iPhone，addSubView不会调用willViewAppear？ [英] iPhone, addSubView doesn't call willViewAppear?

问题描述

我正在使用 -addSubView 添加视图。我也在其他地方使用视图和 presentModalViewController 。

I'm adding a view with -addSubView. I'm also using the view elsewhere and presentModalViewController.

-viewWillAppear 使用presentModalViewController调用，但不调用addSubView。

-viewWillAppear is called with presentModalViewController but not with addSubView.

毫无疑问这是显而易见的事情？

No doubt this is something obvious ?

推荐答案

viewWillAppear：当父视图控制器呈现另一个视图控制器时调用>（例如，通过 pushViewController：animated：或 presentModalViewController：animated：）。当您手动调用 addSubview时，它永远不会被调用：。

viewWillAppear: is called by the parent view controller when it presents another view controller (e.g. by pushViewController:animated: or presentModalViewController:animated:). It is never called when you manually call addSubview:.

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