@Override public boolean onPrepareOptionsMenu(Menu menu) { super.onPrepareOptionsMenu(menu); final FragmentManager fm = getFragmentManager(); final RootInfo root = getCurrentRoot(); final DocumentInfo cwd = getCurrentDirectory(); final MenuItem createDir = menu.findItem(R.id.menu_create_dir); final MenuItem search = menu.findItem(R.id.menu_search); final MenuItem sort = menu.findItem(R.id.menu_sort); final MenuItem sortSize = menu.findItem(R.id.menu_sort_size); final MenuItem grid = menu.findItem(R.id.menu_grid); final MenuItem list = menu.findItem(R.id.menu_list); final MenuItem advanced = menu.findItem(R.id.menu_advanced); final MenuItem fileSize = menu.findItem(R.id.menu_file_size); sort.setVisible(cwd != null); grid.setVisible(mState.derivedMode != MODE_GRID); list.setVisible(mState.derivedMode != MODE_LIST); if (mState.currentSearch != null) { // Search uses backend ranking; no sorting sort.setVisible(false); search.expandActionView(); mSearchView.setIconified(false); mSearchView.clearFocus(); mSearchView.setQuery(mState.currentSearch, false); } else { mIgnoreNextClose = true; mSearchView.setIconified(true); mSearchView.clearFocus(); mIgnoreNextCollapse = true; search.collapseActionView(); } // Only sort by size when visible sortSize.setVisible(mState.showSize); final boolean searchVisible; if (mState.action == ACTION_CREATE || mState.action == ACTION_OPEN_TREE) { createDir.setVisible(cwd != null && cwd.isCreateSupported()); searchVisible = false; // No display options in recent directories if (cwd == null) { grid.setVisible(false); list.setVisible(false); } if (mState.action == ACTION_CREATE) { /// M: add to avoid seldom NullPointerException SaveFragment saveFragment = SaveFragment.get(fm); if (null != saveFragment) { saveFragment.setSaveEnabled(cwd != null && cwd.isCreateSupported()); } else { Log.e(TAG, "onPrepareOptionsMenu, SaveFragment is null"); } } } else { createDir.setVisible(false); searchVisible = root != null && ((root.flags & Root.FLAG_SUPPORTS_SEARCH) != 0); } // TODO: close any search in-progress when hiding search.setVisible(searchVisible); advanced.setTitle( LocalPreferences.getDisplayAdvancedDevices(this) ? R.string.menu_advanced_hide : R.string.menu_advanced_show); fileSize.setTitle( LocalPreferences.getDisplayFileSize(this) ? R.string.menu_file_size_hide : R.string.menu_file_size_show); /// M: If in force show advance mode, need hide advance menu advanced.setVisible(mState.action != ACTION_MANAGE && !mState.forceAdvanced); /// M: If cmd == null and mState.action == ACTION_CREATE, it means show /// RecentsCreateFragment, we need hide file size menu to avoid exception fileSize.setVisible( mState.action != ACTION_MANAGE && !(cwd == null && mState.action == ACTION_CREATE)); return true; }