我有一个设置，我正在呈现一个 UIPickerViewController（模态），然后将更多的控制器推送到堆栈上以进行图像编辑。如果我点击后退按钮并进入根视图控制器，然后点击另一个选项卡，应用程序就会崩溃。
这是崩溃消息：
-[PostPhotoViewController respondsToSelector:]: message sent to deallocated instance 0x19b16a60
我运行了 Zombies 工具，看起来堆栈上的最后一个视图控制器 (PostPhotoViewController) 正在接收发送给它的消息，即使它已被释放。这在 iOS5 和 6 上都发生了，所以我没有做任何手动释放/保留。
我已将所有出口设置为 nil PostPhotoVC 并取消订阅所有通知。该消息似乎来自标签栏控制器。
不知道如何阻止它，有什么想法吗？
这是僵尸读数：
# Address Category Event Type RefCt Timestamp Size Responsible Library Responsible Caller
0 0x1b730790 PostPhotoViewController Malloc 1 00:19.248.903 256 UIKit -[UIClassSwapper initWithCoder:]
1 0x1b730790 PostPhotoViewController Retain 2 00:19.248.948 0 UIKit UINibDecoderDecodeObjectForValue
2 0x1b730790 PostPhotoViewController Retain 3 00:19.248.998 0 UIKit -[UIRuntimeConnection initWithCoder:]
3 0x1b730790 PostPhotoViewController Retain 4 00:19.249.004 0 UIKit -[UIRuntimeConnection initWithCoder:]
4 0x1b730790 PostPhotoViewController Retain 5 00:19.249.025 0 UIKit -[UIRuntimeConnection initWithCoder:]
5 0x1b730790 PostPhotoViewController Retain 6 00:19.249.030 0 UIKit -[UIRuntimeConnection initWithCoder:]
6 0x1b730790 PostPhotoViewController Retain 7 00:19.249.067 0 UIKit UINibDecoderDecodeObjectForValue
7 0x1b730790 PostPhotoViewController Retain 8 00:19.249.080 0 UIKit UINibDecoderDecodeObjectForValue
8 0x1b730790 PostPhotoViewController Retain 9 00:19.249.648 0 UIKit -[UIStoryboardScene setSceneViewController:]
9 0x1b730790 PostPhotoViewController Retain 10 00:19.249.759 0 UIKit -[UINib instantiateWithOwner:options:]
10 0x1b730790 PostPhotoViewController Release 9 00:19.249.849 0 UIKit -[UINibDecoder finishDecoding]
11 0x1b730790 PostPhotoViewController Release 8 00:19.249.884 0 UIKit -[UINibDecoder finishDecoding]
12 0x1b730790 PostPhotoViewController Release 7 00:19.249.897 0 UIKit -[UINibDecoder finishDecoding]
13 0x1b730790 PostPhotoViewController Release 6 00:19.249.900 0 UIKit -[UINibDecoder finishDecoding]
14 0x1b730790 PostPhotoViewController Release 5 00:19.249.921 0 UIKit -[UIRuntimeConnection dealloc]
15 0x1b730790 PostPhotoViewController Release 4 00:19.249.930 0 UIKit -[UIRuntimeConnection dealloc]
16 0x1b730790 PostPhotoViewController Release 3 00:19.249.936 0 UIKit -[UIRuntimeConnection dealloc]
17 0x1b730790 PostPhotoViewController Release 2 00:19.249.946 0 UIKit -[UIRuntimeConnection dealloc]
18 0x1b730790 PostPhotoViewController Retain 3 00:19.249.998 0 UIKit -[UIStoryboardSegue initWithIdentifier:source:destination:]
19 0x1b730790 PostPhotoViewController Retain 4 00:19.250.010 0 V Nation -[ImageEditViewController prepareForSegue:sender:]
20 0x1b730790 PostPhotoViewController Release 3 00:19.250.018 0 V Nation -[ImageEditViewController prepareForSegue:sender:]
21 0x1b730790 PostPhotoViewController Retain 4 00:19.250.045 0 UIKit -[UIViewController _addChildViewController:performHierarchyCheck:notifyWillMove:]
22 0x1b730790 PostPhotoViewController Release 3 00:19.254.033 0 UIKit -[UIStoryboardSegue dealloc]
23 0x1b730790 PostPhotoViewController Release 2 00:19.254.037 0 UIKit _UIApplicationHandleEvent
24 0x1b730790 PostPhotoViewController Release 1 00:19.254.047 0 UIKit -[UIStoryboardScene dealloc]
25 0x1b730790 PostPhotoViewController Retain 2 00:19.254.119 0 UIKit -[UINavigationController topViewController]
26 0x1b730790 PostPhotoViewController Autorelease 00:19.254.124 0 UIKit -[UINavigationController topViewController]
27 0x1b730790 PostPhotoViewController Retain 3 00:19.254.935 0 UIKit -[UINib instantiateWithOwner:options:]
28 0x1b730790 PostPhotoViewController Retain 4 00:19.254.944 0 UIKit +[UIProxyObject addMappingFromIdentifier:toObject:forCoder:]
29 0x1b730790 PostPhotoViewController Retain 5 00:19.254.950 0 UIKit -[UINib instantiateWithOwner:options:]
30 0x1b730790 PostPhotoViewController Retain 6 00:19.254.957 0 UIKit +[UIProxyObject addMappingFromIdentifier:toObject:forCoder:]
31 0x1b730790 PostPhotoViewController Retain 7 00:19.254.993 0 UIKit -[UIProxyObject initWithCoder:]
32 0x1b730790 PostPhotoViewController Retain 8 00:19.254.994 0 UIKit -[UIRuntimeConnection initWithCoder:]
33 0x1b730790 PostPhotoViewController Retain 9 00:19.255.282 0 UIKit -[UIRuntimeConnection initWithCoder:]
34 0x1b730790 PostPhotoViewController Retain 10 00:19.255.312 0 UIKit -[UIRuntimeConnection initWithCoder:]
35 0x1b730790 PostPhotoViewController Retain 11 00:19.263.971 0 UIKit -[UIProxyObject initWithCoder:]
36 0x1b730790 PostPhotoViewController Retain 12 00:19.263.971 0 UIKit -[UIRuntimeConnection initWithCoder:]
37 0x1b730790 PostPhotoViewController Retain 13 00:19.264.922 0 UIKit UINibDecoderDecodeObjectForValue
38 0x1b730790 PostPhotoViewController Retain 14 00:19.264.924 0 UIKit UINibDecoderDecodeObjectForValue
39 0x1b730790 PostPhotoViewController Retain 15 00:19.264.939 0 UIKit UINibDecoderDecodeObjectForValue
40 0x1b730790 PostPhotoViewController Retain 16 00:19.264.941 0 UIKit UINibDecoderDecodeObjectForValue
41 0x1b730790 PostPhotoViewController Release 15 00:19.265.032 0 UIKit -[UINib instantiateWithOwner:options:]
42 0x1b730790 PostPhotoViewController Release 14 00:19.265.046 0 UIKit +[UIProxyObject removeMappingsForCoder:]
43 0x1b730790 PostPhotoViewController Release 13 00:19.265.049 0 UIKit +[UIProxyObject removeMappingsForCoder:]
44 0x1b730790 PostPhotoViewController Release 12 00:19.265.060 0 UIKit -[UINibDecoder finishDecoding]
45 0x1b730790 PostPhotoViewController Release 11 00:19.265.061 0 UIKit -[UINibDecoder finishDecoding]
46 0x1b730790 PostPhotoViewController Release 10 00:19.265.076 0 UIKit -[UINibDecoder finishDecoding]
47 0x1b730790 PostPhotoViewController Release 9 00:19.265.077 0 UIKit -[UINibDecoder finishDecoding]
48 0x1b730790 PostPhotoViewController Release 8 00:19.265.095 0 UIKit -[UINibDecoder finishDecoding]
49 0x1b730790 PostPhotoViewController Release 7 00:19.265.103 0 UIKit -[UIRuntimeConnection dealloc]
50 0x1b730790 PostPhotoViewController Release 6 00:19.265.109 0 UIKit -[UINibDecoder finishDecoding]
51 0x1b730790 PostPhotoViewController Release 5 00:19.265.118 0 UIKit -[UIRuntimeConnection dealloc]
52 0x1b730790 PostPhotoViewController Release 4 00:19.265.126 0 UIKit -[UIRuntimeConnection dealloc]
53 0x1b730790 PostPhotoViewController Release 3 00:19.265.133 0 UIKit -[UIRuntimeConnection dealloc]
54 0x1b730790 PostPhotoViewController Release 2 00:19.265.548 0 Foundation -[NSAutoreleasePool drain]
55 0x1b730790 PostPhotoViewController Retain 3 00:19.292.511 0 UIKit -[UINavigationController topViewController]
56 0x1b730790 PostPhotoViewController Autorelease 00:19.292.517 0 UIKit -[UINavigationController topViewController]
57 0x1b730790 PostPhotoViewController Retain 4 00:19.297.581 0 UIKit -[UINavigationController topViewController]
58 0x1b730790 PostPhotoViewController Autorelease 00:19.297.585 0 UIKit -[UINavigationController topViewController]
59 0x1b730790 PostPhotoViewController Retain 5 00:19.297.598 0 UIKit -[UINavigationController _startTransition:fromViewController:toViewController:]
60 0x1b730790 PostPhotoViewController Release 4 00:19.297.619 0 UIKit -[UINavigationController _startTransition:fromViewController:toViewController:]
61 0x1b730790 PostPhotoViewController Retain 5 00:19.297.957 0 UIKit -[UINavigationController topViewController]
62 0x1b730790 PostPhotoViewController Autorelease 00:19.297.958 0 UIKit -[UINavigationController topViewController]
63 0x1b730790 PostPhotoViewController Retain 6 00:19.298.000 0 UIKit -[UIResponder becomeFirstResponder]
64 0x1b730790 PostPhotoViewController Release 5 00:19.298.015 0 UIKit -[UIResponder becomeFirstResponder]
65 0x1b730790 PostPhotoViewController Release 4 00:19.302.098 0 QuartzCore CA::AutoreleasePool::~AutoreleasePool()
66 0x1b730790 PostPhotoViewController Release 3 00:19.302.117 0 QuartzCore CA::AutoreleasePool::~AutoreleasePool()
67 0x1b730790 PostPhotoViewController Release 2 00:19.302.696 0 QuartzCore CA::AutoreleasePool::~AutoreleasePool()
68 0x1b730790 PostPhotoViewController Release 1 00:19.303.120 0 QuartzCore CA::AutoreleasePool::~AutoreleasePool()
69 0x1b730790 PostPhotoViewController Retain 2 00:19.651.789 0 UIKit -[UINavigationController topViewController]
70 0x1b730790 PostPhotoViewController Autorelease 00:19.651.789 0 UIKit -[UINavigationController topViewController]
71 0x1b730790 PostPhotoViewController Retain 3 00:19.651.808 0 UIKit -[UINavigationController topViewController]
72 0x1b730790 PostPhotoViewController Autorelease 00:19.651.809 0 UIKit -[UINavigationController topViewController]
73 0x1b730790 PostPhotoViewController Retain 4 00:19.651.854 0 UIKit -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:]
74 0x1b730790 PostPhotoViewController Release 3 00:19.651.862 0 UIKit -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:]
75 0x1b730790 PostPhotoViewController Release 2 00:19.651.904 0 GraphicsServices GSEventRunModal
76 0x1b730790 PostPhotoViewController Release 1 00:19.651.905 0 GraphicsServices GSEventRunModal
77 0x1b730790 PostPhotoViewController Retain 2 00:20.841.683 0 UIKit -[UINavigationController topViewController]
78 0x1b730790 PostPhotoViewController Autorelease 00:20.841.684 0 UIKit -[UINavigationController topViewController]
79 0x1b730790 PostPhotoViewController Retain 3 00:20.841.704 0 UIKit -[UINavigationController topViewController]
80 0x1b730790 PostPhotoViewController Autorelease 00:20.841.705 0 UIKit -[UINavigationController topViewController]
81 0x1b730790 PostPhotoViewController Retain 4 00:20.841.706 0 UIKit -[UINavigationController _popViewControllerWithTransition:allowPoppingLast:]
82 0x1b730790 PostPhotoViewController Autorelease 00:20.841.707 0 UIKit -[UINavigationController _popViewControllerWithTransition:allowPoppingLast:]
83 0x1b730790 PostPhotoViewController Retain 5 00:20.841.716 0 UIKit -[UINavigationController setDisappearingViewController:]
84 0x1b730790 PostPhotoViewController Release 4 00:20.841.720 0 UIKit _popViewControllerNormal
85 0x1b730790 PostPhotoViewController Retain 5 00:20.841.732 0 UIKit -[UIViewController removeChildViewController:notifyDidMove:]
86 0x1b730790 PostPhotoViewController Release 4 00:20.841.733 0 UIKit -[UIViewController removeChildViewController:notifyDidMove:]
87 0x1b730790 PostPhotoViewController Release 3 00:20.843.840 0 UIKit _UIApplicationHandleEvent
88 0x1b730790 PostPhotoViewController Release 2 00:20.843.841 0 UIKit _UIApplicationHandleEvent
89 0x1b730790 PostPhotoViewController Release 1 00:20.843.842 0 UIKit _UIApplicationHandleEvent
90 0x1b730790 PostPhotoViewController Retain 2 00:20.844.155 0 UIKit -[UINavigationController _startTransition:fromViewController:toViewController:]
91 0x1b730790 PostPhotoViewController Release 1 00:20.844.178 0 UIKit -[UINavigationController _startTransition:fromViewController:toViewController:]
92 0x1b730790 PostPhotoViewController Retain 2 00:20.845.394 0 UIKit -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:]
93 0x1b730790 PostPhotoViewController Release 1 00:20.845.396 0 UIKit -[UINavigationController setDisappearingViewController:]
94 0x1b730790 PostPhotoViewController Retain 2 00:20.845.410 0 UIKit -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:]
95 0x1b730790 PostPhotoViewController Release 1 00:20.845.429 0 UIKit -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:]
96 0x1b730790 PostPhotoViewController Release 0 00:20.845.437 0 UIKit -[UINavigationController navigationTransitionView:didEndTransition:fromView:toView:]
97 0x1b730790 PostPhotoViewController Zombie -1 00:23.145.572 0 UIKit -[UITabBarController _tabBarItemClicked:]