将子视图添加到UIImageView，它是IB中UIViewController的视图出口 [英] Add a subview to a UIImageView that is the view outlet of a UIViewController in IB

问题描述

我在.xib文件中有一个UIViewController对象。我添加了一个UIImageView，然后尝试添加一个按钮作为UIImageView的子视图。它取代了UIImageView。如果两者都是UIView的子视图，它工作正常。是什么赋予了？我认为这可行，因为UIImageView是UIView的子类？

I have a UIViewController object in a .xib file. I add a UIImageView to it, and then try to add a button as a subview of the UIImageView. It instead replaces the UIImageView. It works fine if both are subviews of a UIView. What gives? I thought this would work since UIImageView is a subclass of UIView?

推荐答案

只有Apple知道。

但是，请看这里找一个解决方法：

However, look at here for a workaround:

Apple Interface Builder：将子视图添加到UIImageView

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