@Override
 protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.categories);
   mInflater = LayoutInflater.from(mContext);
   mCategoryUrl = WikiConfig.getMainCategoruUrl();
   mCloseCategories = new HashSet<CategoryChild>();
   initComponent();
   initData();
   UmengUpdateAgent.update(getParent());
 }
 @Override
 protected void onDestroy() {
   super.onDestroy();
 }