如何在uiview中添加边框？ [英] How to add a border inside a uiview?

问题描述

我有一个uiview，我想在这个UIVIew大约75％的UIView中添加一个边框。任何人都可以为此提供帮助。我可以得到解决方案在外面绘制边框。

I am having a uiview and I would like to add a border iside this UIVIew approximately 75 % of UIView. Could any one help with this. I could get the solution to draw the border outside.

推荐答案

那么你可以设置一个小的属性来对齐与外界的边界。它绘制与内部对齐，因为UIViews默认绘图操作在其边界内绘制。

Well there isn't simply a little property you can set to align the border to the outside. It draws aligned to the inside because the UIViews default drawing operations draw within its bounds.

想到的最简单的解决方案是扩展UIView的大小应用边框时的边框宽度：

The simplest solution that comes to mind would be to expand the UIView by the size of the border width when applying the border:

CGFloat borderWidth = 2.0f;

self.frame = CGRectInset(self.frame, -borderWidth, -borderWidth);
self.layer.borderColor = [UIColor yellowColor].CGColor;
self.layer.borderWidth = borderWidth;

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