Google Calendar Sync Issues

[AllenChangMusic]

I've been able to modify the code that's available to allow for login.
I had to change the listen in webview engine to listen to URL to capture the auth token.
However, once i get to the Calendar view, it wont show any active calendars, nor will it add any calendar or events.

Specifically trying to add a calendar, the code won't execute beyond
cal = dao.calendars().insert(cal).execute();

Any pointers or suggestions would be welcome! I'm an amateur coder, so doing a lot through trial and error