android kotlin - Full screen AlertDialog example

MainActivity.kt

package com.cfsuman.kotlintutorials

import android.app.Activity
import android.app.AlertDialog
import android.os.Bundle
import android.widget.*


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

        val context:MainActivity = this

        // get the widgets reference from XML layout
        val button = findViewById<Button>(R.id.button)


        // create a builder for an alert dialog with theme resource
        button.setOnClickListener {
            val builder = AlertDialog.Builder(
                context,
                android.R.style.Theme_Material_Light_NoActionBar_Fullscreen
            )

            builder.setTitle("Full Screen Dialog Title")
            builder.setMessage("\n\nThis is an example message." +
                    "\n\n\n\n\n\n\n\n\n\n\n\n\n\nSecond Text." +
                    "\n\n\n\n\n\n\n\n\nThird Text." +
                    "\n\n\n\n\n\n\n\n\n\n\n\n\n\nFourth Text.")

            builder.setPositiveButton("Yes"){ dialog,which->
                // do something on positive button click
            }

            builder.setNegativeButton("No"){dialog,which->
                // do something when negative button clicked
            }

            builder.setNeutralButton("Cancel"){dialog,which->
                // do something on neutral button click
            }

            val dialog = builder.create()
            dialog.show()
        }
    }
}

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"
    android:background="#DCDCDC"
    android:padding="24dp">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show Full Screen Alert Dialog"
        android:textAllCaps="false"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

build.gradle dependencies[add]

// Material components
implementation 'com.google.android.material:material:1.6.1'