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POJerky scrolling of UICollectionView because of text labels
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copied!<p>I have got a problem with jerky scrolling of UICollectionView. My cell consists of picture and a few text labels.</p> <p>I have tried to check what is causing this and when I disabled setting text for labels everything is smooth, when I set text for more than two labels scrolling is jerky again...</p> <p>Does anyone know how to solve it?</p> <p>Here is my code:</p> <pre><code>- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"ResultCell"; ResultCellView *cell = [collectionView dequeueReusableCellWithReuseIdentifier:CellIdentifier forIndexPath:indexPath]; if ([self.artworksSavedForLater containsObject:indexPath]) { cell.saveForLaterButton.selected = YES; } else cell.saveForLaterButton.selected = NO; Artwork *artwork = [self.dataHelper.fetchedResultsController objectAtIndexPath:indexPath]; cell.title.text = artwork.title; cell.owner.text = artwork.owner; cell.fields.text = artwork.fields; cell.numberOfViews.text = [NSString stringWithFormat:@"%@",artwork.views]; cell.numberOfLikes.text = [NSString stringWithFormat:@"%@",artwork.likes]; cell.numberOfComments.text = [NSString stringWithFormat:@"%@",artwork.comments]; cell.publishedDate.text = artwork.publishedDate; if ([artwork.hasThumbnail boolValue]) { dispatch_queue_t downloadQueue = dispatch_queue_create("imagecache", NULL); dispatch_async(downloadQueue, ^{ UIImage *productImage = [UIImage imageWithData:artwork.thumbnail]; CGSize imageSize = productImage.size; UIGraphicsBeginImageContext(imageSize); [productImage drawInRect:CGRectMake(0, 0, imageSize.width, imageSize.height)]; productImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); dispatch_async(dispatch_get_main_queue(), ^ { cell.thumbnailImage.image = productImage; cell.thumbnailImage.hidden = NO; }); }); } else { cell.thumbnailImage.hidden = YES; [self startOperationsForPhotoRecord:artwork atIndexPath:indexPath]; } return cell; </code></pre> <p>Code for my cell:</p> <pre><code>- (void)didMoveToSuperview { [super didMoveToSuperview]; self.title.font = [UIFont fontWithName:@"VerbRegular" size:14.0]; self.layer.borderColor = [UIColor colorWithWhite:0.19f alpha:1.0f].CGColor; self.layer.borderWidth = 1.0f; self.layer.rasterizationScale = [UIScreen mainScreen].scale; self.layer.shouldRasterize = YES; } - (void)prepareForReuse { [super prepareForReuse]; self.thumbnailImage.image = nil; } </code></pre>

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