Android编程7:控件ListView使用

控件ListView是一个重要的控件，可以被用作用户列表等显示，下面进行它的操作测试。

下面代码实现了生成了一个ListView显示，并对每个条目的单击事件作出响应.

源代码：

    package com.list;

import java.util.ArrayList;
import java.util.HashMap;

import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class ListTest extends Activity 
{
	/** Called when the activity is first created. */

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		ArrayList<HashMap<String, Object>> users = new ArrayList<HashMap<String, Object>>();
		for (int i = 0; i < 20; i++) {
			HashMap<String, Object> user = new HashMap<String, Object>();
			user.put("img", R.drawable.icon);
			user.put("username", "姓名(" + i+")");
			user.put("age", (20 + i) + "");
			users.add(user);
		}
		SimpleAdapter saImageItems = new SimpleAdapter(this,
                users,// 数据来源
                //R.layout.user,//每一个user xml 相当ListView的一个组件 
                R.layout.user_layout,//每一个user xml 相当ListView的一个组件 
                new String[] { "img", "username", "age" },

                // 分别对应view 的id
                new int[] { R.id.img, R.id.name, R.id.age });

		//获取适配器
		ListView listView = (ListView) findViewById(R.id.users);
		listView.setAdapter(saImageItems);
		listView.setOnItemClickListener(new OnItemClickListener() 
		{
		    @Override
		    public void onItemClick(AdapterView<?> parent,View view,int position,long id) 
		    {
		        ListView listView = (ListView) parent;
		        Log.v("Test", "id = " + id + "("+ listView.getItemAtPosition(position).toString() + ")");
		    }
		});
		
		/*
		listView.setOnItemSelectedListener(new OnItemSelectedListener() {
		    @Override
		    public void onItemSelected(AdapterView<?> parent,View view,int position,long id) 
		    {
		        ListView listView = (ListView) parent;
		        Log.v("Test", "id = " + id + "("+ listView.getItemAtPosition(position).toString() + ")");
		    }

			@Override
			public void onNothingSelected(AdapterView<?> parent) 
			{
				// TODO Auto-generated method stub
				
			}
		});
		*/
	}	
}
  

Android编程7:控件ListView使用