Registering and un-registering in dynamic recievers

CustomDynamicBroadcastReceiver.kt

package com.droid.code.demos.dynamic_receiver.reciever

import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.net.ConnectivityManager
import android.widget.Toast

const val KEY_AIRPLANE_MODE = "state"

class CustomDynamicBroadcastReceiver : BroadcastReceiver() {

    override fun onReceive(context: Context?, intent: Intent) {
        val isTheAirplaneModeEnabled = intent?.getBooleanExtra(KEY_AIRPLANE_MODE,false) ?: return
        if (isTheAirplaneModeEnabled) {
            Toast.makeText(context, "Airplane mode enabled", Toast.LENGTH_SHORT).show()
        }else{
            Toast.makeText(context, "Airplane mode disabled", Toast.LENGTH_SHORT).show()
        }
    }
}

DynamicReceiverActivity.kt

package com.droid.code.demos.dynamic_receiver

import android.content.Intent
import android.content.IntentFilter
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import com.droid.code.databinding.ActivityDynamicRecieverBinding
import com.droid.code.demos.dynamic_receiver.reciever.CustomDynamicBroadcastReceiver

class DynamicReceiverActivity : AppCompatActivity() {

    private lateinit var binding: ActivityDynamicRecieverBinding

    lateinit var receiver : CustomDynamicBroadcastReceiver

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityDynamicRecieverBinding.inflate(layoutInflater)
        setContentView(binding.root)
        registerReceiver()
    }

    override fun onDestroy() {
        super.onDestroy()
        unRegisterReceiver()
    }


    private fun registerReceiver() {
        receiver = CustomDynamicBroadcastReceiver()
        IntentFilter(Intent.ACTION_AIRPLANE_MODE_CHANGED).also { registerReceiver(receiver,it) }
    }

    private fun unRegisterReceiver() {
        unregisterReceiver(receiver)
    }

}