How to create splash screen using kotlin in android studio?

Activitysplash.kt

package com.webianks.bluechat

import android.content.Intent
import android.support.v7.app.AppCompatActivity
import android.os.Handler
import android.os.Bundle

class ActivitySplash : AppCompatActivity() {
    private var mDelayHandler: Handler? = null
    private val SPLASH_DELAY: Long = 4000 //3 seconds

    internal val mRunnable: Runnable = Runnable {
        if (!isFinishing) {

            val intent = Intent(applicationContext, MainActivity::class.java)
            startActivity(intent)
            finish()
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash)
        //Initialize the Handler
        mDelayHandler = Handler()

        //Navigate with delay
        mDelayHandler!!.postDelayed(mRunnable, SPLASH_DELAY)

    }

    public override fun onDestroy() {

        if (mDelayHandler != null) {
            mDelayHandler!!.removeCallbacks(mRunnable)
        }

        super.onDestroy()
    }
}

activity_splash.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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=".ActivitySplash">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="201dp"
        android:layout_height="197dp"
        android:layout_marginStart="105dp"
        android:layout_marginTop="256dp"
        android:layout_marginEnd="105dp"
        android:layout_marginBottom="278dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@mipmap/ic_launcher_foreground" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="160dp"
        android:layout_height="99dp"
        android:layout_marginStart="125dp"
        android:layout_marginTop="480dp"
        android:layout_marginEnd="126dp"
        android:layout_marginBottom="152dp"
        android:text="CasStyles"
        android:textSize="36sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>

Activitysplash.kt

package com.webianks.bluechat

import android.content.Intent
import android.support.v7.app.AppCompatActivity
import android.os.Handler
import android.os.Bundle

class ActivitySplash : AppCompatActivity() {
    private var mDelayHandler: Handler? = null
    private val SPLASH_DELAY: Long = 4000 //3 seconds

    internal val mRunnable: Runnable = Runnable {
        if (!isFinishing) {

            val intent = Intent(applicationContext, MainActivity::class.java)
            startActivity(intent)
            finish()
        }
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash)
        //Initialize the Handler
        mDelayHandler = Handler()

        //Navigate with delay
        mDelayHandler!!.postDelayed(mRunnable, SPLASH_DELAY)

    }

    public override fun onDestroy() {

        if (mDelayHandler != null) {
            mDelayHandler!!.removeCallbacks(mRunnable)
        }

        super.onDestroy()
    }
}



activity_splash.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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=".ActivitySplash">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="201dp"
        android:layout_height="197dp"
        android:layout_marginStart="105dp"
        android:layout_marginTop="256dp"
        android:layout_marginEnd="105dp"
        android:layout_marginBottom="278dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@mipmap/ic_launcher_foreground" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="160dp"
        android:layout_height="99dp"
        android:layout_marginStart="125dp"
        android:layout_marginTop="480dp"
        android:layout_marginEnd="126dp"
        android:layout_marginBottom="152dp"
        android:text="CasStyles"
        android:textSize="36sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>