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标题: Android 开发 listview QQ多级列表的实现 [打印本页]

作者: 我是MT 时间: 2014-10-2 10:02 标题: Android 开发 listview QQ多级列表的实现

关键词： android

[代码] 主类

package com.android.qu.antking.list;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.*;
public class MyMain extends Activity {
//author antkingwei
private List<Map<String,Object>> parentList=new ArrayList<Map<String,Object>>();
private List<List<Map<String,Object>>> childList = new ArrayList<List<Map<String,Object>>>();
ExpendAdapter adapter;
ExpandableListView exList;
private String[] listName = new String[]{
"我的好友","高中同学","大学同学","移动开发","网站建设","普通朋友"
};
private String[] childTitle= new String[]{
"丫宁","王八锐","小鸟","连超","董二丫"
};
private String[] childMood= new String[]{
"我喜欢王锐","我就是王八","我也喜欢王锐","上边一群傻帽","同楼上"
};
private int[] headImage=new int[]{
R.drawable.ning,R.drawable.rui,R.drawable.niao,R.drawable.lianchao,R.drawable.xiaoxiao
};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
exList = (ExpandableListView) this.findViewById(R.id.expandableListView1);
parentList =getParentList();
childList = getChildList();
adapter = new ExpendAdapter(MyMain.this, parentList, childList);
exList.setAdapter(adapter);
exList.setGroupIndicator(null);
exList.setDivider(null);
}
public List<Map<String,Object>> getParentList(){
List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();
for(int i=0;i<listName.length;i++){
Map<String, Object> curGroupMap = new HashMap<String, Object>();
list.add(curGroupMap);
curGroupMap.put("List", listName);
}
return list;
}
public List<List<Map<String,Object>>> getChildList(){
List<List<Map<String,Object>>> list1 = new ArrayList<List<Map<String,Object>>>();
for (int i = 0; i < listName.length; i++) {
List<Map<String, Object>> children = new ArrayList<Map<String, Object>>();
for (int j = 0; j <childTitle.length; j++) {
Map<String, Object> curChildMap = new HashMap<String, Object>();
children.add(curChildMap);
curChildMap.put("Title", childTitle[j]);
curChildMap.put("Mood", childMood[j]);
curChildMap.put("Head", headImage[j]);
}
list1.add(children);
}
return list1;
}
}

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[代码] 自定义的Adapter

package com.android.qu.antking.list;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.*;
public class ExpendAdapter extends BaseExpandableListAdapter {
   private LayoutInflater layoutInflater;
   private Context mContext;
   private List<Map<String,Object>> parentList = new ArrayList<Map<String,Object>>();
   private List<List<Map<String,Object>>> childList = new ArrayList<List<Map<String,Object>>>();
public ExpendAdapter(Context mContext,List<Map<String,Object>> parentList,List<List<Map<String,Object>>> childList){
this.mContext = mContext;
this.parentList = parentList;
this.childList = childList;
layoutInflater = LayoutInflater.from(mContext);
}
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return childList.get(groupPosition).get(childPosition).get("Title").toString();
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
if(convertView ==null){
convertView = layoutInflater.inflate(R.layout.childlist, null);
}
final ImageView head=(ImageView)convertView.findViewById(R.id.headImage);
  head.setImageResource(Integer.valueOf(childList.get(groupPosition).get(childPosition).get("Head").toString()));
final TextView title=(TextView)convertView.findViewById(R.id.title);
title.setText(childList.get(groupPosition).get(childPosition).get("Title").toString());
final TextView mood =(TextView)convertView.findViewById(R.id.mood);
   mood.setText(childList.get(groupPosition).get(childPosition).get("Mood").toString());
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return childList.get(groupPosition).size();
}
@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return parentList.get(groupPosition).get("List").toString();
}
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return parentList.size();
}
@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
if(convertView==null){
convertView=layoutInflater.inflate(R.layout.parentlist, null);
}
final TextView list = (TextView) convertView.findViewById(R.id.list);
list.setText(parentList.get(groupPosition).get("List").toString());
return convertView;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
Toast.makeText(mContext,"nihao",Toast.LENGTH_SHORT).show();
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
Toast.makeText(mContext, "这是第"+groupPosition+"组，第"+childPosition+"个", Toast.LENGTH_SHORT).show();
return true;
}
}

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[代码] 主布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
androidrientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/back1"
>
<ExpandableListView android:layout_height="wrap_content" android:id="@+id/expandableListView1" android:layout_width="fill_parent"></ExpandableListView>
</LinearLayout>

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[代码] parentList布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  androidrientation="horizontal"
  android:id="@+id/parentList"
  android:layout_height="wrap_content">
  <ImageView
android:layout_width="60px"
android:layout_height="60px"
android:src="@drawable/user_group"
/>
<TextView
android:id="@+id/list"
android:textSize="20px"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>

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[代码] childList布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:id="@+id/childList"
  androidrientation="horizontal"
  >
  <ImageView
android:paddingLeft="20px"
android:id="@+id/headImage"
android:src="@drawable/icon"
android:layout_width="50px"
android:layout_height="50px"
android:layout_marginBottom="5px"
android:layout_marginRight="10px"/>
  <LinearLayout
androidrientation="vertical"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView android:id="@+id/title"
android:textSize="18px"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
/>
<TextView android:id="@+id/mood"
android:textSize="16px"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
</LinearLayout>

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