I'm having trouble finding if using a data class i...

# compose

[Chris Johnson]

I'm having trouble finding if using a data class is supported as the start destination of a graph in the safeargs compose navigation framework. Currently it crashes saying the class isn't serializable even though it's marked as such. I assume this means it's not supported... but if that's the case what's the recommended approach for needing to pass arguments to the start of your graph?
Edit: Solved in 🧵

[Chris Johnson]

Needed to make sure when I was calling that data class I was creating an instance of the data class instead of trying to refer to it as an object 🤦‍♂️
So instead of navController.navigate(News.Home) it needed to be navController.navigate(News.Home())

[Pablichjenkov]

Good catch 🎣

[Chris Johnson]

Good video I stumbled across finally that helped me figure it out

https://www.youtube.com/watch?v=8m1W4PyYMYQ▾

[Ian Lake]

FWIW, we should be throwing a Lint error for this case, specifically telling you it should be an instance of the class: https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:navigati[…]idx/navigation/runtime/lint/WrongNavigateRouteDetectorTest.kt

[Ian Lake]

Please file an issue if that Lint check isn't firing for you: https://issuetracker.google.com/issues/new?component=409828&template=1093757

[agrosner]

It’s happened to me also in generated code from an internal code generator library.
It would be awesome if kotlin introduced a way to enforce “@Serializable” as part of the type . Like
navigate(route: @Serializable Any)
Enforces the type passed in applies the serializable annotation

[Ian Lake]

If you file something on YouTrack, please include a link to it here

[agrosner]

https://youtrack.jetbrains.com/issue/KT-72190/Add-Ability-to-Enforce-annotated-types-on-objects-Serializable