NSNotificationCenter的帖子导致“EXC_BAD_ACCESS”例外 [英] Post of NSNotificationCenter causing "EXC_BAD_ACCESS" exception

问题描述

UIViewController 将自身添加到默认中心：

A UIViewController adds itself to the default center:

[[NSNotificationCenter defaultCenter]
 addObserver:self
 selector:@selector(editFood)
 name:@"editFood"
 object:nil];

然后一个 UITableView 委托NSObject发布一个 NSNotification ：

Then a UITableView delegate NSObject posts a NSNotification:

[[NSNotificationCenter defaultCenter]
 postNotificationName:@"editFood"
 object:self];

在运行时，它会出现 EXC_BAD_ACCESS 异常。

During run time it get a EXC_BAD_ACCESS exception.

defaultCenter 是否在某个地方发布？当我从UIViewController向UIViewController发布通知时，同样的概念也有效，但这不重要，对吗？

Is the defaultCenter getting released somewhere? The same concept works when I post a notification to a UIViewController from a UIViewController, but that shouldn't matter, right?

推荐答案

您的一位订阅者已被取消分配。确保在dealloc中调用 [[NSNotificationCenter defaultCenter] removeObserver：self] （如果不是更早）。

One of your subscribers has been deallocated. Make sure to call [[NSNotificationCenter defaultCenter] removeObserver:self] in your dealloc (if not sooner).

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