param(object) 付 遷移

class MainActivity : AppCompatActivity() {

companion object {

const val PERSON_EXTRA = "person"

}

private lateinit var binding: ActivityMainBinding

private val nextButtonListener = View.OnClickListener {

val person = Person("John Doe", 999, false)

val intent = Intent(this, SubActivity::class.java).apply {

putExtra(PERSON_EXTRA, person)

}

startActivity(intent)

}

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

binding = ActivityMainBinding.inflate(layoutInflater)

setContentView(binding.root)

binding.nextButton.setOnClickListener(nextButtonListener)

}

}

class SubActivity : AppCompatActivity() {

private lateinit var binding: ActivitySubBinding

override fun onCreate(savedInstanceState: Bundle?) {

super.onCreate(savedInstanceState)

binding = ActivitySubBinding.inflate(layoutInflater)

setContentView(binding.root)

val data = intent.getSerializableExtra(MainActivity.PERSON_EXTRA) ?: return

if (data is Person) {

binding.nameTextView.text = data.name

binding.ageTextView.text = data.age.toString()

binding.isMarriedTextView.text = if (data.isMarried) "married" else "un married"

}

}

}

data class Person(

val name: String,

val age: Int,

val isMarried: Boolean = false

) : Serializable {

override fun toString(): String =

"name: $name, age: $age, ${if (isMarried) "Married" else "Un married"}"

}