ExpandableListActivity列表嵌套列表

SimpleExpandableListActivity为ExpandableListActivity传递数据

ExpandableListActivity为ListActivity传递数据

先看布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"    
  android:orientation="horizontal">
        
  <ExpandableListView    
  android:id="@id/android:list"    
  android:layout_width="fill_parent"    
  android:layout_height="fill_parent"    
  android:drawSelectorOnTop="false"/>
    
  <TextView    
  android:text="No Data"    
  android:id="@id/android:empty"    
  android:layout_height="fill_parent"    
  android:layout_width="fill_parent"/>
    
  </LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent" android:layout_height="fill_parent"
  android:orientation="vertical">
  <TextView    
  android:text="No Data" android:id="@+id/textView_group" android:layout_height="fill_parent" android:layout_width="fill_parent" android:paddingLeft="60dp" android:paddingTop="10dp" android:textSize="25dp">
    </TextView>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent" android:layout_height="fill_parent"
  android:orientation="vertical">
  <TextView android:text="No Data" android:layout_width="fill_parent"
    android:id="@+id/textView_child" android:layout_height="fill_parent" android:paddingLeft="40dp" android:paddingTop="15dp" android:textSize="20dp" android:paddingBottom="5dp"></TextView>
</LinearLayout>

以上是各个级别的布局文件

package com.ExpandableListActivityDemo;

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.widget.SimpleExpandableListAdapter;

public class MainActivity extends ExpandableListActivity {
  /** ExpandableListActivity列表嵌套列表---->MainActivity继承了ExpandableListActivity */
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    // 数据的准备构成
    // 列表分2大类
    //定义一个list,该list对象为一级条目提供数据，次代码为两个list条目
    List<Map<String, String>> groups = new ArrayList<Map<String, String>>();
    Map<String, String> group1 = new HashMap<String, String>();
    group1.put("group", "group1");
    groups.add(group1);
    
    Map<String, String> group2 = new HashMap<String, String>();
    group2.put("group", "group2");
    groups.add(group2);
    // 每类有2组数据
    //定义一个list,该list对象为第一个一级条目提供二级条目数据，次代码为两个list条目
    List<Map<String, String>> child1 = new ArrayList<Map<String, String>>();
    Map<String, String> child1_1 = new HashMap<String, String>();
    child1_1.put("child", "child1");
    child1.add(child1_1);
    
    Map<String, String> child1_2 = new HashMap<String, String>();
    child1_2.put("child", "child2");
    child1.add(child1_2);
    // 定义一个list，该list对象为第二个一级条目提供二级条目数据
    List<Map<String, String>> child2 = new ArrayList<Map<String, String>>();
    Map<String, String> child2_1 = new HashMap<String, String>();
    child2_1.put("child", "child1");
    Map<String, String> child2_2 = new HashMap<String, String>();
    child2_2.put("child", "child2");
    child2.add(child2_1);
    child2.add(child2_2);

    List<List<Map<String, String>>> childs = new ArrayList<List<Map<String, String>>>();
    childs.add(child1);
    childs.add(child2);
    // SimpleExpandableListAdapter向ExpandableListActivity推送数据
    //new String[] { "group" },new int[] { R.id.textView_group }这两个参数为一级条目的键值对
    SimpleExpandableListAdapter simpleExpandableListAdapter = new SimpleExpandableListAdapter(
        this, groups, R.layout.group, new String[] { "group" },
        new int[] { R.id.textView_group }, childs, R.layout.child,
        new String[] { "child" }, new int[] { R.id.textView_child });
    setListAdapter(simpleExpandableListAdapter);
  }
}