摘要：
1.等比率缩放- (UIImage *)scaleImage:(UIImage *)image toScale:(float)scaleSize{UIGraphicsBeginImageContext(CGSizeMake(image.size.width * scaleSize, image.size.height * scaleSize);[image drawInRect:CGRectMake(0, 0, image.size.width * scaleSize, image.size.height * scaleSize)];UIImage *scaledImage = UIGraph 阅读全文
