Widget

ListView

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

public class HelloListViewActivity extends ListActivity {
    /** Called when the activity is first created. */
    TextView t1;
    ArrayAdapter<String> ad;
    String str[]={"jisho","rahul", "Ajumal"};
    @Override
    public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          ad=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,str);
          setListAdapter(ad);
         
           }
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
               Toast.makeText(this, str[position], Toast.LENGTH_LONG).show();
        super.onListItemClick(l, v, position, id);
       
    }
   
}
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<?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" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/hello" />

    <ListView
        android:id="@+android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
    </ListView>

</LinearLayout>