可展开列表ExpandableListView—SimpleExpandableListAdpater

1.aty

package com.louis.louisexpandablelistviewdemo;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.widget.ExpandableListView;import android.widget.SimpleExpandableListAdapter;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class MainActivity extends AppCompatActivity {    //定义父列表项List数据集合    List<Map<String, Object>> parentMapList = new ArrayList<Map<String, Object>>();    //定义子列表项List数据集合    List<List<Map<String, Object>>> childMapList_list = new ArrayList<List<Map<String, Object>>>();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initData();        ExpandableListView expandableListView= (ExpandableListView) findViewById(R.id.id_elv);        /**         * 第一个参数  应用程序接口 this         * 第二个父列List<?extends Map<String,Object>>集合 为父列提供数据         * 第三个参数  父列显示的组件资源文件         * 第四个参数  键值列表 父列Map字典的key         * 第五个要显示的父列组件id         * 第六个 子列的显示资源文件         * 第七个参数 键值列表的子列Map字典的key         * 第八个要显示子列的组件id         *         * 第五个参数groupTo - The group views that should display column in the "groupFrom" parameter. These should all be TextViews. The first N views in this list are given the values of the first N columns in the groupFrom parameter.         */        SimpleExpandableListAdapter simpleExpandableListAdapter = new SimpleExpandableListAdapter(                this, parentMapList, R.layout.parent_layout, new String[] { "parentName"},                new int[] { R.id.tv_title_parent}, childMapList_list, R.layout.child_layout,                new String[] { "childName"}, new int[] { R.id.tv_items_child});        expandableListView.setAdapter(simpleExpandableListAdapter);    }    private void initData() {        for (int i = 0; i < 15; i++) {            //提供父列表的数据            Map<String, Object> parentMap = new HashMap<String, Object>();            parentMap.put("parentName", "parentName"+i);            parentMapList.add(parentMap);            //提供当前父列的子列数据            List<Map<String, Object>> childMapList = new ArrayList<Map<String, Object>>();            for (int j = 0; j < 10; j++) {                Map<String, Object> childMap = new HashMap<String, Object>();                childMap.put("childName", "parentName"+i+"下面的childName"+j);                childMapList.add(childMap);            }            childMapList_list.add(childMapList);        }    }}

2.xml 4 aty

<?xml version="1.0" encoding="utf-8"?><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"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.louis.louisexpandablelistviewdemo.MainActivity">    <ExpandableListView        android:id="@+id/id_elv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:background="@mipmap/channel_expandablelistview_bg"        android:cacheColorHint="#00000000"        android:divider="#ebebeb"        android:dividerHeight="2dp"        android:footerDividersEnabled="false"        >    </ExpandableListView></RelativeLayout>

3.xml 4 parent group

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:orientation="horizontal" >    <TextView        android:id="@+id/tv_title_parent"        android:padding="10dp"        android:layout_marginLeft="25dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content" /></LinearLayout>

4.xml 4 child

<?xml version="1.0" encoding="utf-8"?>    <TextView xmlns:android="http://schemas.android.com/apk/res/android"        android:id="@+id/tv_items_child"         android:padding="10dp"        android:layout_width="wrap_content"        android:layout_height="wrap_content" >    </TextView>

结果：

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小修改

ExpandableListView加入

android:groupIndicator="@null"

去掉默认的箭头图标

在child xml中加入

<View        android:id="@+id/channel_line"        android:layout_width="5dp"        android:layout_height="20dp"        android:layout_marginLeft="15dp"        android:layout_gravity="center_vertical"        android:background="#79BEF7" />

结果

demo下载：http://download.csdn.net/detail/richiezhu/9462887

自定义不同icon 见：http://blog.csdn.net/richiezhu/article/details/50906152