Parcelize annotation in AIDL: Incompatible types: Object cannot be converted to MyCustomObject

Question

I'm rewriting my model class to Kotlin, which has to be Parcelable and used in AIDL:

@Parcelize
data class MyCustomObject(val value1: String, val value2: String) : Parcelable

During compilation it crashes with error:

error: incompatible types: Object cannot be converted to MyCustomObject

and points to this line in generated code:

if ((0!=_reply.readInt())) {
    _result = com.mypackagename.MyCustomObject.CREATOR.createFromParcel(_reply);
}

I used this annotation for other purposes and it was ok, only in AIDL I found mismatch so far.

Any ideas what's wrong?

EDIT: After 5 days with no single comment I've created a ticket for this issue.

Also do you have MyCustomObject.aidl (the one that describes your data class?) — Ivan Milisavljevic, Jun 14 '18 at 18:16
@IvanMilisavljevic, yes, it did. I have that object.aidl too. — Yurets, Jun 14 '18 at 19:03
sorry i'm still in java, my best guess there is something wrong with the parcelable generator and Kotlin data classes. One stupid suggestion did you try to clean and rebuild the project? — Ivan Milisavljevic, Jun 14 '18 at 19:32
@IvanMilisavljevic, yeah, tried all in this manner. The problem is in annotation itself. Boilerplate parcelable in kotlin also works fine. — Yurets, Jun 14 '18 at 20:02
i see you have no responses to the ticket as well, can you please setup a simple example project for me to take a look? — Ivan Milisavljevic, Jun 14 '18 at 20:08
@IvanMilisavljevic, in my profile there is a link to github. There is an old project InterProcessCommunication. You may add kotlin support for it and play with it if you like. — Yurets, Jun 15 '18 at 15:25
Let us [continue this discussion in chat](https://chat.stackoverflow.com/rooms/173230/discussion-between-yurets-and-ivan-milisavljevic). — Yurets, Jun 15 '18 at 15:35

Yurets · Accepted Answer · 2021-09-02T01:11:26.710

5

It is a bug in Kotlin, so I redirected this issue to JetBrains. You may track it here: KT-25807.

This happens, because createFromParcel() does not return class T, but Object.

UPD

Parcelize annotation is now maintainable by Google and the issue has been fixed in kotlin version 1.5.+ https://issuetracker.google.com/issues/110131003

edited Sep 02 '21 at 01:11

answered Jul 30 '18 at 11:55

Yurets

Any solution for aids with parcelized used in AIDL? Having same problem – Lê Khánh Vinh Oct 26 '19 at 07:23
Boilerplate implementation of Parcelable. This bug has no resolution so far even though priority was set 'high'... – Yurets Oct 26 '19 at 21:13

1 Answers1