android populer

public class MainActivity extends ListActivity {
       static final String[] items = new String[] { "Babbage","Boole", "Berners-Lee",
                      "Atanasoff", "Allen","Cormack", "Cray","Dijkstra","Dix","Dewey",
                      "Erdos","Zebra" };

    ArrayAdapter<string> arrayadapter;
    ListView listview;
    ArrayList<string> arraylist;
    @Override
    public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        arraylist= new ArrayList<String>();
        for(int i=0;i<items.length;i++)
        {
            arraylist.add(FRUITS[i]);
        }
         Collections.sort(arraylist );//for sorting arraylist
        arrayadapter=new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,arraylist);
        listview=getListView();
        listview.setAdapter(arrayadapter);
        listview.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView parent,View view,
                                                 int position, long id) 
            {
                Toast.makeText(getApplicationContext(),
                            ((TextView) view).getText(), Toast.LENGTH_SHORT).show();
            }});}}
                                                                                          

                 

< ?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    > 
     <ListView
            android:id="@android:id/list"
            android:cacheColorHint="#00000000"
            android:scrollbars="none"
            android:fadingEdge="vertical"
            android:soundEffectsEnabled="true"
            android:dividerHeight="1px"
            android:padding="5dip"
            android:smoothScrollbar="true"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:drawSelectorOnTop="false"
            android:layout_marginLeft="10dip"
            android:layout_marginRight="10dip"
            android:layout_marginBottom="10dip"
            android:layout_weight="1"/> 

</LinearLayout> 

public class ListView1 extends ListActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        String[] phonenames = new String[] { "Android", "Windows7","Symbian", "iPhone",
                "Android", "Windows7", "Symbian", "iPhone",
                "Android", "Windows7", "Symbian", "iPhone" };
        setListAdapter(new ArrayAdapter<string>(this,
                                      android.R.layout.simple_list_item_single_choice,android.R.id.text1, phonenames));
        ListView list = getListView();
        list.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

    }
}