1  2  3  4  5  

<?xml version="1.0" encoding="utf-8"?>  <linearlayout android:layout_height="fill_parent" android:layout_width="fill_parent" android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android">   <expandablelistview android:layout_height="wrap_content" android:layout_width="match_parent" android:id="@id/android:list">   </expandablelistview>  </linearlayout>

package basic.android.lesson43;    

 import java.util.ArrayList;  

import java.util.HashMap; 

 import java.util.List; 

 import java.util.Map;   

  import android.app.ExpandableListActivity;  

import android.os.Bundle;  

import android.view.View;

  import android.widget.ExpandableListView;

  import android.widget.SimpleExpandableListAdapter; 

 import android.widget.Toast;    

 public class MainActivity extends ExpandableListActivity {  

    @Override   public void onCreate(Bundle savedInstanceState) { 

   super.onCreate(savedInstanceState);   

 setContentView(R.layout.main);      

 // 准备顶层列表数据    

List  <map string=""><string ,="">> topList = new ArrayList</string></map> 

 <map string=""><string ,="">>();   

    Map</string><string string="" ,=""> topMap1 = new HashMap</string><string string="" ,="">();

    Map</string><string string="" ,=""> topMap2 = new HashMap</string><string string="" ,="">();

    topMap1.put("month", "三月测评项");

    topMap2.put("month", "四月测评项"); 

   topList.add(topMap1); 

   topList.add(topMap2); 

      // 准备二层列表数据   

 List  <list string="">

  </list></string></map><map><string ,="">>>

 nestList = new ArrayList</string></map

>     <list string="">  <map><string ,="">>>();      

 // 准备二层列表第一个子列表数据  

  List  </string></map><map string="">

<string ,="">> 

nestList1 = new ArrayList</string></map> 

 <map string=""><string ,="">>();    

Map</string><string string="" ,=""> 

nestMap1 = new HashMap</string><string string="" ,="">(); 

   Map</string><string string="" ,=""> nestMap2 = new HashMap</string><string string="" ,="">(); 

   Map</string><string string="" ,=""> nestMap3 = new HashMap</string><string string="" ,="">();    nestMap1.put("

test", "看手");    nestMap2.put("test", "吃手");    nestMap3.put("test", "玩手");  

  nestList1.add(nestMap1);    nestList1.add(nestMap2);    nestList1.add(nestMap3);   

    // 准备二层列表第二个子列表数据    

List  </string></map><map string=""><string ,="">> nestList2 = new ArrayList</string></map>  <map string=""><string ,="">>();

    Map</string><string string="" ,=""> nestMap4 = new HashMap</string><string string="" ,="">(); 

   Map</string><string string="" ,=""> nestMap5 = new HashMap</string><string string="" ,="">();

    nestMap4.put("test", "翻身");  

  nestMap5.put("test", "辨别声音来源方位");

    nestList2.add(nestMap4);

    nestList2.add(nestMap5);   

    // 把子列表数据放入  

  nestList.add(nestList1);  

  nestList.add(nestList2); 

      // 准备数据匹配器 

   SimpleExpandableListAdapter adapter = new SimpleExpandableListAdapter( 

     this, //1.上下文  

    topList, //2.顶层数据列表    

  android.R.layout.simple_expandable_list_item_1, // 3.一层显示样式      

new String[]{"month"},

 //4.顶层map的键      new int[]{android.R.id.text1}

, // 5.顶层数据显示的View ID      nestList, //6.二层数据列表      android.R.layout.simple_list_item_1, //7.二层显示样式      new String[]{"test"}, //8.二层map的键      new int[]{android.R.id.text1} //9.二层数据显示的View ID      );       //设置数据匹配器    this.setListAdapter(adapter);      }      @Override   public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {    Toast.makeText(this, "嵌套列表被点击，顶层列表定位"+groupPosition+"二层列表定位"+childPosition, Toast.LENGTH_LONG).show();    return super.onChildClick(parent, v, groupPosition, childPosition, id);   }      @Override   public void onGroupCollapse(int groupPosition) {    Toast.makeText(this, "顶层列表收缩，列表定位"+groupPosition, Toast.LENGTH_LONG).show();    super.onGroupCollapse(groupPosition);   }      @Override   public void onGroupExpand(int groupPosition) {    Toast.makeText(this, "顶层列表展开，列表定位"+groupPosition, Toast.LENGTH_LONG).show();    super.onGroupExpand(groupPosition);   }     }  </string></map>     </list>