只使用Quartzcore / layer为UIView添加顶部边框？ [英] Add just a top border to an UIView with Quartzcore/layer?

问题描述

是否可以在UIView之上添加边框，如果是，请问怎么样？

Is it possible to add a border just on top of a UIView, if so, how please?

推荐答案

我'为我找到解决方案，这里有一些技巧：

i've find solution for me, here's the tricks :

CGSize mainViewSize = self.view.bounds.size;
CGFloat borderWidth = 1;
UIColor *borderColor = [UIColor colorWithRed:37.0/255 green:38.0/255 blue:39.0/255 alpha:1.0];
UIView *topView = [[UIView alloc] initWithFrame:CGRectMake(0.0, 0.0, mainViewSize.width, borderWidth)];
topView.opaque = YES;
topView.backgroundColor = borderColor;
topView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleBottomMargin;        
[self.view addSubview:topView];

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