ExpandableListView实现简单二级列表

本文实例为大家分享了expandablelistview实现简单二级列表的具体代码，供大家参考，具体内容如下

xml创建一个 expandablelistview

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns: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>

expandablelistview的一级列表布局

<?xml version="1.0" encoding="utf-8"?>
<relativelayout xmlns: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>

expandablelistview的二级列表布局

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns: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>

java代码

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.baseexpandablelistadapter;
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(" 項羽"));
 list2.add(new person(" 荊軻"));
 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 baseexpandablelistadapter{
 
 @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 object getgroup(int groupposition) {
 // todo auto-generated method stub
 return alllist.get(groupposition);
 }
 
 @override
 public object 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;
 }
}

java_封装类

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 + "]";
 }
 
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。