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Re: calendar & repeating events api
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Re: calendar & repeating events api


  • Subject: Re: calendar & repeating events api
  • From: Eric Gorr <email@hidden>
  • Date: Sun, 21 Feb 2016 14:30:55 -0500

> On Feb 16, 2016, at 9:52 PM, Greg Parker <email@hidden> wrote:
>
>
>> On Feb 16, 2016, at 6:34 PM, Eric Gorr <email@hidden> wrote:
>>
>> When setting up a repeating event in Apple’s Calendar application, there is a lot of flexibility. For example, I can specify that an event repeats every month on the 5th Saturday. Of course, not every month has a fifth saturday, so for that month there is no event.
>>
>> What I am wondering is if there is direct api support for doing these date calculations…can I supply a set of parameters to a function and ask what the next 5th saturday of the month is?
>
> You can use NSDateComponents and NSCalendar to perform this sort of calculation. For example, assuming a Gregorian calendar, you can use an NSDateComponents object with weekday=7 and weekdayOrdinal=5 to represent "fifth Saturday", and use NSCalendar enumerateDatesStartingAfterDate:matchingComponents:options:usingBlock: to find "fifth Saturdays" after some starting date.

Is it possible to use NSDateComponents to specify the last Saturday of the month?

I was hoping that it might be possible to do with by using -1 for the weekdayOrdinal, but this does not appear to work.




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References: 
 >calendar & repeating events api (From: Eric Gorr <email@hidden>)
 >Re: calendar & repeating events api (From: Greg Parker <email@hidden>)

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