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: David Reed <email@hidden>
- Date: Fri, 14 Jan 2011 17:59:15 -0500
Thanks. I should have indicated I did add an additional comment to my bug a month or two later when it wasn't fixed. The only response from Apple in my bug report is the original duplication comment.
Dave
On Jan 14, 2011, at 5:13 PM, Laurent Daudelin wrote:
> 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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