White flash when setImageWithUrl displays a cached image

Question

Using AFNetworking 2.0's method setImageWithUrl, I set an image in an imageView located in a UITableViewCell. It works fine when the image displayed is first downloaded and then set. If, however, the image is available locally (has been cached) when it's set, there's a quick white flash before it is displayed.

Do you know how to avoid this?

Steps to reproduce:

1. Set image (image will be cached)
2. Close application
3. Start application
4. Set (the now cached) image

Code for setting the image:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

    myCell *cell = (myCell *)[tableView dequeueReusableCellWithIdentifier:@"imageCell"];

    [cell.myImageView setImageWithURLRequest:[NSURLRequest requestWithURL:myImageUrl] placeholderImage:nil success:^(NSURLRequest *request, NSHTTPURLResponse *response, UIImage *image) {
        cell.myImageView.image = image;

    } failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error) {
        NSLog(@"Failed");
    }];

    cell.selectionStyle = UITableViewCellSelectionStyleNone;
    return cell;  
}

Answer 1

If anyone's bumping into the same issue, here's how I solved it:

In the success block, replace

cell.myImageView.image = image;

with

if (request) {
    [UIView transitionWithView:cell.myImageView
                      duration:0.8f
                       options:UIViewAnimationOptionTransitionCrossDissolve
                    animations:^{[cell.myImageView setImage:image];}
                    completion:NULL];
}else{
    [cell.myImageView setImageWithURL:myImageURL];
}

Voilà, no more ugly flashes!

Credits to this answer for leading me to the right track.