ListView with Footer Example Android

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
/**
 * Demo Activity that will display the ListView and footer.
 * @author techin
 */
public class Demo extends Activity {
  ListView listView;
 TextView textView;
  String array[]=new String[]{"a","b","c","d","e","f","g","h","i"};
  @Override
    public void onCreate(Bundle savedInstanceState) {
      
  super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
      
      
        listView = (ListView)findViewById(R.id.ListView01);
        textView = (TextView)findViewById(R.id.TextView01);
      
        /**
         * Setting ListView adapter using AttayAdapter.
         */
      
        listView.setAdapter(new ArrayAdapter(this,android.R.layout.simple_list_item_1,array));
      
      
        /**
         * Implementing On click event of the ListView getting the item that is clicked.
         */
      
        listView.setOnItemClickListener(new OnItemClickListener() {
   public void onItemClick(AdapterView arg0, View arg1, int arg2,
     long arg3) {
    // TODO Auto-generated method stub
     Toast.makeText(Demo.this,"Position"+arg2, Toast.LENGTH_SHORT).show();
     textView.setText(array[arg2]);
   }
                 });
 }
}