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SimpleAdapter的用法

 

Mainactivit.java

 1 package com.kale.listview; 2  3 import java.util.ArrayList; 4 import java.util.HashMap; 5 import java.util.List; 6 import java.util.Map; 7  8 import android.app.Activity; 9 import android.os.Bundle;10 import android.view.View;11 import android.widget.AdapterView;12 import android.widget.AdapterView.OnItemClickListener;13 import android.widget.AdapterView.OnItemSelectedListener;14 import android.widget.ListView;15 import android.widget.SimpleAdapter;16 17 public class MainActivity extends Activity {18     19     ListView myLv;20     21     @Override22     protected void onCreate(Bundle savedInstanceState) {23         super.onCreate(savedInstanceState);24         setContentView(R.layout.activity_main);25         26         myLv = (ListView)findViewById(R.id.red_listView_id);27         //定义5个人名数组,5个性别数组,5个图片(图省事,我用一个图片代替了)28         final String []name = {"Jack","Tony","Tom","Luna","Nacy"};29         String []sex = {"male","male","male","female","female"};30         int []pic = {R.drawable.kale,R.drawable.kale,R.drawable.kale,R.drawable.kale,R.drawable.kale};31         32         //建立一个list,里面的元素师Map,Map中是String,object33         List<Map<String, Object>> list = new ArrayList<Map<String,Object>>();34         for (int i = 0; i < name.length; i++) {35             //建立list中的子元素,用键值对的形式来存放数据36             Map<String, Object> listItem = new HashMap<String, Object>();37             listItem.put("picture", pic[i]);38             listItem.put("name", name[i]);39             listItem.put("sex", sex[i]);40             //将子元素添加入list中41             list.add(listItem);42         }43         44         //建立一个simpleAdapter45         //1.Context对象,2.list对象,3.item的布局文件,4.各个元素来源的键名,5.各个元素对应控件的id46         SimpleAdapter adapter = new SimpleAdapter(this, list, R.layout.item, 47                 new String[] {"picture","name","sex"}, 48                 new int[] {R.id.pic_imageView_id,R.id.name_textView_id,R.id.sex_textView_id});49         50         myLv.setAdapter(adapter);51         myLv.setOnItemClickListener(new OnItemClickListener() {52 53             @Override54             public void onItemClick(AdapterView<?> arg0, View parent, int position,long id) {55                 // TODO 自动生成的方法存根56                 System.out.println("onItemClick"+name[position]+"被选中了");57                 58             }59         });60         //列表项被选中后的监听器,两个监听器的区别参考这篇文章:http://blog.csdn.net/bcai2/article/details/1502897961         //就和电视的菜单一样,上下选择来触发选中(selected)事件,按下确定才是点击(click)事件。62         myLv.setOnItemSelectedListener(new OnItemSelectedListener() {63 64             @Override65             public void onItemSelected(AdapterView<?> parent, View arg1,int position, long id) {66                 // TODO 自动生成的方法存根67                 System.out.println("onItemSelected"+name[position]+"被选中了");68             }69 70             @Override71             public void onNothingSelected(AdapterView<?> arg0) {72                 // TODO 自动生成的方法存根73                 74             }75         });76     }77 }

 

activity_main.xml

<LinearLayout 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:orientation="vertical" >    <!-- 设置红色分割线的listView -->    <ListView         android:id="@+id/red_listView_id"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:divider="#f00"        android:dividerHeight="2dp"        android:layout_gravity="center"        android:headerDividersEnabled="false"/>    </LinearLayout>

 

item.xml

<?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="wrap_content"    android:orientation="horizontal" >    <ImageView        android:id="@+id/pic_imageView_id"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/ic_launcher" />    <TextView        android:id="@+id/name_textView_id"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Large Text"        android:layout_marginLeft="10dp"        android:layout_gravity="center_vertical"        android:textAppearance="?android:attr/textAppearanceLarge" />    <TextView        android:id="@+id/sex_textView_id"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_gravity="center_vertical"        android:layout_marginLeft="10dp"        android:textColor="#0000ff"        android:text="Small Text"        android:textAppearance="?android:attr/textAppearanceSmall" /></LinearLayout>