ListView

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class ListEx extends ListActivity {
    /** Called when the activity is first created. */
   
String s[];
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.main);
        ListView l1=getListView();
        s=getResources().getStringArray(R.array.s);
       
        l1.setChoiceMode(2);
        l1.setTextFilterEnabled(true);
        setListAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_expandable_list_item_1,s));
       
    }
    public void onListItemClick(ListView parent, View v, int position, long id)
    {
    parent.setItemChecked(position,parent.isItemChecked(position));
    Toast.makeText(this,"you have selected" +":"+ s[position],
    Toast.LENGTH_SHORT).show();
    }
}