To use Parcelable, I had followed this release of Kotlin 1.1.4 : https://blog.jetbrains.com/kotlin/2017/08/kotlin-1-1-4-is-out/
Add this line in project
You can safely just ignore the warning as it's only lint check. for now to get rid of it just use @SuppressLint("ParcelCreator")
@SuppressLint("ParcelCreator")
ex:
@SuppressLint("ParcelCreator") @Parcelize class User(val firstName: String, val lastName: String) : Parcelable