展开 onlineUsersListView.expandGroup(0);
关闭 onlineUsersListView.collapseGroup(i);
onlineUsersListView.setOnGroupExpandListener(new OnGroupExpandListener() {
@Override
public void onGroupExpand(int groupPosition) {
for (int i = 0, count = onlineUsersListView
.getExpandableListAdapter().getGroupCount(); i < count; i++) {
if (groupPosition != i) {// 关闭其他分组
onlineUsersListView.collapseGroup(i);
}
}
}
});