ListView详解（二）之simpleAdapter用法

 1 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:paddingBottom="@dimen/activity_vertical_margin"
 6     android:paddingLeft="@dimen/activity_horizontal_margin"
 7     android:paddingRight="@dimen/activity_horizontal_margin"
 8     android:paddingTop="@dimen/activity_vertical_margin"
 9     tools:context="com.ycz.simpleadapterdemo.SimpleAdapterDemo" >
10 
11     <ListView
12         android:id="@+id/lv"
13         android:layout_width="fill_parent"
14         android:layout_height="fill_parent"      
15         />
16 
17 </RelativeLayout>

 1 <?xml version="1.0" encoding="utf-8"?>  
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
 3     android:layout_width="match_parent"  
 4     android:layout_height="match_parent"  
 5     android:orientation="horizontal" >  
 6 
 7     <ImageView  
 8         android:id="@+id/itemImage"  
 9         android:layout_width="wrap_content"  
10         android:layout_height="wrap_content"  
11         android:paddingLeft="10dp" />  
12   
13     <LinearLayout  
14        android:layout_width="match_parent"  
15        android:layout_height="wrap_content"  
16        android:orientation="vertical" >  
17          
18         <TextView   
19             android:id="@+id/itemTitle"  
20             android:layout_width="wrap_content"  
21             android:layout_height="wrap_content"  
22             android:textSize="20dp"  
23             android:textColor="#f0f"  
24             android:paddingLeft="10dp"/>  
25           
26                   
27         <TextView   
28             android:id="@+id/itemText"  
29             android:layout_width="wrap_content"  
30             android:layout_height="wrap_content"  
31             android:textSize="14dp"  
32             android:paddingLeft="10dp"/>  
33         
34    </LinearLayout>  
35 </LinearLayout>  

 1 package com.ycz.simpleadapterdemo;
 2 
 3 import java.util.ArrayList;
 4 import java.util.HashMap;
 5 
 6 import android.support.v7.app.ActionBarActivity;
 7 import android.os.Bundle;
 8 import android.widget.ListView;
 9 import android.view.View;
10 import android.widget.AdapterView;
11 import android.widget.AdapterView.OnItemClickListener;
12 import android.widget.SimpleAdapter;
13 
14 public class SimpleAdapterDemo extends ActionBarActivity {
15     private ListView lv;
16     @Override
17     protected void onCreate(Bundle savedInstanceState) {
18         super.onCreate(savedInstanceState);
19         setContentView(R.layout.main);
20         
21         lv=(ListView)findViewById(R.id.lv);
22         //创建动态数组数据源
23         ArrayList<HashMap<String,Object>> listItem=new ArrayList<HashMap<String,Object>>();
24         for(int i=0;i<10;i++){
25             HashMap<String,Object> map = new HashMap<String,Object>();
26             map.put("ItemImage", R.drawable.icon);
27             map.put("ItemTitle","第"+i+"行");
28             map.put("ItemText", "这是第"+i+"行");
29             listItem.add(map);
30         }
31         /*
32          *动态数组数据源中与ListItem中每个显示项对应的Key  
33          *String[]  source = new String[]{"ItemImage","ItemTitle","ItemText"}
34          *item.xml文件里面的一个ImageView ID和两个TextView ID 
35          *int[] destination = new int[]{R.id.itemImage,R.id.itemTitle,R.id.itemText}
36          * 从动态数组数据源listItem中，取出source数组中key对应的value值，填充到destination数组中对应ID的控件中去  
37          */
38         
39 
40         SimpleAdapter mSimpleAdapter=new SimpleAdapter(this,listItem,R.layout.item, new String[]{}, new int[]{R.id.itemImage,R.id.itemTitle,R.id.itemText});
41         lv.setAdapter(mSimpleAdapter);
42         lv.setOnItemClickListener(new OnItemClickListener(){
43             @Override
44             public void onItemClick(AdapterView<?>arg0,View arg1,int arg2,long arg3){
45                 setTitle("你点击了第"+arg2+"行！");
46             }
47         });
48     }
49 
50 }