Android SimpleAdapter

1.MainActivity.java

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

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

	 /*	1.context:上下文对象
		2.data:数据源(List<? extents Map<String,?

>> data)一个Map所组成的List集合.
		每个Map都相应ListView列表中的一行.
		每个Map(键-值对)中的键必须包括全部在from中所指定的键
		3.resource:列表项的布局文件ID
		4.from:Map中的键名
		5.to:绑定数据视图中的ID,与FROM成相应关系
		*/

		listView = (ListView)findViewById(R.id.listView);
		//1.新建适配器
		dataList = new ArrayList<Map<String,Object>>();
		//2.适配器载入数据源
		simp_adapter = new SimpleAdapter(this, getData(),R.layout.item,
				new String[] {"image","text"}, new int[]{R.id.image,R.id.text});
		//视图载入适配器
		listView.setAdapter(simp_adapter);
	}

	public List<Map<String, Object>> getData(){
		for(int i = 0;i<20;i++){
			Map<String, Object> map = new HashMap<String, Object>();
			map.put("image", R.drawable.ic_launcher);
			map.put("text", "Just a Demo."+i);
			dataList.add(map);

		}

		return dataList;
	}
}

2.activity_main.xml

<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" >

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</RelativeLayout>

3.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="match_parent"
    android:orientation="horizontal" >

    <ImageView
        android:id="@+id/image"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        android:src="@drawable/ic_launcher" />

    <TextView
        android:id="@+id/text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Demo"
        android:textColor="#000000"
        android:textSize="20sp" />

</LinearLayout>

效果图:

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