[Swift] FSCalendar: Dot Mark Doesn’t Appear Until the Month View Changes

While implementing a feature to add dot marks to specific dates using FSCalendar and Realm, I encountered an issue: the dot marks only appeared after swiping to change the month view and then returning to the original month. Here’s a record of the solution for reference. (2022/1/20)

Environment:

OS: macOS Monterey ver 12.0.1
Xcode: Version 13.2.1
Swift: Version 5.5.2

Test 1

I tried setting the dot marks in tableView(_:willDisplay:forRowAt:).

• Reference: Stack Overflow – FSCalendar Event Dot Not Appearing
• Result: The dots only appeared after tapping on a cell.
• Cause: This suggested that I needed to adjust the timing for displaying the dot marks, such as considering viewWillAppear.

Test 2

I changed the screen transition method from a modal to a push transition.

• Result: The dot marks successfully appeared when switching to a push transition.
• Reference Site: re35.org – FSCalendar Refresh

Source Code

Source Code: GitHub Repository

Final Thoughts

I hope this helps someone facing a similar issue!