Upon clicking on the navigationItem which opens a UIImagePickerController, I get the beneath log within the debugger, and can’t discover any documentation that speaks about didDisplayPhotoPickerSourceType. Word I’m presenting the picker from the primary thread and nonetheless getting this foremost thread challenge.
partial code:
...
override func viewDidLoad() {
tremendous.viewDidLoad()
collectionView.backgroundColor = .blue
register()
setUp()
collectionView.reloadData()
}
non-public func setUp() {
navigationController?.isNavigationBarHidden = false
let format = collectionView.collectionViewLayout as! UICollectionViewFlowLayout
format.minimumInteritemSpacing = 2
format.minimumLineSpacing = 2
collectionView.collectionViewLayout = format
navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .add, goal: self, motion: #selector(addNewPerson))
}
@objc non-public func addNewPerson() {
DispatchQueue.foremost.async { [weak self] in
let picker = UIImagePickerController()
picker.allowsEditing = true
picker.delegate = self
self?.current(picker, animated: false)
}
}
...
Debugger Log:
Principal Thread Checker: UI API known as on a background thread: -[UIImagePickerController didDisplayPhotoPickerSourceType:]
PID: 85527, TID: 2803975, Thread title: (none), Queue title: com.apple.NSXPCConnection.consumer.nameless.85796, QoS: 0
Backtrace:
4 PhotosUI 0x00000001ad0380c8 -[PUPhotoPickerExtensionHostContext didDisplayPhotoPickerSourceType:] + 96
5 Basis 0x0000000180fb6c10 __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT_S1__ + 12
6 Basis 0x0000000180fb59e0 -[NSXPCConnection _decodeAndInvokeMessageWithEvent:reply:flags:] + 1664
7 Basis 0x0000000180fb79ec message_handler_message + 84
8 Basis 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
Principal Thread Checker: UI API known as on a background thread: -[UIImagePickerController didDisplayPhotoPickerSourceType:]
PID: 85527, TID: 2803975, Thread title: (none), Queue title: com.apple.NSXPCConnection.consumer.nameless.85796, QoS: 0
Backtrace:
4 PhotosUI 0x00000001ad0380c8 -[PUPhotoPickerExtensionHostContext didDisplayPhotoPickerSourceType:] + 96
5 Basis 0x0000000180fb6c10 __NSXPCCONNECTION_IS_CALLING_OUT_TO_EXPORTED_OBJECT_S1__ + 12
6 Basis 0x0000000180fb59e0 -[NSXPCConnection _decodeAndInvokeMessageWithEvent:reply:flags:] + 1664
7 Basis 0x0000000180fb79ec message_handler_message + 84
8 Basis 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