Android ListView内容变化后的动态刷新

//用于显示用户列表的ListView
private ListView userList = null;
//用户列表userList对应的适配器
SimpleAdapter simpleAdapter = null;
//用户列表userList对应的适配器的数据源
List<Map<String,?>> dataSimpleAdapter = new ArrayList<Map<String,?>>();
//用户列表ListView行布局元素
int[] userListViewTo = null;
//用户列表ListView行布局元素对应的适配器key值
String[] userListViewFrom = null; /**
* 初始化用户列表组件适配器.
*/
public void initUserListViewAdapter(){
userList = (ListView)findViewById(R.id.user_list_users);
userListViewTo = new int[]{R.id.user_list_item_user_id,
R.id.user_list_item_user_Login_id,
R.id.user_list_item_user_login_pass}; int len = userListViewTo.length;
userListViewFrom = new String[len];
for(int i=;i<len;i++){
userListViewFrom[i]=String.valueOf(i);
}
}

/**
* 显示ListView组件.
*/
public void showListView(){
//用户列表ListView布局文件
int resource = R.layout.user_list_item;
//准备适配器数据源
createAdapterData();
//绑定适配器并返回
simpleAdapter = new SimpleAdapter(context, dataSimpleAdapter, resource, userListViewFrom, userListViewTo);
//设置ListView组件的适配器.
userList.setAdapter(simpleAdapter);
} /**
* 生成适配器数据源
* @param itemCount
*/
public void createAdapterData(){
//准备适配器内容
dataSimpleAdapter.clear();//确保数据源是空的
int itemLength = ; for(int i=;i<itemLength;i++){
Map<String,Object> map = new HashMap<String,Object>();
map.put(userListViewFrom[], "数据列1-"+i);
map.put(userListViewFrom[], "数据列2-"+i);
map.put(userListViewFrom[], "数据列3-"+i);
dataSimpleAdapter.add(map);
}
}

//刷新listview
simpleAdapter.notifyDataSetChanged();