UI Android

package app.test;
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.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
public class Test extends Activity {
  ListView listView;
  private String[] data = { "1", "2", "3","4", "5", "6" };
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    listView = new ListView(this);
    listView.setAdapter(new ArrayAdapter(this,
        android.R.layout.simple_list_item_1, data));
    setContentView(listView);
    OnItemSelectedListener itemSelectedListener = new OnItemSelectedListener(){
      @Override
      public void onItemSelected(AdapterView parent, View arg1,
          int position, long arg3) {
        setTitle("t:  "+parent.getItemAtPosition(position).toString());
        
      }
      @Override
      public void onNothingSelected(AdapterView arg0) {
        setTitle("");
        
      }
      
    };
    listView.setOnItemSelectedListener(itemSelectedListener);
  }
}