Integrate and use admob ads in an Android project using Kotlin

Add Admob interstitial using Kotlin Language

Google officialy support Now the Koltlin language , and almost of devloppers will migrate to this new born programming language , to build new android apps using kotlin or update their old apps.
in this short tutorial you will learn how to add admob interstital using Kotlin language , lets start to see how we can Integrate and use admob ads in an Android project using Kotlin.




The following steps are required to show interstitial ads

1: Import Google Mobile Ads Packages

import com.google.android.gms.ads.AdListener
import com.google.android.gms.ads.AdRequest
import com.google.android.gms.ads.InterstitialAd
import com.google.android.gms.ads.MobileAds

2: Initialize admob vars

internal lateinit var mInterstitialAd: InterstitialAd
internal lateinit var adRequest : AdRequest

Initialize The App ID 

MobileAds.initialize(this, "YOUR APP ID");

3: Starting ad request

mInterstitialAd =  InterstitialAd(this);
mInterstitialAd.adUnitId = " YOUR INTERSTITIAL ID";

 adRequest =  AdRequest.Builder()

        .build();

mInterstitialAd.loadAd(adRequest);

mInterstitialAd.adListener = object : AdListener() {


    @Override    public  override fun onAdLoaded() {
        requestNewInterstitial()
    }
};

4: Creating the request function Inside the MainActivty kotlin class

fun requestNewInterstitial() {
    if (mInterstitialAd.isLoaded) {
        mInterstitialAd.show();
    }
}

•  MainActivity Kotlin class

package com.example.admobkotlin

import com.google.android.gms.ads.AdListener
import com.google.android.gms.ads.AdRequest
import com.google.android.gms.ads.InterstitialAd
import com.google.android.gms.ads.MobileAds

class MainActivity: BaseActivity() {

// Initialize Admob vars

internal lateinit var mInterstitialAd: InterstitialAd
internal lateinit var adRequest : AdRequest

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
// initialize your app ID
MobileAds.initialize(this, "YOUR APP ID");
// STARTING AD REQUEST
mInterstitialAd =  InterstitialAd(this);
mInterstitialAd.adUnitId = " YOUR INTERSTITIAL ID";
adRequest =  AdRequest.Builder().build();
mInterstitialAd.loadAd(adRequest);
mInterstitialAd.adListener = object : AdListener() {


    @Override    public  override fun onAdLoaded() {
        requestNewInterstitial()
    }
};
}
// Creating the Function that load the interstitial
fun requestNewInterstitial() {
    if (mInterstitialAd.isLoaded) {
        mInterstitialAd.show();
    }
}

}

You can download the following source code for an mp3 player written with Kotlin Language  Kotlin app source code