iOS: `UIScene` lifecycle will soon be required. Failure to adopt will result in an assert in the future.

[pozirk]

Hello,

I get this message in console when debugging for iOS:

UIScene lifecycle will soon be required. Failure to adopt will result in an assert in the future.

Should I start worrying or something?

Thank you.

[joshtynjala]

Based on some quick research, this appears to be something that will need to be provided by an update to SDL. There's not really much we can do on the Lime side, and we just need to wait for SDL.

[Fancy2209]

Based on some quick research, this appears to be something that will need to be provided by an update to SDL. There's not really much we can do on the Lime side, and we just need to wait for SDL.

SDL3 Provide a new Callbacks Approach that can be used instead of having a Main Function, I wonder if that meets the new requirements

[joshtynjala]

SDL3 Provide a new Callbacks Approach that can be used instead of having a Main Function, I wonder if that meets the new requirements

As I understand it, this warning is specifically related to integration with native iOS UIKit classes. Maybe there's some overlap there, but SDL will probably still need to tweak their UIKit code to fix this warning/assert.

[IriySoft]

I found that this issue causes a bug in iOS builds (observed on iPhones and iPads with iOS 26+): Activate/Deactivate events are not dispatched, that can be a source of really bad issues in iOS apps. SDL has scene-based UI lifecycle supported starting from version 3.4.0.

More info in this thread: https://community.openfl.org/t/ios-activate-deactivate-events-dont-trigger/14454/15