use simple list view in android

if you want use list view in action bar activity, it is very simple now for android 4.x

xml,

<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="com.example.caculate.RankActivity" >


    <ListView 
        android:id="@+id/listview"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" >
    </ListView> 

</RelativeLayout>

Activity,

package com.example.caculate;

import java.util.ArrayList;

import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class RankActivity extends ActionBarActivity {


    private String[] values = new String[] { "Android", "iPhone", "WindowsMobile",
            "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X",
            "Linux", "OS/2", "Ubuntu", "Windows7", "Max OS X", "Linux",
            "OS/2", "Ubuntu", "Windows7", "Max OS X", "Linux", "OS/2",
            "Android", "iPhone", "WindowsMobile" };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_rank);

        ListView listView1 = (ListView) findViewById(R.id.listview);

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, values);
        listView1.setAdapter(adapter);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        //
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        //
    }
}

the most important is that, we can use R.layout.simple_list_item_1 as our list view label and set it in actionbar activity, it will be very simple and esay using.