Quando o item de linha de evento personalizado é alcançado na cadeia de mediação em cascata, o método loadBanner:adConfiguration:completionHandler: é chamado no nome da classe fornecido ao criar um evento personalizado. Nesse caso, o método está em SampleCustomEvent, que chama o método loadBanner:adConfiguration:completionHandler: em SampleCustomEventBanner.
Para solicitar um anúncio de banner, crie ou modifique uma classe que implemente
GADMediationAdapter e loadBanner:adConfiguration:completionHandler:. Se uma classe que estende GADMediationAdapter já existir, implemente loadBanner:adConfiguration:completionHandler: nela. Além disso, crie uma
nova classe para implementar GADMediationBannerAd.
No nosso exemplo de evento personalizado, SampleCustomEvent implementa a interface GADMediationAdapter e delega para SampleCustomEventBanner.
Receber e informar callbacks de eventos de anúncio ao SDK dos anúncios para dispositivos móveis do Google.
O parâmetro opcional definido na interface do Ad Manager é incluído na configuração do anúncio.
O parâmetro pode ser acessado usando
adConfiguration.credentials.settings[@"parameter"]. Normalmente, esse parâmetro é um identificador de bloco de anúncios que um SDK de rede de publicidade exige ao instanciar um objeto de anúncio.
Se o anúncio for buscado com sucesso ou encontrar um erro, você
chamará GADMediationBannerLoadCompletionHandler. Em caso de sucesso, transmita a classe que implementa GADMediationBannerAd com um valor nil para o parâmetro de erro. Em caso de falha, transmita o erro encontrado.
Normalmente, esses métodos são implementados em callbacks do SDK de terceiros que seu adaptador implementa. Neste exemplo, o SDK de amostra
tem um SampleBannerAdDelegate com callbacks relevantes:
Encaminhar eventos de mediação ao SDK dos anúncios para dispositivos móveis do Google
Depois de chamar GADMediationBannerLoadCompletionHandler com um anúncio carregado,
o objeto delegado GADMediationBannerAdEventDelegate retornado pode ser
usado pelo adaptador para encaminhar eventos de apresentação do SDK de terceiros ao
SDK dos anúncios para dispositivos móveis do Google. A classe SampleCustomEventBanner implementa o
protocolo SampleBannerAdDelegate para encaminhar callbacks da rede
de anúncios de exemplo ao SDK dos anúncios para dispositivos móveis do Google.
É importante que seu evento personalizado encaminhe o máximo possível desses callbacks para que seu app receba os eventos equivalentes do SDK dos Anúncios para Dispositivos Móveis do Google.
Confira um exemplo de uso de callbacks:
Isso conclui a implementação de eventos personalizados para anúncios de banner. O exemplo completo está disponível no GitHub.
É possível usar com uma rede de publicidade já compatível ou modificar para
mostrar banners de eventos personalizados.
[[["Fácil de entender","easyToUnderstand","thumb-up"],["Meu problema foi resolvido","solvedMyProblem","thumb-up"],["Outro","otherUp","thumb-up"]],[["Não contém as informações de que eu preciso","missingTheInformationINeed","thumb-down"],["Muito complicado / etapas demais","tooComplicatedTooManySteps","thumb-down"],["Desatualizado","outOfDate","thumb-down"],["Problema na tradução","translationIssue","thumb-down"],["Problema com as amostras / o código","samplesCodeIssue","thumb-down"],["Outro","otherDown","thumb-down"]],["Última atualização 2025-09-02 UTC."],[[["\u003cp\u003eTo request a banner ad within a custom event, create a class that implements \u003ccode\u003eGADMediationAdapter\u003c/code\u003e and the \u003ccode\u003eloadBanner:adConfiguration:completionHandler:\u003c/code\u003e method.\u003c/p\u003e\n"],["\u003cp\u003eA separate class implementing \u003ccode\u003eGADMediationBannerAd\u003c/code\u003e should handle loading the ad, reporting events to the Google Mobile Ads SDK, and providing a \u003ccode\u003eUIView\u003c/code\u003e property for display.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eGADMediationBannerLoadCompletionHandler\u003c/code\u003e is called upon ad load success or failure, passing the \u003ccode\u003eGADMediationBannerAd\u003c/code\u003e instance or an error, respectively.\u003c/p\u003e\n"],["\u003cp\u003eForward relevant ad events (like clicks) from the third-party ad network SDK to the Google Mobile Ads SDK using the \u003ccode\u003eGADMediationBannerAdEventDelegate\u003c/code\u003e received from the \u003ccode\u003eGADMediationBannerLoadCompletionHandler\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eRefer to the complete custom event example on GitHub for implementation details and guidance.\u003c/p\u003e\n"]]],["To request a banner ad via custom events, implement `GADMediationAdapter` and `loadBanner:adConfiguration:completionHandler:`, delegating to a class that implements `GADMediationBannerAd`. This class is responsible for loading the banner, implementing `GADMediationBannerAd`, and reporting ad event callbacks. The `loadBanner:` method within this class fetches the ad, and then invokes a completion handler (`GADMediationBannerLoadCompletionHandler`) whether loading succeeds or fails, passing the banner ad or an error, respectively. Finally, use `GADMediationBannerAdEventDelegate` to forward presentation events.\n"],null,["Prerequisites\n\nComplete the [custom events setup](/ad-manager/mobile-ads-sdk/ios/custom-events/setup).\n\nRequest a banner ad\n\nWhen the custom event line item is reached in the waterfall mediation chain,\nthe `loadBanner:adConfiguration:completionHandler:` method is called on the\nclass name you provided when [creating a custom\nevent](/ad-manager/mobile-ads-sdk/ios/custom-events/setup#create). In this case,\nthat method is in `SampleCustomEvent`, which then calls\nthe `loadBanner:adConfiguration:completionHandler:` method in\n`SampleCustomEventBanner`.\n\nTo request a banner ad, create or modify a class that implements\n`GADMediationAdapter` and `loadBanner:adConfiguration:completionHandler:`. If a\nclass that extends `GADMediationAdapter` already exists, implement\n`loadBanner:adConfiguration:completionHandler:` there. Additionally, create a\nnew class to implement `GADMediationBannerAd`.\n\nIn our custom event example,\n[`SampleCustomEvent`](//github.com/googleads/googleads-mobile-ios-mediation/blob/main/example/CustomEvent/SampleCustomEvent.m) implements\nthe `GADMediationAdapter` interface and then delegates to\n`SampleCustomEventBanner`. \n\nSwift \n\n```swift\nimport GoogleMobileAds\n\nclass SampleCustomEvent: NSObject, MediationAdapter {\n\n fileprivate var bannerAd: SampleCustomEventBanner?\n ...\n\n func loadBanner(\n for adConfiguration: MediationBannerAdConfiguration,\n completionHandler: @escaping GADMediationBannerLoadCompletionHandler\n ) {\n self.bannerAd = SampleCustomEventBanner()\n self.bannerAd?.loadBanner(\n for: adConfiguration, completionHandler: completionHandler)\n }\n}\n```\n\nObjective-C \n\n```objective-c\n#import \"SampleCustomEvent.h\"\n\n@implementation SampleCustomEvent\n...\n\nSampleCustomEventBanner *sampleBanner;\n\n- (void)loadBannerForAdConfiguration:\n (GADMediationBannerAdConfiguration *)adConfiguration\n completionHandler:(GADMediationBannerLoadCompletionHandler)\n completionHandler {\n sampleBanner = [[SampleCustomEventBanner alloc] init];\n [sampleBanner loadBannerForAdConfiguration:adConfiguration\n completionHandler:completionHandler];\n}\n```\n\n`SampleCustomEventBanner` is responsible for the following tasks:\n\n- Loading the banner ad and invoking a\n [`GADMediationBannerLoadCompletionHandler`](/ad-manager/mobile-ads-sdk/ios/api/reference/Protocols/GADMediationAdapter) method once\n loading completes.\n\n- Implementing the `GADMediationBannerAd` protocol.\n\n- Receiving and reporting ad event callbacks to Google Mobile Ads SDK.\n\nThe optional parameter defined in the Ad Manager UI is\nincluded in the ad configuration.\nThe parameter can be accessed through\n`adConfiguration.credentials.settings[@\"parameter\"]`. This parameter is\ntypically an ad unit identifier that an ad network SDK requires when\ninstantiating an ad object. \n\nSwift \n\n```swift\nclass SampleCustomEventBanner: NSObject, MediationBannerAd {\n /// The Sample Ad Network banner ad.\n var bannerAd: SampleBanner?\n\n /// The ad event delegate to forward ad rendering events to Google Mobile Ads SDK.\n var delegate: MediationBannerAdEventDelegate?\n\n /// Completion handler called after ad load\n var completionHandler: GADMediationBannerLoadCompletionHandler?\n\n func loadBanner(\n for adConfiguration: MediationBannerAdConfiguration,\n completionHandler: @escaping GADMediationBannerLoadCompletionHandler\n ) {\n // Create the bannerView with the appropriate size.\n let adSize = adConfiguration.adSize\n bannerAd = SampleBanner(\n frame: CGRect(x: 0, y: 0, width: adSize.size.width, height: adSize.size.height))\n bannerAd?.delegate = self\n bannerAd?.adUnit = adConfiguration.credentials.settings[\"parameter\"] as? String\n let adRequest = SampleAdRequest()\n adRequest.testMode = adConfiguration.isTestRequest\n self.completionHandler = completionHandler\n bannerAd?.fetchAd(adRequest)\n }\n}\n```\n\nObjective-C \n\n```objective-c\n#import \"SampleCustomEventBanner.h\"\n\n@interface SampleCustomEventBanner () \u003cSampleBannerAdDelegate,\n GADMediationBannerAd\u003e {\n /// The sample banner ad.\n SampleBanner *_bannerAd;\n\n /// The completion handler to call when the ad loading succeeds or fails.\n GADMediationBannerLoadCompletionHandler _loadCompletionHandler;\n\n /// The ad event delegate to forward ad rendering events to the Google Mobile\n /// Ads SDK.\n id \u003cGADMediationBannerAdEventDelegate\u003e _adEventDelegate;\n}\n@end\n\n@implementation SampleCustomEventBanner\n\n- (void)loadBannerForAdConfiguration:\n (GADMediationBannerAdConfiguration *)adConfiguration\n completionHandler:(GADMediationBannerLoadCompletionHandler)\n completionHandler {\n __block atomic_flag completionHandlerCalled = ATOMIC_FLAG_INIT;\n __block GADMediationBannerLoadCompletionHandler originalCompletionHandler =\n [completionHandler copy];\n\n _loadCompletionHandler = ^id\u003cGADMediationBannerAdEventDelegate\u003e(\n _Nullable id\u003cGADMediationBannerAd\u003e ad, NSError *_Nullable error) {\n // Only allow completion handler to be called once.\n if (atomic_flag_test_and_set(&completionHandlerCalled)) {\n return nil;\n }\n\n id\u003cGADMediationBannerAdEventDelegate\u003e delegate = nil;\n if (originalCompletionHandler) {\n // Call original handler and hold on to its return value.\n delegate = originalCompletionHandler(ad, error);\n }\n\n // Release reference to handler. Objects retained by the handler will also\n // be released.\n originalCompletionHandler = nil;\n\n return delegate;\n };\n\n NSString *adUnit = adConfiguration.credentials.settings[@\"parameter\"];\n _bannerAd = [[SampleBanner alloc]\n initWithFrame:CGRectMake(0, 0, adConfiguration.adSize.size.width,\n adConfiguration.adSize.size.height)];\n _bannerAd.adUnit = adUnit;\n _bannerAd.delegate = self;\n SampleAdRequest *adRequest = [[SampleAdRequest alloc] init];\n adRequest.testMode = adConfiguration.isTestRequest;\n [_bannerAd fetchAd:adRequest];\n}\n```\n\nWhether the ad is successfully fetched or encounters an error, you\nwould call `GADMediationBannerLoadCompletionHandler`. In the event of success,\npass through the class that implements `GADMediationBannerAd` with a `nil` value\nfor the error parameter; in the event of failure, pass through the error you\nencountered.\n\nTypically, these methods are implemented inside callbacks from the\nthird-party SDK your adapter implements. For this example, the Sample SDK\nhas a `SampleBannerAdDelegate` with relevant callbacks: \n\nSwift \n\n```swift\nfunc bannerDidLoad(_ banner: SampleBanner) {\n if let handler = completionHandler {\n delegate = handler(self, nil)\n }\n}\n\nfunc banner(\n _ banner: SampleBanner, didFailToLoadAdWith errorCode: SampleErrorCode\n) {\n let error =\n SampleCustomEventUtilsSwift.SampleCustomEventErrorWithCodeAndDescription(\n code: SampleCustomEventErrorCodeSwift\n .SampleCustomEventErrorAdLoadFailureCallback,\n description:\n \"Sample SDK returned an ad load failure callback with error code: \\(errorCode)\"\n )\n if let handler = completionHandler {\n delegate = handler(nil, error)\n }\n}\n```\n\nObjective-C \n\n```objective-c\n- (void)bannerDidLoad:(SampleBanner *)banner {\n _adEventDelegate = _loadCompletionHandler(self, nil);\n}\n\n- (void)banner:(SampleBanner *)banner\n didFailToLoadAdWithErrorCode:(SampleErrorCode)errorCode {\n NSError *error = SampleCustomEventErrorWithCodeAndDescription(\n SampleCustomEventErrorAdLoadFailureCallback,\n [NSString stringWithFormat:@\"Sample SDK returned an ad load failure \"\n @\"callback with error code: %@\",\n errorCode]);\n _adEventDelegate = _loadCompletionHandler(nil, error);\n}\n```\n\n`GADMediationBannerAd` requires implementing a `UIView` property: \n\nSwift \n\n```swift\nvar view: UIView {\n return bannerAd ?? UIView()\n}\n```\n\nObjective-C \n\n```objective-c\n- (nonnull UIView *)view {\n return _bannerAd;\n}\n```\n\nForward mediation events to Google Mobile Ads SDK\n\nOnce you've called `GADMediationBannerLoadCompletionHandler` with a loaded ad,\nthe returned `GADMediationBannerAdEventDelegate` delegate object can then be\nused by the adapter to forward presentation events from the third-party SDK to\nGoogle Mobile Ads SDK. The `SampleCustomEventBanner` class implements the\n`SampleBannerAdDelegate` protocol to forward callbacks from the sample ad\nnetwork to Google Mobile Ads SDK.\n\nIt's important that your custom event forwards as many of these callbacks as\npossible, so that your app receives these equivalent events from Google Mobile Ads SDK.\nHere's an example of using callbacks: \n\nSwift \n\n```swift\nfunc bannerWillLeaveApplication(_ banner: SampleBanner) {\n delegate?.reportClick()\n}\n```\n\nObjective-C \n\n```objective-c\n- (void)bannerWillLeaveApplication:(SampleBanner *)banner {\n [_adEventDelegate reportClick];\n}\n```\n\nThis completes the custom events implementation for banner ads. The full example\nis available on\n[GitHub](//github.com/googleads/googleads-mobile-ios-mediation/tree/main/example/CustomEvent).\nYou can use it with an ad network that is already supported or modify it to\ndisplay custom event banner ads."]]