Help me.
I want to use the Google Calendar API from my own iOS app.
First, I experimented with the API key, but it was not adopted because it was necessary to publish the entire calendar.
I then experimented with Outh2 authentication, but the only way was to display the Google authentication screen.
Service account verification could not find a sample in the iOS app.
The app itself uses ID password authentication, so I don't want to add google authentication.
Please give me some good advice.