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。
欢迎查看一些客户成功案例:案例研究 1、案例研究 2。本指南介绍了如何在 Unity 应用中植入激励广告。
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可用于请求测试广告的广告单元 ID。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 AdMob 网页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。
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中介适配器。
实现
植入激励广告的主要步骤如下所示:
- 加载激励广告
- [可选] 验证服务器端验证 (SSV) 回调
- 通过奖励回调展示激励广告
- 监听激励广告事件
- 清理激励广告
- 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 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露。
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 OnAdFullScreenContentClosed
或 OnAdFullScreenContentFailed
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();
};
}
其他资源
- HelloWorld 示例:所有广告格式的极简实现方案。