ExpandableListView 保证只展开一组

expandableListView.setOnGroupExpandListener(new OnGroupExpandListener(){
            @Override
            public void onGroupExpand(int groupPosition) {
                //保证每次只展开一组
                int count=expandableListView.getExpandableListAdapter().getGroupCount();
                for(int i=0;i<count; i++){
                    if(groupPosition != i){
                        expandableListView.collapseGroup(i);
                    }
                }
            }
        });