OC-设置不同边的圆角

typedef NS_ENUM(NSInteger,UILayoutCornerRadiusType) {
    UILayoutCornerRadiusTop = 0,
    UILayoutCornerRadiusLeft = 1,
    UILayoutCornerRadiusBottom = 2,
    UILayoutCornerRadiusRight = 3,
    UILayoutCornerRadiusAll = 4,
    UILayoutCornerdeleteTopleft = 5,
};

@interface UIView (CornerRadius)
/**
 
 @author
 设置不同边的圆角
 @param radiusType 圆角类型
 @param cornerRadius 圆角半径
 */
-(void)UILayoutCornerRadiusType:(UILayoutCornerRadiusType)radiusType withCornerRadius:(CGFloat)cornerRadius;
@end

#import "UIView+CornerRadius.h"

@implementation UIView (CornerRadius)

-(void)UILayoutCornerRadiusType:(UILayoutCornerRadiusType)sideType withCornerRadius:(CGFloat)cornerRadius
{
    
    CGSize cornerSize = CGSizeMake(cornerRadius, cornerRadius);
    UIBezierPath *maskPath;
    
    switch (sideType) {
        case UILayoutCornerRadiusTop:
        {
            maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                             byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerTopRight)
                                                   cornerRadii:cornerSize];
        }
            break;
        case UILayoutCornerRadiusLeft:
        {
            maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                             byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerBottomLeft)
                                                   cornerRadii:cornerSize];
        }
            break;
        case UILayoutCornerRadiusBottom:
        {
            maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                             byRoundingCorners:(UIRectCornerBottomLeft|UIRectCornerBottomRight)
                                                   cornerRadii:cornerSize];
        }
            break;
        case UILayoutCornerRadiusRight:
        {
            maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                             byRoundingCorners:(UIRectCornerTopRight|UIRectCornerBottomRight)
                                                   cornerRadii:cornerSize];
        }
            break;
        case UILayoutCornerdeleteTopleft:
        {
            maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                             byRoundingCorners:(UIRectCornerTopRight|UIRectCornerBottomRight|UIRectCornerBottomLeft)
                                                   cornerRadii:cornerSize];
        }
            break;
        default:
        {
            maskPath = [UIBezierPath bezierPathWithRoundedRect:self.bounds
                                             byRoundingCorners:UIRectCornerAllCorners
                                                   cornerRadii:cornerSize];
        }
            break;
    }
    
    CAShapeLayer * maskLayer = [CAShapeLayer layer];
    maskLayer.frame = self.bounds;
    maskLayer.path = maskPath.CGPath;
    
    self.layer.mask = maskLayer;
    
    [self.layer setMasksToBounds:YES];
}
@end