How to setup Google Calendar synchronization via CalDAV on the Ubuntu smartphone

Overview
Google allows a Google Calendar account to synchronize via the CalDAV service. To add a Google Calendar account using Generic CalDAV perform the following stepssteps:

Select Accounts > Add New online Account > Generic CalDAV.
On the CalDAV screen:
Enter the full email address in the Username fields.
Enter the password used to access Google Calendar in the Password field.
In the Server Address field, enter https://www.google.com/calendar/dav/<emailaddress>/events where <emailaddress> is the Google email address.
Click Save.