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我的iPad應用程序中有一個側面板視圖（如側面抽屜），其中包含具有2個選項卡的tabbar。這個視圖超出了ipad可見的屏幕，並且一旦我們從左側拉出它就會變得可見。這會在應用程序啓動時始終進行初始化。它主要在iPad 4機型上隨機在iOS 7.0.3和7.0.4上崩潰。在調試器被連接時，我無法在調試模式下重現它，並且在發佈版本上重現頻率爲1％或更低。無法找到TabBar上隨機崩潰的根本原因
它不會是一個iOS問題，但任何猜測或任何人面臨和解決類似的問題？
Crash report:
Hardware Model: iPad3,4
Code Type: ARM (Native)
OS Version: iOS 7.0.4 (11B554a)
Crash report:
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread: 12
Thread 0:
0 libsystem_kernel.dylib 0x38d7ebb4 syscall_thread_switch + 8
1 libsystem_platform.dylib 0x38df349c _os_lock_handoff_lock_slow + 48
2 libsystem_malloc.dylib 0x38db90f8 szone_free_definite_size + 328
3 libRIP.A.dylib 0x2e4ffb72 ripc_ReleaseClipState + 34
4 libRIP.A.dylib 0x2e503438 ripc_EndLayer + 80
5 CoreGraphics 0x2e1c25e8 CGContextEndTransparencyLayer + 36
6 UIKit 0x309e4d2a -[UIImage(TabBarItemImages) _tabBarItemImageWithTintColor:selected:metrics:style:forScreenScale:] + 902
7 UIKit 0x309e5070 -[UIImage(TabBarItemImages) _unselectedTabBarItemImageWithTintColor:metrics:style:forScreenScale:] + 36
8 UIKit 0x309e4748 -[UITabBarItem(Static) _updateImageWithTintColor:isSelected:getImageOffset:] + 552
9 UIKit 0x309e414c -[UITabBarItem(Static) _createViewForTabBar:showingBadge:withTint:idiom:] + 956
10 UIKit 0x309e3d82 -[UITabBarItem(Static) _createViewForTabBar:showingBadge:idiom:] + 34
11 UIKit 0x309e0028 -[UITabBarItem(Static) _updateViewForIdiom:positionItems:] + 156
12 UIKit 0x309e74ca -[UITabBar(Static) _configureItems:] + 402
13 UIKit 0x309e6b7e -[UITabBar(Static) _positionTabBarButtons:ignoringItem:] + 1270
14 UIKit 0x309e3b38 -[UITabBar setItems:animated:] + 1352
15 UIKit 0x309e3522 -[UITabBarController _rebuildTabBarItemsAnimated:] + 798
16 UIKit 0x309e7a74 -[UITabBarController _setSelectedViewController:] + 72
17 UIKit 0x308cdcf2 +[UIView(Animation) performWithoutAnimation:] + 70
18 UIKit 0x309eb470 -[UITabBarController _selectDefaultViewControllerIfNecessaryWithAppearanceTransitions:] + 216
19 UIKit 0x309ea8e6 -[UITabBarController viewWillAppear:] + 130
20 UIKit 0x308d66fa -[UIViewController _setViewAppearState:isAnimating:] + 342
21 CoreFoundation 0x2e080800 __53-[__NSArrayI enumerateObjectsWithOptions:usingBlock:]_block_invoke + 48
22 CoreFoundation 0x2e07a21a -[__NSArrayI enumerateObjectsWithOptions:usingBlock:] + 218
23 UIKit 0x308d6876 -[UIViewController _setViewAppearState:isAnimating:] + 722
24 UIKit 0x30a4ccfa -[UINavigationController _startCustomTransition:] + 842
25 UIKit 0x3096aa12 -[UINavigationController _startDeferredTransitionIfNeeded:] + 414
26 UIKit 0x3096a81c -[UINavigationController __viewWillLayoutSubviews] + 40
27 UIKit 0x3096a7b4 -[UILayoutContainerView layoutSubviews] + 180
28 UIKit 0x308bc34e -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 342
29 QuartzCore 0x3054293e -[CALayer layoutSublayers] + 138
30 QuartzCore 0x3053e162 CA::Layer::layout_if_needed(CA::Transaction*) + 346
31 QuartzCore 0x3053dff4 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 12
32 QuartzCore 0x3053da08 CA::Context::commit_transaction(CA::Transaction*) + 224
33 QuartzCore 0x3053d81a CA::Transaction::commit() + 310
34 QuartzCore 0x30537548 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 52
35 CoreFoundation 0x2e102f66 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18
36 CoreFoundation 0x2e1008f2 __CFRunLoopDoObservers + 282
37 CoreFoundation 0x2e100c3e __CFRunLoopRun + 734
38 CoreFoundation 0x2e06b46c CFRunLoopRunSpecific + 520
39 CoreFoundation 0x2e06b24e CFRunLoopRunInMode + 102
40 GraphicsServices 0x32d722e6 GSEventRunModal + 134
41 UIKit 0x30920840 UIApplicationMain + 1132
42 MyApp 0x0006b5f2 0x64000 + 30194
43 libdyld.dylib 0x38cdaab4 start + 0
Thread 12 Crashed:
0 libsystem_kernel.dylib 0x38d911fc __pthread_kill + 8
1 libsystem_pthread.dylib 0x38df8a4e pthread_kill + 54
2 libsystem_c.dylib 0x38d42082 __abort + 74
3 libsystem_c.dylib 0x38d42034 abort + 84
4 libsystem_malloc.dylib 0x38dbf758 szone_error + 312
5 libsystem_malloc.dylib 0x38dbf9d4 free_list_checksum_botch + 24
6 libsystem_malloc.dylib 0x38dba1a4 tiny_free_list_remove_ptr + 76
7 libsystem_malloc.dylib 0x38db9770 szone_free_definite_size + 1984
8 libsystem_blocks.dylib 0x38cf7ac2 _Block_release + 214
9 libdispatch.dylib 0x38ccae76 _dispatch_queue_drain + 370
10 libdispatch.dylib 0x38cc7f8e _dispatch_queue_invoke + 38
11 libdispatch.dylib 0x38ccb742 _dispatch_root_queue_drain + 74
12 libdispatch.dylib 0x38ccb9c0 _dispatch_worker_thread2 + 52
13 libsystem_pthread.dylib 0x38df5dfc _pthread_wqthread + 296
14 libsystem_pthread.dylib 0x38df5cc0 start_wqthread + 4
在類似情況下的另一種隨機崩潰：
Thread 0 Crashed:
0 CoreFoundation 0x311e9728 -[__NSDictionaryM objectForKey:] + 100
1 UIKit 0x33a3e855 -[UILabel _setFont:] + 209
2 UIKit 0x33b5a411 -[UITabBarButton initWithImage:selectedImage:label:withInsets:] + 293
3 UIKit 0x33b59223 -[UITabBarItem(Static) _createViewForTabBar:showingBadge:withTint:idiom:] + 1171
4 UIKit 0x33b58d87 -[UITabBarItem(Static) _createViewForTabBar:showingBadge:idiom:] + 39
5 UIKit 0x33b5502d -[UITabBarItem(Static) _updateViewForIdiom:positionItems:] + 161
6 UIKit 0x33b5c4cf -[UITabBar(Static) _configureItems:] + 407
7 UIKit 0x33b5bb83 -[UITabBar(Static) _positionTabBarButtons:ignoringItem:] + 1275
8 UIKit 0x33b58b3d -[UITabBar setItems:animated:] + 1357
9 UIKit 0x33b58527 -[UITabBarController _rebuildTabBarItemsAnimated:] + 803
10 UIKit 0x33b5ca79 -[UITabBarController _setSelectedViewController:] + 77
11 UIKit 0x33a42cf5 +[UIView(Animation) performWithoutAnimation:] + 73
12 UIKit 0x33b60475 -[UITabBarController _selectDefaultViewControllerIfNecessaryWithAppearanceTransitions:] + 221
13 UIKit 0x33b5f8eb -[UITabBarController viewWillAppear:] + 135
14 UIKit 0x33a4b6ff -[UIViewController _setViewAppearState:isAnimating:] + 347
15 CoreFoundation 0x311f5803 __53-[__NSArrayI enumerateObjectsWithOptions:usingBlock:]_block_invoke + 51
16 CoreFoundation 0x311ef21d -[__NSArrayI enumerateObjectsWithOptions:usingBlock:] + 221
17 UIKit 0x33a4b87b -[UIViewController _setViewAppearState:isAnimating:] + 727
18 UIKit 0x33bc1cff -[UINavigationController _startCustomTransition:] + 847
19 UIKit 0x33adfa17 -[UINavigationController _startDeferredTransitionIfNeeded:] + 419
20 UIKit 0x33adf821 -[UINavigationController __viewWillLayoutSubviews] + 45
21 UIKit 0x33adf7b9 -[UILayoutContainerView layoutSubviews] + 185
22 UIKit 0x33a31353 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 347
23 QuartzCore 0x336b7943 -[CALayer layoutSublayers] + 143
24 QuartzCore 0x336b3167 CA::Layer::layout_if_needed(CA::Transaction*) + 351
25 QuartzCore 0x336b2ff9 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 17
26 QuartzCore 0x336b2a0d CA::Context::commit_transaction(CA::Transaction*) + 229
27 QuartzCore 0x336b281f CA::Transaction::commit() + 315
28 QuartzCore 0x336ac54d CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 57
29 CoreFoundation 0x31277f69 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 21
30 CoreFoundation 0x312758f7 __CFRunLoopDoObservers + 287
31 CoreFoundation 0x31275c43 __CFRunLoopRun + 739
32 CoreFoundation 0x311e0471 CFRunLoopRunSpecific + 525
33 CoreFoundation 0x311e0253 CFRunLoopRunInMode + 107
34 GraphicsServices 0x35ee12eb GSEventRunModal + 139
35 UIKit 0x33a95845 UIApplicationMain + 1137
36 SofTestM 0x000545f7 0x4d000 + 30199
的第二次碰撞是在設置字體的時間
UITabBar-->UITabBarButton->UILabel (of UITabBarButton) _setFont:
你是否使用GCD編寫過任何代碼？如果是的話，顯示該代碼？ – Mani
您可以與我們分享在線程12上運行的代碼嗎？ 從它的外觀它試圖釋放一個塊，並由於某種原因失敗。 – Andrew