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
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<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 + "]";
}
}
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