经过一天多的时间阅读问题并尝试应用答案，我必须提出更多帮助。
我的ios6应用程序在主屏幕上有一个表格视图。选择一个单元格后，我们使用UINavigationBar访问一个视图控制器，该控制器有一个自定义的“后退”按钮，调用此方法：
- (IBAction)goback:(id)sender {
[SVProgressHUD dismiss];
if(self.presentingViewController) {
NSLog(@" Dismissing View Controller: %@.", self.presentingViewController);
[self dismissViewControllerAnimated:NO completion:nil];
}
}
通常，此方法效果很好。如果我们在加载内容之后非常快速地按下“后退”按钮（使用json和AFNetworking），它只会崩溃。 5秒后，后退按钮工作正常，但如果我们在加载后立即点击它，我们会收到此错误：
[28103:c07] Dismissing View Controller: <UITabBarController: 0x7578170>.
[28103:c07] *** -[CustomViewController respondsToSelector:]: message sent to deallocated instance 0x1257cf70
显然，这是一个记忆问题。这就是我试图追踪“僵尸”的原因。分析我的应用程序，我收到此报告。它表明有太多的释放，但我不知道哪一个是罪魁祸首。
有谁知道如何解释这份报告？
这条线是否正常？
84 0x10291ff0 Release 3 MyApp __destroy_helper_block_
如果需要进一步的信息，请告诉我。我感谢你的帮助。
# Address Event Type RefCt Responsible Library Responsible Caller
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42 0x10291ff0 Retain 31 UIKit UINibDecoderDecodeObjectForValue
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44 0x10291ff0 Retain 33 UIKit UINibDecoderDecodeObjectForValue
45 0x10291ff0 Release 32 UIKit -[UINib instantiateWithOwner:options:]
46 0x10291ff0 Release 31 UIKit +[UIProxyObject removeMappingsForCoder:]
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48 0x10291ff0 Release 29 UIKit -[UINibDecoder finishDecoding]
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57 0x10291ff0 Release 20 UIKit -[UIRuntimeConnection dealloc]
58 0x10291ff0 Release 19 UIKit -[UIRuntimeConnection dealloc]
59 0x10291ff0 Release 18 UIKit -[UIRuntimeConnection dealloc]
60 0x10291ff0 Release 17 UIKit -[UIRuntimeConnection dealloc]
61 0x10291ff0 Release 16 UIKit -[UIRuntimeConnection dealloc]
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72 0x10291ff0 Release 5 Foundation -[NSAutoreleasePool drain]
73 0x10291ff0 Retain 6 MyApp -[SSPullToRefreshView initWithScrollView:delegate:]
74 0x10291ff0 Release 5 MyApp -[SSPullToRefreshView initWithScrollView:delegate:]
75 0x10291ff0 Retain 6 UIKit -[UIWindow _setRotatableClient:toOrientation:updateStatusBar:duration:force:isRotating:]
76 0x10291ff0 Retain 7 libsystem_sim_blocks.dylib _Block_object_assign
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78 0x10291ff0 Release 7 Foundation __NSFireDelayedPerform
79 0x10291ff0 Release 6 UIKit -[UIStoryboardSegue dealloc]
80 0x10291ff0 Release 5 Foundation __NSFireDelayedPerform
81 0x10291ff0 Release 4 UIKit -[UIStoryboardScene dealloc]
82 0x10291ff0 Retain 5 UIKit __91-[UIWindowController transition:fromViewController:toViewController:target:didEndSelector:]_block_invoke_0238
83 0x10291ff0 Release 4 UIKit __destroy_helper_block_250
84 0x10291ff0 Release 3 MyApp __destroy_helper_block_
85 0x10291ff0 Release 2 UIKit -[UIWindowController transitionViewDidComplete:fromView:toView:removeFromView:]
86 0x10291ff0 Retain 3 UIKit -[UIViewController _dismissViewControllerWithTransition:from:completion:]
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89 0x10291ff0 Retain 6 UIKit -[UIApplication _removeViewControllerForLockingStatusBarTintColor:]
90 0x10291ff0 Release 5 UIKit -[UIApplication _removeViewControllerForLockingStatusBarTintColor:]
91 0x10291ff0 Release 4 UIKit -[UIApplication _removeViewControllerForLockingStatusBarTintColor:]
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96 0x10291ff0 Zombie -1 UIKit -[UIScrollView(UIScrollViewInternal) _delegateScrollViewAnimationEnded]
- 编辑 -
以下是我如何使用AFNetworking在我的应用的每个页面上检索数据：
[[APIClient sharedClient] getPath:request
parameters:params
success:^(AFHTTPRequestOperation *operation, id responseObject) {
[SVProgressHUD dismiss];
[self.pullToRefreshView finishLoading];
... read data ...
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
[SVProgressHUD showErrorWithStatus:error.localizedDescription];
}];
没有will / didUnload方法，只有这一个：
- (void)viewWillDisappear:(BOOL)animated{
[SVProgressHUD dismiss];
[_pubnub unsubscribeFromChannel: self.pro.channel];
}
答案 0 :(得分：0)
我认为这是因为AFNetworking委托方法。 您可能会使用AFNetworking委托方法从后端获取内容。 释放CustomViewController时，您可以清除它的委托。 因此，请将以下代码snap添加到CustomViewContoller的dealloc方法。
- (void)dealloc
{
...
networkingInstance.delegate = nil;
[super dealloc];
}