gistfile1.txt

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
//some code
            [message.image getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
              image = [UIImage imageWithData:data];
                cell.photoImageView.image = image; //This doesnt get update. but i cant reload this indexPath cause i will create a infinite loop;
                self.testImageView.image = image; //This get update.
            }];
            
            //other code
}