Testflight then only very rarely will I see 5 lines of logging, sometimes it'll be 4, sometimes 2, sometimes none. And quite often the logging is duplicated i.e. I might see for example in the Console app: Log line 1 Log line 1 Log line 2 Log line 2 Log line 3 Log line 3 In general it's just totally unusable and unreliable. It just cannot be be used at all. Why is it this bad? What can be done to make logging reliable and useful? I've spent days and days reading the recommended approaches, trying things out, including the new stuff like OSLog etc. But it remains dreadful. What is the recommended approach to make logging 100% reliable? There's never any problem with Xcode's console, it's only with the Mac's console app. However, when an app is being tested which has been installed from Testflight then using Xcode's console can't be used. So If a QA team find problems with a Testflight build and attach the Console log its utterly useless as its contents are effectively random.

I want to set the minimum deployment to 16.0, however Xcode (16.2) won't let me select that. In the drop down box it shows 18,17,16,15, however if any of these is selected it sets them as 18.6, 17.6, 16.6 or 15.6 (see image) If an attempt is made to edit the value manually, to 16.0, then after change it, Xcode just deletes that value and sets it to nothing. What's going on here? Why is Xcode only allowing the version other than be something.6 and why will it not let you manually edit it?

I've got an existing app which is using some 3rd party xcframeworks within its app extensions (for example within a Notification Service Extension). Within the target for the app extensions there is a Frameworks and Libraries section where the xcframework was dragged and dropped into. However now I want to create a new project and do a similar thing, within the app's target there is a Frameworks and Libraries section, but when an app extension target is created, Xcode is not adding a Frameworks and Libraries section. There is a Link Library with Binary section, however this doesn't have an embed section (where you can select to embed, don't embed, embed without signing etc.) and I get build error trying to drag and drop the xcframework in here. Where id the Framewoks and Libraries section go for app extensions for projects created with Xcode 16? How can this section be added?

If an iOS app gets terminated by watchdog due to, for example, hanging the main thread, is that considered to be a crash or something different. I'm asking because, according to google and AI, Crashlytics can detect and report these,but in my experience it does not. If I deliberately cause a watchdog termination by for example sleeping on the main thread for a long time then these never appear in Crashlytics. I know Apple folks here don't comment on non Apple software, so I'm not asking about Crashlytics, just wondering and interested about watchdog timeout terminations and how they differ from a "regular" crash.

In Xcode I've: select Product / Scheme / Edit scheme tap on Archive on the left hand side of the select post actions and + to add a new script Then in there I have added a script I want to run on the archive after its created. I'd like to be able to see the output the script churns out as it goes along but doesn't seem possible? If I just add something like echo "hello" to the start of the script then I don't see "hello" visible anywhere when I build an archive (via Product/Archive). I'm looking in the build navigator. Is there somewhere else to look or is it possible to get the logging into the navigator?

If I create an Xcode (version doesn't matter, 16.N )project of type framework then install some dependencies using SPM. Then within the Frameworks and Libraries section, the Embed part is empty. This doesn't happen if the project type is app rather than framework. If I want to set this to embed or not embed then how can this be done if its not even visible, for that matter how can I tell what it is set to even?

I've got several Xcode iOS projects and in the Editor menu section there are dozen's of options, as in the diagram. However if I create a new iOX Project (with Xcode 16.2) look at how sparse the Editor menu is. Why is that, why do they appear for other projects but not for a new one and why are the contents different?

If an Xcode project has some compiler flags set in Build Phases / Compile Sources, then is it possible to have those enabled if scheme A is selected and disabled if scheme B is selected. Same question for things in Build Settings, such as Other Compiler Flags. I suppose it could be achieved by having two targets, one with things enabled and one without, but for a very large complex project, duplicating targets is not necessarily an easy thing to do.

The iOS documentation shows notification actions buttons with the text center aligned: https://developer.apple.com/documentation/usernotifications/declaring-your-actionable-notification-types But there's no apparent way for an app to control this. The buttons are controlled and rendered by the system and the text is always left aligned. Is there some way to get the text center aligned?

Trying to add some release test notes to a TestFlight build - but after clicking the blue save button nothing happens, nothing is saved. I tried with two different browsers and two different Apple accounts, same thing with both. Anybody else experiencing this issue?

If there is a Notification Service Extension which has the com.apple.developer.usernotifications.filtering entitlement, then does/how having that entitlement affect the preconditions for the NSE to be delivered a push? Specifically, if the app has not prompted for requestAuthorization() is it expected that the push will be delivered to the NSE or not? Thank you

How can experimentation and testing calling the AgeRangeService.shared.requestAgeRange() functionality be recreated easily? The very first time I ran this the OS popped up a dialog, however it won't do so again, even after the app is deleted and the device re-started. If one navigates to Settings/User/Personal Information/Age Range for Apps/Apps that have requested your age range appear here. Then the names of apps appear here even after the app has been deleted. Therefore how can it be removed from this section? Erasing and resetting the phone will presumably reset things back to a state such that the dialog can be presented again. But doing that and having to wait for that to complete each development or test run is impractical. Is there an alternative?

On this page: https://developer.apple.com/documentation/storekit/testing-age-assurance-in-sandbox It says: Start with a Sandbox account. What is a Sandbox account and how does one set one up? Just it just simply mean an Apple account id used for testing, or something else?