groovy implementation 'com.google.android.gms:play-services-ads:20.4.0' <com.google.android.gms.ads.AdView 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);