# Implement interstitial ads in Android

> Implement interstitial ads in your Android app. Load ad content, display it through Java code, and use a listener to manage ad events.

## Interstitial ad load example

Use `LoadConfiguration.Builder` to construct a load request with the placement ID and mediation metadata, optionally including ad markup for bidding. Pass the built configuration to `InterstitialAd.load()` along with a `LoadListener`. The `onAdLoaded` callback receives the loaded `InterstitialAd` instance on success, or a `UnityAdsError` on failure. Retain the ad instance, as it's required to show the ad later.

1. **Java**

   ```java
    InterstitialAd.load(loadConfig, (interstitialAd, error) -> {
   if (interstitialAd != null) {
       // Ad loaded successfully, ready to be shown
       this.interstitialAd = interstitialAd;
     } else {
         // Handle load error
     }
   }); 
   ```

2. **Kotlin**

   ```kotlin
    InterstitialAd.load(loadConfig, { interstitialAd, error ->
   if (interstitialAd != null) {
       // Ad loaded successfully, ready to be shown
       this.interstitialAd = interstitialAd
     } else {
         // Handle load error
     }
   })
   ```

## Interstitial ad show example

Call `show()` on the retained `InterstitialAd` instance, passing the activity, a `ShowConfiguration`, and an `InterstitialShowListener`. The listener provides callbacks for each stage of the ad's lifecycle: `onStarted` when the ad displays, `onClicked` when the user interacts with it, `onCompleted` when it closes, and `onFailed` if an error occurs — with the error details available via the `UnityAdsError` argument.

1. **Java**

   ```java
     loadedInterstitialAd.show(activity, new ShowConfiguration.Builder().build(), new InterstitialShowListener()
     {
        @Override
        public void onStarted(@NonNull InterstitialAd ad)   
        { /* displayed */ }

        @Override
        public void onClicked(@NonNull InterstitialAd ad)   
        { /* clicked */ }

        @Override
        public void onCompleted(@NonNull InterstitialAd ad, @NonNull ShowFinishState state) 
        { /* hidden */ }

        @Override
        public void onFailed(@NonNull InterstitialAd ad, @NonNull UnityAdsError error)      
        { /* failed */ }
     } );

   ```

2. **Kotlin**

   ```kotlin
   loadedInterstitialAd.show(activity, ShowConfiguration.Builder().build(), object : InterstitialShowListener 
   {
     override fun onStarted(ad: InterstitialAd)                            
        { /* displayed */ }
     override fun onClicked(ad: InterstitialAd)                            
        { /* clicked */ }
     override fun onCompleted(ad: InterstitialAd, state: ShowFinishState)  
        { /* hidden */ }
     override fun onFailed(ad: InterstitialAd, error: UnityAdsError)       
        { /* failed */ }
   })
   ```

**Next steps**: To improve your implementation, refer to the [Implement rewarded ads in Android](/ads-android/4.19.0/sdk-integration/rewarded-ads.md) documentation.