アップルクラッシュログを理解できません

Question

アップルからのこのクラッシュログを理解できません。私はこれのために数回拒否されてきました。彼らは最新のソフトウェアを実行しているipadで発生していると不平を言っています10.3.1。 ipadシミュレータで二重チェックすると、クラッシュすることなく動作します。

Last Exception Backtrace: 
0 CoreFoundation     0x1848b2fd8 __exceptionPreprocess + 124 
1 libobjc.A.dylib     0x183314538 objc_exception_throw + 56 
2 CoreFoundation     0x1848b2eac +[NSException raise:format:arguments:] + 104 
3 Foundation      0x18534a710 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 112 
4 UIKit       0x18ac57454 -[UIApplication _cachedSystemAnimationFenceCreatingIfNecessary:] + 196 
5 UIKit       0x18ac57514 -[UIApplication _systemAnimationFenceCreatingIfNecessary:] + 24 
6 UIKit       0x18acb07a0 +[UIWindow _synchronizedDrawingFence] + 116 
7 UIKit       0x18ae6e150 +[_UIKeyboardChangedInformation informationForKeyboardUp:withIAV:] + 104 
8 UIKit       0x18b1678d4 -[_UIRemoteKeyboards prepareToMoveKeyboard:withIAV:showing:forScreen:] + 464 
9 UIKit       0x18aa9fc04 -[UIPeripheralHost(UIKitInternal) setInputViews:animationStyle:] + 820 
10 UIKit       0x18aabccf4 -[UIPeripheralHost(UIKitInternal) _restoreInputViewsWithId:animated:] + 584 
11 UIKit       0x18ad4fd64 -[UIViewController _restoreInputViewsForPresentation] + 280 
12 UIKit       0x18ad2ae3c -[UIPresentationController runTransitionForCurrentState] + 1560 
13 UIKit       0x18ad290f8 -[UIPresentationController _dismissWithAnimationController:interactionController:target:didEndSelector:] + 764 
14 UIKit       0x18ad4f8c0 -[UIViewController _dismissViewControllerWithAnimationController:interactionController:completion:] + 464 
15 UIKit       0x18ab04cd4 -[UIViewController _dismissViewControllerWithTransition:from:completion:] + 600 
16 UIKit       0x18aaacb6c -[UIViewController dismissViewControllerWithTransition:completion:] + 1144 
17 UIKit       0x18aaac94c -[UIViewController dismissViewControllerWithTransition:completion:] + 600 
18 UIKit       0x18ad4eb68 -[UIViewController _performCoordinatedPresentOrDismiss:animated:] + 524 
19 UIKit       0x18aaac6c0 -[UIViewController dismissViewControllerAnimated:completion:] + 152 
20 newapp       0x100115628 0x1000b0000 + 415272 
21 newapp       0x1001159e8 0x1000b0000 + 416232 
22 CFNetwork      0x184ebc1fc __75-[__NSURLSessionLocal taskForClass:request:uploadFile:bodyData:completion:]_block_invoke + 32 
23 CFNetwork      0x184ed3ef8 __49-[__NSCFLocalSessionTask _task_onqueue_didFinish]_block_invoke + 148 
24 Foundation      0x185381804 __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__ + 16 
25 Foundation      0x1852c6760 -[NSBlockOperation main] + 96 
26 Foundation      0x1852b6b18 -[__NSOperationInternal _start:] + 612 
27 Foundation      0x185383ba0 __NSOQSchedule_f + 228 
28 libdispatch.dylib    0x18376a9a0 _dispatch_client_callout + 16 
29 libdispatch.dylib    0x183778ad4 _dispatch_queue_serial_drain + 928 
30 libdispatch.dylib    0x18376e2cc _dispatch_queue_invoke + 884 
31 libdispatch.dylib    0x18377aa50 _dispatch_root_queue_drain + 540 
32 libdispatch.dylib    0x18377a7d0 _dispatch_worker_thread3 + 124 
33 libsystem_pthread.dylib   0x1839731d0 _pthread_wqthread + 1096 
34 libsystem_pthread.dylib   0x183972d7c start_wqthread + 4 


Thread 0 name: Dispatch queue: com.apple.main-thread 
Thread 0: 
0 libsystem_kernel.dylib   0x000000018388f224 mach_msg_trap + 8 
1 libsystem_kernel.dylib   0x000000018388f09c mach_msg + 72 
2 CoreFoundation     0x0000000184860e88 __CFRunLoopServiceMachPort + 192 
3 CoreFoundation     0x000000018485eadc __CFRunLoopRun + 1060 
4 CoreFoundation     0x000000018478ed94 CFRunLoopRunSpecific + 424 
5 GraphicsServices    0x00000001861f8074 GSEventRunModal + 100 
6 UIKit       0x000000018aa40130 UIApplicationMain + 208 
7 newapp       0x000000010022f390 0x1000b0000 + 1569680 
8 libdyld.dylib     0x000000018379d59c start + 4 

Thread 1 name: com.apple.uikit.eventfetch-thread 
Thread 1: 
0 libsystem_kernel.dylib   0x000000018388f224 mach_msg_trap + 8 
1 libsystem_kernel.dylib   0x000000018388f09c mach_msg + 72 
2 CoreFoundation     0x0000000184860e88 __CFRunLoopServiceMachPort + 192 
3 CoreFoundation     0x000000018485eadc __CFRunLoopRun + 1060 
4 CoreFoundation     0x000000018478ed94 CFRunLoopRunSpecific + 424 
5 Foundation      0x00000001852a8d64 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 304 
6 Foundation      0x00000001852c9b34 -[NSRunLoop(NSRunLoop) runUntilDate:] + 96 
7 UIKit       0x000000018b3ca5f8 -[UIEventFetcher threadMain] + 136 
8 Foundation      0x00000001853a62c8 __NSThread__start__ + 996 
9 libsystem_pthread.dylib   0x000000018397575c _pthread_body + 240 
10 libsystem_pthread.dylib   0x000000018397566c _pthread_body + 0 
11 libsystem_pthread.dylib   0x0000000183972d84 thread_start + 4 

Thread 2: 
0 libsystem_kernel.dylib   0x00000001838ada88 __workq_kernreturn + 8 
1 libsystem_pthread.dylib   0x0000000183973274 _pthread_wqthread + 1260 
2 libsystem_pthread.dylib   0x0000000183972d7c start_wqthread + 4 

Thread 3 name: com.apple.CFStream.LegacyThread 
Thread 3: 
0 libsystem_kernel.dylib   0x000000018388f224 mach_msg_trap + 8 
1 libsystem_kernel.dylib   0x000000018388f09c mach_msg + 72 
2 CoreFoundation     0x0000000184860e88 __CFRunLoopServiceMachPort + 192 
3 CoreFoundation     0x000000018485eadc __CFRunLoopRun + 1060 
4 CoreFoundation     0x000000018478ed94 CFRunLoopRunSpecific + 424 
5 CoreFoundation     0x000000018486e78c _legacyStreamRunLoop_workThread + 268 
6 libsystem_pthread.dylib   0x000000018397575c _pthread_body + 240 
7 libsystem_pthread.dylib   0x000000018397566c _pthread_body + 0 
8 libsystem_pthread.dylib   0x0000000183972d84 thread_start + 4 

Thread 4 name: com.apple.NSURLConnectionLoader 
Thread 4: 
0 libsystem_kernel.dylib   0x000000018388f224 mach_msg_trap + 8 
1 libsystem_kernel.dylib   0x000000018388f09c mach_msg + 72 
2 CoreFoundation     0x0000000184860e88 __CFRunLoopServiceMachPort + 192 
3 CoreFoundation     0x000000018485eadc __CFRunLoopRun + 1060 
4 CoreFoundation     0x000000018478ed94 CFRunLoopRunSpecific + 424 
5 CFNetwork      0x0000000184f9aca4 +[NSURLConnection(Loader) _resourceLoadLoop:] + 404 
6 Foundation      0x00000001853a62c8 __NSThread__start__ + 996 
7 libsystem_pthread.dylib   0x000000018397575c _pthread_body + 240 
8 libsystem_pthread.dylib   0x000000018397566c _pthread_body + 0 
9 libsystem_pthread.dylib   0x0000000183972d84 thread_start + 4 

Thread 5 name: Dispatch queue: NSOperationQueue 0x170031360 :: NSOperation 0x17024ab30 (QOS: DEFAULT) 
Thread 5 Crashed: 
0 libsystem_kernel.dylib   0x00000001838ad014 __pthread_kill + 8 
1 libsystem_pthread.dylib   0x0000000183977334 pthread_kill + 112 
2 libsystem_c.dylib    0x00000001838219c4 abort + 140 
3 libc++abi.dylib     0x00000001832ed1b0 __cxa_bad_cast + 0 
4 libc++abi.dylib     0x0000000183306c04 default_unexpected_handler() + 0 
5 libobjc.A.dylib     0x0000000183314820 _objc_terminate() + 124 
6 libc++abi.dylib     0x00000001833035d4 std::__terminate(void (*)()) + 16 
7 libc++abi.dylib     0x0000000183303640 std::terminate() + 60 
8 libdispatch.dylib    0x000000018376a9b4 _dispatch_client_callout + 36 
9 libdispatch.dylib    0x0000000183778ad4 _dispatch_queue_serial_drain + 928 
10 libdispatch.dylib    0x000000018376e2cc _dispatch_queue_invoke + 884 
11 libdispatch.dylib    0x000000018377aa50 _dispatch_root_queue_drain + 540 
12 libdispatch.dylib    0x000000018377a7d0 _dispatch_worker_thread3 + 124 
13 libsystem_pthread.dylib   0x00000001839731d0 _pthread_wqthread + 1096 
14 libsystem_pthread.dylib   0x0000000183972d7c start_wqthread + 4 

は、ログは明らかに問題がバックグラウンドスレッドで発生示します

Answer 1

ありがとうございます。メインキューでUIアクションを実行する必要があります。ビューコントローラを閉じるには、DispatchQueue.main.asyncを使用します。