插页式激励广告是一种激励用户的广告格式，采用这种格式时，您可以通过在应用中的自然过渡点自动展示的广告向用户提供奖励。与激励广告不同，用户无需自行选择即可观看插页式激励广告。
前提条件
- 完成入门指南。
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），因此能够安全地使用。
但是，在 Ad Manager 网站界面中注册应用并创建您自己的广告单元 ID 以便在应用中使用后，请在开发期间明确地将您的设备配置为测试设备。
/21775744923/example/rewarded-interstitial
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
植入插页式激励广告的主要步骤如下所示：
- 加载插页式激励广告
- [可选] 验证服务器端验证 (SSV) 回调
- 通过奖励回调展示插页式激励广告
- 监听插页式激励广告事件
- 清理插页式激励广告
- 预加载下一个插页式激励广告
加载插页式激励广告
插页式激励广告的加载是通过对 RewardedInterstitialAd 类使用静态 Load() 方法完成的。该加载方法需要使用广告单元 ID、AdManagerAdRequest 对象，以及在广告加载成功或失败时调用的完成处理程序。已加载的 RewardedInterstitialAd 对象会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 RewardedInterstitialAd。
// This ad unit is configured to always serve test ads.
private string _adUnitId = "/21775744923/example/rewarded-interstitial";
private RewardedInterstitialAd _rewardedInterstitialAd;
/// <summary>
/// Loads the rewarded interstitial ad.
/// </summary>
public void LoadRewardedInterstitialAd()
{
// Clean up the old ad before loading a new one.
if (_rewardedInterstitialAd != null)
{
_rewardedInterstitialAd.Destroy();
_rewardedInterstitialAd = null;
}
Debug.Log("Loading the rewarded interstitial ad.");
// create our request used to load the ad.
var adRequest = new AdManagerAdRequest();
adRequest.Keywords.Add("unity-admob-sample");
// send the request to load the ad.
RewardedInterstitialAd.Load(_adUnitId, adRequest,
(RewardedInterstitialAd ad, LoadAdError error) =>
{
// if error is not null, the load request failed.
if (error != null || ad == null)
{
Debug.LogError("rewarded interstitial ad failed to load an ad " +
"with error : " + error);
return;
}
Debug.Log("Rewarded interstitial ad loaded with response : "
+ ad.GetResponseInfo());
_rewardedInterstitialAd = 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，应使用插页式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 查询参数值不会包含在 SSV 回调中。
以下代码示例演示了如何在加载插页式激励广告后设置 SSV 选项。
// send the request to load the ad.
RewardedInterstitialAd.Load(_adUnitId,
adRequest,
(RewardedInterstitialAd ad, LoadAdError error) =>
{
// If the operation failed, an error is returned.
if (error != null || ad == null)
{
Debug.LogError("Rewarded interstitial ad failed to load an ad " +
" with error : " + error);
return;
}
// If the operation completed successfully, no error is returned.
Debug.Log("Rewarded interstitial 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。
通过奖励回调展示插页式激励广告
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插页式激励广告的最佳方法。
public void ShowRewardedInterstitialAd()
{
const string rewardMsg =
"Rewarded interstitial ad rewarded the user. Type: {0}, amount: {1}.";
if (rewardedInterstitialAd != null && rewardedInterstitialAd.CanShowAd())
{
rewardedInterstitialAd.Show((Reward reward) =>
{
// TODO: Reward the user.
Debug.Log(String.Format(rewardMsg, reward.Type, reward.Amount));
});
}
}
监听插页式激励广告事件
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。您可以通过注册代理来监听这些事件，如下所示。
private void RegisterEventHandlers(RewardedInterstitialAd ad)
{
// Raised when the ad is estimated to have earned money.
ad.OnAdPaid += (AdValue adValue) =>
{
Debug.Log(String.Format("Rewarded interstitial ad paid {0} {1}.",
adValue.Value,
adValue.CurrencyCode));
};
// Raised when an impression is recorded for an ad.
ad.OnAdImpressionRecorded += () =>
{
Debug.Log("Rewarded interstitial ad recorded an impression.");
};
// Raised when a click is recorded for an ad.
ad.OnAdClicked += () =>
{
Debug.Log("Rewarded interstitial ad was clicked.");
};
// Raised when an ad opened full screen content.
ad.OnAdFullScreenContentOpened += () =>
{
Debug.Log("Rewarded interstitial ad full screen content opened.");
};
// Raised when the ad closed full screen content.
ad.OnAdFullScreenContentClosed += () =>
{
Debug.Log("Rewarded interstitial ad full screen content closed.");
};
// Raised when the ad failed to open full screen content.
ad.OnAdFullScreenContentFailed += (AdError error) =>
{
Debug.LogError("Rewarded interstitial ad failed to open " +
"full screen content with error : " + error);
};
}
清理插页式激励广告
创建完 RewardedInterstitialAd 后，请确保在放弃对它的引用前调用 Destroy() 方法：
_rewardedInterstitialAd.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露。
预加载下一个插页式激励广告
RewardedInterstitialAd 是一次性对象。这意味着，在插页式激励广告展示后，该对象就无法再使用了。若要再请求一个插页式激励广告，您需要加载一个新的 RewardedInterstitialAd 对象。
若要为下一次展示机会准备好插页式激励广告，请在 OnAdFullScreenContentClosed 或 OnAdFullScreenContentFailed 广告事件引发后预加载插页式激励广告。
private void RegisterReloadHandler(RewardedInterstitialAd ad)
{
// Raised when the ad closed full screen content.
ad.OnAdFullScreenContentClosed += ()
{
Debug.Log("Rewarded interstitial ad full screen content closed.");
// Reload the ad so that we can show another as soon as possible.
LoadRewardedInterstitialAd();
};
// Raised when the ad failed to open full screen content.
ad.OnAdFullScreenContentFailed += (AdError error) =>
{
Debug.LogError("Rewarded interstitial ad failed to open " +
"full screen content with error : " + error);
// Reload the ad so that we can show another as soon as possible.
LoadRewardedInterstitialAd();
};
}
其他资源
- HelloWorld 示例：所有广告格式的极简植入方案。