How to make Splash in Kotlin

<?xml version="1.0" encoding="utf-8"?>
<!-- All the colors used in the application -->
<resources>
    <color name="colorPrimary">#008577</color>
    <color name="colorPrimaryDark">#00574B</color>
    <color name="colorAccent">#D81B60</color>
    <color name="grey">#d3d3d3</color>
    <color name="white">#ffffff</color>
    <color name="black">#000000</color>
</resources>

Enter the activity_splash.xml section and change its codes as below.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/grey">
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="250dp"
        android:src="@drawable/ic_launcher_background"
        app:srcCompat="@android:drawable/sym_def_app_icon" />
    <TextView
        android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Name of the Application"
        android:textSize="20dp"
        android:textStyle="bold"
        android:gravity="center"
        android:textColor="@color/black"
        android:layout_below="@id/imageView"
        android:padding="30dp"/>
    <ProgressBar
        android:id="@+id/progressBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/textView"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="20dp"
        android:indeterminateTint="@color/black"/>
    <TextView
        android:id="@+id/textView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/progressBar"
        android:gravity="center"
        android:layout_marginTop="200dp"
        android:padding="15dp"
        android:text="Designed by Your Name Here"
        android:textColor="@color/black"
        android:textSize="15dp"
        android:textStyle="bold"
        android:textAlignment="center"/>
</LinearLayout>

Now it’s time to remove the actionbar related to your home screen, for this, enter the following path
app → res → values → styles.xml
and define the following style.

<style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
    </style>

import android.content.Intent
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.os.Handler
class SplashActivity : AppCompatActivity() {
    // This is the loading time of the splash screen
    private val SPLASH_TIME_OUT:Long = 3000 // 3 sec
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_splash)
        Handler().postDelayed({
            startActivity(Intent(this,MainActivity::class.java))
            // close this activity
            finish()
        }, SPLASH_TIME_OUT)
    }
}

What happened above is that a 3-second time delay was created by using the postdelay method of the handler. Pay attention, you must set the time based on milliseconds, that is, every 1000 seconds will be equal to 1 second. Above, delay is equal to 3 definitions. and finally, after 3 seconds, it takes us to the main activity.
Now enter AndroidManifest.xml. Find MainActivity and cut the following lines

<intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>

<activity android:name=".SplashActivity"
    android:theme="@style/AppTheme.NoActionBar">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>