有没有办法动态压缩iPhone中的UIImage

Question

我已尝试使用图片大小调整插件来压缩我的应用中的图片。但它降低了清晰度并且看起来不太好。任何人都可以告诉我在我的iPhone应用程序中动态压缩图像的任何其他解决方案。

#import <Foundation/Foundation.h>

@interface UIImage (Resize)
- (UIImage*)scaleToSize:(CGSize)size;
@end


#import "UIImage+Resize.h"


// Put this in UIImageResizing.m
@implementation UIImage (Resize)

- (UIImage*)scaleToSize:(CGSize)size {
    UIGraphicsBeginImageContext(size);

    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextTranslateCTM(context, 0.0, size.height);
    CGContextScaleCTM(context, 1.0, -1.0);

    CGContextDrawImage(context, CGRectMake(0.0f, 0.0f, size.width, size.height), self.CGImage);

    UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return scaledImage;
}

@end