Today we’re going to learn how to implement an Interstitial ad on Android using Java.

First, we’ll implement in our build.gradle:
implementation 'com.google.android.gms:play-services-ads:23.0.0'
Then, we need to initialize the ads in our MainActivity:
MobileAds.initialize(
this,
new OnInitializationCompleteListener() {
@Override
public void onInitializationComplete(InitializationStatus initializationStatus) {}
});
And add in the manifest (below </application> ):
<meta-data
android:name="com.google.android.gms.ads.AD_MANAGER_APP"
android:value="true" />
And also inside :
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="TU_ID_APLICACION_ADMOB" />
Replace YOUR_ADMOB_APP_ID with your Admob APP ID.
Now let’s create our interstitial ad:
private InterstitialAd mInterstitialAd;
public void cargarAnuncioVideo() {
try {
AdRequest adRequest = new AdRequest.Builder().build();
InterstitialAd.load(this, "tu_id_anuncio_admob_video", adRequest,
new InterstitialAdLoadCallback() {
@Override
public void onAdLoaded(@NonNull InterstitialAd interstitialAd) {
// The mInterstitialAd reference will be null until
// an ad is loaded.
mInterstitialAd = interstitialAd;
Log.i("TAG", "onAdLoaded");
if (mInterstitialAd != null) {
mInterstitialAd.show((Activity) getApplicationContext());
} else {
Log.d("TAG", "The interstitial ad wasn't ready yet.");
}
mInterstitialAd.setFullScreenContentCallback(new FullScreenContentCallback() {
@Override
public void onAdClicked() {
// Called when a click is recorded for an ad.
Log.d("TAG", "Ad was clicked.");
}
@Override
public void onAdDismissedFullScreenContent() {
// Called when ad is dismissed.
//Anuncio cargado, puedes realizar la accion que quieras
// Set the ad reference to null so you don't show the ad a second time.
Log.d("TAG", "Ad dismissed fullscreen content.");
mInterstitialAd = null;
}
@Override
public void onAdFailedToShowFullScreenContent(AdError adError) {
// Called when ad fails to show.
Log.e("TAG", "Ad failed to show fullscreen content.");
mInterstitialAd = null;
}
@Override
public void onAdImpression() {
// Called when an impression is recorded for an ad.
Log.d("TAG", "Ad recorded an impression.");
}
@Override
public void onAdShowedFullScreenContent() {
}
});
}
@Override
public void onAdFailedToLoad(@NonNull LoadAdError loadAdError) {
// Handle the error
Log.d("anuncio", loadAdError.toString());
mInterstitialAd = null;
}
});
} catch (Exception e) {
Log.e("anuncio", "falla1");
}
}
In the part of public void onAdDismissedFullScreenContent() {
* You can specify the action you want to perform once the ad is loaded.
Here: «your_admob_interstitial_ad_id» you will indicate your rewarded ad id.
