Google Picker API: Use of setAppId

Question

Google picker api examples has an file-open example which doesn't set the app id (setAppId) and an upload example which does it.

I would like to get clarifications:

• when do you need to set the api id?
• Can I have a web application downloading a file from Google drive using the file picker without an app id?

Answer 1

For the Google Drive SDK, always set the App ID.

https://developers.google.com/drive/integrate-open