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1、在getview时，如果是一个textview，那么不用每次都new一个或者inflater直接返回，可以先判断convertview是否为空，如果为空则new或者inflate，否则直接返回convertview
2、如果adapter数量太多，假设需要显示1000个数据，那么如果在getview时每次都是对inflate，那么是一种对资源的浪费，且卡顿现象严重，此时可以通过结合viewHolder提高效率
举例：
1、adapter的getview方法
@Override public View getView( int pos, View convertView, ViewGroup parent) { // TODO Auto-generated method stub ViewHolderPushHistory holder; final int position = pos; if(convertView == null) { CommonUtils.LogWuwei(tag, "pushHistoryAdapter getView position is "+pos); LayoutInflater inflater = (LayoutInflater)ctxt.getSystemService(Context.LAYOUT_INFLATER_SERVICE); holder = new ViewHolderPushHistory(); convertView = inflater.inflate(R.layout.gridview_history_item, null); holder.tv_serinal_num = (TextView)convertView.findViewById(R.id.textview_grdiview_history_item_serinal_num); holder.tv_whether_packaged = (TextView)convertView.findViewById(R.id.textview_grdiview_history_item_whether_packaged); holder.buttonContent = (TextView)convertView.findViewById(R.id.button_gridview_history_item_order_content); holder.buttonTime = (TextView)convertView.findViewById(R.id.textview_grdiview_history_item_time); convertView.setTag(holder); } else { holder = (ViewHolderPushHistory)convertView.getTag(); } holder.tv_serinal_num.setText(serinal_num); holder.buttonContent.setText("鱼香肉丝"); holder.tv_whether_packaged.setText("打包"); holder.buttonTime.setText(“2：12”）; return convertView; }
2、定义一个存储信息的类
1 package com.shanfubaoAndroid.kitchenMealDone; 2 3 4 import android.widget.TextView; 5 6 public class ViewHolderPushHistory { 7 8 9 public TextView tv_serinal_num; 10 11 public TextView tv_whether_packaged ; 12 13 public TextView buttonContent ; 14 15 public TextView buttonTime ; 16 17 18 }
43、gridview或者listview的adapter优化
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原文地址：http://www.cnblogs.com/kunyashaw/p/4633890.html
