ExpandableList 是折叠列表，通过继承ExpandableListActivity 类就可以非常简单的实现折叠列表。

效果图：

代码实现

package com.zhou.activity;

import android.app.ExpandableListActivity;

import android.os.Bundle;

import android.view.ContextMenu;

import android.view.Gravity;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.view.ContextMenu.ContextMenuInfo;

import android.widget.AbsListView;

import android.widget.BaseExpandableListAdapter;

import android.widget.ExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.TextView;

import android.widget.Toast;

import android.widget.ExpandableListView.ExpandableListContextMenuInfo;

public class ExpandableList extends ExpandableListActivity {

//声明adapter

private ExpandableListAdapter mAdapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(