list.setOnItemClickListener(new OnItemClickListener() {
   public void onItemClick(AdapterView<?> adapter, View v, int position, long id) {
       String value = list.getSelectedItem();
   }
}

public class MainActivity extends Activity {

 ListView listItemView;

 // Define string array.
 String[] listItemsValue = new String[] {"Android","PHP","Web Development","Blogger","SEO","Photoshop"};

 @Override
 protected void onCreate(Bundle savedInstanceState)
 {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_main);

 listItemView = (ListView)findViewById(R.id.listView1);
 ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_2, android.R.id.text1, listItemsValue);

 listItemView.setAdapter(adapter);

 // ListView setOnItemClickListener function apply here.

 listItemView.setOnItemClickListener(new OnItemClickListener()
 {
 @Override
 public void onItemClick(AdapterView<?> parent, View view,
 int position, long id) {
 // TODO Auto-generated method stub
 Toast.makeText(MainActivity.this, listItemsValue[position], Toast.LENGTH_SHORT).show();
 }
 });

 }


}