如何在UINavigationController中获取弹出视图的通知? [英] How to get notified of popped view in UINavigationController?
问题描述
当我们到达某个 UIViewController
UINavigationController 后面的按钮时,我想执行一个动作>。
I want to perform a action when the user pressed the back button on my UINavigationController
when arrived at a certain UIViewController
.
不幸的是,它看起来像 UINavigationControllerDelegate
没有任何方法可以通知视图的弹出。
Unfortunately it looks like UINavigationControllerDelegate
doesn't have any methods to get notified of the popping of views.
作为一种解决方法,我现在在 viewDidDisappear
方法中的操作,只有当$ code>动画是 YES
。这是有用的,但这有点丑陋。
As a workaround I now have in the viewDidDisappear
method my action, that only gets fired when animated
is YES
. This works, but it's a bit ugly.
我该怎么做?
推荐答案
当viewWillDisappear或在某些UIViewController的viewWillAppear上设置逻辑时,您可以调用委托方法。
You can either call a delegate method when viewWillDisappear or set logic on viewWillAppear for certain UIViewController.
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