Android MVC

Greeting.kt

class Person(var firstName: String, var lastName: String) //model

class MainActivity : AppCompatActivity() { //view + controller
    private var model: Person = Person("Adrian", "Catalan")
  
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
      
        btnShowGreet.setOnClickListener {
            txtGreet.text = 
 					   "Hello ${model.firstName} ${model.lastName}"
        }
    }
}