How can we override iOS's UIApplicationDelegate events with Uno's project structure?

[abenadar]

I want to run some background tasks when the application is moved to the background through overriding UIApplicationDelegate.DidEnterBackground(UIApplication).

In Xamarin.iOS:

public class Application 
{
    static void Main(string[] args)
    {
        UIApplication.Main(args, null, "AppDelegate");
    }
}

[Register ("AppDelegate")]
public partial class AppDelegate : UIApplicationDelegate 
{ 
    public override void DidEnterBackground (UIApplication application) {
         nint taskID = UIApplication.SharedApplication.BeginBackgroundTask( () => {});
         new Task ( () => {
             UIApplication.SharedApplication.EndBackgroundTask(taskID);
         }).Start();
     }
}

Replacing this delegate with Uno's App class removes the inheritance, while making the default app inherit from UiApplication naturally breaks cross-platform availability.

Is there a recommended approach for this?

[jeromelaban]

The App.xaml.cs App class inherits from UIApplicationDelegate on iOS, you can use platform specific code to place it in the App.xaml.cs.