注意：请不要将此问题标记为重复，因为我搜索了其他类似的问题，但它们略有不同。
提交我的应用以供审核后，它在iPad Mini（iOS 11.2）上的应用程序的第一个屏幕上崩溃后被拒绝了。此屏幕只是一个基本的注册页面，并且该应用程序在审核过程中从未被拒绝过任何时间（并且该页面最近也未更新）。不幸的是，我没有iPad Mini，而且我的模拟器或物理iPhone设备没有遇到任何崩溃。
崩溃的原因（从我收集的内容来看，最有可能是因为尝试访问内存中不再存在的变量）：
Exception Type: EXC_BAD_ACCESS (SIGKILL)
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000020
这是崩溃的主题：
Thread 0 name: tid_303 Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0 libobjc.A.dylib 0x00000001820fc1a0 objc_retain + 16 (objc-object.h:440)
1 AXRuntime 0x000000019249ee00 _AXElementForAXUIElementUniqueId + 208 (AXSimpleRuntimeManager.m:0)
2 AXRuntime 0x000000019249ed08 _UIAXElementForAXUIElementRef + 48 (AXSimpleRuntimeManager.m:402)
3 UIAccessibility 0x000000019427ae98 -[NSObject(UIAccessibilityAutomation) _accessibilityUserTestingSnapshotDescendantsWithAttributes:maxDepth:maxChildren:maxArrayCount:] + 1444 (UIAccessibilityAutomation.m:593)
4 UIAccessibility 0x000000019427cf08 -[NSObject(UIAccessibilityAutomation) _accessibilityUserTestingSnapshotWithOptions:] + 640 (UIAccessibilityAutomation.m:779)
5 UIAccessibility 0x0000000194250268 -[NSObject(AXPrivCategory) accessibilityAttributeValue:forParameter:] + 8836 (NSObjectAccessibility.m:4304)
6 UIAccessibility 0x000000019422fc80 _copyParameterizedAttributeValueCallback + 224 (UIAccessibilityRuntime.m:752)
7 AXRuntime 0x00000001924a6ad0 ___AXXMIGCopyParameterizedAttributeValue_block_invoke + 100 (AccessibilityPriv.m:1128)
8 AXRuntime 0x00000001924a6238 _handleNonMainThreadCallback + 60 (AccessibilityPriv.m:363)
9 AXRuntime 0x00000001924a6924 _AXXMIGCopyParameterizedAttributeValue + 344 (AccessibilityPriv.m:1127)
10 AXRuntime 0x00000001924a1220 _XCopyParameterizedAttributeValue + 380 (AccessibilityClientDefsServer.c:1160)
11 AXRuntime 0x00000001924b328c mshMIGPerform + 252 (MachServerHelper.c:448)
12 CoreFoundation 0x0000000182e3fe00 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56 (CFRunLoop.c:1998)
13 CoreFoundation 0x0000000182e3f504 __CFRunLoopDoSource1 + 440 (CFRunLoop.c:2135)
14 CoreFoundation 0x0000000182e3cfd8 __CFRunLoopRun + 2196 (CFRunLoop.c:3150)
15 CoreFoundation 0x0000000182d5cc58 CFRunLoopRunSpecific + 436 (CFRunLoop.c:3245)
16 GraphicsServices 0x0000000184c08f84 GSEventRunModal + 100 (GSEvent.c:2245)
17 UIKit 0x000000018c4b55c4 UIApplicationMain + 236 (UIApplication.m:3956)
18 MyAppiOS 0x0000000102346db0 wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr + 16494000 (/<unknown>:1)
19 MyAppiOS 0x00000001022b764c UIKit_UIApplication_Main_string___intptr_intptr + 15906380 (UIApplication.cs:79)
20 MyAppiOS 0x00000001022b760c UIKit_UIApplication_Main_string___string_string + 15906316 (UIApplication.cs:63)
21 MyAppiOS 0x00000001013bfc84 MyApp_iOS_Application_Main_string__ + 212100 (/<unknown>:1)
22 MyAppiOS 0x00000001016fd204 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 244
23 MyAppiOS 0x0000000103297148 mono_jit_runtime_invoke + 32551240 (mini-runtime.c:2768)
24 MyAppiOS 0x00000001032fe574 do_runtime_invoke + 32974196 (object.c:2862)
25 MyAppiOS 0x00000001033010e4 do_exec_main_checked + 32985316 (object.c:4690)
26 MyAppiOS 0x000000010327fb90 mono_jit_exec + 32455568 (driver.g.c:1036)
27 MyAppiOS 0x0000000103392da8 xamarin_main + 33582504 (monotouch-main.m:0)
28 MyAppiOS 0x00000001013bf178 main + 209272 (main.m:203)
29 libdyld.dylib 0x000000018287c56c start + 4
然后在符号化的崩溃日志中有数千条与这些类似的行：
UIAccessibility: Trying pt: {660.00001764298941, 512.00013971327644}
UIAccessibility: Hit testing found: UIAccessibilityPickerComponent [0x127e7cba0] (null) {{0, 514.5}, {1024, 291}}
UIAccessibility: Is descendant of desired element
UIAccessibility: Received visible point {512, 660} for <UIPickerView: 0x1279d5da0; frame = (0 99; 1024 216); clipsToBounds = YES; layer = <CALayer: 0x1279d5d70>>
UIAccessibility: Checking visibility for UIAccessibilityPickerComponent [0x127e7cba0] (null) {{0, 514.5}, {1024, 291}}
UIAccessibility: Trying pt: {660.00001764298941, 512.00013971327644}
UIAccessibility: Element matched start element
UIAccessibility: Received visible point {512, 660} for UIAccessibilityPickerComponent [0x127e7cba0] (null) {{0, 514.5}, {1024, 291}}
UIAccessibility: Did post notification. notification: (4002) error:0 data:{
event = AnimationsNonActive;
}
UIAccessibility: Did post notification. notification: (4002) error:0 data:{
event = RunLoopIsIdle;
}
UIKit: NavBar: set identifier (null) <UINavigationBar: 0x1279ad2f0; frame = (0 20; 1024 96); autoresize = W; tintColor = UIExtendedSRGBColorSpace 0 0.478431 1 1; layer = <CALayer: 0x1279a4490>>
UIKit: NavBar: top most item <<UINavigationItem: 0x127b9ab00>: title:'Register'> <UINavigationBar: 0x1279ad2f0; frame = (0 20; 1024 96); autoresize = W; tintColor = UIExtendedSRGBColorSpace 0 0.478431 1 1; layer = <CALayer: 0x1279a4490>>
// Note: the line above is the last line that is shown, before showing the crashed thread information
我真的不知道该如何制作这个日志。我甚至检查了在第一个屏幕显示期间可能发生的任何其他回调方法，但我无法弄明白（特别是当我甚至无法让它崩溃时）。任何帮助都会非常感激。