android开发 列表显示（ListView）

<?xml version="1.0" encoding="utf-8"?>
<resources>

<string name="app_name">0_ListViewDemo</string>
<string name="hello_world">Hello world!</string>
<string name="menu_settings">Settings</string>
<string name="name">姓名</string>
</resources>

<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"
tools:context=".MainActivity" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/name"
/>
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@+id/listview"
></ListView>

</RelativeLayout>

package com.example.atestlistview;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.view.Menu;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {

private ListView listView;
private String[] name = {"张三","李四","王五","刘六","张三","李四","王五","刘六"};

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listview);
//创建一个ArrayAdapter
listView.setAdapter(new ArrayAdapter<String>(this,
android.R.layout.simple_list_item_1, name));
//listView注册一个元素点击事件监听器
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
//当某个元素被点击时调用该方法
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
Toast.makeText(MainActivity.this,name[arg2] ,
Toast.LENGTH_LONG).show();
}
});
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}

}