獎勵廣告

透過獎勵廣告，您可以在使用者與影片廣告/可試玩廣告互動或填寫問卷調查後，提供應用程式內商品做為獎勵。

必要條件

完成入門指南的步驟。

一律使用測試廣告進行測試

建構及測試應用程式時，請務必使用測試廣告，而非實際的正式廣告。否則帳戶可能會遭到停權。

如要載入測試廣告，最簡單的方法是使用 Android 獎勵廣告專用的測試廣告單元 ID：

ca-app-pub-3940256099942544/5224354917

這個 ID 經過特別設定，每次請求都會傳回測試廣告。在編寫程式碼、測試及偵錯階段，您可以在應用程式中自由使用，發布應用程式前，請務必用自己的廣告單元 ID 替換這類 ID。

如要進一步瞭解 Google Mobile Ads SDK (Beta 版) 測試廣告的運作方式，請參閱「測試廣告」。

載入廣告

如要載入獎勵廣告，請呼叫 RewardedAd 的靜態 load() 方法，並傳遞 AdLoadCallback<RewardedAd> 來接收成功載入的廣告，或處理可能發生的錯誤。

警告： 載入廣告前，請務必先初始化 Google Mobile Ads SDK (Beta 版)。

Kotlin

import com.google.android.libraries.ads.mobile.sdk.common.AdLoadCallback
import com.google.android.libraries.ads.mobile.sdk.common.AdRequest
import com.google.android.libraries.ads.mobile.sdk.common.FullScreenContentError
import com.google.android.libraries.ads.mobile.sdk.common.LoadAdError
import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardedAd
import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardedAdEventCallback
import com.google.android.libraries.ads.mobile.sdk.MobileAds

class RewardedActivity : Activity() {
  private var rewardedAd: RewardedAd? = null

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    // Load ads after you inititalize Google Mobile Ads SDK (beta).
    RewardedAd.load(
      AdRequest.Builder(AD_UNIT_ID).build(),
      object : AdLoadCallback<RewardedAd> {
        override fun onAdLoaded(ad: RewardedAd) {
          // Rewarded ad loaded.
          rewardedAd = ad
        }

        override fun onAdFailedToLoad(adError: LoadAdError) {
          // Rewarded ad failed to load.
          rewardedAd = null
        }
      },
    )
  }

  companion object {
    // Sample rewarded ad unit ID.
    const val AD_UNIT_ID = "ca-app-pub-3940256099942544/5224354917"
  }
}

Java

import com.google.android.libraries.ads.mobile.sdk.common.AdLoadCallback;
import com.google.android.libraries.ads.mobile.sdk.common.AdRequest;
import com.google.android.libraries.ads.mobile.sdk.common.FullScreenContentError;
import com.google.android.libraries.ads.mobile.sdk.common.LoadAdError;
import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardedAd;
import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardedAdEventCallback;
import com.google.android.libraries.ads.mobile.sdk.MobileAds;

class RewardedActivity extends Activity {
  // Sample rewarded ad unit ID.
  private static final String AD_UNIT_ID = "ca-app-pub-3940256099942544/5224354917";
  private RewardedAd rewardedAd;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Load ads after you initialize Google Mobile Ads SDK (beta).
    RewardedAd.load(
        new AdRequest.Builder(AD_UNIT_ID).build(),
        new AdLoadCallback<RewardedAd>() {
          @Override
          public void onAdLoaded(@NonNull RewardedAd rewardedAd) {
            // Rewarded ad loaded.
            AdLoadCallback.super.onAdLoaded(rewardedAd);
            RewardedActivity.this.rewardedAd = rewardedAd;
          }

          @Override
          public void onAdFailedToLoad(@NonNull LoadAdError adError) {
            // Rewarded ad failed to load.
            AdLoadCallback.super.onAdFailedToLoad(adError);
            rewardedAd = null;
          }
        }
    );
  }
}

設定 RewardedAdEventCallback

RewardedAdEventCallback 會處理與顯示 RewardedAd 相關的事件。顯示獎勵廣告前，請務必設定回呼：

Kotlin

// Listen for ad events.
rewardedAd?.adEventCallback =
  object : RewardedAdEventCallback {
    override fun onAdShowedFullScreenContent() {
      // Rewarded ad did show.
    }

    override fun onAdDismissedFullScreenContent() {
      // Rewarded ad did dismiss.
      rewardedAd = null
    }

    override fun onAdFailedToShowFullScreenContent(
      fullScreenContentError: FullScreenContentError
    ) {
      // Rewarded ad failed to show.
      rewardedAd = null
    }

    override fun onAdImpression() {
      // Rewarded ad did record an impression.
    }

    override fun onAdClicked() {
      // Rewarded ad did record a click.
    }
  }

Java

// Listen for ad events.
rewardedAd.setAdEventCallback(
    new RewardedAdEventCallback() {
      @Override
      public void onAdShowedFullScreenContent() {
        // Rewarded ad did show.
        RewardedAdEventCallback.super.onAdShowedFullScreenContent();
      }

      @Override
      public void onAdDismissedFullScreenContent() {
        // Rewarded ad did dismiss.
        RewardedAdEventCallback.super.onAdDismissedFullScreenContent();
        rewardedAd = null;
      }

      @Override
      public void onAdFailedToShowFullScreenContent(
          @NonNull FullScreenContentError fullScreenContentError) {
        // Rewarded ad failed to show.
        RewardedAdEventCallback.super.onAdFailedToShowFullScreenContent(
            fullScreenContentError);
        rewardedAd = null;
      }

      @Override
      public void onAdImpression() {
        // Rewarded ad did record an impression.
        RewardedAdEventCallback.super.onAdImpression();
      }

      @Override
      public void onAdClicked() {
        // Rewarded ad did record a click.
        RewardedAdEventCallback.super.onAdClicked();
      }
    }
);

顯示廣告

請使用 show() 方法顯示獎勵廣告，並透過 OnUserEarnedRewardListener 物件來處理獎勵事件。

Kotlin

// Show the ad.
rewardedAd?.show(
  this@RewardedActivity,
  object : OnUserEarnedRewardListener {
    override fun onUserEarnedReward(rewardItem: RewardItem) {
      // User earned the reward.
      val rewardAmount = rewardItem.amount
      val rewardType = rewardItem.type
    }
  },
)

Java

// Show the ad.
rewardedAd.show(
    RewardedActivity.this,
    new OnUserEarnedRewardListener() {
      @Override
      public void onUserEarnedReward(@NonNull RewardItem rewardItem) {
        // User earned the reward.
        int rewardAmount = rewardItem.getAmount();
        String rewardType = rewardItem.getType();
    }
});

常見問題

初始化呼叫有逾時限制嗎？

中介服務聯播網執行初始化 10 秒後，即使尚未完成，Google Mobile Ads SDK (Beta 版) 仍會叫用 OnInitializationCompleteListener。

收到初始化回呼時，如果部分中介服務聯播網尚未就緒，該怎麼辦？

建議在 OnInitializationCompleteListener 的回呼中載入廣告。即使中介服務聯播網尚未就緒，Google Mobile Ads SDK (Beta 版) 仍可發出廣告請求。因此，就算初始化程序是在逾時之後才完成，中介服務聯播網仍能處理該工作階段後續的廣告請求。

您可以在應用程式工作階段中呼叫 MobileAds.getInitializationStatus()，持續輪詢所有轉接程式的初始化狀態。

如何找出特定中介服務聯播網尚未就緒的原因？

AdapterStatus.getDescription() 會說明轉接程式無法處理廣告請求的原因。

執行 onAdDismissedFullScreenContent() 回呼之前，是否一定會先呼叫 onUserEarnedReward() 回呼？

如果是 Google 廣告，所有 onUserEarnedReward() 呼叫一定發生在 onAdDismissedFullScreenContent() 之前。對於透過中介服務放送的廣告，回呼順序取決於第三方廣告聯播網 SDK 的導入方式。若廣告聯播網 SDK 僅提供一個包含獎勵資訊的關閉回呼，中介服務轉接程式會在 onAdDismissedFullScreenContent() 之前叫用 onUserEarnedReward()。

範例

請下載並執行範例應用程式，瞭解如何使用 Google Mobile Ads SDK (Beta 版)。