title: iOS: full page interstitial ad shows black screen after close
body: <p>I show a full screen advertisement with this code, which works showing a full page advertisement.  The problem is that when I close the advertisement I just have a blank screen.  It does not show my app anymore.</p>
  
  <p>My code:</p>
  
  <pre><code>-(void)showFullScreenAd {
      if (requestingAd == NO) {
          interstitial = [[ADInterstitialAd alloc] init];
          interstitial.delegate = self;
          self.interstitialPresentationPolicy = ADInterstitialPresentationPolicyManual;
          [self requestInterstitialAdPresentation];
          NSLog(@"interstitialAdREQUEST");
          requestingAd = YES;
      }
  }
  </code></pre>