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Using the following sample, when a DateTimePicker is coupled with a custom picker, opening the DateTimePicker decrements the values present
Possible regression of 24580
### Steps to Reproduce
1. Download sample
2. Deploy to iOS Simulator
3. Attempt to modify date within DateTimePicker
### Expected Results
The picker should open a dialog with the value of the picker selected
### Actual Results
The picker dialog opens with date decremented
=== Xamarin Studio ===
Version 5.9.7 (build 9)
Installation UUID: 41b41c03-d4de-45ee-92ac-f4a30df8e7e0
Mono 4.0.4 ((detached/d481017)
GTK+ 2.24.23 (Raleigh theme)
Package version: 400040004
=== Apple Developer Tools ===
Xcode 7.0.1 (8228)
=== Xamarin.Mac ===
=== Xamarin.iOS ===
Version: 126.96.36.199 (Business Edition)
Build date: 2015-09-18 23:22:05-0400
=== Xamarin.Android ===
Version: 188.8.131.52 (Business Edition)
Android SDK: /Users/tim/Library/Developer/Xamarin/android-sdk-macosx
Supported Android versions:
2.3 (API level 10)
4.0.3 (API level 15)
4.4 (API level 19)
5.0 (API level 21)
5.1 (API level 22)
Java SDK: /usr
java version "1.7.0_71"
Java(TM) SE Runtime Environment (build 1.7.0_71-b14)
Java HotSpot(TM) 64-Bit Server VM (build 24.71-b01, mixed mode)
=== Xamarin Android Player ===
Version: Unknown version
Location: /Applications/Xamarin Android Player.app
=== Build Information ===
Release ID: 509070009
Git revision: 31fa64709030b3edb971237780a452a4c69943c4
Build date: 2015-09-17 11:44:37-04
Xamarin addins: b105d33d8cd72911ff2cf3ee0b7715d37e5f19a6
=== Operating System ===
Mac OS X 10.11.0
Darwin Tims-iMac.local 15.0.0 Darwin Kernel Version 15.0.0
Wed Aug 26 16:57:32 PDT 2015
Related to bug: https://bugzilla.xamarin.com/show_bug.cgi?id=24580
I believe that this issue may be directly related to this one: https://bugzilla.xamarin.com/show_bug.cgi?id=34739
Paul. Try downloadning the test case. Can you replicate the error?
That would be the test case from this original bug https://bugzilla.xamarin.com/show_bug.cgi?id=24580
Let me elaborate on what I found after several hours of investigation last week as there are several parameters which will cause the bug to occur.
The bug is time/time zone dependent. Running the bug before 8PM EST (-5, my time zone) will not cause it to occur. Running it after that point causes the first two selectors in the picker to not work. Its timezone is based on GMT, and unless I missed something, even setting the custom picker's time zone to UTC did not actually change this value when I delved into the visual element in the XS watcher. This may not be true, though, so please don't hold me to it. The thing is, however, that 8PM EST would be 12AM UTC, but the extra hour for DST is being factored in.
If you manually go into your system settings and change the local time (which affects the time on the iOS simulator, there are varying affects going on. Setting the date and time ahead of UTC (say +2 for Paris or +9 for Tokyo) causes completely different effects; I'm going to attach a .zip of screenshots from the 9th of what I personally have seen. What you should see is as follows:
- At 1:11 PM (-5), the picker is fine.
- At 5:12 UTC (-/+0), the picker is still fine.
- At 8:13 (+3), the date, month, and year are off as described in the initial report.
- At 2:14 (+9), the same thing happens as +3.
The report I linked prior was filed in the last couple of days and other than being an extreme coincidence, I would not be surprised if the two are related.
Created attachment 13294 [details]
Simulator in various time zones
Cool! Thank you for you efforts. I'll see if I can get my customer support contact to move with this info.
Set your picker timezone to UTC. There seems to be some weird behaviors in
UIKit if you dont.