Bug 34794 - Override for UIInterfaceOrientationMask does not seem to be called on iPad 64bit
Summary: Override for UIInterfaceOrientationMask does not seem to be called on iPad 64bit
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: XI 9.4 (iOS 9.2)
Hardware: PC Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2015-10-12 23:45 UTC by Cody Beyer (MSFT)
Modified: 2015-10-14 04:21 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

Xcode test case (41.79 KB, application/zip)
2015-10-13 07:30 UTC, Rolf Bjarne Kvinge [MSFT]

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Description Cody Beyer (MSFT) 2015-10-12 23:45:45 UTC
### Description

Using an override for UIInterfaceOrientationMask to set forced orientation does not appear to be called on iPad Air

### Sample


### Steps to Reproduce

1. Download sample
2. Run on iPad Air

### Expected Results

Should be forced landscape

### Actual Results

Is Portrait

### Versions

=== Xamarin Studio ===

Version 5.9.7 (build 22)
Installation UUID: 8ac4d87c-b82f-42fd-84d6-d10de207b0c8
	Mono 4.0.4 ((detached/d481017)
	GTK+ 2.24.23 (Raleigh theme)

	Package version: 400040004

=== Xamarin.Android ===

Version: (Business Edition)
Android SDK: /Users/codybeyer/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		4.0.3 (API level 15)
		4.4   (API level 19)
		5.0   (API level 21)
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

=== Apple Developer Tools ===

Xcode 7.0.1 (8228)
Build 7A1001

=== Xamarin.iOS ===

Version: (Business Edition)
Hash: 1d27ac2
Branch: master
Build date: 2015-09-25 18:08:44-0400

=== Xamarin.Mac ===

Version: (Business Edition)

=== Build Information ===

Release ID: 509070022
Git revision: 6bd1f169df44ca96addf8a035316c535a4fa46fa
Build date: 2015-09-30 12:30:15-04
Xamarin addins: 1c3e5c0859bdfec0ecd481a57ad6c03bc22f5536

=== Operating System ===

Mac OS X 10.11.0
Darwin Codys-MacBook-Pro.local 15.0.0 Darwin Kernel Version 15.0.0
    Wed Aug 26 16:57:32 PDT 2015
    root:xnu-3247.1.106~1/RELEASE_X86_64 x86_64
Comment 1 Rolf Bjarne Kvinge [MSFT] 2015-10-13 07:29:18 UTC
I can reproduce this with the attached sample, but I can also reproduce it with an Xcode sample, so it's not a bug in Xamarin.iOS.
Comment 2 Rolf Bjarne Kvinge [MSFT] 2015-10-13 07:30:06 UTC
Created attachment 13306 [details]
Xcode test case
Comment 3 Jonathan Peppers 2015-10-13 09:16:59 UTC
Hi Rolf,

In your Objective-C example, do need to change this method:

-(NSUInteger) supportsInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;

To this:

-(UIInterfaceOrientationMask) supportsInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;

See here: https://forums.developer.apple.com/thread/6165
Comment 4 Rolf Bjarne Kvinge [MSFT] 2015-10-13 12:37:41 UTC
@Jonathan, I tried it, and it doesn't change the outcome.
Comment 5 Jonathan Peppers 2015-10-13 12:58:47 UTC
Whoops, you have a typo in your Xcode project, it should be:

- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;

If I use this in your Xcode project instead, it is working on both a 32-bit iPad mini and a 64-bit iPad air.

So what I'm seeing in a Xamarin project is that the function isn't getting called on 64-bit devices, so iOS allows the controller to rotate.
Comment 6 Jonathan Peppers 2015-10-13 13:09:53 UTC
Ok, I kept trying it and it is still happening in an Xcode project.

I found a radar open about this: https://openradar.appspot.com/22854526
Comment 7 Rolf Bjarne Kvinge [MSFT] 2015-10-13 13:12:36 UTC
I just tested as well, and I can also reproduce with my Xcode project (which I put here now: https://github.com/rolfbjarne/bug34794)
Comment 8 Jonathan Peppers 2015-10-13 14:29:20 UTC
Ok, thanks for the help, I figured out what Apple did that broke this.

If you have Xcode 7, you need to add UIRequiresFullScreen = YES to Info.plist:


I tested and this solution works in both Xcode and Xamarin.iOS. The Hanx Writer app doesn't need multi-tasking at the moment (maybe never), so this solution works fine for us.
Comment 9 Rolf Bjarne Kvinge [MSFT] 2015-10-14 04:21:19 UTC
That's interesting, and thanks for the follow-up!