ListActivity in Andriod

//pbListActivity.java
package com.pbAndroid.listActivity;

//import android.app.Activity;
import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class pbListActivity extends ListActivity
{
	static final String[] ACTIVITY_CHOICES = new String[]
	    	{
	    	"Action 1",
	    	"Action 2",
	    	"Action 3"
	    	};
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.main);
        
        setListAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_multiple_choice, ACTIVITY_CHOICES));
       
        getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);
        getListView().setTextFilterEnabled(true);
        
        OnItemClickListener listener = new OnItemClickListener() {
        	public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3)
        	{
        		switch(arg2)
        		{
        		case 0:
        			Toast.makeText(pbListActivity.this, "Action 000", Toast.LENGTH_SHORT).show();
        			break;
        		case 1:
        			Toast.makeText(pbListActivity.this, "Action 001", Toast.LENGTH_SHORT).show();
        			break;
        		case 2:
        			Toast.makeText(pbListActivity.this, "Action 002", Toast.LENGTH_SHORT).show();
        			break;
        		default:
        			break;
        		}
        	}
		};
        getListView().setOnItemClickListener(listener);
    }
        
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ListView 
        android:id="@+id/android:list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:drawSelectorOnTop="false"></ListView>
   	<TextView 
   	    android:id="@+id/android:empty"
   	    android:layout_width="match_parent"
   	    android:layout_height="wrap_content"
   	    android:text="empty"></TextView>

</LinearLayout>