设置会话消息接收方式

OpenIMClient.getInstance().conversationManager.setConversationRecvMessageOpt(
    new OnBase<String>() {
        @Override
        public void onSuccess(String data) {
            markReceiveOptionSubmitted(conversationID);
        }

        @Override
        public void onError(int code, String error) {
            recordReceiveOptionFailure(code, error);
        }
    },
    conversationID,
    2
);