How To Make Realmlist Parcelable?

@Parcelize open class TestClass( @SerialName('title') var title: String, @SerialName('list') var list: RealmList ) : RealmOb

Solution 1:

Similarly to this approach, you can do

fun Parcel.readStringRealmList(): RealmList<String>? = when {
    readInt() > 0 -> RealmList<String>().also { list ->
        repeat(readInt()) {
            list.add(readString())
        }
    }
    else -> null
}

fun Parcel.writeStringRealmList(realmList: RealmList<String>?) {
    writeInt(when {
        realmList == null -> 0else -> 1
    })
    if (realmList != null) {
        writeInt(realmList.size)
        for (t in realmList) {
            writeString(t)
        }
    }
}

Then you can do

object StringRealmListParceler: Parceler<RealmList<String>?>  {
    overridefuncreate(parcel: Parcel): RealmList<String>? = parcel.readStringRealmList()

    overridefun RealmList<String>?.write(parcel: Parcel, flags: Int) {
        parcel.writeStringRealmList(this)
    }
}

Now you can do

@Parcelize 
open class TestClass(
        @SerialName("title")   
        var title: String = "",
        @SerialName("list")   
        var list: @WriteWith<StringRealmListParceler> RealmList<String>? = null
) : RealmObject(), Parcelable { ... }