I’m getting a PROPERTY_WONT_BE_SERIALIZED warning ...

# announcements

[jamieadkins95]

I’m getting a PROPERTY_WONT_BE_SERIALIZED warning when using the new Parcelize annotation.

@Parcelize
class ExampleClass : Parcelable {

    var id: Long? = 0
    var name: String? = null
    var tagName: String? = null
    var enabled: Boolean = false

Do my properties have to be constructor parameters?

[leosan]

yes, they do

[leosan]

I'm using right now as this

@Parcelize
class Recipe(
        var id: String = "",
        val name: String = "",
        val cookTime: String = "",
        val serves: Long = -1L,
        val thumbnailUrl: String = "",
        val skillLevel: String = ""
) : Parcelable

[leosan]

can also be a data class instead

[jamieadkins95]

@leosan Cool thanks, now the compiler is complaining that “This class implements parcelable but does not provide a CREATOR class”

[leosan]

Yeah I'm having the same, just ignore it. It still works

[leosan]

Probably because Android Studio don't know about @Parcelize so it show that warning that you must implement the Parcelable

[jamieadkins95]

I’m getting a run time crash

java.lang.NoClassDefFoundError: Failed resolution of: com/example/example/data/config/ExampleClass$Creator

[jamieadkins95]

Ahh, you can’t have a companion object already defined in a @Parcelize class

[kingsley]

You should update your Android studio plugin if you haven’t done so.
Also, if this is a class that will be unserialized from json for example, instead of using unnecessary defaults, you could consider the no-args plugin

[leosan]

@kingsley My Kotlin AS Plugin is up to date but I never heard of this no-arg plugin I will take a look, I'm essentially using this because firebase fails without a default value

[kingsley]

Yea. You should check it out. https://kotlinlang.org/docs/reference/compiler-plugins.html#no-arg-compiler-plugin

[leosan]

just implemented 😮 worked like a charm, thanks for tip, code looking a lot cleaner now

[kingsley]

You’re welcome 🙂