iOS 获取网络图片的尺寸

// 1、直接获取

NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:serverUrl]];
UIImage *showimage = [UIImage imageWithData:data];
DDLOG(@"w = %f,h = %f",showimage.size.width,showimage.size.height);
CGFloat scale = showimage.size.height/showimage.size.width;
self.scrollView.contentSize = CGSizeMake(MSWIDTH, MSWIDTH * scale);

https://blog.csdn.net/gf771115/article/details/102805361

我是直接用data拿到了,其他方法用的时候再说吧

 let data = try Data.init(contentsOf: localPath)

 var showImage = UIImage.init(data: data)

 print(showImage?.size)