I have been using the UICollectionviewController. So , we try to make a transition to another screen by pressing the cell . But , the text that has been put in a cell will want to disappear when you press the cell . Could you tell me the reason for this ?・ViewController func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { let cell:CustomCell = collectionView.dequeueReusableCellWithReuseIdentifier(cell, forIndexPath: indexPath) as! CustomCell cell.category.text = BBBBBB ; cell.category.backgroundColor = UIColor.blueColor(); cell.date.text = 2016-03-26; cell.title.text = AAAAAAAAAAAA; cell.imgSample.image = UIImage(named: CCCCC.png) cell.backgroundColor = UIColor.whiteColor() / cell.layer.masksToBounds = false; cell.layer.shadowOffset = CGSizeMake(0.0, 0.3); cell.layer.shadowOpacity = 0.2; cell.layer.shadowRadius = 0.5; return cell } func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollecti