Dice Roller application that has a button to roll a dice and update the image on the screen

7.  Create a Dice Roller application that has a button to roll a dice and update the image on the screen.

activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/dice_1" />

    <Button
        android:id="@+id/b1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="ROLL"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/iv" />

</androidx.constraintlayout.widget.ConstraintLayout>


MainActivity.kt
package com.example.roll_dice

//import android.annotation.SuppressLint
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.ImageView

class MainActivity : AppCompatActivity() {
   // @SuppressLint("MissingInflatedId")
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
       val btn:Button=findViewById(R.id.b1)

        btn.setOnClickListener {
            rollDice()
        }
    }
    private fun rollDice(){
        val dice=Dice(6)
        val diceRoll=dice.roll()
        val imgv:ImageView=findViewById(R.id.iv)
        val drawableResource=when(diceRoll){
            1->R.drawable.dice_1
            2->R.drawable.dice_2
            3->R.drawable.dice_3
            4->R.drawable.dice_4
            5->R.drawable.dice_5
            else->R.drawable.dice_6
        }
        imgv.setImageResource(drawableResource)
    }
}
class Dice(private val numSides:Int){
    fun roll():Int{
        return (1..numSides).random()
    }
}