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