navArgs class from another module cannot have fields with default values

[Sannedak]

Hi! I want to make module "navigation" where will be placed all navigation args, but have compilation error:
There was an issue with 'navArgsDelegate' of composable 'ArticleDetailsScreen': make sure it is a class with a primary constructor

Minimal reproducible repo

In ArticleDetailsNavArgs instead of just id I want to pass object in the future. I don't want to duplicate exact the same object in another modules and map one to another.

Thanks for your work! Awesome lib!

[raamcosta]

Hi @Sannedak !

This is not how this library is designed to work. The navigation module depends on all others, not the other way around. The navigation module builds a Navigation graph (from the outputs of each module) and calls the DestinationsNavHost passing the graph.

I suggest you check my two multi module forks of very well known developers in the community Chris Banes and Philipp Lackner:

• https://github.com/raamcosta/CalorieTracker
  (each feature module outputs a nav graph that gets tied in the app module and passed into the DestinationsNavHost)
• https://github.com/raamcosta/tivi
  (each feature module outputs a single Destination that gets connected to multiple nav graphs in the app module and passed into the DestinationsNavHost)
  Let me know if this helped! 🙂

[Sannedak]

Thanks. I'll continue to use arguments duplication for now.

[cvb941]

I'm encountering the same issue.

In my case, I'm using a data class from a shared KMM module as a navArgsDelegate for screen @destinations in an android app module.

[raamcosta]

This works now, but the class cannot have default values.