AdmobConstructor.kt

constructor(adView: AdView?, context: Context) {
    this.adView = adView
    this.context = context
    interstitialAd = InterstitialAd(context)
    interstitialAd.adUnitId = GameSettings.ADMOB_INTERSTITIAL_ID
    interstitialAd.adListener = object : AdListener() {
        override fun onAdClosed() {
            requestNewInterstitial()
            super.onAdClosed()
        }
    }
    requestNewInterstitial()
    handler = object : Handler() {
        override fun handleMessage(msg: Message) {
            when (msg.what) {
                HIDE -> {
                    adView?.visibility = View.GONE
                }
                SHOW -> {
                    adView?.visibility = View.VISIBLE
                }
            }
        }
    }
}
private fun requestNewInterstitial() {
    val adRequestBuilder = AdRequest.Builder()
    adRequestBuilder.addTestDevice(AdRequest.DEVICE_ID_EMULATOR)
    interstitialAd.loadAd(adRequestBuilder.build())
}