添加填充到UIView [英] Adding padding to an UIView

问题描述

我正在寻找一种方法来向UIView添加 padding 属性。理想情况下，我想避免子类化并将其放入类别中。用法如下：

I'm looking for a way to add a padding property to an UIView. Ideally, I would like to avoid subclassing and putting it in a category. The usage would be something like:

myview.padding = UIEdgeInsetsMake(10, 10, 10, 10);

并且可能还有 paddingBox 属性这将返回 CGRect ，描述内部填充框的大小和位置。

And maybe have a paddingBox property as well which would return a CGRect describing the size and position of the inner padding box.

现在，如何实现在类似的东西。我最初使用 bounds ，但不幸的是 bounds 的大小与<$ c的大小相关联$ c> frame （总是一样的）只有坐标可以不同。

Now, how would one implement in a category something like that. I initially though of using bounds, but unfortunately the size of the bounds is linked to the size of the frame (always the same) only the coordinates can differ.

推荐答案

这一般是通过在视图中设置边界来完成。因此，如果你想要一个10的插图你可以做：

This is generally done by setting the bounds within the view. So if you wanted an inset of 10 all round you could do:

view.bounds = CGRectInset(view.frame, 10.0f, 10.0f);

边界定义视图相对于框架的可绘制区域。所以这应该实际上是一个填充。然后你可以从边界获得'paddingBox'。

The bounds defines the drawable area of the view, relative to the frame. So this should give in effect a padding. You can then get the 'paddingBox' just from the bounds.

希望这会有所帮助！ ：）

Hope this helps! :)

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