Android ListView自定义Adapter使用误区

参考博客：BaseAdapter中重写getview的心得以及发现convertView回收的机制

使用自定义的BaseAdapter实现LIstView的展示

由于Recycler（反复循环器）的机制，所以getView代码转变如下

   public View getView(int position, View view, ViewGroup viewGroup) {
        final SpinnerItem item = (SpinnerItem)getItem(position);
        ViewHolder viewHolder=null;
//        Log.e("SEARCH_RESULT", String.valueOf(position));
//        Log.e("SEARCH_RESULT", item.getItemID());
        if (view == null) {
            view = View.inflate(mContext, layout, null);
            viewHolder = new ViewHolder();
            viewHolder.mTxtName = (TextView) view.findViewById(R.id.search_expand_item);
            viewHolder.mTxtID =(TextView)view.findViewById(R.id.search_expand_item_id);
            viewHolder.mTxtDisplay =(TextView)view.findViewById(android.R.id.text1);
            view.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder)view.getTag();
        }
        if(viewHolder != null) {
            if (viewHolder.mTxtName != null) {
                viewHolder.mTxtName.setText(item.getItemName());
            }
            if(viewHolder.mTxtID != null) {
                viewHolder.mTxtID.setText(item.getItemID());
            }
            if(viewHolder.mTxtDisplay !=null) {
                viewHolder.mTxtDisplay.setText(item.getItemName());
            }
        }
//        if(mTxtName != null) {
//            mTxtName.setText(item.getItemName());
//        }
//        if(mTxtID != null) {
//            mTxtID.setText(item.getItemID());
//        }
//
//        if(mTxtDisplay != null){
//            mTxtDisplay.setText(item.getItemName());
//        }
        return view;
    }

使用了ViewHolder，如下

    public class ViewHolder{
        TextView mTxtName;
        TextView mTxtID;
        TextView mTxtDisplay;
    }