Android -- listview的使用， Inflater打气筒创建View对象，三种数据Adapter

1. 代码示例，（ 数据库来源上篇的数据）

MainActivity.java

public class MainActivity extends Activity {

	private ListView lv1 = null;
	private List<NoteBean> lists = null;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		lv1 = (ListView) findViewById(R.id.lv1);

		NoteDao dao = new NoteDao(this);
		lists =  dao.findAll();

		// 设置listview的数据了.
		// 采用 mvc的方式 设计listview控件
		// model 数据
		// view listview的控件
		// control 控制

		//Adapter一: BaseAdapter, 可以自己通过xml布局设计view
		//lv1.setAdapter(new MyAdapter());

		//Adapter二: ArrayAdapter 方便显示单一文本的listview
		//lv1.setAdapter(new ArrayAdapter<String>
		//(this, R.layout.item, R.id.item_name, new String[]{"aaa","bbb","vvv"}));

		//Adapter三: SimpleAdapter
		List<Map<String, Object>> data = new ArrayList<Map<String, Object>>();

		//map中还可以存放item对应的图标ID  R.drawable.*
		Map<String, Object> item1 = new HashMap<String, Object>();
		item1.put("image", R.drawable.image1);
		item1.put("id", "1");
		item1.put("name", "kevin");
		item1.put("money", "1000");

		Map<String, Object> item2 = new HashMap<String, Object>();
		item2.put("image", R.drawable.image2);
		item2.put("id", "2");
		item2.put("name", "xiang");
		item2.put("money", "2000");

		data.add(item1);
		data.add(item2);

		lv1.setAdapter(new SimpleAdapter(this, data, R.layout.item,
				new String[]{"image","id","name","money"},
				new int[]{R.id.image,R.id.item_id,R.id.item_name,R.id.item_money}));

	}

	private class MyAdapter extends BaseAdapter{

		/**
		 * 控制listview里面有多个条目.
		 */
		@Override
		public int getCount() {
			return lists.size();
		}

		/**
		 * 返回每个位置对应的view对象
		 */
		@Override
		public View getView(int position, View convertView, ViewGroup parent) {

			View v = View.inflate(MainActivity.this, R.layout.item, null);
			TextView id = (TextView) v.findViewById(R.id.item_id);
			id.setText(lists.get(position).getId()+"");
			TextView name = (TextView) v.findViewById(R.id.item_name);
			name.setText(lists.get(position).getName());
			TextView money = (TextView) v.findViewById(R.id.item_money);
			money.setText(lists.get(position).getMoney() + "");

			return v;
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return null;
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return 0;
		}
	}
}

activity_main.xml， activity布局

<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/lv1"
        android:layout_width="match_parent"
    	android:layout_height="match_parent">

    </ListView>

</RelativeLayout>

item.xml， listview需要的view布局

<?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:src="@drawable/ic_launcher"
        />

    <TextView
        android:id="@+id/item_id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/item_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

    <TextView
        android:id="@+id/item_money"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView" />

</LinearLayout>