Resolved Serializing a collection of ISerializationCallbackReceivers

I have a class that implements ISerializationCallbackReceiver. When I serialize an instance of it, it works as expected. But when I try to serialize/deserialize a List of this class neither OnBeforeSerialization, nor
OnAfterDeserialize are called for any instance in the List. Is it intended behaviour or is it a bug?

 

How are you serialising and deserialising this collection?

Note that the interface only means anything in the context of Unity. Other serialisers know nothing about this interface.

I've had instances where I manually call the methods of

ISerializationCallbackReceiver

to ensure the data has been converted to a Unity friendly form and back again in such cases.

 

You really should show how your class looks like. I assume it's a plain Serializable data class? Not a MonoBehaviour or ScriptableObject? Because those are serialized on their own and a list of such instances would only serialize the reference to those objects which in most cases doesn't make sense except inside the Unity editor.

If your class is too big or is somehow "classified" so you can not show it here, can you make a small reproduction case? Though keep in mind that the base class can play an important role.

Also note that when you use Unity's JsonUtility for serialization, it does not support arrays as root objects. It always requires an object as root element that is actually serialized.

 

You actually solved my problem. Indeed I was trying to use JsonUtility to directly serialize a List of objects, even though it was stated in the documentation (which I didn't check at the time) that it doesn't work. I was too used to working with newtonsoft, and just for some reason assumed that unity worked the same way.
Thank you!