列表和单个抽屉扩展列表 [英] list and expandable list in single drawer

问题描述

我是初学者到Android我需要一些帮助有关在一个抽屉列表和扩展列表
我知道这个问题是张贴在这里的几个时间，但我无法理解，其实我想做出这样的列表：

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:

请帮我一步一步
thak你！...

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

推荐答案

这是 ExpandableListView 本机行为，因此，如果任何项目没有孩子，含蓄不会扩展，但你需要设置 OnClickListener 两组（项目）和儿童（选项）：

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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