ListView与ArrayAdapter（二）

<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" >

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

</RelativeLayout>

package com.example.arrayadapter;

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

public class MainActivity extends Activity {

    private ListView lv;
    private String[] names = { "张一", "张二", "张三", "张四", "张五", "张六", "张七", "张八",
            "张九", "张十", "张十一", "张十二" };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lv = (ListView) findViewById(R.id.lv);
        lv.setAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, android.R.id.text1, names));
    }

}