Check for null MenuHelper before setting presenter callback

            helper = mWindow.mContextMenu.showDialog(originalView, originalView.getWindowToken());

            helper = mWindow.mContextMenu.showDialog(originalView, originalView.getWindowToken());

        }

        }

        // If it's a dialog, the callback needs to handle showing sub-menus.

        if (helper != null) {

        // Either way, the callback is required for propagating selection to

            // If it's a dialog, the callback needs to handle showing

        // Context.onContextMenuItemSelected().

            // sub-menus. Either way, the callback is required for propagating

            // selection to Context.onContextMenuItemSelected().

            callback.setShowDialogForSubmenu(!isPopup);

            callback.setShowDialogForSubmenu(!isPopup);

            helper.setPresenterCallback(callback);

            helper.setPresenterCallback(callback);

        }

        mWindow.mContextMenuHelper = helper;

        mWindow.mContextMenuHelper = helper;

        return helper != null;

        return helper != null;