Rotate screen on ios <= 15

[MattePozzy]

Description

Hi,
I can't force to rotate the device screen on device with ios <= 15.
I've tested on an iphone with ios 15.7.2 but this code doesn't work.

      public partial async Task SetDeviceOrientation(DisplayOrientation displayOrientation)
       {
           if (_iosDisplayOrientationMap.TryGetValue(displayOrientation, out var iosOrientation))
           {
               if (UIDevice.CurrentDevice.CheckSystemVersion(16, 0))
               {
                   var scene = (UIApplication.SharedApplication.ConnectedScenes.ToArray()[0] as UIWindowScene);
                   if (scene != null)
                   {
                       var uiAppplication = UIApplication.SharedApplication;
                       // https://github.com/dotnet/maui/issues/6020#issuecomment-1100276727
                       var test = UIApplication.SharedApplication.ConnectedScenes
                           .OfType<UIWindowScene>()
                           .SelectMany(s => s.Windows)
                           .FirstOrDefault(w => w.IsKeyWindow)?.RootViewController;

                       if (test != null)
                       {
                           UIInterfaceOrientationMask NewOrientation;
                           if (iosOrientation == UIInterfaceOrientation.Portrait)
                           {
                               NewOrientation = UIInterfaceOrientationMask.Portrait;
                           }
                           else
                           {
                               NewOrientation = UIInterfaceOrientationMask.LandscapeLeft;
                           }
                           scene.Title = "PerformOrientation";
                           scene.RequestGeometryUpdate(
                               new UIWindowSceneGeometryPreferencesIOS(NewOrientation), error => { System.Diagnostics.Debug.WriteLine(error.ToString()); });
                           test.SetNeedsUpdateOfSupportedInterfaceOrientations();
                           test.NavigationController?.SetNeedsUpdateOfSupportedInterfaceOrientations();
                           await Task.Delay(1000); //Gives the time to apply the view rotation
                           scene.Title = "";
                       }
                   }
               }
               else
               {
                   UIDevice.CurrentDevice.SetValueForKey(new NSNumber((int)iosOrientation), new NSString("orientation"));
               }
           }
       }

How can I force the rotation on this kind of device?

[jfversluis]

Converted this to a discussion as it seems more of a how to question rather than a bug in the .NET MAUI SDK.

[WilliamWatterson86]

@MattePozzy - did you ever find a workaround for this?

[MattePozzy]

Hi,
with this code seems to work also on ios 15.

OrientationManager.LockOrientation = true;
if (displayOrientation == DisplayOrientation.Portrait)
{
    OrientationManager.CurrentOrientation = UIInterfaceOrientationMask.Portrait;
}
else
{
    OrientationManager.CurrentOrientation = UIInterfaceOrientationMask.Landscape;
}

UIDevice.CurrentDevice.SetValueForKey(new NSNumber((int)_iosDisplayOrientationMap[displayOrientation]), new NSString("orientation"));