iOS UIImage设置圆角

新建UIImage分类如下：

@interface UIImage (RoundedRectImage)
- (UIImage *)setRoundedCorners:(CGFloat)radius andSize:(CGSize)size;
@end

#import "UIImage+RoundedRectImage.h"

@implementation UIImage (RoundedRectImage)

- (UIImage *)setRoundedCorners:(CGFloat)radius andSize:(CGSize)size{
    CGRect rect = CGRectMake(0, 0, size.width, size.height);
    UIGraphicsBeginImageContextWithOptions(size, NO, [UIScreen mainScreen].scale);
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    UIBezierPath * path = [UIBezierPath bezierPathWithRoundedRect:rect byRoundingCorners:UIRectCornerAllCorners cornerRadii:CGSizeMake(radius, radius)];
    CGContextAddPath(ctx,path.CGPath);
    CGContextClip(ctx);
    [self drawInRect:rect];
    CGContextDrawPath(ctx, kCGPathFillStroke);
    UIImage * newImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return newImage;
}

来源：CSDN

作者：_Brilliance

链接：https://blog.csdn.net/qq_28379951/article/details/103628149