NavType is not generated when used as a part of OpenResultRecipient

[sonrohan]

For example,

this works:

@Destination<ExternalModuleGraph>
@Composable
fun SomePage(
    someResult: SomeResult,
) {

}

@Parcelize
data class SomeResult(
  val data: String,
  val xyz: Int,
)

But this does not

@Destination<ExternalModuleGraph>
@Composable
fun SomePage(
    someResult: OpenResultRecipient<SomeResult>,
) {

}

@Parcelize
data class SomeResult(
  val data: String,
  val xyz: Int,
)

The issue is that when I use OpenResultRecipient, the resulting someResultNavType is not generated.

I did not see documentation about this, but it feels like a bug to me.

[sonrohan]

Do I need to write custom serializers for these now? Or is it a bug/gap @raamcosta ? It seems that it is able to create the file via ksp just fine when I do something like the top example, so it feels wasteful for me to write that serializer manually if it seems ksp can do it just fine.

Thanks!

[sonrohan]

I found a sort of "workaround", though it feels incorrect.

You can force it to generate these files by creating a dummy nav graph and marking these values within a wrapper data class (parcel).

@Parcelize
data class NavArgsWrapper(
    val someResult: SomeResult,
    ...
) : Parcelable

@NavHostGraph
annotation class AppNavGraph {
    @NavGraph<AppNavGraph>(
        navArgs = NavArgsWrapper::class,
    )
    annotation class SomeGraph

[raamcosta]

@sonrohan how are you passing back that result? Do you not have a ResultBackNavigator as a parameter of a Destination annotated Composable? 🤔