How do I NavigationService to navigate to a page instead of PageModel

[tonyyip1969]

I have below code currently, how do I achieve using NavigationService?

var page = new ScanQrCodePage(OnScanned, config =>
{
    
});

await Shell.Current.Navigation.PushAsync(page);  // <--  await _navigationService.GoToAsync(Navigation.Relative().Push(page));

[albyrock87]

@tonyyip1969 if I understood your example correctly, you're trying to push a page which scans a QR code based on a configuration factory (second parameter I see there in the constructor).
When the QR code has been read, you expect the page to pop and invoke a callback on the previous page.

I would still suggest using a view model, but if you really want to use a simple page, here's what you can do:

1. Remove arguments from page constructor
2. Make sure your page is registered as Scoped in the DI
3. In page constructor set BindingContext=this
4. Create a class or record to hold your 2 arguments, for instance QRCodeCaptureIntent
5. Implement IEnteringAware<QRCodeCaptureIntent> interface in your page (this is where you will receive the arguments)
6. Use the standard Nalu navigation API providing your page type instead of the page model Navigation.Relative().Push<ScanQRCodePage>

This should work out of the box.
I haven't felt the need of pushing pages directly from MVVM pattern, but if you can tell a good reason for doing this, I can easily add the I*Aware support to pages too so that step 3 above can be avoided.