I have a public Google calendar for which I'd like to be able to post a link on a website that allows Android users to subscribe to the calendar. I know how to get the ics file but it seems that all that does is allow users to download the file and then add all of the current events to their own calendars, and it appears that this is a one time event. It doesn't look like events added after they have downloaded the ics file get added to their calendars.
To articulate what I'm looking for in a different way, I want to give non-tech-savvy Android users a way to easily subscribe to my calendar. I'd like to be able to post a link on my website. When Android users tap on that link, I want it to add my public Google calendar to their calendar and then keep them synchronized, so what when I add new events, those events show up on their calendar as well. Is that possible?