@Override protected void onDestroy() { // TODO Auto-generated method stub JshFragmentActivity jshactivit = (JshFragmentActivity) lam.getActivity("jsh"); if (jshactivit != null) { jshactivit.onDes(); } DhbFragmentActivity dhbactivit = (DhbFragmentActivity) lam.getActivity("dhb"); if (dhbactivit != null) { dhbactivit.onDes(); } CshFragmentActivity cshactivit = (CshFragmentActivity) lam.getActivity("csh"); if (cshactivit != null) { cshactivit.onDes(); } super.onDestroy(); }