加载单个插页式激励广告

插页式激励广告是一种广告格式，可让您在应用中的自然过渡点自动展示广告，并向观看广告的用户提供奖励。与激励广告不同，插页式激励广告会自动展示，无需用户选择观看。 如需了解详情，请参阅插页式激励广告指南。

本指南介绍了如何将插页式激励广告植入到 Android 应用中。

准备工作

在继续操作之前，请先完成以下事项：

  • 设置 GMA Next-Gen SDK。
  • 使用测试插页式激励广告单元 ID ca-app-pub-3940256099942544/5354046379。
    • 在构建和测试应用时，请确保使用的是测试广告，而不是实际投放的广告。如果您不使用测试广告单元 ID，Google 可能会中止您的账号。
    • 在发布应用之前，请将此 ID 替换为您的广告单元 ID。
    • 如需详细了解 GMA Next-Gen SDK 测试广告，请参阅启用测试广告。

加载广告

以下示例会加载单个广告：

Kotlin

// Load ads after you initialize MobileAds.
RewardedInterstitialAd.load(
  AdRequest.Builder(adUnitId).build(),
  object : AdLoadCallback<RewardedInterstitialAd> {
    override fun onAdLoaded(ad: RewardedInterstitialAd) {
      // Rewarded interstitial ad loaded.
      rewardedInterstitialAd = ad
    }

    override fun onAdFailedToLoad(adError: LoadAdError) {
      // Rewarded interstitial ad failed to load.
      Log.e(TAG, "Rewarded interstitial ad failed to load: ${adError.message}")
      rewardedInterstitialAd = null
    }
  },
)

Java

// Load ads after you initialize MobileAds.
RewardedInterstitialAd.load(
    new AdRequest.Builder(adUnitId).build(),
    new AdLoadCallback<RewardedInterstitialAd>() {
      @Override
      public void onAdLoaded(@NonNull RewardedInterstitialAd ad) {
        // Rewarded interstitial ad loaded.
        rewardedInterstitialAd = ad;
      }

      @Override
      public void onAdFailedToLoad(@NonNull LoadAdError adError) {
        // Rewarded interstitial ad failed to load.
        Log.e(TAG, "Rewarded interstitial ad failed to load: " + adError.getMessage());
        rewardedInterstitialAd = null;
      }
    });

测试时，请使用测试广告单元 ID：ca-app-pub-3940256099942544/5354046379。

展示广告

如需展示插页式激励广告，请调用 show 方法。如需处理奖励事件，请使用 OnUserEarnedRewardListener 对象。

以下示例展示了广告：

Kotlin

private fun showAd(rewardedInterstitialAd: RewardedInterstitialAd, activity: Activity) {
  // Show the ad.
  rewardedInterstitialAd.show(
    activity,
    object : OnUserEarnedRewardListener {
      override fun onUserEarnedReward(rewardItem: RewardItem) {
        // User earned the reward.
        val rewardAmount = rewardItem.amount
        val rewardType = rewardItem.type
      }
    },
  )
}

Java

private void showAd(RewardedInterstitialAd rewardedInterstitialAd, Activity activity) {
  // Show the ad.
  rewardedInterstitialAd.show(
      activity,
      new OnUserEarnedRewardListener() {
        @Override
        public void onUserEarnedReward(@NonNull RewardItem rewardItem) {
          // User earned the reward.
          int rewardAmount = rewardItem.getAmount();
          String rewardType = rewardItem.getType();
        }
      });
}

监听广告事件

在展示广告之前，请先监听广告生命周期事件。以下示例为广告事件注册了回调：

Kotlin

private fun listenToAdEvents() {
  // Listen for ad events.
  val ad = rewardedInterstitialAd
  if (ad == null) {
    Log.e(TAG, "Rewarded interstitial ad is not ready yet.")
    return
  }

  ad.adEventCallback =
    object : RewardedInterstitialAdEventCallback {
      override fun onAdShowedFullScreenContent() {
        // Rewarded interstitial ad did show.
      }

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

      override fun onAdFailedToShowFullScreenContent(
        fullScreenContentError: FullScreenContentError
      ) {
        // Rewarded interstitial ad failed to show.
        Log.e(TAG, "Rewarded interstitial ad failed to show: ${fullScreenContentError.message}")
      }

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

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

Java

private void listenToAdEvents() {
  // Listen for ad events.
  if (rewardedInterstitialAd == null) {
    Log.e(TAG, "Rewarded interstitial ad is not ready yet.");
    return;
  }

  rewardedInterstitialAd.setAdEventCallback(
      new RewardedInterstitialAdEventCallback() {
        @Override
        public void onAdShowedFullScreenContent() {
          // Rewarded interstitial ad did show.
        }

        @Override
        public void onAdDismissedFullScreenContent() {
          // Rewarded interstitial ad did dismiss.
          rewardedInterstitialAd = null;
        }

        @Override
        public void onAdFailedToShowFullScreenContent(
            @NonNull FullScreenContentError fullScreenContentError) {
          // Rewarded interstitial ad failed to show.
          Log.e(
              TAG,
              "Rewarded interstitial ad failed to show: " + fullScreenContentError.getMessage());
        }

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

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

可选：验证服务器端验证 (SSV) 回调

如需在服务器端验证 (SSV) 回调中传递用户和应用上下文，请在展示广告之前在广告对象上设置验证选项。由于 SSV 回调是从 Google 到达您的服务器，不包含会话状态，因此请附加以下可选字符串。Google 会在 SSV 回调中将这些字符串作为已签名的查询参数原样转发：

  • user_id 查询参数：标识要奖励的用户，例如内部账号 ID。
  • custom_data 查询参数：携带应用数据，例如奖励展示位置、游戏关卡或服务器生成的 Nonce。

如果您未设置值，Google 会从 SSV 回调中省略该查询参数。

以下示例在展示广告之前在广告对象中设置自定义数据：

Kotlin

RewardedInterstitialAd.load(
  context,
  AD_UNIT_ID,
  AdRequest.Builder().build(),
  object : RewardedInterstitialAdLoadCallback() {
    override fun onAdLoaded(ad: RewardedInterstitialAd) {
      rewardedInterstitialAd = ad
      val options =
        ServerSideVerificationOptions.Builder().setCustomData("SAMPLE_CUSTOM_DATA_STRING").build()
      rewardedInterstitialAd?.setServerSideVerificationOptions(options)
    }
  },
)

Java

RewardedInterstitialAd.load(
    context,
    AD_UNIT_ID,
    new AdRequest.Builder().build(),
    new RewardedInterstitialAdLoadCallback() {
      @Override
      public void onAdLoaded(RewardedInterstitialAd ad) {
        rewardedInterstitialAd = ad;
        ServerSideVerificationOptions options =
            new ServerSideVerificationOptions.Builder()
                .setCustomData("SAMPLE_CUSTOM_DATA_STRING")
                .build();
        rewardedInterstitialAd.setServerSideVerificationOptions(options);
      }
    });

请将 SAMPLE_CUSTOM_DATA_STRING 替换为自定义数据。

要点：custom_data 查询参数经过百分号编码。在解析该值之前，请先在服务器上对字符串进行网址解码，并验证回调签名，然后再信任 user_id 或 custom_data 查询参数。