Cannot serialize the list item?

Questions & Answers
1

I want to pass the list of object in photon.RPC method i.e

List<GameObject> mycards;
List<GameObject> opponentCard;
PhotonView photonView;
void start()
{
 //Added some object to both the list;
 photonView.RPC("MyMehthod",PhotonTarget.AllBufferedTarget,mycards,opponentCard);
}

[PunRPC]
void MyMethod(List<GameObject> a,List<GameObject> b)
{
  // Doing some work here
}

**Please give me any solution possible to do this or if not the list of object how should i pass the singel object?**

This is the Detail Error:
Exception: cannot serialize(): System.Collections.Generic.List1[UnityEngine.GameObject] ExitGames.Client.Photon.Protocol.Serialize (System.IO.MemoryStream dout, System.Object serObject, Boolean setType) ExitGames.Client.Photon.Protocol.SerializeObjectArray (System.IO.MemoryStream dout, System.Object[] objects, Boolean setType) ExitGames.Client.Photon.Protocol.Serialize (System.IO.MemoryStream dout, System.Object serObject, Boolean setType) ExitGames.Client.Photon.Protocol.SerializeHashTable (System.IO.MemoryStream dout, ExitGames.Client.Photon.Hashtable serObject, Boolean setType) ExitGames.Client.Photon.Protocol.Serialize (System.IO.MemoryStream dout, System.Object serObject, Boolean setType) ExitGames.Client.Photon.Protocol.SerializeParameterTable (System.IO.MemoryStream memStream, System.Collections.Generic.Dictionary2 parameters)
ExitGames.Client.Photon.Protocol.SerializeOperationRequest (System.IO.MemoryStream memStream, Byte operationCode, System.Collections.Generic.Dictionary2 parameters, Boolean setType) ExitGames.Client.Photon.EnetPeer.SerializeOperationToMessage (Byte opc, System.Collections.Generic.Dictionary2 parameters, EgMessageType messageType, Boolean encrypt)
ExitGames.Client.Photon.EnetPeer.EnqueueOperation (System.Collections.Generic.Dictionary2 parameters, Byte opCode, Boolean sendReliable, Byte channelId, Boolean encrypt, EgMessageType messageType) ExitGames.Client.Photon.PeerBase.EnqueueOperation (System.Collections.Generic.Dictionary2 parameters, Byte opCode, Boolean sendReliable, Byte channelId, Boolean encrypted)
ExitGames.Client.Photon.PhotonPeer.OpCustom (Byte customOpCode, System.Collections.Generic.Dictionary`2 customOpParameters, Boolean sendReliable, Byte channelId, Boolean encrypt)
ExitGames.Client.Photon.LoadbalancingPeer.OpRaiseEvent (Byte eventCode, System.Object customEventContent, Boolean sendReliable, .RaiseEventOptions raiseEventOptions) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/LoadbalancingPeer.cs:524)
NetworkingPeer.OpRaiseEvent (Byte eventCode, System.Object customEventContent, Boolean sendReliable, .RaiseEventOptions raiseEventOptions) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/NetworkingPeer.cs:1071)
NetworkingPeer.RPC (.PhotonView view, System.String methodName, PhotonTargets target, Boolean encrypt, System.Object parameters) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/NetworkingPeer.cs:3063)
PhotonNetwork.RPC (.PhotonView view, System.String methodName, PhotonTargets target, Boolean encrypt, System.Object parameters) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/PhotonNetwork.cs:2661)
PhotonView.RpcSecure (System.String methodName, PhotonTargets target, Boolean encrypt, System.Object parameters) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/PhotonView.cs:608)
PhotonView.RPC (System.String methodName, PhotonTargets target, System.Object parameters) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/PhotonView.cs:582)
GameController.InitializeCardAndGiveToAllPlayers () (at Assets/Scripts/MultiPlayerGamePlay/GameController.cs:145)
Connection.OnJoinedRoom () (at Assets/Scripts/MultiPlayerGamePlay/Connection.cs:39)
UnityEngine.GameObject:SendMessage(String, Object, SendMessageOptions)
NetworkingPeer:SendMonoMessage(PhotonNetworkingMessage, Object) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/NetworkingPeer.cs:2049)
NetworkingPeer:OnEvent(EventData) (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/NetworkingPeer.cs:1873)
ExitGames.Client.Photon.PeerBase:DeserializeMessageAndCallback(Byte)
ExitGames.Client.Photon.EnetPeer:DispatchIncomingCommands()
ExitGames.Client.Photon.PhotonPeer:DispatchIncomingCommands()
PhotonHandler:Update() (at Assets/Photon Unity Networking/Plugins/PhotonNetwork/PhotonHandler.cs:83)

2

Photon cannot pass gameObjects through RPC calls, you’ll have to identify the player’s cards through simpler means. Possibly identify them using integers, or strings of information?

You could also create a custom class with custom Serialize and Deserialize methods that can be sent through Photon. You can find more information about making custom classes here: Photon의 직렬화(Serialization) | Photon Engine

3

You can also try this. Serialize custom object and send that serialization data (string/byte format) to other Photon clients. On receiving this serialization data, other clients can deserialize it and retrieve back original object. However, there is some limit on message size while sending over photon network. So its better to share lightweight data only.

For serializing you can choose c# Binary formatter or else third party plugin from asset store. I would also recommend you to check out our plugin Runtime Serialization for Unity which can serialize c# objects as well as Unity objects like GameObjects, Transform, MonoBehaviours etc. For complete list of supported types, please check this 2.