MainActivity.kt

package com.example.myapplication

import android.content.Intent
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import kotlinx.android.synthetic.main.activity_main.*
import java.io.Serializable

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        btn_move.setOnClickListener {
            startActivity(Intent(this, MainActivity::class.java).putExtra("user", User()))
        }
    }

    override fun onSaveInstanceState(outState: Bundle?) {
        super.onSaveInstanceState(outState)
        outState?.putSerializable("user", User())
    }
}

class User: Serializable {
    val _name = Name("wilson", Name.NameType.A)

    val nameType by lazy {
        _name.nameType
    }
}


class Name(val text:String, val nameType:NameType): Serializable {
    enum class NameType {
        A,B
    }
}