模态关闭后未调用UIViewController的viewDidAppear [英] UIViewController's viewDidAppear not being called after a modal close

问题描述

UIViewController(视图A)通过将其作为模式控件调用来调用另一个视图控制器(视图B).

A UIViewController (View A) invokes another view controller (View B) by invoking it as a modal control.

[self presentModalViewController:ViewB animation:TRUE];

[self presentModalViewController:ViewB animated:TRUE];

视图B通过调用而存在:

And View B exists by invoking:

[self dismissModalViewControllerAnimated:TRUE];

[self dismissModalViewControllerAnimated:TRUE];

发生这种情况时，所有内容看起来都正确，除了不调用View A的viewWillAppear和viewDidAppear(尽管它们在应用程序初始化期间被调用).奇怪的是...我相信香港专业教育学院以前曾做过此事，但我不确定现在正在发生什么.

When this occurs everything looks right EXCEPT that View A's viewWillAppear and viewDidAppear does not get called (they are called during app init though). Weird thing is... i believe ive done this before, but im not sure what is going on now.

我做的事情显然有什么不对吗? 谢谢！

Is there anything obviously wrong that im doing? Thanks!

*更新* 我刚刚了解到，此行为仅在UIModalTransitionStylePartialCurl过渡类型下发生.对于所有其他过渡类型，父级视图控制器可以很好地获取其viewDidAppear消息.

* UPDATE * I just now learned that this behavior only occurs with the UIModalTransitionStylePartialCurl transition type. For all other transition types the parent view-controller gets its viewDidAppear message just fine.

那我现在该怎么办！?！

So now what am i suppose to do!?!

推荐答案

我只是遇到了同样的问题.

I just ran in to the same problem.

我通过添加一个委托和一个委托方法解决了它.

I solved it by adding a delegate and a delegate method.

因此，当控制器A将控制器B作为具有页面卷曲的模式视图控制器打开时，我将控制器b..delegate的实例设置为控制器a.

So when Controller A opens Controller B as a modal view controller with a page curl i set the instance of controller b's.delegate to be controller a.

在控制器B中，我添加以下内容:

In controller B i add this:

-(void) viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];

    if (delegate)
        [delegate didCloseInfoViewController];
}

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