# Show Ads ## Showing a Fullscreen Ad The fullscreen APIs combine the existing Rewarded and Interstitial ad formats into a single integration experience. Once you receive the fullscreen ad from the ad load request, you are ready to show it at your convenience.

// Set the delegate before showing the ad
ad.delegate = self
ad.show(with: <view controller>) { result in
    if let error = result.error {
        // Handle the error
    } else {
        // The ad was shown
    }
}

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Delegate Usage
—--------------

func didRecordImpression(ad: FullscreenAd) {
    // Handle ad impression
}

func didClick(ad: FullscreenAd) {
    // Handle ad clicked
}

func didReward(ad: FullscreenAd) {
    // Handle ad reward
}

func didClose(ad: FullscreenAd, error: ChartboostMediationError?) {
    if let error = error {
        // Handle error
    } else {
        // Handle ad closed
    }
}

func didExpire(ad: FullscreenAd) {
    // Handle ad expired
}

// Set the delegate before showing the ad
ad.delegate = self;
[ad showWith:<view controller> completion:^(CBMAdShowResult *result) {
    if (result.error != nil) {
        // Handle the error
    } else {
        // The ad was shown
    }
}];

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Delegate Usage
—--------------

- (void)didRecordImpressionWithAd:(CBMFullscreenAd *)ad {
    // Handle ad impression
}

- (void)didClickWithAd:(CBMFullscreenAd *)ad {
    // Handle ad clicked
}

- (void)didRewardWithAd:(CBMFullscreenAd *)ad {
    // Handle ad reward
}

- (void)didCloseWithAd:(CBMFullscreenAd *)ad error:(CBMError *)error {
    if (error != nil) {
        // Handle error
    } else {
        // Handle ad closed
    }

}

- (void)didExpireWithAd:(CBMFullscreenAd *)ad {
    // Handle ad expired
}

## Showing Banner Ads When you’re ready to show a banner ad, you can check that it’s ready to show and then display it like so:

if let bannerAd = bannerAd {
    view.addSubview(bannerAd)
}

/// Banner ads are now automatically shown. All that you need to do
/// is add it to the view hierarchy.
[self.view addSubview:self.bannerAd];

If you enable auto-refresh for banner placement in the dashboard, then the Mediation SDK will apply that setting when the placement is shown. Any auto-refresh changes made on the dashboard will take approximately one hour to take effect and the SDK must be rebooted in order to pick up the changes once they're available. ## Releasing Mediation Ads To clear resources used by Mediation Ads, call `reset()` on a `BannerAdView` to clear the loaded ad and stop auto-refresh, or call `invalidate()` on a `FullscreenAd` to discard it from Chartboost Mediation's internal cache.

// Example of Releasing Banner Ads
if let bannerAd = bannerAd {
    bannerAd.removeFromSuperview()
    self.bannerAd = nil
    self.bannerConstraints = nil
}

// Example of Releasing Banner Ads
if (self.bannerAd) {
      [self.bannerAd removeFromSuperview];
      self.bannerAd = nil;
      self.bannerConstraints = nil;
}