In order to utilize this component, one must first have a Google Developer Account. Then, one must create a new project under that Google Developer Account, enable the Google Sheets API on that project, and finally create a Service Account for the Sheets API.
How to create the Service Account, here:
http://ai2.appinventor.mit.edu/reference/other/googlesheets-api-setup.html
At the end of the whole process we will obtain a file of the form:
app-inventor-338017-8c72fd465555.json
We must upload that file to our application.
Let's look at an example:
p138_googlesheet_2.aia (5.9 KB)****[This app doesn't work because the identifiers are fake keys.]