Error on list files using folderId

问题

I need to list files by folderId

Using the reference code. https://developers.google.com/drive/v2/reference/children/list

ERROR : Call to a member function listChildren() on null

回答1:

use This code $service->files->listFiles(array('q' => "'<FOLDER_ID>' in parents"));

来源：https://stackoverflow.com/questions/47786381/error-on-list-files-using-folderid