UIView的任意圆角

今天在做项目的时候,遇到一个问题,grouped类型的tableview 怎么样才能让他们的一个view 其中一个角圆角?

如上图所示,其实我是用UILabel,但是箭头的位置总是尖的不太好看.设置layer.border 又让其他的角也圆了.有没有办法只让指定的角圆,并圆成合适的大小呢?

答案是有的..下面不废话,直接上代码了.

新建一个category  :　UIVew+Roundify

 //
 //  UIVew+Roundify.h
 //  TNS4Golfers
 //
 //  Created by yingkong1987 on 13-9-14.
 //  Copyright (c) 2013年 yingkong1987. All rights reserved.
 //

 @interface UIView (Roundify)
 -(void)addRoundedCorners:(UIRectCorner)corners withRadii:(CGSize)radii;
 -(CALayer*)maskForRoundedCorners:(UIRectCorner)corners withRadii:(CGSize)radii;
 @end

 //
 //  UIVew+Roundify.m
 //  TNS4Golfers
 //
 //  Created by yingkong1987 on 13-9-14.
 //  Copyright (c) 2013年 yingkong1987. All rights reserved.
 //

 #import "UIVew+Roundify.h"

 @implementation UIView (Roundify)
 -(void)addRoundedCorners:(UIRectCorner)corners withRadii:(CGSize)radii {
     CALayer *tMaskLayer = [self maskForRoundedCorners:corners withRadii:radii];
     self.layer.mask = tMaskLayer;
 }

 -(CALayer*)maskForRoundedCorners:(UIRectCorner)corners withRadii:(CGSize)radii {
     CAShapeLayer *maskLayer = [CAShapeLayer layer];
     maskLayer.frame = self.bounds;

     UIBezierPath *roundedPath = [UIBezierPath bezierPathWithRoundedRect:
                                                                  maskLayer.bounds byRoundingCorners:corners cornerRadii:radii];
     maskLayer.fillColor = [[UIColor whiteColor] CGColor];
     maskLayer.backgroundColor = [[UIColor clearColor] CGColor];
     maskLayer.path = [roundedPath CGPath];

     return maskLayer;
 }
 @end

然后使用如下如:

效果出来了:

当然如果有更好更快捷的做法,欢迎大家拍砖,并指教指教小弟!~~小弟初学iOS