Question: Is there a way to Parcelize generic type parameters in Sealed Classes?

[arkivanov]

Question: Is there a way to Parcelize generic type parameters in Sealed Classes?

[arkivanov]

Perhaps RawValue wouldn't help in all cases, because the data would be written with writeValue. It may crash at runtime if the actual type is not supported by writeValue.

You can try making T : Parcelable, if that's possible. However this may also not be working in some cases, e.g. when the actual class is in another ClassLoader.

A rule of thumb is to avoid generic types. You can make UIState not Parcelable, and parcelize it manually in every case where you otherwise specify the actual T. E.g. you can transform UIState<SomeClass> to a custom SavedUiStateWithSomeClass : Parcelable.

If you need this logic in the base code (where UIState is defined), then you can try supplying additional functions to save and restore UIState<T>. E.g. this could be:

• saveState: (UIState<T>) -> ParcelableContainer
• restoreState: (ParcelableContainer) -> UIState<T>

Check out how it is done in Decompose.

[avidraghavMM]

Thanks for the quick reply I got it.