         
         collectionView.register(EmotionViewCell.self, forCellWithReuseIdentifier:emotionCellID)
         collectionView.dataSource = self
+        collectionView.delegate = self
     }
     
     fileprivate func prepareForToolBar(){

        cell.emotion = emotionManager.packages[indexPath.section].emotions[indexPath.item]
        return cell
    }
}




}

// MARK: - UICollectionViewDataSource && delegate
extension EmotionController : UICollectionViewDataSource , UICollectionViewDelegate{
    
    func numberOfSections(in collectionView: UICollectionView) -> Int {
        return emotionManager.packages.count
