Broadcast Receiver in kotlin

you can do it in the following way

Create a broadcast receiver object in your activity class

val broadCastReceiver = object : BroadcastReceiver() {
    override fun onReceive(contxt: Context?, intent: Intent?) {   
        when (intent?.action) {
           BROADCAST_DEFAULT_ALBUM_CHANGED -> handleAlbumChanged()
           BROADCAST_CHANGE_TYPE_CHANGED -> handleChangeTypeChanged()
        }
    }
}

Register broadcast receiver in onCreate() function of your activity

 LocalBroadcastManager.getInstance(this)
                    .registerReceiver(broadCastReceiver, IntentFilter(BROADCAST_DEFAULT_ALBUM_CHANGED))

unregister it in ondestroy function of your activity

LocalBroadcastManager.getInstance(this)
                .unregisterReceiver(broadCastReceiver)