本文采用一个Demo来展示Android中ExpandableListView控件的使用，如如何在组/子ListView中绑定数据源。直接上代码如下：

程序结构图：

layout目录下的 main.xml 文件源码如下：

android:orientation="vertical"

android:layout_width="fill_parent"

android:layout_height="fill_parent">

android:id="@id/android:list"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_weight="1"

android:drawSelectorOnTop="false"/>

包com.andyidea.demo中ContactsActivity.java源码如下：

package com.andyidea.demo;

import java.util.ArrayList;

import java.util.List;

import android.app.ExpandableListActivity;

import android.os.Bundle;

import android.view.Gravity;

import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.widget.AbsListView;

import android.widget.BaseExpandableListAdapter;

import android.widget.TextView;

public class ContactsActivity extends ExpandableListActivity {

List group; //组列表

List> child; //子列表

ContactsInfoAdapter adapter; //数据适配器

/** Called when the activity is first created. */

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE); //设置为无标题

setContentView(R.layout.main);

getExpandableListView().setBackgroundResource(R.drawable.default_bg);

initializeData();

getExpandableListView().setAdapter(new ContactsInfoAdapter());

getExpandableListView().setCacheColorHint(0); //设置拖动列表的时候防止出现黑色背景

}

/**

* 初始化组、子列表数据

*/

private void initializeData(){

group = new ArrayList();

child = new ArrayList>();

addInfo("Andy",new String[]{"male","138123***","GuangZhou"});

addInfo("Fairy",new String[]{"female","138123***","GuangZhou"});

addInfo("Jerry",new String[]{"male","138123***","ShenZhen"});

addInfo("Tom",new String[]{"female","138123***","ShangHai"});

addInfo("Bill",new String[]{"male","138231***","ZhanJiang"});

}

/**

* 模拟给组、子列表添加数据

* @param g-group

* @param c-child

*/

private void addInfo(String g,String[] c){

group.add(g);

List childitem = new ArrayList();

for(int i=0;i

childitem.add(c[i]);

}

child.add(childitem);

}

class ContactsInfoAdapter extends BaseExpandableListAdapter{

//-----------------Child----------------//

@Override

public Object getChild(int groupPosition, int childPosition) {

return child.get(groupPosition).get(childPosition);

}

@Override

public long getChildId(int groupPosition, int childPosition) {

return childPosition;

}

@Override

public int getChildrenCount(int groupPosition) {

return child.get(groupPosition).size();

}

@Override

public View getChildView(int groupPosition, int childPosition,

boolean isLastChild, View convertView, ViewGroup parent) {

String string = child.get(groupPosition).get(childPosition);

return getGenericView(string);

}

//----------------Group----------------//

@Override

public Object getGroup(int groupPosition) {

return group.get(groupPosition);

}

@Override

public long getGroupId(int groupPosition) {

return groupPosition;

}

@Override

public int getGroupCount() {

return group.size();

}

@Override

public View getGroupView(int groupPosition, boolean isExpanded,

View convertView, ViewGroup parent) {

String string = group.get(groupPosition);

return getGenericView(string);

}

//创建组/子视图

public TextView getGenericView(String s) {

// Layout parameters for the ExpandableListView

AbsListView.LayoutParams lp = new AbsListView.LayoutParams(

ViewGroup.LayoutParams.FILL_PARENT, 40);

TextView text = new TextView(ContactsActivity.this);

text.setLayoutParams(lp);

// Center the text vertically

text.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);

// Set the text starting position

text.setPadding(36, 0, 0, 0);

text.setText(s);

return text;

}

@Override

public boolean hasStableIds() {

// TODO Auto-generated method stub

return false;

}

@Override

public boolean isChildSelectable(int groupPosition, int childPosition) {

// TODO Auto-generated method stub

return true;

}

}

}

最后，程序运行后截图如下：

希望本文所述对大家学习Android软件编程有所帮助。