At first, I knew there is no public APIs for this approach.
Tapping an event from iOS8 native calendar widget launches calendar with specific event. So, I can guess that there must be a URL scheme for it. Because widget and calendar works on each sand box, So, the NSURL must be used.
I found a some clues from iPhoneDevWiki.net.
It says that calshow:x?eventid=id is an URL scheme that opens specific event, and it is used by SpringBoard.
Since the value of the id param is not described clear,
So, I have tested this url scheme with:
EKEvent.calendarItemIdentifierEKEvent.externalCalendarItemIdentifierEKEvent.eventIdentifier
None of them did work.
The wiki may be outdated.
Is there anyone who could opens or reveal the specific event with native calendar?
And I found another clue from similar questions in Stack Overflow.
The calshow: scheme.
It seems to used for open calendar with specific date. It can be used as calshow:[time interval since reference date], the reference date seems to 1/1/2001
It can be used to reveal an event rather than opens it. However, when the calendar is not running on background, This approach also not works.
And I also found that the x-apple-calevent scheme can launches calendar also , But I don't know the details(path and params) at all.
Any clues and opinions will be welcomed.
Best Regars.
