如下的资料是关于ios对图像进行压缩的内容。
{
CGSize imageSize = image.size;
CGFloat width = imageSize.width;
CGFloat height = imageSize.height;
if (width <= newSize.width && height <= newSize.height){
return image;
}
if (width == 0 || height == 0){
return image;
}
CGFloat widthFactor = newSize.width / width;
CGFloat heightFactor = newSize.height / height;
CGFloat scaleFactor = (widthFactor