Re: UIDatePicker displays incorrect day in UIDatePickerDateAndTime mode for zones 12+ hours ahead of defaultZone
Re: UIDatePicker displays incorrect day in UIDatePickerDateAndTime mode for zones 12+ hours ahead of defaultZone
- Subject: Re: UIDatePicker displays incorrect day in UIDatePickerDateAndTime mode for zones 12+ hours ahead of defaultZone
- From: Laurent Daudelin <email@hidden>
- Date: Fri, 14 Jan 2011 14:13:32 -0800
From what I was told by Apple developer support, you're supposed to add a comment to your duplicate requesting an update for the original ticket.
-Laurent.
--
Laurent Daudelin
AIM/iChat/Skype:LaurentDaudelin http://www.nemesys-soft.com/
Logiciels Nemesys Software email@hidden
On Jan 14, 2011, at 13:57, email@hidden wrote:
>
> I'm not the original author of this thread, but I submitted a bug back in August 2010 about these issues. It was marked as a duplicate and I've never heard anything more. Perhaps I don't know how to properly follow duplicates. My bug # is 8320528.
>
> Dave
>
>
> On Jan 14, 2011, at 4:34 PM, Deborah Goldsmith wrote:
>
>> Did you write a bug for this? What is the bug number?
>>
>> Thanks,
>> Deborah Goldsmith
>> Apple Inc.
>>
>> On Jan 10, 2011, at 10:12 AM, Steve Mykytyn wrote:
>>
>>> UIDatePicker (4.2.1) shows differing dates for the modes
>>>
>>> UIDatePickerDate (correct), and
>>>
>>> UIDatePickerDateAndTime (incorrect)
>>>
>>> when the timezone you assign to the UIDatePicker is
>>>
>>> - more than 12 hours ahead (east) of the systemTimeZone of the iPhone.
>>>
>>> For example,
>>>
>>> device system time zone = America/Los Angeles = GMT - 8
>>>
>>> Honolulu date: Dec 7, 1941 7:48am
>>>
>>> Tokyo date: Dec 8, 1941 3:18am
>>>
>>> UIDatePicker will show the Tokyo date for mode
>>>
>>> UIDatePickerDate (correct): Dec 8, 1941
>>>
>>> UIDatePickerDateAndTime: Dec 7, 1941
>>>
>>> In fact, UIDatePicker will show incorrect dates in this case for any time zone east of GMT + 4 (always one day before correct day)
>>>
>>>
>>> A work-around in viewDidLoad is:
>>>
>>> self.datePicker.datePickerMode = UIDatePickerModeDateAndTime;
>>>
>>> self.datePicker.minuteInterval = 1;
>>>
>>> self.datePicker.timeZone = timeZone;
>>>
>>> [NSTimeZone setDefaultTimeZone:timeZone]; // *** add this line to force date picker to show correct date in all modes
>>>
>>> [self.datePicker setDate:tzDate animated:YES];
>>>
>>> and in viewWillDisappear add:
>>>
>>> [NSTimeZone resetSystemTimeZone];
>>>
>>> [NSTimeZone setDefaultTimeZone:[NSTimeZone systemTimeZone]];
>>>
>>> Not super happy about the work-around, but it should be fairly robust even if this bug is fixed in future.
>>>
>>> If anyone can shed some light on this behavior, please advise. No amount of fooling around with calendars, locales, etc. fixed this until i reset the default zone.
>>>
>>>
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>>
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