Android 如何从多级ExpandableListview获取组和子位置

嗨，我有在多级可扩展列表视图显示项目的要求，为此我在谷歌搜索，并发现下面的代码，它的工作良好

但是我怎样才能找到每个级别组和子级职位呢？有人能帮我吗

活动：- xml:-

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为可扩展列表设置这些回调。这是我的工作示例，其中我在导航抽屉上实现了可扩展列表视图。。您也可以参考相同的示例来填充it活动

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我有3个级别，但你说的2个级别请勾掉我提到的链接，作为我的堆栈溢出答案之一。。查看是否满足您对可扩展列表视图的要求。。同样的链接也有完整的工作代码我有多级可扩展列表视图不是单级你的意思是第一级的孩子也会有孩子吗？我发布图片也希望第二级和子级的组和子级的位置请看一次

public class SampleActivity extends ActivityBase {

    ExpandableListView explvlist;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setUpBaseLayout(R.layout.activity_expandable);
        explvlist = (ExpandableListView) findViewById(R.id.ParentLevel);
        explvlist.setAdapter(new ParentLevel());
    }

    public class ParentLevel extends BaseExpandableListAdapter {

        @Override
        public Object getChild(int arg0, int arg1) {
            return arg1;
        }

        @Override
        public long getChildId(int groupPosition, int childPosition) {
            return childPosition;
        }

        @Override
        public View getChildView(int groupPosition, int childPosition,
                                 boolean isLastChild, View convertView, ViewGroup parent) {
            CustExpListview SecondLevelexplv = new CustExpListview(SampleActivity.this);
            SecondLevelexplv.setAdapter(new SecondLevelAdapter());
            SecondLevelexplv.setGroupIndicator(null);

            return SecondLevelexplv;
        }

        @Override
        public int getChildrenCount(int groupPosition) {
            return 3;
        }

        @Override
        public Object getGroup(int groupPosition) {
            return groupPosition;
        }

        @Override
        public int getGroupCount() {
            return 5;
        }

        @Override
        public long getGroupId(int groupPosition) {
            return groupPosition;
        }

        @Override
        public View getGroupView(final int groupPosition, boolean isExpanded,
                                 View convertView, ViewGroup parent) {
            TextView tv = new TextView(SampleActivity.this);
            tv.setText("->FirstLevel");
            tv.setTextColor(Color.BLACK);
            tv.setTextSize(20);
            tv.setBackgroundColor(Color.BLUE);
            tv.setPadding(10, 7, 7, 7);

            return tv;
        }

        @Override
        public boolean hasStableIds() {
            return true;
        }

        @Override
        public boolean isChildSelectable(int groupPosition, int childPosition) {
            return true;
        }
    }

    public class CustExpListview extends ExpandableListView {

        int intGroupPosition, intChildPosition, intGroupid;

        public CustExpListview(Context context) {
            super(context);
        }

        protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
            widthMeasureSpec = MeasureSpec.makeMeasureSpec(960,
                    MeasureSpec.AT_MOST);
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(600,
                    MeasureSpec.AT_MOST);
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        }
    }


    public class SecondLevelAdapter extends BaseExpandableListAdapter {

        @Override
        public Object getChild(int groupPosition, int childPosition) {
            return childPosition;
        }

        @Override
        public long getChildId(int groupPosition, int childPosition) {
            return childPosition;
        }

        @Override
        public View getChildView(final int groupPosition, final int childPosition,
                                 boolean isLastChild, View convertView, ViewGroup parent) {
            TextView tv = new TextView(SampleActivity.this);
            tv.setText("child");
            tv.setTextColor(Color.BLACK);
            tv.setTextSize(20);
            tv.setPadding(15, 5, 5, 5);
            tv.setBackgroundColor(Color.YELLOW);
            tv.setLayoutParams(new ListView.LayoutParams(
                    ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));

            return tv;
        }

        @Override
        public int getChildrenCount(int groupPosition) {
            return 5;
        }

        @Override
        public Object getGroup(int groupPosition) {
            return groupPosition;
        }

        @Override
        public int getGroupCount() {
            return 1;
        }

        @Override
        public long getGroupId(int groupPosition) {
            return groupPosition;
        }

        @Override
        public View getGroupView(final int groupPosition, boolean isExpanded,
                                 View convertView, ViewGroup parent) {
            TextView tv = new TextView(SampleActivity.this);
            tv.setText("-->Second Level");
            tv.setTextColor(Color.BLACK);
            tv.setTextSize(20);
            tv.setPadding(12, 7, 7, 7);
            tv.setBackgroundColor(Color.RED);

            return tv;
        }

        @Override
        public boolean hasStableIds() {
            // TODO Auto-generated method stub
            return true;
        }

        @Override
        public boolean isChildSelectable(int groupPosition, int childPosition) {
            // TODO Auto-generated method stub
            return true;
        }
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    <ExpandableListView
        android:id="@+id/ParentLevel"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:groupIndicator="@null"/>
</LinearLayout>

   expListView.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {

            @Override
            public boolean onGroupClick(ExpandableListView parent, View v,
                                        int groupPosition, long id) {
                // Toast.makeText(getApplicationContext(),
                // "Group Clicked " + listDataHeader.get(groupPosition),
                // Toast.LENGTH_SHORT).show();
                return false;
            }
        });
        // Listview Group expanded listener
        expListView.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {

            @Override
            public void onGroupExpand(int groupPosition) {
                Toast.makeText(getApplicationContext(),
                        listDataHeader.get(groupPosition) + " Expanded",
                        Toast.LENGTH_SHORT).show();
            }
        });

        // Listview Group collasped listener
        expListView.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {

            @Override
            public void onGroupCollapse(int groupPosition) {
                Toast.makeText(getApplicationContext(),
                        listDataHeader.get(groupPosition) + " Collapsed",
                        Toast.LENGTH_SHORT).show();

            }
        });

        // Listview on child click listener
        expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {

            @Override
            public boolean onChildClick(ExpandableListView parent, View v,
                                        int groupPosition, int childPosition, long id) {
                // TODO Auto-generated method stub
                // Temporary code:

                // till here
                Toast.makeText(
                        getApplicationContext(),
                        listDataHeader.get(groupPosition)
                                + " : "
                                + listDataChild.get(
                                listDataHeader.get(groupPosition)).get(
                                childPosition), Toast.LENGTH_SHORT)
                        .show();
                return false;
            }
        });}