“Visual Studio Maui IOS”

Hi team: I recently update to Xcode 26.4, and I encountered crash when running to < iOS 26.4 both for physical device and Simulator with this log: dyld[1257]: Symbol not found: _$s9MetricKit10mxSignpost_3dso3log4name10signpostID__ySo03os_H7_type_ta_SVSo03OS_j1_F0Cs12StaticStringV0J0010OSSignpostI0VALSays7CVarArg_pGtF Referenced from: <164CCEB0-E1F8-3CE2-A934-2096C19C0A9A> /private/var/containers/Bundle/Application/EA709A68-F76F-4D97-85C6-B71D61D68389/xxx.app/xxx.debug.dylib Expected in: <9E5EC9BB-5828-329C-A2BC-038B67060298> /System/Library/Frameworks/MetricKit.framework/MetricKit Symbol not found: _$s9MetricKit10mxSignpost_3dso3log4name10signpostID__ySo03os_H7_type_ta_SVSo03OS_j1_F0Cs12StaticStringV0J0010OSSignpostI0VALSays7CVarArg_pGtF Referenced from: <164CCEB0-E1F8-3CE2-A934-2096C19C0A9A>x /private/var/containers/Bundle/Application/EA709A68-F76F-4D97-85C6-B71D61D68389/xxx.app/xxx.debug.dylib Expected in: <9E5EC9BB-5828-329C-A2BC-038B67060298> /System/Library/Frameworks/

I'm experiencing an issue where the App Group shared container appears to be recreated (with a new creation date) during an app update, resulting in complete loss of locally stored data. Background My app uses UserDefaults, Realm, Core Data, and CloudKit, with all local data stored in the App Group container (FileManager.containerURL(forSecurityApplicationGroupIdentifier:)). The app has been available since 2016 and has a stable user base. Starting last year, I began receiving occasional reports from users saying all their data in the app had disappeared. To investigate, I added diagnostic logging that detects when an existing user's data appears to have been reset — specifically by checking the App Group container's file system creation date, and the existence and values of expected files. What the diagnostics revealed When the issue occurs, I observe the following: The App Group container has a recent creation date, far newer than the user's first launch date The Core Data store file's creation date is also

I'm encountering a null pointer dereference crash pointing to the internals of CFNetwork library code on iOS. I'm spawning URLSessionTasks at a decently fast rate (~1-5 per second), with the goal being to generate application layer network traffic. I can reliably encounter this crash pointing to NetConnection::dequeue right after a new task has been spawned and had the resume method called. I suspect that this is perhaps a race condition or some delegate/session object lifecycle bug. The crash appears to be more easily reproduced with a higher rate of spawning URLSessionTasks. I've included the JSON crash file, the lldb stack trace, and the source code of my URLSession(Task) usage. urlsession_stuff_stacktrace.txt urlsession_stuff_source.txt urlsession_crash_report.txt

Area: CoreML / Machine Learning Describe the issue: On iOS 26.4, calling MLModel(contentsOf:configuration:) to load an .mlpackage model hangs indefinitely and eventually kills the app via watchdog. The same model loads and runs inference successfully in under 1 second on iOS 26.3.1. The hang occurs inside eort_eo_compiler_compile_from_ir_program (espresso) during on-device AOT recompilation triggered by MLE5ProgramLibraryOnDeviceAOTCompilationImpl createProgramLibraryHandleWithRespecialization:error:. A C++ exception (__cxa_throw) is thrown inside libBNNS.dylib during the exception unwind, which then hangs inside __cxxabiv1::dyn_cast_slow and __class_type_info::search_below_dst. Swift's try/catch does not catch this — the exception originates in C++ and the process hangs rather than terminating cleanly. Setting config.computeUnits = .cpuOnly does not resolve the issue. MLE5ProgramLibrary initialises as shared infrastructure regardless of compute units. Steps to reproduce: Create an app with

We have an application that capture audio and video. App captures audio PCM on internal or external microphone and displays audio level on the screen. App was working fine for many years but after iOS 26.4 upgrade, averagePowerLevel and peakHoldLevel are stuck to -120 values. Any suggestion?

I've been working on an app. It uses iCloud syncing. 48 hours ago everything was working 100%. Make a change on the iPhone it immediately changed on the Mac. Change on the Mac, it immediately changed on the iPhone. I didn't work on it yesterday. I updated to iOS26.4 on the iPhone and 26.4 on the Mac yesterday instead. Today, I pull up the project again. I made NO changes to the code or settings. Make a change on the iPhone it immediately updates on the Mac. Make a change on the Mac, nothing happens on the iPhone. I've waited an hour, and the change never happens. If you leave the iPhone app, then return, it updates as it should. It appears that iCloud's silent notification is to being received by the iPhone. Anyone else having the issue? Is there something new with iOS 26.4 that needs to be adjusted to get this to work? Again, works flawlessly with the Mac, just not with the iPhone.

By analysis the log, seems the following 3 calls has been ended by system callkit (Not mainly trigger the end call): @apple Do you have similar report that the iOS CallKit End the call withtour user action? Device info: iPhone18,1（iPhone 16 Pro） iOS 26.2 RCAppMobile/25.4.30.995 CTRadioAccessTechnologyNR（5G NR）

Hi, We're having problems starting an Ad Hoc ipa on an iPad with iOS 12.7.7 and 12.7.8, probably iOS 12 in general. The iPad's UUID is added to the certificate. And we don't have problems with iOS versions > iOS 12. Here is the anonymized Console Log: default 09:05:12.088994+0100 SpringBoard immediate edge swipe: failed default 09:05:12.095189+0100 SpringBoard Icon touch began: default 09:05:12.096204+0100 SpringBoard Found a reasonable launch image for , not pre-warming SplashBoard. Load image into the snapshot instance. default 09:05:12.117737+0100 powerd Activity changes from 0x2 to 0x1. UseActiveState:1 default 09:05:12.118572+0100 powerd hidActive:1 displayOff:0 assertionActivityValid:0 now:0xcb6 hid_ts:0xcb6 assertion_ts:0x0 default 09:05:12.145354+0100 backboardd [HID] [MT] dispatchEvent Dispatching event with 1 children, _eventMask=0x23 _childEventMask=0x3 Cancel=0 Touching=0 inRange=0 default 09:05:12.152820+0100 SpringBoard Icon tapped: default 09:05:12.15823

We are encountering an issue in an iOS application where functionality works correctly in Debug builds but fails in Release builds distributed via TestFlight. Details Debug (No Optimization -Onone): Works correctly Release (Optimize for Speed -O): Fails Release with -Onone: Works, but app size nearly doubles Context The issue is related to integration with the Microsoft ONNX runtime library. It appears that the Swift/Clang compiler is aggressively optimizing certain parts of the code in Release builds, possibly removing or altering required logic. Observations The issue started appearing with recent iOS/Xcode updates. No code changes affecting this logic were made recently. Behavior strongly suggests optimization-related side effects. Questions Are there known issues with aggressive optimization (-O) affecting third-party libraries? Are there recommended flags to selectively disable optimization for specific modules or functions? Any tools or diagnostics to identify what is being optimized o

Hello dear Apple Platform Engineers, I'm working on an iOS App that connects to a Bluetooth Low Energy Peripheral in the foreground. Whenever the App moves into Background, we want to continue syncing data & therefore implemented State Restoration to be informed about Discovery, Connect, Disconnect or Characteristic changes in the Background in order to wake the App up whenever it was Terminated due to memory issue. I consulted https://developer.apple.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingForIOSApps/PerformingTasksWhileYourAppIsInTheBackground.html#//apple_ref/doc/uid/TP40013257-CH7-SW1 for this & assigned: CBCentralManagerOptionRestoreIdentifierKey Reinstantiate the dedicated CentralManager & implemented the centralManager(_ central: CBCentralManager, willRestoreState dict: [String : Any]) Delegate Additionally, I assigned the following keys on connect(_ peripheral: CBPeripheral, options: [String : Any]?

Hello All, I have a app which has a WKWebview loading some code from a remote origin - https://my-company.example.com When WKWebview loads remote origin, that page does load some of the sub-resources from in-app localhost server (GCDWebserver), i.e. reach out to a loopback based in-app GCDWebserver, now to provide a secure context I had an existing setup with self signed cert, CORS and everything needed for https on localhost. And the sub-resources used to load fine from https localhost till 26.4 Starting with iOS 26.4 it started breaking with TLSv1_ALERT_UNKNOWN_CA Is there any known guidance for this? Technically as per w3c spec, localhost is considered secure context by default right? and no special things need to be done. But ios/Webkit seem to be different in this regard. Is this a known issue, and is there any mitigation here? I'll try to provide a sample app soon if possible.

After updating to Xcode 26.4 and also the update on the simulator the copy paste feature in the simulators doesn't work anymore and i can't build my app without it because the user has to copy and paste api keys in it. Is there an solution for it I have tried to install an other simulator ios version but then the simulator doesn't work on the the new xcode. Have someone already found an solution?