I use the new Google drive api and I can\'t get All folders from my google drive, I only get the folders that I create with the google drive api... Anybody know why happens
By design, GDAA supports only the FILE scope, i.e. it will find / list only folders / files created by the Android app.
There are 2 ways around it:
In case you want to study how the two APIs behave, I've put two different demos on the Github (the REST and the GDAA CRUD demo wrappers).
The second part of your question does not have answer. You don't set the app folder, you can only get it's DriveFolder id. You use it to create / retrieve objects.
DriveFolder appFldr = Drive.DriveApi.getAppFolder(mGooleApiClient);
appFldr.createFile(...);
appFldr.createFolder(...);
appFldr.listChildren(...);
appFldr.queryChildren(...);
... and don't forget to add the SCOPE_APPFOLDER scope
Good Luck