iOS SDWebImage Cross Fade Effect UITableViewCell

ios, sdwebimage, uitableview

Solution

Looks like you are using the SDWebImageManager in a different file that is necessarily not the UITableViewController class. You can use transitionWithView but not with SDWebImageManager directly if its in a different class.

But in your table view controller class where you are using cellForRowAtIndexPath and linking the image with the imageView of UITableViewCell, you can using transitionView as below:

[UIView transitionWithView:cell.(Your Image View)
                          duration:0.5
                           options:UIViewAnimationOptionTransitionCrossDissolve
                        animations:^{

                            cell.(Your ImageView).image = [(how ever you are calling it)];


                        } completion:^(BOOL finished) {
                            //  Optionally you can do anything after the completion
                        }];

Hope this helps!

Problem

This is how i am successfully using SDWebImageManager to download the images: ``` - (void) downloadThumbnails:(NSURL *) finalUrl { SDWebImageManager *manager = [SDWebImageManager sharedManager]; [manager downloadWithURL:finalUrl options:0 progress:nil completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished) { if (image) { self.thumbnailURL = [finalUrl absoluteString]; } }]; } - (UIImage*)thumbnail { if (!self.thumbnailURL) return nil; return [[SDImageCache sharedImageCache] imageFromDiskCacheForKey:self.thumbnailURL]; } ``` How can i modify to have a cross fade effect? Cross Fade Effect is the one that makes the image showing transition slowly just like the TechCrunch iOS App. Thanks! UPDATE: If i can do anything else to have cross fade effect (other than SDWebImage) in uitableview cell than you can write it in the answer. UPDATE: I have received few answers after my last update and i am able to solve the problem partially. Using transitionWithView as in the answer below, it is working and cross fading the way i want BUT since i am using a tableivew controller that is loading more entries when it touches the bottom, it refreshes all the cells once before the new block of entries are loaded, how can i prevent this behaviour?

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