激励广告

所谓激励广告,指的是用户可以选择与之互动来换取应用内奖励的一种广告。本指南介绍了如何将 AdMob 激励广告植入到 Unity 应用中。

阅读一些客户成功案例:案例研究 1案例研究 2

本指南介绍了如何将激励广告植入到 Unity 应用中。

前提条件

务必用测试广告进行测试

以下示例代码包含一个广告单元 ID,可供您用来请求测试广告。该测试广告单元 ID 已经过专门配置,可为每个请求返回测试广告(而不是实际投放的广告),因此可以安全地使用。

不过,如果您在AdMob 网页界面中注册了应用,并创建了您自己的广告单元 ID 以便在该应用中使用,请在开发过程中明确将您的设备配置为测试设备

Android

ca-app-pub-3940256099942544/5224354917

iOS

ca-app-pub-3940256099942544/1712485313

初始化移动广告 SDK

加载广告之前,请先调用 MobileAds.Initialize(),以便让应用初始化移动广告 SDK。此操作仅需执行一次,最好是在应用启动时执行。

using GoogleMobileAds;
using GoogleMobileAds.Api;

public class GoogleMobileAdsDemoScript : MonoBehaviour
{
    public void Start()
    {
        // Initialize the Google Mobile Ads SDK.
        MobileAds.Initialize((InitializationStatus initStatus) =>
        {
            // This callback is called once the MobileAds SDK is initialized.
        });
    }
}

如果您使用的是中介功能,请等到回调发生后再加载广告,因为这可确保初始化所有的中介适配器。

实现

植入激励广告的主要步骤如下所示:

  1. 加载激励广告
  2. [可选] 验证服务器端验证 (SSV) 回调
  3. 通过奖励回调展示激励广告
  4. 监听激励广告事件
  5. 清理激励广告
  6. 预加载下一个激励广告

加载激励广告

激励广告的加载是通过对 RewardedAd 类使用静态 Load() 方法完成的。已加载的 RewardedAd 对象以完成处理程序中的参数的形式提供。以下示例展示了如何加载 RewardedAd


  // These ad units are configured to always serve test ads.
#if UNITY_ANDROID
  private string _adUnitId = "ca-app-pub-3940256099942544/5224354917";
#elif UNITY_IPHONE
  private string _adUnitId = "ca-app-pub-3940256099942544/1712485313";
#else
  private string _adUnitId = "unused";
#endif

  private RewardedAd _rewardedAd;

  /// <summary>
  /// Loads the rewarded ad.
  /// </summary>
  public void LoadRewardedAd()
  {
      // Clean up the old ad before loading a new one.
      if (_rewardedAd != null)
      {
            _rewardedAd.Destroy();
            _rewardedAd = null;
      }

      Debug.Log("Loading the rewarded ad.");

      // create our request used to load the ad.
      var adRequest = new AdRequest();

      // send the request to load the ad.
      RewardedAd.Load(_adUnitId, adRequest,
          (RewardedAd ad, LoadAdError error) =>
          {
              // if error is not null, the load request failed.
              if (error != null || ad == null)
              {
                  Debug.LogError("Rewarded ad failed to load an ad " +
                                 "with error : " + error);
                  return;
              }

              Debug.Log("Rewarded ad loaded with response : "
                        + ad.GetResponseInfo());

              _rewardedAd = ad;
          });
  }

[可选] 验证服务器端验证 (SSV) 回调

对于需要服务器端验证回调中额外数据的应用,应使用激励广告的自定义数据功能。在激励广告对象上设置的任何字符串值都将传递给 SSV 回调的 custom_data 查询参数。如果未设置自定义数据值,custom_data 查询参数值不会出现在 SSV 回调中。

以下代码示例演示了如何在加载激励广告后设置 SSV 选项。

// send the request to load the ad.
RewardedAd.Load(_adUnitId, adRequest, (RewardedAd ad, LoadAdError error) =>
{
    // If the operation failed, an error is returned.
    if (error != null || ad == null)
    {
        Debug.LogError("Rewarded ad failed to load an ad with error : " + error);
        return;
    }

    // If the operation completed successfully, no error is returned.
    Debug.Log("Rewarded ad loaded with response : " + ad.GetResponseInfo());

    // Create and pass the SSV options to the rewarded ad.
    var options = new ServerSideVerificationOptions
                          .Builder()
                          .SetCustomData("SAMPLE_CUSTOM_DATA_STRING")
                          .Build()
    ad.SetServerSideVerificationOptions(options);

});

如果您要设置自定义奖励字符串,则必须在展示广告之前设置。

通过奖励回调展示激励广告

展示广告时,您必须提供一个回调,用于处理用户奖励。每次加载时,广告仅可展示一次。您可以使用 CanShowAd() 方法验证广告是否已做好展示准备。

以下代码演示了展示激励广告的最佳方法。

public void ShowRewardedAd()
{
    const string rewardMsg =
        "Rewarded ad rewarded the user. Type: {0}, amount: {1}.";

    if (rewardedAd != null && rewardedAd.CanShowAd())
    {
        rewardedAd.Show((Reward reward) =>
        {
            // TODO: Reward the user.
            Debug.Log(String.Format(rewardMsg, reward.Type, reward.Amount));
        });
    }
}

监听激励广告事件

若要进一步自定义您广告的行为,您可以在广告生命周期内加入许多事件,如打开、关闭等等。您可以通过注册代理来监听这些事件,如下所示。

private void RegisterEventHandlers(RewardedAd ad)
{
    // Raised when the ad is estimated to have earned money.
    ad.OnAdPaid += (AdValue adValue) =>
    {
        Debug.Log(String.Format("Rewarded ad paid {0} {1}.",
            adValue.Value,
            adValue.CurrencyCode));
    };
    // Raised when an impression is recorded for an ad.
    ad.OnAdImpressionRecorded += () =>
    {
        Debug.Log("Rewarded ad recorded an impression.");
    };
    // Raised when a click is recorded for an ad.
    ad.OnAdClicked += () =>
    {
        Debug.Log("Rewarded ad was clicked.");
    };
    // Raised when an ad opened full screen content.
    ad.OnAdFullScreenContentOpened += () =>
    {
        Debug.Log("Rewarded ad full screen content opened.");
    };
    // Raised when the ad closed full screen content.
    ad.OnAdFullScreenContentClosed += () =>
    {
        Debug.Log("Rewarded ad full screen content closed.");
    };
    // Raised when the ad failed to open full screen content.
    ad.OnAdFullScreenContentFailed += (AdError error) =>
    {
        Debug.LogError("Rewarded ad failed to open full screen content " +
                       "with error : " + error);
    };
}

清理激励广告

创建完 RewardedAd 后,请确保在放弃对它的引用前调用 Destroy() 方法:

_rewardedAd.Destroy();

这会通知插件已不再使用该对象,且可回收它占用的内存。此方法调用失败将导致内存泄漏。

预加载下一个激励广告

RewardedAd 是一次性对象。这意味着,在激励广告展示后,该对象就无法再使用了。若要再请求一个激励广告,您需要创建一个新的 RewardedAd 对象。

若要为下一次展示机会准备好激励广告,请在 OnAdFullScreenContentClosedOnAdFullScreenContentFailed 广告事件引发后预加载激励广告。

private void RegisterReloadHandler(RewardedAd ad)
{
    // Raised when the ad closed full screen content.
    ad.OnAdFullScreenContentClosed += () =>
    {
        Debug.Log("Rewarded Ad full screen content closed.");

        // Reload the ad so that we can show another as soon as possible.
        LoadRewardedAd();
    };
    // Raised when the ad failed to open full screen content.
    ad.OnAdFullScreenContentFailed += (AdError error) =>
    {
        Debug.LogError("Rewarded ad failed to open full screen content " +
                       "with error : " + error);

        // Reload the ad so that we can show another as soon as possible.
        LoadRewardedAd();
    };
}

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