UIImgage+antialiasing

UIImgage+antialiasing.m

#import "UIImage+Antialiase.h"

@implementation UIImage (Antialiase)

//创建抗锯齿头像
- (UIImage*)antialiasedImage{
    return [self antialiasedImageOfSize:self.size scale:self.scale];
}

//创建抗锯齿头像,并调整大小和缩放比。
- (UIImage*)antialiasedImageOfSize:(CGSize)size scale:(CGFloat)scale{
    UIGraphicsBeginImageContextWithOptions(size, NO, scale);
    [self drawInRect:CGRectMake(1, 1, size.width-2, size.height-2)];
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}

@end