android 关于ExpandableListView单击一个group其他的group关闭，此group标题应该顶头

 定义flag记录列表状态

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1. int expandFlag = -1;//控制列表的展开  

 

 重写onGroupClick方法

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1. ExpandableListView listView = getExpandableListView();  
2.   
3. listView.setOnGroupClickListener(new OnGroupClickListener() {  
4.   
5.  @Override  
6.  public boolean onGroupClick(ExpandableListView listView, View v,  
7.    int groupPosition, long id) {  
8.     
9.   if (expandFlag == -1) {  
10.    //展开被选的group  
11.    listView.expandGroup(groupPosition);  
12.          //设置被选中的group置于顶端  
13.          listView.setSelectedGroup(groupPosition);  
14.          expandFlag = groupPosition;  
15.   } else if (expandFlag == groupPosition) {  
16.    listView.collapseGroup(expandFlag);  
17.    expandFlag = -1;  
18.   } else {  
19.    listView.collapseGroup(expandFlag);  
20.    //展开被选的group  
21.    listView.expandGroup(groupPosition);  
22.          //设置被选中的group置于顶端  
23.          listView.setSelectedGroup(groupPosition);  
24.          expandFlag = groupPosition;  
25.   }  
26.           
27.         return true;  
28.  }  
29. });