Bug Game may start with incorrect Orientation

I guess it is a crash problem. The crash saves the last screen setting result, which will be read at startup, and then set the corresponding screen orientation.

 

I have a native iOS app which launches Unity iOS 2D games.
The unity games are opened on first launch in portrait mode filling 50-75% of the screen with the rest of the sceen showing the native iOS app behind that launched it.

Simply lifting/turning the physical device or setting the app to background and then foreground sets the orientation correct and the issue does not occur again until next time the app is opened from closed state.

Is this the same issue?

Unity game is set to autorotation with landscape left/right.
Native iOS allows portrait mode in login page but the rest of the app is in landscape mode.

Edit: Using
Unity 2022.3.6f1
Device: iPad Air 2 | iOS 15.7.5

 

@AI_NC I think it's best to create a bug report and attach a video + device logs (otherwise we cannot expect a fix)

 

@jperry_oddgames Will you create a new bug report for this problem?

 

Unity 2022.3.6f1

I noticed setting default orientation to 'Landscape Right' in Unity Player Settings, will set the orientation to 'Landscape Left' in the generated Xcode project.

This would mean that the orientation mapping/enum in Unity is not matching with the on for iOS.
@Alexey, could this have a relation to the orientation issues?

 

I think the most prominent manifestation of this BUG is:

Once this bug is triggered,

Code (CSharp):

1. Screen.orientation = XXX

will be invalid,

Because I have

Code (CSharp):

1. Screen.orientation = ScreenOrientation.LandscapeLeft;

in Start(),

After entering the game, it will also execute

Code (CSharp):

1. Screen.orientation = ScreenOrientation.Portrait

according to the situation;

 

And the BUG manifests itself as:
It was in Portrait or AutoRotation when the process was killed last time,
When entering the game again, the home button of the iPhone is in the Portrait state,
Even if the game screen and the mobile phone are both in LandscapeLeft at this time,
At this time, once you switch to the vertical version of the game screen, the vertical version of the game will be displayed under the horizontal screen

 

I removed all obj and code from the scene, created a new Canvas and Button, and added a new script

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5.  
6. public class NewBehaviourScript : MonoBehaviour
7. {
8.     // Start is called before the first frame update
9.     int orientation = 1;
10.     void Start()
11.     {
12.         Screen.orientation = ScreenOrientation.LandscapeLeft;
13.         orientation = 1;
14.     }
15.  
16.  
17.     // Update is called once per frame
18.     void Update()
19.     {
20.      
21.     }
22.  
23.  
24.     public void ChangeScreenOrientation()
25.     {
26.         if(orientation == 3)
27.         {
28.             Screen.orientation = ScreenOrientation.Portrait;
29.             orientation = 2;
30.         }
31.         else if(orientation == 2)
32.         {
33.             Screen.orientation = ScreenOrientation.LandscapeLeft;
34.             orientation = 1;
35.         }
36.         else
37.         {
38.             Screen.autorotateToLandscapeLeft = true;
39.             Screen.autorotateToLandscapeRight = true;
40.             Screen.autorotateToPortrait = false;
41.             Screen.autorotateToPortraitUpsideDown = false;
42.             Screen.orientation = ScreenOrientation.AutoRotation;
43.             orientation = 3;
44.         }
45.      
46.     }
47. }

Build of 2022.3.6

environment : IOS16.6 ip14pro

I opened the game,

multiple times by pressing the button to switch between horizontal and vertical screens,

killed the game,

and quickly reopened it,

making it easy to reproduce this bug

 

We get this on android, and we have never been able to reproduce it, but it also seems to stop all of the awake methods from firing in the first scene, essentially breaking the game.

 

Are you sure it's the same bug?I have never seen this bug on Android before,

It should be said that I have never seen this bug outside of IOS 16,

Because his need kill process and opened game again

 

I found a blog:
iOS16强制屏幕方向失效问题 - 简书 (jianshu.com)

When the game exits, calling the UnityCleanup function will cause il2cpp to clean up some sub threads. Due to the C # sub threads waiting, failing to clean up after 5 seconds will result in a crash

 

Hello dear support. NOT FIXED!!! There's a bug with enabling auto-rotation after entering the game, killing the process, and immediately entering the game again in a physical landscape orientaion. Our game only supports portrait mode. Unity version 2021.3.28f1. iPhone 11 with iOS 16.6 with unlocked auto-rotation option.

 

I used setNeedsUpdateOfSupportedInterfaceOrientations directly in the OC code to perform rotation, and returned the expected direction in all SupportedInterfaceOrientations. This bug will still be triggered, which should indeed be a bug in the IOS16 system