ExpandableListView实现简单二级列表

<RelativeLayout  ns:android=\"http://schemas.android.com/apk/res/android\"
  ns:tools=\"http://schemas.android.com/tools\"
 android:layout_width=\"match_parent\"
 android:layout_height=\"match_parent\"
 tools:context=\"${relativePackage}.${activityClass}\" >
 <ExpandableListView 
 android:layout_width=\"match_parent\"
 android:layout_height=\"match_parent\"
 android:id=\"@+id/expandableListView\"> 
 </ExpandableListView>
 
</RelativeLayout>

<?  version=\"1.0\" encoding=\"utf-8\"?>
<RelativeLayout  ns:android=\"http://schemas.android.com/apk/res/android\"
 android:layout_width=\"match_parent\"
 android:layout_height=\"80dp\"
 android:orientation=\"vertical\" > 
 <TextView 
 android:id=\"@+id/one_name\"
 android:layout_width=\"wrap_content\"
 android:layout_height=\"40dp\"
 android:layout_centerInParent=\"true\"
 android:textSize=\"20sp\"
 android:text=\"我是一级列表\"/>
 
</RelativeLayout>

<?  version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout  ns:android=\"http://schemas.android.com/apk/res/android\"
 android:layout_width=\"match_parent\"
 android:layout_height=\"60dp\"
 android:orientation=\"horizontal\" >
 
 <ImageView 
 android:id=\"@+id/img\"
 android:layout_width=\"60dp\"
 android:layout_height=\"60dp\"
 android:src=\"@drawable/ic_launcher\"/>
 <TextView 
 android:layout_width=\"wrap_content\"
 android:layout_height=\"wrap_content\"
 android:id=\"@+id/tow_name\"
 android:layout_marginTop=\"20dp\"
 android:layout_marginLeft=\"20dp\"
 android:text=\"嘻嘻哈哈\"/>
</LinearLayout>

package com.example.expandablelistview;
 
import java.util.ArrayList;
import java.util.List;
 
import android.R.string;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget. ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.TextView;
 
public class MainActivity extends Activity {
 private MainActivity.Madapder madapder;
 private ExpandableListView expandableListView;
 private List<String> allList;
 private List<List<Person>> list;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);
 //获取控件
 expandableListView=(ExpandableListView) findViewById(R.id.expandableListView);
 //初始化数据
 initData();
 //自定义适配器
 madapder=new Madapder();
 expandableListView.setAdapter(madapder);
 }
 public void initData() {
 allList=new ArrayList<String>();
 allList.add(\"列表①\");
 allList.add(\"列表②\");
 allList.add(\"列表③\");
 list=new ArrayList<List<Person>>();
 List<Person> list1=new ArrayList<Person>();
 list1.add(new Person(\" 虞姬\"));
 list1.add(new Person(\" 甄姬\"));
 list1.add(new Person(\" 阿狸\"));
 list1.add(new Person(\" 狐狸\"));
 List<Person> list2=new ArrayList<Person>();
 list2.add(new Person(\" 李白\"));
 list2.add(new Person(\" ?羽\"));
 list2.add(new Person(\" ??\"));
 list2.add(new Person(\" 曹操\"));
 List<Person> list3=new ArrayList<Person>();
 list3.add(new Person(\" 公孙离\"));
 list3.add(new Person(\" 孙尚香\"));
 list3.add(new Person(\" 狄仁杰\"));
 list3.add(new Person(\" 蔡文姬\"));
 list.add(list1);
 list.add(list2);
 list.add(list3);
 }
 class Madapder extends  ExpandableListAdapter{
 
 @Override
 public int getGroupCount() {
 // TODO Auto-generated method stub
 return allList.size();
 }
 
 @Override
 public int getChildrenCount(int groupPosition) {
 // TODO Auto-generated method stub
 return list.get(groupPosition).size();
 }
 
 @Override
 public   getGroup(int groupPosition) {
 // TODO Auto-generated method stub
 return allList.get(groupPosition);
 }
 
 @Override
 public   getChild(int groupPosition, int childPosition) {
 // TODO Auto-generated method stub
 return list.get(groupPosition).get(childPosition);
 }
 
 @Override
 public long getGroupId(int groupPosition) {
 // TODO Auto-generated method stub
 return groupPosition;
 }
 
 @Override
 public long getChildId(int groupPosition, int childPosition) {
 // TODO Auto-generated method stub
 return childPosition;
 }
 
 @Override
 public boolean hasStableIds() {
 // TODO Auto-generated method stub
 return true;
 }
 
 @Override
 public View getGroupView(int groupPosition, boolean isExpanded,
 View convertView, ViewGroup parent) {
 GroupView groupView;
 if(convertView==null){
 groupView=new GroupView();
 //获取一级列表的布局
 convertView=View.inflate(MainActivity.this,R.layout.item_1, null);
 //复用控件
 groupView.name=(TextView) convertView.findViewById(R.id.one_name);
 //绑定
 convertView.setTag(groupView);
 }else {
 groupView = (GroupView) convertView.getTag();
 }
 //给控件设置值
 groupView.name.setText(allList.get(groupPosition));
 return convertView;
 }
 @Override
 public View getChildView(int groupPosition, int childPosition,
 boolean isLastChild, View convertView, ViewGroup parent) {
 ViewHolder Holder;
 if(convertView==null){
 Holder=new ViewHolder();
 //获取二级列表的布局
 convertView=View.inflate(MainActivity.this,R.layout.item_2, null);
 //复用控件
 Holder.text_name=(TextView) convertView.findViewById(R.id.tow_name);
 //绑定
 convertView.setTag(Holder);
 }else {
 Holder = (ViewHolder) convertView.getTag();
 }
 //给控件设置值
 Holder.text_name.setText(list.get(groupPosition).get(childPosition).getName());
 return convertView;
 }
 
 @Override
 public boolean isChildSelectable(int groupPosition, int childPosition) {
 // TODO Auto-generated method stub
 return true;
 } 
 }
 class ViewHolder{
 TextView text_name;
 }
 class GroupView{
 TextView name;
 }
}

package com.example.expandablelistview;
 
public class Person {
 String name;
 public Person() {
 // TODO Auto-generated constructor stub
 }
 public Person(String name) {
 super();
 this.name = name;
 }
 public String getName() {
 return name;
 }
 public void setName(String name) {
 this.name = name;
 }
 @Override
 public String toString() {
 return \"Person [name=\" + name + \"]\";
 }
 
}