Средство проверки основного потока: API пользовательского интерфейса вызывается в фоновом потоке: -[UIImagePickerControl ⇐ IOS

[Anonymous]

При нажатии на элемент навигации, который открывает UIImagePickerController, я получаю приведенный ниже журнал в отладчике и не могу найти документацию, в которой говорится о DidDisplayPhotoPickerSourceType. Примечание. Я представляю средство выбора из основного потока, но по-прежнему сталкиваюсь с этой проблемой в основном потоке.
частичный код:
...
override func viewDidLoad() {
super.viewDidLoad()
collectionView.backgroundColor = .blue
register()
setUp()
collectionView.reloadData()
}

private func setUp() {
navigationController?.isNavigationBarHidden = false
let layout = collectionView.collectionViewLayout as! UICollectionViewFlowLayout
layout.minimumInteritemSpacing = 2
layout.minimumLineSpacing = 2
collectionView.collectionViewLayout = layout

navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .add, target: self, action: #selector(addNewPerson))
}

@objc private func addNewPerson() {
DispatchQueue.main.async { [weak self] in
let picker = UIImagePickerController()
picker.allowsEditing = true
picker.delegate = self
self?.present(picker, animated: false)
}
}
...

Журнал отладчика:
Main Thread Checker: UI API called on a background thread: -[UIImagePickerController didDisplayPhotoPickerSourceType:]
PID: 85527, TID: 2803975, Thread name: (none), Queue name: com.apple.NSXPCConnection.user.anonymous.85796, QoS: 0
Backtrace:
4 PhotosUI 0x00000001ad0380c8 -[PUPhotoPickerExtensionHostContext didDisplayPhotoPickerSourceType:] + 96
5 Foundation 0x0000000180fb6c10 __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT_S1__ + 12
6 Foundation 0x0000000180fb59e0 -[NSXPCConnection _decodeAndInvokeMessageWithEvent:reply] + 1664
7 Foundation 0x0000000180fb79ec message_handler_message + 84
8 Foundation 0x0000000180fb6f80 message_handler + 148
9 libxpc.dylib 0x00000001800cca0c _xpc_connection_call_event_handler + 68
10 libxpc.dylib 0x00000001800ce10c _xpc_connection_mach_event + 1048
11 libdispatch.dylib 0x0000000105b3f904 _dispatch_client_callout4 + 12
12 libdispatch.dylib 0x0000000105b42a90 _dispatch_mach_msg_invoke + 672
13 libdispatch.dylib 0x0000000105b2d75c _dispatch_lane_serial_drain + 324
14 libdispatch.dylib 0x0000000105b43d50 _dispatch_mach_invoke + 504
15 libdispatch.dylib 0x0000000105b2d75c _dispatch_lane_serial_drain + 324
16 libdispatch.dylib 0x0000000105b2e708 _dispatch_lane_invoke + 420
17 libdispatch.dylib 0x0000000105b3b3ac _dispatch_root_queue_drain_deferred_wlh + 324
18 libdispatch.dylib 0x0000000105b3a918 _dispatch_workloop_worker_thread + 732
19 libsystem_pthread.dylib 0x0000000247927b74 _pthread_wqthread + 284
20 libsystem_pthread.dylib 0x0000000247926934 start_wqthread + 8
Main Thread Checker: UI API called on a background thread: -[UIImagePickerController didDisplayPhotoPickerSourceType:]
PID: 85527, TID: 2803975, Thread name: (none), Queue name: com.apple.NSXPCConnection.user.anonymous.85796, QoS: 0
Backtrace:
4 PhotosUI 0x00000001ad0380c8 -[PUPhotoPickerExtensionHostContext didDisplayPhotoPickerSourceType:] + 96
5 Foundation 0x0000000180fb6c10 __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT_S1__ + 12
6 Foundation 0x0000000180fb59e0 -[NSXPCConnection _decodeAndInvokeMessageWithEvent:reply] + 1664
7 Foundation 0x0000000180fb79ec message_handler_message + 84
8 Foundation 0x0000000180fb6f80 message_handler + 148
9 libxpc.dylib 0x00000001800cca0c _xpc_connection_call_event_handler + 68
10 libxpc.dylib 0x00000001800ce10c _xpc_connection_mach_event + 1048
11 libdispatch.dylib 0x0000000105b3f904 _dispatch_client_callout4 + 12
12 libdispatch.dylib 0x0000000105b42a90 _dispatch_mach_msg_invoke + 672
13 libdispatch.dylib 0x0000000105b2d75c _dispatch_lane_serial_drain + 324
14 libdispatch.dylib 0x0000000105b43d50 _dispatch_mach_invoke + 504
15 libdispatch.dylib 0x0000000105b2d75c _dispatch_lane_serial_drain + 324
16 libdispatch.dylib 0x0000000105b2e708 _dispatch_lane_invoke + 420
17 libdispatch.dylib 0x0000000105b3b3ac _dispatch_root_queue_drain_deferred_wlh + 324
18 libdispatch.dylib 0x0000000105b3a918 _dispatch_workloop_worker_thread + 732
19 libsystem_pthread.dylib 0x0000000247927b74 _pthread_wqthread + 284
20 libsystem_pthread.dylib 0x0000000247926934 start_wqthread + 8


Подробнее здесь: https://stackoverflow.com/questions/791 ... ckercontro