How to log-out from child SherlockActivity in sherlock tab

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http://stackoverflow.com – I am using Sherlock library for SherlockActionBar and Tab features. I have to log-out from child activities. I am doing finish ParentActivity but still I am not able to log-out. Child activity code: public class ChildActivityActionBar extends SherlockFragmentActivity implements OnNavigationListener{ private Point p = null; private int BUTTON_ID = 2; private int SEARCH_ID = 1; private ActionBar _mActionBar = null; private TextView _search=null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate( (HowTos)