新建一个image的分类
#import "UIImage+CircleImage.h"
@implementation UIImage (CircleImage)
- (UIImage *)circleImage{
// no 代表透明
UIGraphicsBeginImageContextWithOptions(self.size, NO, 0.0);
// 获得上下文
CGContextRef ctx = UIGraphicsGetCurrentContext();
// 添加一个圆
CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
CGContextAddEllipseInRect(ctx, rect);
// 裁剪
CGContextClip(ctx);
// 将图片画上去
[self drawInRect:rect];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
调用
[self.profileImage sd_setImageWithURL:[NSURL URLWithString:model.profile_image] placeholderImage:[UIImage imageNamed:@"defaultUserIcon"] completed:^(UIImage * _Nullable image, NSError * _Nullable error, SDImageCacheType cacheType, NSURL * _Nullable imageURL) {
self.profileImage.image = [image circleImage];
}];
