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#import "ExampleViewController.h"
#import <AppLovinSDK/AppLovinSDK.h>

@interface ExampleViewController()<MAAdDelegate>
@property (nonatomic, strong) MAInterstitialAd *interstitialAd;
@property (nonatomic, assign) NSInteger retryAttempt;
@end

@implementation ExampleViewController

- (void)createInterstitialAd
{
  self.interstitialAd = [[MAInterstitialAd alloc] initWithAdUnitIdentifier: @"«ad-unit-ID»"];
  self.interstitialAd.delegate = self;

  // Load the first ad
  [self.interstitialAd loadAd];
}

#pragma mark - MAAdDelegate Protocol

- (void)didLoadAd:(MAAd *)ad
{
  // Interstitial ad is ready to be shown. '[self.interstitialAd isReady]' will now return 'YES'

  // Reset retry attempt
  self.retryAttempt = 0;
}

- (void)didFailToLoadAdForAdUnitIdentifier:(NSString *)adUnitIdentifier withError:(MAError *)error
{
  // Interstitial ad failed to load
  // AppLovin recommends that you retry with exponentially higher delays up to a maximum delay (in this case 64 seconds)

  self.retryAttempt++;
  NSInteger delaySec = pow(2, MIN(6, self.retryAttempt));

  dispatch_after(dispatch_time(DISPATCH_TIME_NOW, delaySec * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
    [self.interstitialAd loadAd];
  });
}

- (void)didDisplayAd:(MAAd *)ad {}

- (void)didClickAd:(MAAd *)ad {}

- (void)didHideAd:(MAAd *)ad
{
  // Interstitial ad is hidden. Pre-load the next ad
  [self.interstitialAd loadAd];
}

- (void)didFailToDisplayAd:(MAAd *)ad withError:(MAError *)error
{
  // Interstitial ad failed to display. AppLovin recommends that you load the next ad.
  [self.interstitialAd loadAd];
}

@end

class ExampleViewController: UIViewController, MAAdDelegate
{
  var interstitialAd: MAInterstitialAd!
  var retryAttempt = 0.0

  func createInterstitialAd()
  {
    interstitialAd = MAInterstitialAd(adUnitIdentifier: "«ad-unit-ID»")
    interstitialAd.delegate = self

    // Load the first ad
    interstitialAd.load()
  }

  // MARK: MAAdDelegate Protocol

  func didLoad(_ ad: MAAd)
  {
    // Interstitial ad is ready to be shown. 'interstitialAd.isReady' will now return 'true'

    // Reset retry attempt
    retryAttempt = 0
  }

  func didFailToLoadAd(forAdUnitIdentifier adUnitIdentifier: String, withError error: MAError)
  {
    // Interstitial ad failed to load
    // AppLovin recommends that you retry with exponentially higher delays up to a maximum delay (in this case 64 seconds)

    retryAttempt += 1
    let delaySec = pow(2.0, min(6.0, retryAttempt))

    DispatchQueue.main.asyncAfter(deadline: .now() + delaySec) {
      self.interstitialAd.load()
    }
  }

  func didDisplay(_ ad: MAAd) {}

  func didClick(_ ad: MAAd) {}

  func didHide(_ ad: MAAd)
  {
    // Interstitial ad is hidden. Pre-load the next ad
    interstitialAd.load()
  }

  func didFail(toDisplay ad: MAAd, withError error: MAError)
  {
    // Interstitial ad failed to display. AppLovin recommends that you load the next ad.
    interstitialAd.load()
  }
}

if ( [self.interstitialAd isReady] )
{
  [self.interstitialAd showAd];
}

if interstitialAd.isReady
{
  interstitialAd.show()
}