在ARC中，我们是否需要显式发送removeObserver :?

问题描述

对于以前作为观察者添加到NSNotificationCenter的对象，我们是否必须显式发送removeObserver:?

Do we have to send removeObserver: explicitly for objects that have been added as observers to an NSNotificationCenter before?

我有点困惑，无法找到确切的答案.

I am bit confused and unable to find the exact answer for this.

请提供详细信息，包括为什么我们需要显式删除removeObserver，以及为什么编译器不将其隐式地放在类/应用程序中?

Please provide me in detail, about this including why we need to removeObserver explicitly, and why don't compiler put it implicitly in class/application?

推荐答案

是的，如果您没有观察到的类可以调用观察者的所有已释放实例，则需要调用removeObserver:.

Yes, you need to call removeObserver:, if you don't the observed class could call all deallocated instance of the observer.

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