Android ListView详解(3)

3.接着是Activity代码
Java代码 
package com.lamp.db; 
 
import java.util.ArrayList; 
import java.util.HashMap; 
import java.util.List; 
import java.util.Map; 
 
import android.app.Activity; 
import android.database.Cursor; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.SimpleCursorAdapter; 
 
import com.lamp.domain.Person; 
import com.lamp.service.PersonService; 
 
public class DBActivity extends Activity { 
    private ListView listView = null; 
    private PersonService personService = null; 
 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
        personService = new PersonService(this); 
 
        listView = (ListView) this.findViewById(R.id.listView); 
        List<HashMap<String, String>> data = new ArrayList<HashMap<String, String>>(); 
        List<Person> personList = personService.getScrollData(0, 10); 
        HashMap<String,String> map = null; 
        for(Person person : personList){ 
            map = new HashMap<String,String>(); 
            map.put("personid", String.valueOf(person.getPersonid())); 
            map.put("name", person.getName()); 
            map.put("age", String.valueOf(person.getAge())); 
            data.add(map); 
        } 
        SimpleAdapter simpleAdapter = new SimpleAdapter(this, data,