ExpandableLayout stucks about expandablelayout HOT 4 CLOSED

RecyclerView recyclerView;
private List<NewsListItem> newsListItems;
private Context context;

static ViewHolder selectedHolder = null;

public NewsListAdapter(List<NewsListItem> listItems, Context context) {
    this.newsListItems = listItems;
    this.context = context;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.news_list_item, parent, false);
    return new ViewHolder(v);
}

@Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
    final NewsListItem newsListItem = newsListItems.get(position);

    holder.textViewHead.setText(newsListItem.getHead());
    Picasso.with(context).load(newsListItem.getImageUrl()).into(holder.imageView);
    holder.textViewText.setText(newsListItem.getText());

    holder.textViewHead.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (selectedHolder == null){
                holder.textViewHead.setSelected(true);
                holder.expandableLayout.expand();
                selectedHolder = holder;
            }
            else if (holder == selectedHolder){
                holder.textViewHead.setSelected(false);
                holder.expandableLayout.collapse();
                selectedHolder = null;
            }
            else{
                selectedHolder.textViewHead.setSelected(false);
                selectedHolder.expandableLayout.collapse();
                holder.textViewHead.setSelected(true);
                holder.expandableLayout.expand();
                selectedHolder = holder;
            }
        }
    });
    holder.expandableLayout.setInterpolator(new OvershootInterpolator());
    holder.expandableLayout.setOnExpansionUpdateListener(new ExpandableLayout.OnExpansionUpdateListener() {
        @Override
        public void onExpansionUpdate(float expansionFraction, int state) {
            Log.d("ExpandableLayout", "State: " + state);
        }
    });
    runEnterAnimation(holder.itemView, position);
}

@Override
public int getItemCount() {
    return newsListItems.size();
}

public class ViewHolder extends RecyclerView.ViewHolder{

    public ExpandableLayout expandableLayout;
    public TextView textViewHead;
    public ImageView imageView;
    public TextView textViewText;

    public ViewHolder(View itemView) {
        super(itemView);

        expandableLayout = (ExpandableLayout) itemView.findViewById(R.id.news_list_item_ExpendableLayout);
        textViewHead = (TextView) itemView.findViewById(R.id.news_textView_head);
        imageView = (ImageView) itemView.findViewById(R.id.news_imageView);
        textViewText = (TextView) itemView.findViewById(R.id.news_textView_text);
    }
}
private void runEnterAnimation(View view, int position){
    view.setTranslationX(context.getResources().getDisplayMetrics().widthPixels);
    view.animate().translationX(0).setInterpolator(new DecelerateInterpolator(3.f)).
            setDuration(700).setStartDelay((MainActivity.recyclerAnimDelay)+position*700/5).start();
    if (position == (newsListItems.size()-1)){
        MainActivity.recyclerAnimDelay = 0;
    }
}