ListView----BaseAdapter模板

class MyAdapter extends Basedapter{
  @Override
   public int getCount() {
       return string.size();
   }
   @Override
   public Object getItem(int position) {
       return stringList.get(position);
   }
   @Override
   public long getItemId(int position) {
       return position;
   }
   
   @Override
   public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder viewHolder=null;
   
if(convertView==null){
//当前listView指向条目的xml-->view
convertView=View.inflate(UIUtils.getContext,R.layout.item,null);
//创建覆用的viewHolder
viewHolder=new ViewHolder();
//获取控件
viewHolder.tv=(TextView)convertView.findViewById(R.id.tv);
//设置tag给convertView
convertView.setTag(viewHolder);
}else{
viewHolder=convertView.getTag();
}
//给控件设置数据
viewHolder.tv.setText(stringList.get(position));
return convertView;
   }
}


class ViewHolder{
//布局中包含的控件
TextView tv;
}