On Jan 4, 2010, at 11:17 AM, Nick Zitzmann wrote:
>
> On Jan 4, 2010, at 11:35 AM, Eric E. Dolecki wrote:
>
>> I am creating an iPhone view that has 12 months of views in it starting with
>> January.
>
> Don't make assumptions about calendars unless you are absolutely sure you can
> get away with them, e.g. every calendar currently in use in the world uses
> seven day weeks. In this case, you shouldn't, because, for example, while
> it's true that most calendar types have exactly 12 months in a year, the
> Hebrew calendar has 12 months in a regular year and 13 months in a leap year.
> You can use NSCalendar to figure out how many months there are in a given
> year.
>
>> For each subview (month) I need to get the 1st day of the month (which
>> calendar day it falls on as an int). For instance Jan 2010 begins on a
>> Friday (int of 5 I assume).
>
> Again, use NSCalendar and NSDateComponents. They are available on the iPhone
> OS; the older NSCalendarDate class is not available on the iPhone OS.
As a follow-on to Nick's caveats above, check out NSLocale Calendar Keys
in the NSLocale Class Reference for a list of calendars supported on the phone.
Note that the phone-supported calendars are a subset of those supported on Mac
OS X.
And NSCalendarDate appears to have vanished from Mac OS X Foundation as well .
. .
Amateur and Professional calendar scholars alike can visit this web site for
everything you never wanted to know about calendar lore:
http://emr.cs.iit.edu/home/reingold/calendar-book/index.shtml
Cheers,
. . . . . . . . Henry
=================================================
iPhone App Development and Developer Education . . .
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Mac OSX Application Development, Plus a Great Deal More . . .
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