列表和可扩展列表在单个抽屉 [英] list and expandable list in single drawer

问题描述

我是初学者android我需要一些帮助关于列表和扩展列表在一个抽屉
我知道这个问题是发布在这里几个时间，但我无法理解，其实我想列出一个如下：

I am beginner to android I need some Help about List and Extended List in one Drawer I know that this question is posted here several Time but I am unable to understand that Actually I want to make a list like:

请帮助我一步一步
把你

Please Help me Step by Step thak you!...

推荐答案

这是 ExpandableListView 的本机行为，所以如果有项目没有孩子，隐含地不会被扩展，但是您需要为两个组（项目）和子项（选项）设置 OnClickListener ：

It's native behavior of ExpandableListView so if any Item doesn't have children, implicitly won't be expanded but you need to set OnClickListener for both groups (Items) and children (Options):

    public boolean onChildClick(ExpandableListView parent, View row, 
                               int groupPosition, int childPosition, long id) {

       // callback method after click for Options
       return false;
    }


    public boolean onGroupClick(ExpandableListView parent, View row, 
                                 int groupPosition, long id) {

       /** if you are using BaseAdapter subclass implementation **/

       adapter.getGroup(groupPosition)).getChildren() == null) {
          // item doesn't have children
           return true;
       }
       else {
          // has children
           return false;
       }

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