On 15 May 2014, at 19:53, Charles Srstka <cocoa...@charlessoft.com> wrote:
> On May 14, 2014, at 10:38 PM, Gerriet M. Denkmann <gerr...@mdenkmann.de> > wrote: > >> >> On 15 May 2014, at 02:00, Ken Thomases <k...@codeweavers.com> wrote: >> >>> >>> On May 14, 2014, at 8:41 AM, Jonathan Mitchell wrote: >>> >>>> Is there a way to obtain an NSDate object from a casually entered user >>>> string, say: 1 1 2015 or 25 jul 15? >>>> >>>> I have looked at the various NSDateFormatter and NSDate API and cannot >>>> spot what I am after. >>> >>> You might try NSDataDetector with type NSTextCheckingTypeDate. >> >> I did just that, and are a bit puzzled. >> >> 1. NSDataDetector recognises all date formats I encountered, which is rather >> good. >> >> >> 2. NSDataDetector ignores fractions of a second: >> e.g. "2014-05-14 11:33:53.126" gets converted to: "2014-05-14 11:33:53 >> +0700", which in my case is not really a problem. >> >> >> 3. But sometimes the date of NSDataDetector is 12h ahead (again ignoring >> fractions of a second): >> >> "2014-05-15 07:52:18.658" → "2014-05-15 19:52:18 +0700" >> "2014-05-14 05:59:46.490 +0700" → "2014-05-14 17:59:46.490 +0700" >> >> But not always - these work ok: >> "2014-05-15 08:22:48.135" >> "2014-05-15 09:15:35 +0700" >> Also, all times after about 13:00 are correct. >> >> This arbitrary advancement of 12h is obviously NOT acceptable. >> What am I doing wrong? > > That's the trouble with accepting arbitrary user input. If a user enters a > time of "1:23", s/he might mean 1:23 AM, 1:23 PM, or 1:23 military time, and > there's no real way to determine which is intended without reading the user's > mind. So, the system has to guess. Sometimes it may not guess correctly. > > If the user specifically enters "1:23 AM" to remove the ambiguity, this > should solve the issue. I always use a 24-hour clock. Is there a way, to make NSDataDetector aware of this fact? Some options I might set? Gerriet. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
