把holder抽取成一个接口会不会更方便？

@Override

public View getView(int position, View convertView, ViewGroup parent) {

if(convertView==null){

     convertView = mInflater.inflate(mLayoutId, parent,false);

         mHolder.getFieldViews(convertView);

         convertView.setTag(mHolder);

     }else{

          mHolder = (IViewHolder) convertView.getTag();

     }

     Bean bean = mBeans.get(position);

     mHolder.setFieldValues(bean);;

return convertView;

}

求指教？