Button倒角，单边角，多边角

 最近有个ui的同事抱怨说她公司的前段开发动不动就让她切个小图，理由是实现不了，像下面这种小功能：

其实这也是按钮的倒圆角，并不难。上代码：

.h

#import <UIKit/UIKit.h>

 

@interface YMBtnCorner : UIButton

 

//左上角

- (void)ym_rectCorner:(CGFloat)radius conrners:(UIRectCorner)corners;

 

@end

.m

#import "YMBtnCorner.h"

 

@implementation YMBtnCorner

 

- (void)ym_rectCorner:(CGFloat)radius conrners:(UIRectCorner)corners

{

    UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds byRoundingCorners:corners cornerRadii:CGSizeMake(radius, radius)];

    

    CAShapeLayer *maskLayer = [CAShapeLayer layer];

    maskLayer.frame = self.bounds;

    maskLayer.path = maskPath.CGPath;

    

    self.layer.mask = maskLayer;

}

 

@end

用法：

    //左上

    [self.topLeftCorner ym_rectCorner:10.0 conrners:UIRectCornerTopLeft];

    //左下

    [self.bottomLeftcorner ym_rectCorner:10 conrners:UIRectCornerBottomLeft];

    //右上

    [self.topRightCorner ym_rectCorner:10 conrners:UIRectCornerTopRight];

    //右下

    [self.bottomRightCorner ym_rectCorner:10 conrners:UIRectCornerBottomRight];

    //四个角

    [self.allCorner ym_rectCorner:10 conrners:UIRectCornerAllCorners];

    //左右上角

    [self.topLeftRightCorner ym_rectCorner:10 conrners:UIRectCornerTopRight | UIRectCornerTopLeft];

    //左右下角

    [self.bottomLeftRightCorner ym_rectCorner:10 conrners:UIRectCornerBottomRight | UIRectCornerBottomLeft];

    //左上右下

    [self.topLeftBottomRight ym_rectCorner:10 conrners:UIRectCornerTopLeft | UIRectCornerBottomRight];

    //左下右上

    [self.bottomLeftTopRight ym_rectCorner:10 conrners:UIRectCornerBottomLeft | UIRectCornerTopRight];

    //左边

    [self.leftCorner ym_rectCorner:10 conrners:UIRectCornerBottomLeft | UIRectCornerTopLeft];

    //右边

    [self.rightCorner ym_rectCorner:10 conrners:UIRectCornerBottomRight | UIRectCornerTopRight];