         let layoutCV = UICollectionViewFlowLayout()
         layoutCV.scrollDirection = .Vertical
         layoutCV.itemSize = CGSizeMake(widthHightItem, widthHightItem)
+        layoutCV.sectionInset = UIEdgeInsets(top: 5, left: 0, bottom: 5, right: 0)
         
         // init collection view
         self.collectionView = UICollectionView(frame: frame, collectionViewLayout: layoutCV)

    /// collectionView
    
    func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
        return 1
    }
    
    func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.stickersArray.count
    }
    
    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
        
        let stickerCell = self.collectionView.dequeueReusableCellWithReuseIdentifier("AAStickersViewCell", forIndexPath: indexPath) as! AAStickersViewCell
        
        stickerCell.stickerImage.backgroundColor = UIColor.clearColor()
        stickerCell.bind(self.stickersArray[indexPath.row], clearPrev: true)
        
        return stickerCell;
        

    
    func bind(sticker: ACSticker!, clearPrev: Bool) {
        
        var fileLocation: ACFileReference?
        fileLocation = sticker.getFileReference128()
        
        print("file name === \(fileLocation!.fileName)")
        
        let cached = checkCache(512, id: Int64(fileLocation!.getFileId()))
        if (cached != nil) {
            self.stickerImage.image = cached
            return
        }
    
        self.callback = AAFileCallback(onDownloaded: { (reference) -> () in
            
            let data = NSFileManager.defaultManager().contentsAtPath(CocoaFiles.pathFromDescriptor(reference))
            
            if (data == nil) {
                return
            }
            
            var image:UIImage!
            image = UIImage.sd_imageWithWebPData(data)
            
            if (image == nil) {
                return
