SimpleAdapter 總結2

MainActivity.java文件
package com.example.demo11listview;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.ListResourceBundle;
import java.util.Map;

import javax.security.auth.PrivateCredentialPermission;

import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;



public class MainActivity extends Activity {
private ListView listView;
private ArrayAdapter<String>arr_adapter;
private SimpleAdapter simp_adapter;
private List<Map<String,Object>>dataList;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        listView = (ListView)findViewById(R.id.listView);
        //新建一個適配器
        //ArrayAdapter (上下文，當前ListView加載的每一個列表項所對應的佈局文件，數據源）
        //適配器加載數據源
        dataList=new ArrayList<Map<String,Object>>();
        //1 String[]arr_data = {"慕課網","慕課網2","慕課網3","慕課網4"};
        //1 arr_adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, arr_data);
        simp_adapter = new SimpleAdapter(this,getData() , R.layout.item, new String[]{"pic","text"},new int[]{R.id.pic,R.id.text} );
        //視圖（listview）加載適配器
        //1 listView.setAdapter(arr_adapter);
        listView.setAdapter(simp_adapter);
    }
    private List<Map<String,Object>> getData()
    {
    for(int i=0;i<20;i++)
    {
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("pic", R.drawable.ic_launcher);
    map.put("text", "慕課網"+i);
    dataList.add(map);
    }
    return dataList;
    }
}
activity_main.java 文件
<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=".MainActivity" >

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>
item.java 文件
</RelativeLayout>
<?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="match_parent"
    android:orientation="horizontal" >
    
    
    <ImageView 
        android:id="@+id/pic"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/ic_launcher"
        android:layout_marginLeft="15dp"/>
     <TextView 
         android:id="@+id/text"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:textSize="20sp"
         android:text="demo"
         android:textColor="#000000"/>

</LinearLayout>