implementation 'com.google.android.gms:play-services-ads:20.2.0' MobileAds.initialize(context, new OnInitializationCompleteListener() { @Override public void onInitializationComplete(InitializationStatus initializationStatus) { } }); <com.google.android.gms.ads.AdView xmlns:ads="http://schemas.android.com/apk/res-auto" android:id="@+id/adView" android:layout_width="wrap_content" android:layout_height="wrap_content" ads:adSize="BANNER" ads:adUnitId="your_ad_unit_id" /> AdView adView = findViewById(R.id.adView); AdRequest adRequest = new AdRequest.Builder().build(); adView.loadAd(adRequest); InterstitialAd interstitialAd; interstitialAd = new InterstitialAd(context); interstitialAd.setAdUnitId("your_ad_unit_id"); AdRequest adRequest = new AdRequest.Builder().build(); interstitialAd.loadAd(adRequest); if (interstitialAd.isLoaded()) { interstitialAd.show(); } interstitialAd.setAdListener(new AdListener() { @Override public void onAdLoaded() { } @Override public void onAdFailedToLoad(LoadAdError loadAdError) { } });