插頁式廣告自訂事件

必要條件

完成自訂事件設定。

請求插頁式廣告

當刊登序列中介服務鏈執行到自訂事件委刊項，系統會以您在建立自訂事件時指定的類別名稱，呼叫 loadInterstitialAd() 方法。在本例中，該方法位於 SampleCustomEvent，會接著呼叫 SampleInterstitialCustomEventLoader 中的 loadInterstitialAd() 方法。

如要請求插頁式廣告，請建立或修改 Adapter 的延伸類別，以導入 loadInterstitialAd()。此外，請建立新類別來導入 MediationInterstitialAd。

在我們的自訂事件範例中，SampleCustomEvent 延伸自 Adapter 類別，並委派給 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 負責處理以下工作：

• 載入插頁式廣告，並於載入完畢時叫用 MediationAdLoadCallback 方法。

• 導入 MediationInterstitialAd 介面。

• 接收廣告事件回呼，並回報給 Google Mobile Ads SDK。

在 Ad Manager UI 中定義的選用參數會包含在廣告設定，使用 adConfiguration.getServerParameters().getString(MediationConfiguration.CUSTOM_EVENT_SERVER_PARAMETER_FIELD) 即可存取。這項參數通常是廣告單元 ID，廣告聯播網 SDK 在例項化廣告物件時會用到。

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;
  }
}

視廣告成功擷取或發生錯誤而定。您可能要呼叫 onSuccess() 或 onFailure()。傳遞導入 MediationInterstitialAd 的類別執行個體，即可呼叫 onSuccess()。

這些方法通常是在轉接程式導入的第三方 SDK 回呼中執行。以本例來說，範例 SDK 的 SampleAdListener 含有相關回呼：

Java

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

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

MediationInterstitialAd 須導入 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，轉接程式可使用傳回的 MediationInterstitialAdCallback 物件，將呈現事件從第三方 SDK 轉送至 Google Mobile Ads SDK。SampleInterstitialCustomEventLoader 類別可延伸 SampleAdListener 介面，將回呼從範例廣告聯播網轉送到 Google Mobile Ads SDK。

自訂事件應盡量將這些回呼轉送至 Google Mobile Ads SDK，這樣應用程式才能收到相應的事件通知。以下是回呼使用範例：

Java

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

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

到這裡就完成插頁式廣告的自訂事件導入設定！GitHub 上有完整的範例可參考。範例可直接用於支援的廣告聯播網，您也可修改現有範例，顯示自訂事件插頁式廣告。