Objective-C
#import <Foundation/Foundation.h>
@interface OTSCorner : NSObject
/**
* 给 UIView 某几个角添加圆角
*
* @param aView 输入view
* @param aCorners 要添加圆角的角（方向）
* @param aSize 圆角size
*/
+ (void)addCornerWithView:(UIView *)aView type:(UIRectCorner)aCorners size:(CGSize)aSize;
@end
#import "OTSCorner.h"
@implementation OTSCorner
+ (void)addCornerWithView:(UIView *)aView type:(UIRectCorner)aCorners size:(CGSize)aSize
{
// 根据矩形画带圆角的曲线
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:aView.bounds byRoundingCorners:aCorners cornerRadii:aSize];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = aView.bounds;
maskLayer.path = maskPath.CGPath;
aView.layer.mask = maskLayer;
}
@end
Swift
import UIKit
class OTSCorner: NSObject {
/**
* 给 UIView 某几个角添加圆角
*
* @param aView 输入view
* @param aCorners 要添加圆角的角（方向）
* @param aSize 圆角size
*/
class func addCornerWithView(aView : UIView, aCorners : UIRectCorner, aSize : CGSize) ->Void
{
// 根据矩形画带圆角的曲线
let maskPath = UIBezierPath.init(roundedRect: aView.bounds, byRoundingCorners: aCorners, cornerRadii: aSize)
let maskLayer = CAShapeLayer()
maskLayer.frame = aView.bounds
maskLayer.path = maskPath.CGPath
aView.layer.mask = maskLayer
}
}
Swift 测试
let view = UIView()
view.frame = CGRectMake(100, 100, 100, 100)
view.backgroundColor = UIColor.redColor()
self.view.addSubview(view)
OTSCorner.addCornerWithView(view, aCorners:[.TopLeft, .TopRight, .BottomLeft, .BottomRight], aSize: CGSizeMake(20, 20))
测试效果
D8592B7C-84C2-4BA5-ACAF-BDE3E08A2584.png
