本頁面由 Cloud Translation API 翻譯而成。

插頁式廣告自訂事件

必要條件

要求插頁式廣告

當瀑布式中介鏈中到達自訂事件明細時，系統會根據您在建立自訂事件時提供的類別名稱，呼叫 loadInterstitialAd() 方法。在本例中，該方法位於 SampleCustomEvent 中，然後會在 SampleInterstitialCustomEventLoader 中呼叫 loadInterstitialAd() 方法。

如要要求插頁式廣告，請建立或修改會擴充 Adapter 以實作 loadInterstitialAd() 的類別。此外，請建立新類別來實作 MediationInterstitialAd。

在自訂事件範例中，SampleCustomEvent 會擴充 Adapter 類別，然後委派至 SampleInterstitialCustomEventLoader。

Java

package com.google.ads.mediation.sample.customevent;

import com.google.android.gms.ads.mediation.Adapter;
import com.google.android.gms.ads.mediation.MediationAdConfiguration;
import com.google.android.gms.ads.mediation.MediationAdLoadCallback;
import com.google.android.gms.ads.mediation.MediationInterstitialAd;
import com.google.android.gms.ads.mediation.MediationInterstitialAdCallback;
...

public class SampleCustomEvent extends Adapter {
  private SampleInterstitialCustomEventLoader interstitialLoader;
  @Override
  public void loadInterstitialAd(
      @NonNull MediationInterstitialAdConfiguration adConfiguration,
      @NonNull
          MediationAdLoadCallback<MediationInterstitialAd, MediationInterstitialAdCallback>
              callback) {
    interstitialLoader = new SampleInterstitialCustomEventLoader(adConfiguration, callback);
    interstitialLoader.loadAd();
  }
}

SampleInterstitialCustomEventLoader 負責執行以下工作：

載入插頁式廣告，並在載入完成後叫用 MediationAdLoadCallback 方法。
實作 MediationInterstitialAd 介面。
接收並回報廣告事件回呼至 Google Mobile Ads SDK

AdMob 使用者介面中定義的選用參數會納入廣告設定。您可以透過 adConfiguration.getServerParameters().getString(MediationConfiguration.CUSTOM_EVENT_SERVER_PARAMETER_FIELD) 存取此參數。這個參數通常是廣告聯播網 SDK 在例項化廣告物件時所需的廣告單元 ID。

Java

package com.google.ads.mediation.sample.customevent;

import com.google.android.gms.ads.mediation.Adapter;
import com.google.android.gms.ads.mediation.MediationInterstitialAdConfiguration;
import com.google.android.gms.ads.mediation.MediationAdLoadCallback;
import com.google.android.gms.ads.mediation.MediationInterstitialAd;
import com.google.android.gms.ads.mediation.MediationInterstitialAdCallback;
...

public class SampleInterstitialCustomEventLoader extends SampleAdListener
    implements MediationInterstitialAd {

  /** A sample third-party SDK interstitial ad. */
  private SampleInterstitial sampleInterstitialAd;

  /** Configuration for requesting the interstitial ad from the third-party network. */
  private final MediationInterstitialAdConfiguration mediationInterstitialAdConfiguration;

  /** Callback for interstitial ad events. */
  private MediationInterstitialAdCallback interstitialAdCallback;

  /** Callback that fires on loading success or failure. */
  private final MediationAdLoadCallback<MediationInterstitialAd, MediationInterstitialAdCallback>
      mediationAdLoadCallback;

  /** Constructor. */
  public SampleInterstitialCustomEventLoader(
      @NonNull MediationInterstitialAdConfiguration mediationInterstitialAdConfiguration,
      @NonNull MediationAdLoadCallback<MediationInterstitialAd, MediationInterstitialAdCallback>
              mediationAdLoadCallback) {
    this.mediationInterstitialAdConfiguration = mediationInterstitialAdConfiguration;
    this.mediationAdLoadCallback = mediationAdLoadCallback;
  }

  /** Loads the interstitial ad from the third-party ad network. */
  public void loadAd() {
    // All custom events have a server parameter named "parameter" that returns
    // back the parameter entered into the UI when defining the custom event.
    Log.i("InterstitialCustomEvent", "Begin loading interstitial ad.");
    String serverParameter = mediationInterstitialAdConfiguration.getServerParameters().getString(
        MediationConfiguration.CUSTOM_EVENT_SERVER_PARAMETER_FIELD);
    Log.d("InterstitialCustomEvent", "Received server parameter.");

    sampleInterstitialAd =
        new SampleInterstitial(mediationInterstitialAdConfiguration.getContext());
    sampleInterstitialAd.setAdUnit(serverParameter);

    // Implement a SampleAdListener and forward callbacks to mediation.
    sampleInterstitialAd.setAdListener(this);

    // Make an ad request.
    Log.i("InterstitialCustomEvent", "start fetching interstitial ad.");
    sampleInterstitialAd.fetchAd(
        SampleCustomEvent.createSampleRequest(mediationInterstitialAdConfiguration));
  }

public SampleAdRequest createSampleRequest(
      MediationAdConfiguration mediationAdConfiguration) {
    SampleAdRequest request = new SampleAdRequest();
    request.setTestMode(mediationAdConfiguration.isTestRequest());
    request.setKeywords(mediationAdConfiguration.getMediationExtras().keySet());
    return request;
  }
}

視廣告是否成功擷取或是否發生錯誤而定，您可以呼叫 onSuccess() 或 onFailure()。您可以傳入實作 MediationInterstitialAd 的類別例項，呼叫 onSuccess()。

一般來說，這些方法會在轉接程式實作的第三方 SDK 回呼中實作。在本例中，Sample SDK 有 SampleAdListener 和相關的回呼：

Java

@Override
public void onAdFetchSucceeded() {
  interstitialAdCallback = mediationAdLoadCallback.onSuccess(this);
}

@Override
public void onAdFetchFailed(SampleErrorCode errorCode) {
  mediationAdLoadCallback.onFailure(SampleCustomEventError.createSampleSdkError(errorCode));
}

MediationInterstitialAd 需要實作 showAd() 方法才能顯示廣告：

Java

@Override
public void showAd(@NonNull Context context) {
  sampleInterstitialAd.show();
}

將中介服務事件轉送至 Google Mobile Ads SDK

呼叫 onSuccess() 後，轉接器就能使用傳回的 MediationInterstitialAdCallback 物件，將來自第三方 SDK 的呈現事件轉送至 Google Mobile Ads SDK。SampleInterstitialCustomEventLoader 類別會擴充 SampleAdListener 介面，將來自範例廣告聯播網的回呼轉送至 Google Mobile Ads SDK。

請務必盡可能轉寄這些回呼，讓應用程式從 Google Mobile Ads SDK 接收這些對等事件。以下是使用回呼的範例：

Java

@Override
public void onAdFullScreen() {
  interstitialAdCallback.reportAdImpression();
  interstitialAdCallback.onAdOpened();
}

@Override
public void onAdClosed() {
  interstitialAdCallback.onAdClosed();
}

這樣就完成了插頁式廣告的自訂事件導入作業。您可以在 GitHub 上取得完整範例。您可以將其與已支援的廣告聯播網搭配使用，也可以修改該廣告，以便顯示自訂事件插播廣告。