Android学习之复杂列表显示

MyListViewDemo.java:

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

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MyListViewDemo extends Activity {
	private int pic[] = new int[] { R.drawable.pic_oracle,
			R.drawable.pic_javase, R.drawable.pic_javaweb,
			R.drawable.pic_javaee, R.drawable.pic_android, R.drawable.pic_game };
	private String data[][] = new String[][] { { "Oracle数据库", "张三" },
			{ "Java SE基础课程", "张三" }, { "Java WEB综合开发", "张三" },
			{ "Java EE高级开发", "张三" }, { "Android嵌入式开发", "张三" },
			{ "Java 游戏开发", "张三" } };

	private ListView datalist = null; // 定义ListView组件
	private List<Map<String, String>> list = new ArrayList<Map<String, String>>(); // 定义显示的内容包装
	private SimpleAdapter simpleAdapter = null; // 进行数据的转换操作

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		super.setContentView(R.layout.main);
		this.datalist = (ListView) super.findViewById(R.id.datalist); // 取得组件
		for (int x = 0; x < this.data.length; x++) {
			Map<String, String> map = new HashMap<String, String>(); // 定义Map集合，保存每一行数据
			map.put("pic", String.valueOf(this.pic[x])); // 与data_list.xml中的TextView组加匹配
			map.put("title", this.data[x][0]); // 与data_list.xml中的TextView组加匹配
			map.put("author", this.data[x][1]); // 与data_list.xml中的TextView组加匹配
			map.put("type", "免费");
			map.put("score", String.valueOf(R.drawable.start_05));
			this.list.add(map); // 保存了所有的数据行
		} 
		this.simpleAdapter = new SimpleAdapter(this, this.list,
				R.layout.data_list, new String[] { "pic", "title", "author",
						"type", "score" } // Map中的key的名称
				, new int[] { R.id.pic, R.id.title, R.id.author, R.id.type,
						R.id.score }); // 是data_list.xml中定义的组件的资源ID
		this.datalist.setAdapter(this.simpleAdapter);
	}
}

data_list.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="horizontal"
	android:layout_width="fill_parent"
	android:layout_height="wrap_content">
	<ImageView
		android:id="@+id/pic"
		android:layout_height="wrap_content"
		android:layout_width="wrap_content"
		android:padding="3px"/>
	<LinearLayout 
		xmlns:android="http://schemas.android.com/apk/res/android"
		android:orientation="vertical"
		android:layout_width="190px"
		android:layout_height="wrap_content"
		android:gravity="left">
		<TextView 
			android:id="@+id/title"
			android:textSize="16px"
			android:padding="3px"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" />
		<TextView 
			android:id="@+id/author"
			android:padding="3px"
			android:textSize="10px"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" />
	</LinearLayout>
	<LinearLayout 
		xmlns:android="http://schemas.android.com/apk/res/android"
		android:orientation="vertical"
		android:layout_width="200px"
		android:layout_height="wrap_content"
		android:gravity="left">
		<TextView 
			android:id="@+id/type"
			android:padding="3px"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" />
		<ImageView 
			android:id="@+id/score"
			android:padding="3px"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content" />
	</LinearLayout>
</LinearLayout>

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	<TextView 
		android:layout_width="fill_parent"
		android:layout_height="wrap_content" 
		android:textSize="25px"
		android:gravity="center_horizontal"
		android:text="java开发视频列表" />
	<ListView
		android:id="@+id/datalist" 
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"/>
</LinearLayout>