+ --------------------------------------------------------------+         
|   this code is for image colors.png                           |
|                                                               |
+ --------------------------------------------------------------+ 

--------------------------------------------
activity_main.xml
---------------------------------------------

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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="#070707"
    android:backgroundTint="#0B0A0A"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="RED"
        android:background="#d90429"
        tools:layout_editor_absoluteX="1dp"
        tools:layout_editor_absoluteY="-2dp" />

    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:text="orange"
        android:background="#ff5400"
        tools:layout_editor_absoluteX="162dp"
        tools:layout_editor_absoluteY="-3dp" />

    <Button
        android:id="@+id/button3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignEnd="@id/button"
        android:layout_marginEnd="-325dp"
        android:layout_marginRight="-47dp"
        android:text="yellow"
        android:background="#ffd500"
        tools:layout_editor_absoluteX="323dp"
        tools:layout_editor_absoluteY="-2dp" />

    <Button
        android:id="@+id/button4"
        android:layout_width="61dp"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginVertical="100dp"
        android:layout_marginTop="3000dp"
        android:text="blue"
        android:background="#00b4d8"
        tools:layout_editor_absoluteX="74dp"
        tools:layout_editor_absoluteY="97dp" />


    <Button
        android:id="@+id/button5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginHorizontal="60dp"
        android:layout_marginVertical="100dp"
        android:layout_marginTop="3000dp"
        android:layout_marginRight="450dp"
        android:text="Green"
        android:background="#ccff33"
        tools:layout_editor_absoluteX="171dp"
        tools:layout_editor_absoluteY="97dp" />

    <Button
        android:id="@+id/button6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginVertical="100dp"
        android:layout_marginLeft="270dp"
        android:text="indigo"
        android:background="#7b2cbf"
        tools:layout_editor_absoluteX="276dp"
        tools:layout_editor_absoluteY="97dp" />

    <Button
        android:id="@+id/button7"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@id/button5"
        android:background="#ff0a54"
        android:layout_alignParentBottom="true"
        android:text="pink" />


</RelativeLayout>


--------------------------------------------
MainActivity.kt
---------------------------------------------

import android.app.Activity
import android.os.Bundle
import android.view.View
import android.widget.Button
import android.widget.Toast

class MainActivity : Activity() {

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

        val buttons = listOf(
            R.id.button to "RED",
            R.id.button2 to "ORANGE",
            R.id.button3 to "YELLOW",
            R.id.button4 to "BLUE",
            R.id.button5 to "GREEN",
            R.id.button6 to "INDIGO",
            R.id.button7 to "PINK"
        )

        for ((id, colorName) in buttons) {
            findViewById<Button>(id).setOnClickListener {
                Toast.makeText(this, "You clicked: $colorName", Toast.LENGTH_SHORT).show()
            }
        }
    }
}