如何从SDWebImage获取图像大小？

Question

I am using SDWebImage to get image from url. I want to get the size of remote image in order to do some layout calculation. Since I only know the url of the image, how can I get it from SDWebImage object?

Answer 1

please try this one, Its may be work for you

-(UIImage *)downloadImageAsync:(NSString *)imageKey
 {
     NSLog(@"image key : %@",imageKey);
      __block UIImage *returnedImage;
     SDWebImageManager *manager = [SDWebImageManager sharedManager];
     [manager downloadWithURL:[NSURL URLWithString:imageKey] options:0 progress:^(NSUInteger receivedSize, long long expectedSize){
    NSLog(@"received size %d expected size %lld", receivedSize, expectedSize);

    }completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType,BOOL finished){
      if(image && finished) {
        returnedImage = image;
      }
   }];

   if(returnedImage == nil) {
      NSLog(@"Returned Image Nil");
   }
    return returnedImage;
}