package com.mt.jiletsakasi

import android.media.MediaPlayer
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.view.View
import android.widget.ImageView
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {
internal var flag = 0

private lateinit var mediaPlayer: MediaPlayer
private val startAppAd = StartAppAd(this)
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)

poweroff.setOnClickListener(){

if (flag ==0) {
Log.v("Inside if", "Success" + "")
mediaPlayer= MediaPlayer.create(applicationContext,R.raw.haircut)
mediaPlayer.start()
poweroff.setImageResource(R.drawable.haircuton)
flag++

} else run {
Log.v("Inside else", "Success" + "")
mediaPlayer.stop()
poweroff.setImageResource(R.drawable.haircutoff)
mediaPlayer.release()
flag = 0

}
}
}

activity_main

<?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"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"

tools:context=".MainActivity" android:orientation="vertical">

<LinearLayout
android:layout_width="match_parent"

android:layout_gravity="center_horizontal"
android:layout_height="0dp"
android:gravity="center_horizontal" android:layout_weight="1" android:orientation="vertical">
<ImageView
android:id="@+id/poweroff"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
android:src="@drawable/haircutoff"/>
</LinearLayout>

</LinearLayout>

AndroidManifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.mt.jiletsakasi">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<application
android:allowBackup="true"
android:icon="@drawable/logo"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

</application>

</manifest>