# Interstitial

## Integration

 Below we show a simple example to understand how interstitial ads work:

```dart
import 'package:wortise/interstitial_ad.dart';

InterstitialAd _interstitialAd;

// Create an interstitial
_interstitialAd = InterstitialAd('Wortise Ad Unit ID', listener: (event, args) {
  // This listener will be invoked when an event happens
});

// Request an ad
await _interstitialAd.loadAd();

/* ... */

// Show the ad if available
if (await _interstitialAd.isAvailable) {
  await _interstitialAd.showAd();
}
```

The `InterstitialAd` class constructor admits a third parameter, called `reloadOnDismissed`, that when it is set to `true` (the default value is `false`) allows the interstitial to automatically load a new ad when the current one is dismissed.

## **Listener events**

The assigned listener to an `InterstitialAd` can receive the following events:

```dart
// The ad has been clicked
InterstitialAdEvent.CLICKED
// The ad has been dismissed
InterstitialAdEvent.DISMISSED
// The ad could not be loaded
InterstitialAdEvent.FAILED_TO_LOAD
// The ad could not be shown
InterstitialAdEvent.FAILED_TO_SHOW
// The ad has generated an impression
InterstitialAdEvent.IMPRESSION
// The ad has been loaded
InterstitialAdEvent.LOADED
// The ad has generated revenue
InterstitialAdEvent.REVENUE_PAID
// The ad has been shown
InterstitialAdEvent.SHOWN
```