ViewHolder for list and grid view android

viewholder.java

protected static class ViewHolderProductList {
        // I added a generic return type to reduce the casting noise in client
        // code
        @SuppressWarnings("unchecked")
        public static <T extends View> T get(View view, int id) {
            SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
            if (viewHolder == null) {
                viewHolder = new SparseArray<View>();
                view.setTag(viewHolder);
            }
            View childView = viewHolder.get(id);
            if (childView == null) {
                childView = view.findViewById(id);
                viewHolder.put(id, childView);
            }
            return (T) childView;
        }
    }
    
    
    /* use in getView() */
    
     @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        if (convertView == null) {
            convertView = LayoutInflater.from(activity).inflate(
                    R.layout.row_home_supersonic_item_listing, parent, false);
        }

        ImageView advertisingAppImg = ViewHolderProductList.get(convertView,
                R.id.row_home_ivAppThumbnail);
        TextView advertisingAppName = ViewHolderProductList.get(convertView,
                R.id.row_home_tvAddAppTitle);
        TextView tvCredits = ViewHolderProductList.get(convertView,
                R.id.row_home_tvCredits);
        return convertView;
  }