Why can onOptionsItemSelected nullify variables?

Question

Android

Good afternoon, I do not quite understand what my problem is, could you take a look at my code. If I click on a dynamic menu, then listAdapter = null, or if I get a listView
, then I have no control over it - I can't do anything with it, for example, make it INVISIBLE.
If I click on R.id.filter_everything: or others that have an id everything is ok.

@Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        menu.clear();
        iDynamicToolbar.onChangeToolbar();
        if (actionBar != null) {
            subtitle = actionBar.getSubtitle();
        }
        if (viewGroup != null) {
            if (viewGroup.findViewById(R.id.detailFragmentContainer) != null) {
                menu.add(Menu.NONE, IDM_ZOOM, Menu.NONE, "Увеличить")
                        .setIcon(R.drawable.zoom).setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
            }
        }
        inflater.inflate(R.menu.goods_menu, menu);
        SubMenu subMenu = menu.addSubMenu("Выбор склада");
        Set<String> set = Remainder.loadScladName(getActivity());
        int menuId = 1;
        menuItemObjects = new ArrayList<>();
        if (set != null) {
            for (String nameSclad : set) {
                if (!nameSclad.equals("")) {
                    menuItemObjects.add(new MenuItemObject(nameSclad, menuId, true));
                    subMenu.add(IDM_GET_SCLAD, menuId, Menu.NONE, nameSclad);
                    subMenu.setGroupCheckable(IDM_GET_SCLAD, true, false);
                    menuId++;
                }
            }
        }
        for (MenuItemObject itemObject : menuItemObjects) {
            menu.findItem(itemObject.getId()).setChecked(true);
        }
        searchItem = menu.findItem(R.id.action_search);
        menuItem = menu.findItem(R.id.action_menu);
        filterEverything = menu.findItem(R.id.filter_everything);
        filterRest = menu.findItem(R.id.filter_rest);
        SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
        searchView = (SearchView) searchItem.getActionView();
        if (searchView != null) {
            if (searchManager != null) {
                searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
            }
            queryTextListener = new SearchView.OnQueryTextListener() {
                @Override
                public boolean onQueryTextChange(String newText) {
                    return true;
                }

                @Override
                public boolean onQueryTextSubmit(String s) {
                    query = s;
                    startSearchGoods(modeRadio, mMLCategory, query, null);
                    return true;
                }
            };
            searchView.setOnQueryTextListener(queryTextListener);
        }


@Override
    public boolean onOptionsItemSelected(MenuItem item) {
        Log.d(TAG, String.valueOf("onOptionsItemSelected: " + getPrefsTypeLoad() +"  "+ mGoodsAdapterLazy));
        //обработка нажатия динамического меню
        switch (item.getItemId()) {
            case R.id.filter_everything:
                item.setChecked(true);
                modeRadio = RADIO_ALL;
                if (getPrefsTypeLoad() == GoodsList.MODE_LIST && query == null) {
                    resetIndex();
                    listLazyGoods.clear();
                    initData(menuItemObjects);
                } else {
                    EventBus.getDefault().post(new GoodsListEventFilter(RADIO_ALL));
                    startSearchGoods(RADIO_ALL, mMLCategory, query, menuItemObjects);
                }
                break;
            case R.id.filter_rest:
                item.setChecked(true);
                modeRadio = RADIO_WITH_REST;
                if (getPrefsTypeLoad() == GoodsList.MODE_LIST && query == null) {
                    resetIndex();
                    listLazyGoods.clear();
                    initData(menuItemObjects);
                } else {
                    EventBus.getDefault().post(new GoodsListEventFilter(RADIO_WITH_REST));
                    startSearchGoods(RADIO_WITH_REST, mMLCategory, query, menuItemObjects);
                }
                break;
            case IDM_ZOOM:
                EventBus.getDefault().post(new GoodsListEventZoom());
                break;
        }

        for (MenuItemObject itemObject : menuItemObjects) {
            int itemId = itemObject.getId();
            if (item.getItemId() == itemId) {
                if (!item.isChecked()) {
                    if (getPrefsTypeLoad() == GoodsList.MODE_LIST) {
                        resetIndex();
                        listLazyGoods.clear();
                        item.setChecked(true);
                        itemObject.setChecked(true);
                        initData(menuItemObjects);
                        setSubtitle();
                    } else {
                        setSubtitle();
                        item.setChecked(true);
                        itemObject.setChecked(true);
                        startSearchGoods(modeRadio, mMLCategory, null, menuItemObjects);
                        setSubtitle();
                    }
                } else {
                    if (getPrefsTypeLoad() == GoodsList.MODE_LIST) {
                        resetIndex();
                        listLazyGoods.clear();
                        item.setChecked(false);
                        itemObject.setChecked(false);
                        initData(menuItemObjects);
                        setSubtitle();
                    } else {
                        item.setChecked(false);
                        itemObject.setChecked(false);
                        startSearchGoods(modeRadio, mMLCategory, null, menuItemObjects);
                        setSubtitle();
                    }
                }
            }
        }
        return super.onOptionsItemSelected(item);
    }