我的应用程序最近有很多随机崩溃。 Fabric显示崩溃率约为1％。崩溃会话号和崩溃用户号非常接近，这意味着它非常随机。
崩溃在Fabric上显示了几个不同的callstack，这里有三个。
========== 1 ===============
#0. Crashed: com.apple.main-thread
0 QuartzCore 0x188715730 CALayerGetSuperlayer + 20
1 UIKit 0x188dd6fa0 -[UIView(Hierarchy) superview] + 44
2 UIKit 0x188dd7a88 -[UIView nextResponder] + 108
3 UIKit 0x188e9d99c -[UIResponder _containsResponder:] + 56
4 UIKit 0x188ecfc80 -[UITransitionView transition:fromView:toView:removeFromView:] + 576
5 UIKit 0x188f13238 -[UITabBarController transitionFromViewController:toViewController:transition:shouldSetSelected:] + 1536
6 UIKit 0x188f12aec -[UITabBarController _setSelectedViewController:] + 360
7 UIKit 0x188fda30c -[UITabBarController _tabBarItemClicked:] + 336
8 UIKit 0x188e11398 -[UIApplication sendAction:to:from:forEvent:] + 96
9 UIKit 0x188fda160 -[UITabBar _sendAction:withEvent:] + 468
10 UIKit 0x188e11398 -[UIApplication sendAction:to:from:forEvent:] + 96
11 UIKit 0x188dfa474 -[UIControl _sendActionsForEvents:withEvent:] + 612
12 UIKit 0x188fd9d98 -[UITabBar(Static) _buttonUp:] + 128
13 UIKit 0x188e11398 -[UIApplication sendAction:to:from:forEvent:] + 96
14 UIKit 0x188dfa474 -[UIControl _sendActionsForEvents:withEvent:] + 612
15 UIKit 0x188e10d34 -[UIControl touchesEnded:withEvent:] + 592
16 UIKit 0x188dcff54 _UIGestureRecognizerUpdate + 8536
17 CoreFoundation 0x18431c2a4 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
18 CoreFoundation 0x184319230 __CFRunLoopDoObservers + 360
19 CoreFoundation 0x184319610 __CFRunLoopRun + 836
20 CoreFoundation 0x1842452d4 CFRunLoopRunSpecific + 396
21 GraphicsServices 0x18dc9b6fc GSEventRunModal + 168
22 UIKit 0x188e42f40 UIApplicationMain + 1488
====================== 2 ======================= < / p>
#0. Crashed: com.apple.main-thread
0 QuartzCore 0x18e7ca1d0 CALayerGetSuperlayer + 20
1 UIKit 0x191e4e9d4 -[UIView(UIKitManual) superview] + 128
2 UIKit 0x1915d3a5c -[UIView nextResponder] + 120
3 UIKit 0x19197d620 -[UIResponder _canChangeFirstResponder:toResponder:] + 64
4 UIKit 0x19165c01c -[UIResponder becomeFirstResponder] + 224
5 UIKit 0x19169b118 -[UINavigationController navigationTransitionView:didStartTransition:] + 760
6 UIKit 0x1917758ac -[UINavigationController _startCustomTransition:] + 3852
7 UIKit 0x19168f7bc -[UINavigationController _startDeferredTransitionIfNeeded:] + 676
8 UIKit 0x19168f424 -[UINavigationController __viewWillLayoutSubviews] + 64
9 UIKit 0x19168f388 -[UILayoutContainerView layoutSubviews] + 188
10 UIKit 0x1915d5cc0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1200
11 QuartzCore 0x18e7c6274 -[CALayer layoutSublayers] + 148
12 QuartzCore 0x18e7bade8 CA::Layer::layout_if_needed(CA::Transaction*) + 292
13 QuartzCore 0x18e7baca8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
14 QuartzCore 0x18e73634c CA::Context::commit_transaction(CA::Transaction*) + 252
15 QuartzCore 0x18e75d3ac CA::Transaction::commit() + 504
16 QuartzCore 0x18e75de78 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 120
17 CoreFoundation 0x18b4549a8 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
18 CoreFoundation 0x18b452630 __CFRunLoopDoObservers + 372
19 CoreFoundation 0x18b452a7c __CFRunLoopRun + 956
20 CoreFoundation 0x18b382da4 CFRunLoopRunSpecific + 424
21 GraphicsServices 0x18cded074 GSEventRunModal + 100
22 UIKit 0x19163dc9c UIApplicationMain + 208
========= 3 ======
#0. Crashed: com.apple.main-thread
0 libobjc.A.dylib 0x18fe4c1a0 objc_retain + 16
1 UIKit 0x1974fba5c -[UIView nextResponder] + 120
2 UIKit 0x1978a45ec -[UIResponder _resignIfContainsFirstResponder] + 156
3 UIKit 0x1974fb76c -[UIView(Hierarchy) _willMoveToWindow:] + 568
4 UIKit 0x197507d88 -[UIView(Internal) _addSubview:positioned:relativeTo:] + 424
5 UIKit 0x197773000 __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke_2 + 1556
6 UIKit 0x19750e964 +[UIView(Animation) performWithoutAnimation:] + 104
7 UIKit 0x1976e0950 __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke + 260
8 UIKit 0x1977fd388 +[UIView(Internal) _performBlockDelayingTriggeringResponderEvents:] + 220
9 UIKit 0x1976e0450 -[_UINavigationParallaxTransition animateTransition:] + 1060
10 UIKit 0x19769d818 -[UINavigationController _startCustomTransition:] + 3704
11 UIKit 0x1975b77bc -[UINavigationController _startDeferredTransitionIfNeeded:] + 676
12 UIKit 0x1975b7424 -[UINavigationController __viewWillLayoutSubviews] + 64
13 UIKit 0x1975b7388 -[UILayoutContainerView layoutSubviews] + 188
14 UIKit 0x1974fdcc0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1200
15 QuartzCore 0x1946ee274 -[CALayer layoutSublayers] + 148
16 QuartzCore 0x1946e2de8 CA::Layer::layout_if_needed(CA::Transaction*) + 292
17 QuartzCore 0x1946e2ca8 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 32
18 QuartzCore 0x19465e34c CA::Context::commit_transaction(CA::Transaction*) + 252
19 QuartzCore 0x1946853ac CA::Transaction::commit() + 504
20 UIKit 0x1974f3308 _afterCACommitHandler + 256
21 CoreFoundation 0x19137c9a8 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
22 CoreFoundation 0x19137a630 __CFRunLoopDoObservers + 372
23 CoreFoundation 0x19137aa7c __CFRunLoopRun + 956
24 CoreFoundation 0x1912aada4 CFRunLoopRunSpecific + 424
25 GraphicsServices 0x192d15074 GSEventRunModal + 100
26 UIKit 0x197565c9c UIApplicationMain + 208
我不知道哪个页面或哪个动作导致了这次崩溃，我也无法重现这一点。
还试过Xcode分析，僵尸，记忆仪，没有运气。
如果您有任何意见，请与我们联系。