title: How to set progressive image in iOS using SDWebImage?
body: <p>I tried to load an image progressively in my app. Basically what I tried is while the image is loading, I want to show the fully loaded image from blurred state. I tried,</p>
  
  <pre><code>SDWebImageManager *manager = [SDWebImageManager sharedManager];
  [manager downloadImageWithURL:[NSURL URLWithString:@"https://profile.microsoft.com/RegsysProfileCenter/Images/personal_info.jpg"]
                        options:0
                       progress:^(NSInteger receivedSize, NSInteger expectedSize) {
                           [self.profileBtn setImage:[UIImage imageWithData:[NSData dataWithBytes:&amp;receivedSize length:sizeof(receivedSize)] scale:15] forState:UIControlStateNormal];
                       }
                      completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
                          if (image) {
                              // [self.profileBtn setImage:image forState:UIControlStateNormal];
                          }
                      }];
  </code></pre>
  
  <p>Is it possible to load an image progressively using SDWebImage. Please help me with this.</p>