激励广告自定义事件

前提条件

完成自定义事件设置。

请求激励广告

当到达广告瀑布流中介链中的自定义事件订单项时， 系统会对 您在创建自定义 事件。在此示例中 该方法位于 SampleCustomEvent 中，然后由后者调用 调用 loadRewarded:adConfiguration:completionHandler: 方法， SampleCustomEventRewarded。

要请求激励广告，请创建或修改 GADMediationAdapter和loadRewarded:adConfiguration:completionHandler:。如果 扩展 GADMediationAdapter 的类已存在，请实现 loadRewarded:adConfiguration:completionHandler:。此外， 创建一个新类来实现 GADMediationRewardedAd。

在我们的自定义事件示例中 SampleCustomEvent 实现 GADMediationAdapter 接口，然后委托给 SampleCustomEventRewarded。

Swift

import GoogleMobileAds

class SampleCustomEvent: NSObject, GADMediationAdapter {

  fileprivate var rewardedAd: SampleCustomEventRewarded?
  ...

  func loadRewarded(
    for adConfiguration: GADMediationRewardedAdConfiguration,
    completionHandler: @escaping GADMediationRewardedLoadCompletionHandler
  ) {
    self.rewardedAd = SampleCustomEventRewarded()
    self.rewardedAd?.loadRewarded(
      for: adConfiguration, completionHandler: completionHandler)
  }
}

Objective-C

#import "SampleCustomEvent.h"

@implementation SampleCustomEvent
...

SampleCustomEventRewarded *sampleRewarded;

- (void)loadRewardedForAdConfiguration:
            (GADMediationRewardedAdConfiguration *)adConfiguration
                     completionHandler:
                         (GADMediationRewardedLoadCompletionHandler)
                             completionHandler {
  sampleRewarded = [[SampleCustomEventRewarded alloc] init];
  [sampleRewarded loadRewardedForAdConfiguration:adConfiguration
                               completionHandler:completionHandler];
}

SampleCustomEventRewarded 负责以下任务：

  • 正在加载激励广告。

  • 实现 GADMediationRewardedAd 协议。

  • 接收广告事件回调并向 Google 移动广告 SDK 报告。

AdMob 界面中定义的可选参数是 包含的广告配置中 可以通过 adConfiguration.credentials.settings[@"parameter"]。此参数为 通常是广告联盟 SDK 在调用 实例化广告对象。

Swift

class SampleCustomEventRewarded: NSObject, GADMediationRewardedAd {
  /// The Sample Ad Network rewarded ad.
  var nativeAd: SampleRewarded?

  /// The ad event delegate to forward ad rendering events to the Google Mobile Ads SDK.
  var delegate: GADMediationRewardedAdEventDelegate?

  /// Completion handler called after ad load.
  var completionHandler: GADMediationRewardedLoadCompletionHandler?

  func loadRewarded(
    for adConfiguration: GADMediationRewardedAdConfiguration,
    completionHandler: @escaping GADMediationRewardedLoadCompletionHandler
  ) {
    rewarded = SampleRewarded.init(
      adUnitID: adConfiguration.credentials.settings["parameter"] as? String)
    rewarded?.delegate = self
    let adRequest = SampleAdRequest()
    adRequest.testMode = adConfiguration.isTestRequest
    self.completionHandler = completionHandler
    rewarded?.fetchAd(adRequest)
  }
}

Objective-C

#import "SampleCustomEventRewarded.h"

@interface SampleCustomEventRewarded () <SampleRewardedAdDelegate,
                                         GADMediationRewardedAd> {
  /// The sample rewarded ad.
  SampleRewarded *_rewardedAd;

  /// The completion handler to call when the ad loading succeeds or fails.
  GADMediationRewardedLoadCompletionHandler _loadCompletionHandler;

  /// The ad event delegate to forward ad rendering events to the Google Mobile Ads SDK.
  id <GADMediationRewardedAdEventDelegate> _adEventDelegate;
}
@end

- (void)loadRewardedAdForAdConfiguration:(GADMediationRewardedAdConfiguration *)adConfiguration
                       completionHandler:
                           (GADMediationRewardedLoadCompletionHandler)completionHandler {
  __block atomic_flag completionHandlerCalled = ATOMIC_FLAG_INIT;
  __block GADMediationRewardedLoadCompletionHandler originalCompletionHandler =
      [completionHandler copy];

  _loadCompletionHandler = ^id<GADMediationRewardedAdEventDelegate>(
      _Nullable id<GADMediationRewardedAd> ad, NSError *_Nullable error) {
    // Only allow completion handler to be called once.
    if (atomic_flag_test_and_set(&completionHandlerCalled)) {
      return nil;
    }

    id<GADMediationRewardedAdEventDelegate> delegate = nil;
    if (originalCompletionHandler) {
      // Call original handler and hold on to its return value.
      delegate = originalCompletionHandler(ad, error);
    }

    // Release reference to handler. Objects retained by the handler will also be released.
    originalCompletionHandler = nil;

    return delegate;
  };

  NSString *adUnit = adConfiguration.credentials.settings[@"parameter"];
  _rewardedAd = [[SampleRewardedAd alloc] initWithAdUnitID:adUnit];
  _rewardedAd.delegate = self;
  SampleAdRequest *adRequest = [[SampleAdRequest alloc] init];
  adRequest.testMode = adConfiguration.isTestRequest;
  [_rewardedAd fetchAd:adRequest];
}

无论广告是被成功抓取还是遇到错误，您 会调用 GADMediationRewardedLoadCompletionHandler。如果出现 成功后，传递实现 GADMediationRewardedAd 的类 错误参数的值为 nil；如果失败，则传递 帮助您解决所遇到的错误

通常，这些方法是在 适配器实现的第三方 SDK。在本示例中，示例 SDK 具有带有相关回调的 SampleRewardedAdDelegate：

Swift

func rewardedDidLoad(_ interstitial: SampleRewarded) {
  if let handler = completionHandler {
    delegate = handler(self, nil)
  }
}

func rewarded(
  rewarded: SampleRewarded, didFailToLoadAdWith errorCode: SampleErrorCode
) {
  let error =
    SampleCustomEventUtils.SampleCustomEventErrorWithCodeAndDescription(
      code: SampleCustomEventErrorCode
        .SampleCustomEventErrorAdLoadFailureCallback,
      description:
        "Sample SDK returned an ad load failure callback with error code: \(errorCode)"
    )
  if let handler = completionHandler {
    delegate = handler(nil, error)
  }
}

Objective-C

- (void)rewardedDidLoad:(SampleRewarded *)rewarded {
  _adEventDelegate = _loadCompletionHandler(self, nil);
}

- (void)rewarded:(SampleInterstitial *)rewarded
    didFailToLoadAdWithErrorCode:(SampleErrorCode)errorCode {
  NSError *error = SampleCustomEventErrorWithCodeAndDescription(
      SampleCustomEventErrorAdLoadFailureCallback,
      [NSString stringWithFormat:@"Sample SDK returned an ad load failure "
                                 @"callback with error code: %@",
                                 errorCode]);
  _adEventDelegate = _loadCompletionHandler(nil, error);
}

GADMediationrewardedAd 需要实现 present(viewController:) 方法展示广告：

Swift

func present(from viewController: UIViewController) {
  if let rewarded = rewarded, rewarded.isRewardedLoaded {
    rewarded.show()
  }
}

Objective-C

- (void)presentFromViewController:(UIViewController *)viewController {
  if ([_rewardedAd isRewardedLoaded]) {
    [_rewardedAd show];
  } else {
    NSError *error = SampleCustomEventErrorWithCodeAndDescription(
        SampleCustomEventErrorAdNotLoaded,
        [NSString stringWithFormat:
                      @"The rewarded ad failed to present because the ad was not loaded."]);
    [_adEventDelegate didFailToPresentWithError:error]
  }
}

将中介事件转发至 Google 移动广告 SDK

调用 GADMediationRewardedLoadCompletionHandler 和加载的 返回的 GADMediationRewardedAdEventDelegate 委托对象可以 然后供适配器用于从第三方转发展示事件 SDK 添加到 Google 移动广告 SDK。SampleCustomEventRewarded 类 实现 SampleRewardedAdDelegate 协议，以从 将示例广告联盟添加到 Google 移动广告 SDK

请务必确保您的自定义事件转发的回调数量与 这样您的应用才能从 Google 移动广告 SDK。以下是使用回调的示例：

Swift

func rewardedAdDidPresent(_ rewarded: SampleRewardedAd) {
  delegate?.willPresentFullScreenVideo()
  delegate?.didStartVideo()
}

func rewardedAdUserDidEarnReward(_ rewarded: SampleRewardedAd) {
  GADAdReward aReward = GADAdReward("", rewarded)
  delegate.didRewardUser()
}

Objective-C

- (void)rewardedAdDidPresent:(SampleRewardedAd *)rewardedAd {
  [_adEventDelegate willPresentFullScreenView];
  [_adEventDelegate didStartVideo];
}

- (void)rewardedAd:(nonnull SampleRewardedAd *)rewardedAd
    userDidEarnReward:(NSUInteger)reward {
  GADAdReward *aReward = [[GADAdReward alloc]
      initWithRewardType:@""
            rewardAmount:[NSDecimalNumber numberWithUnsignedInt:reward]];
  [_adEventDelegate didRewardUserWithReward];
}

至此，激励广告的自定义事件实现就完成了。完整的 示例可在 GitHub。 您可以将其用于已获支持的广告网络，也可以将其修改为 展示自定义事件激励广告。