#pragma mark - 获取按尺寸压缩过的新图片+ (UIImage *)getNewImageWithImage:(UIImage *)image size:(CGFloat)tempSize{    //获取图片的宽高    CGSize imageSize = image.size;    CGFloat imgH = imageSize.height;    CGFloat imgW = imageSize.width;     if (imgH == imgW) {//如果是正方形        imgW = tempSize;        imgH = tempSize;            }else if(imgW > tempSize ){//如果宽度大于200/600                //获取图像宽度的倍数        CGFloat multiple = imgW / tempSize;        imgW = tempSize;        imgH = imgH / multiple;            }else if(imgH > tempSize ){//如果高度大于200/600                //获取图像高度的倍数        CGFloat multiple = imgH / tempSize;        imgH = tempSize;        imgW = imgW / multiple;    }    //重新赋值图片的宽高    imageSize.width = imgW;    imageSize.height = imgH;     //压缩新图片    UIGraphicsBeginImageContext(imageSize);    [image drawInRect:CGRectMake(kZero, kZero, imageSize.width, imageSize.height)];    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();    UIGraphicsEndImageContext();    return newImage;}