How to Create Custom Dialog Android?

 <?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">


    <Button
        android:id="@+id/dialogBtn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show Dialog"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

 </androidx.constraintlayout.widget.ConstraintLayout>

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:padding="10dp">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_centerHorizontal="true"
        android:src="@drawable/baseline_delete" />

    <TextView
        android:id="@+id/textview"
        android:layout_width="392dp"
        android:layout_height="50dp"
        android:layout_below="@id/imageView"
        android:layout_marginTop="10dp"
        android:padding="10dp"
        android:text="Are you sure want to logout"
        android:textAlignment="center"
        android:textSize="20sp"
        android:textStyle="bold" />

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/textview"
        android:layout_centerHorizontal="true"
        android:layout_margin="15dp">

        <TextView
            android:id="@+id/okay_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginRight="100dp"
            android:text="Yes"
            android:textSize="20sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/cancel_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="30dp"
            android:layout_marginLeft="100dp"
            android:layout_toRightOf="@id/okay_text"
            android:text="No"
            android:textSize="20sp"
            android:textStyle="bold" />

     </RelativeLayout>

 </RelativeLayout>

 import android.app.Dialog
 import android.os.Bundle
 import android.view.ViewGroup
 import android.widget.Button
 import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity


 class MainActivity : AppCompatActivity() {
 
     var mDialogButton: Button? = null
     var okay_text: TextView? = null
     var cancel_text: TextView? = null
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
         mDialogButton = findViewById(R.id.dialogBtn)
         val dialog = Dialog(this@MainActivity)

        mDialogButton?.setOnClickListener {
            dialog.setContentView(R.layout.dialog_layout)
            dialog.window!!.setLayout(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT
            )
            dialog.setCancelable(false)

            okay_text = dialog.findViewById(R.id.okay_text)
            cancel_text = dialog.findViewById(R.id.cancel_text)

            okay_text?.setOnClickListener {
                dialog.dismiss()
                Toast.makeText(this@MainActivity, "Yes clicked", Toast.LENGTH_SHORT).show()
            }

            cancel_text?.setOnClickListener {
                dialog.dismiss()
                Toast.makeText(this@MainActivity, "No clicked", Toast.LENGTH_SHORT).show()
            }
            dialog.show()
         }
 
     }
 }