RewardedVideoAd代码错误0&3

Question

我尝试在我的Xamarin项目中使用AdMob。我的目标是在我的应用程序上显示一个奖励视频。我有一些问题我无法解决，我想和你分享。这里是我的环境：

• Xamarin v4.0.1.96
• Xamarin Android v6.0.1.10
• Xamarin.GooglePlayServices.Ads v27.0.0

我总是在一个真正的设备上执行这个项目。如果问题来自调试环境，我已经在商店上发布了应用程序，并且我遇到了与本地相同的问题。

using System;
using Android.OS;
using Android.Views;
using Android.Gms.Ads;

    public class ReloadCreditActivity : AppCompatActivityBase, IRewardedVideoAdListener
    {
        public IRewardedVideoAd RewardedVideoAd { get; set; }
        public Button DisplayVideoButton { get; set; }

        private static string AD_UNIT_ID = "ca-app-pub-XXXXXXXXXXXXXX25/XXXXXXXX99";
        private bool _isRewardedVideoLoading;
        private static object _lock = new object();
        protected IRewardedVideoAd _rewardedVideoAd;

        protected override void OnCreate(Bundle bundle)
        {
            base.OnCreate(bundle);
            SetContentView(Resource.Layout.ReloadCreditLayout);

            DisplayVideoButton = FindViewById<Button>(Resource.Id.tabCreditFreemieum_DisplayVideo);

            RewardedVideoAd = MobileAds.GetRewardedVideoAdInstance(this);
            RewardedVideoAd.RewardedVideoAdListener = this;
            LoadRewardedVideoAd();

            DisplayVideoButton.Click += (o, e) =>
            {
                ShowRewardedVideo();
            };
        }

        public void LoadRewardedVideoAd()
        {
            lock (_lock)
            {
                if (!_isRewardedVideoLoading && !RewardedVideoAd.IsLoaded)
                {
                    _isRewardedVideoLoading = true;
                    Bundle extras = new Bundle();
                    extras.PutBoolean("_noRefresh", true);
                    var adMobAdapter = new AdMobAdapter();
                    AdRequest adRequest = new AdRequest.Builder()
                        //.AddTestDevice(AdRequest.DeviceIdEmulator)
                        //.AddTestDevice("FE5692B3DAD1B4CE3BE3BDA2FF4B6103")
                        //.AddNetworkExtrasBundle(adMobAdapter.Class, extras)
                        .Build();
                    RewardedVideoAd.UserId = "pub-74XXXXXXXXXXXXXX";
                    RewardedVideoAd.LoadAd(AD_UNIT_ID, adRequest);
                }
            }
        }

        public void ShowRewardedVideo()
        {
            if (RewardedVideoAd.IsLoaded)
            {
                RewardedVideoAd.Show();
            }
        }

        public void OnRewarded(IRewardItem reward)
        {
            Toast.MakeText(this, string.Format("OnRewarded ! currency: {0} amount: {1}", reward.GetType(), reward.Amount), ToastLength.Short).Show();
        }

        public void OnRewardedVideoAdClosed()
        {
            Toast.MakeText(this, "OnRewardedVideoAdClosed", ToastLength.Short).Show();
            LoadRewardedVideoAd();
        }

        public void OnRewardedVideoAdFailedToLoad(int errorCode)
        {
            lock (_lock)
            {
                _isRewardedVideoLoading = false;
            }
            Toast.MakeText(this, "OnRewardedVideoAdFailedToLoad Code error : " + errorCode, ToastLength.Short).Show();
        }

        public void OnRewardedVideoAdLeftApplication()
        {
            Toast.MakeText(this, "OnRewardedVideoAdLeftApplication", ToastLength.Short).Show();
        }

        public void OnRewardedVideoAdLoaded()
        {
            lock (_lock)
            {
                _isRewardedVideoLoading = false;
            }
            Toast.MakeText(this, "OnRewardedVideoAdLoaded", ToastLength.Short).Show();
        }

        public void OnRewardedVideoAdOpened()
        {
            Toast.MakeText(this, "OnRewardedVideoAdOpened", ToastLength.Short).Show();
        }

        public void OnRewardedVideoStarted()
        {
            Toast.MakeText(this, "OnRewardedVideoStarted", ToastLength.Short).Show();
        }
    }

当我在这个页面上导航时，应用程序总是会引发OnRewardedVideoAdFailedToLoad()回调。我以前得到错误代码0，但目前我得到了错误代码3。

我检查Android设备日志记录的错误。

05-10 11:45:31.600 I/Ads     (14764): Starting ad request.
05-10 11:45:31.600 I/Ads     (14764): Use AdRequest.Builder.addTestDevice("FE5692B3DAD1B4CE3BE3BDA2FF4B6103") to get test ads on this device.
    ...
05-10 11:45:31.910 W/Ads     (14764): Could not instantiate mediation adapter: com.jirbo.adcolony.AdColonyAdapter. com.jirbo.adcolony.AdColonyAdapter
05-10 11:45:31.910 W/Ads     (14764): Fail to instantiate adapter com.jirbo.adcolony.AdColonyAdapter
05-10 11:45:31.910 W/Ads     (14764): android.os.RemoteException
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzag(Unknown Source)
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzae(Unknown Source)
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzem$zza.onTransact(Unknown Source)
...
05-10 11:45:31.910 W/Ads     (14764): Could not instantiate mediation adapter: com.fuse.mediation.FuseAdapter. com.fuse.mediation.FuseAdapter
05-10 11:45:31.910 W/Ads     (14764): Fail to instantiate adapter com.fuse.mediation.FuseAdapter
05-10 11:45:31.910 W/Ads     (14764): android.os.RemoteException
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzag(Unknown Source)
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzae(Unknown Source)
...
05-10 11:45:31.910 W/Ads     (14764): Could not instantiate mediation adapter: com.google.ads.mediation.chartboost.ChartboostAdapter. com.google.ads.mediation.chartboost.ChartboostAdapter
05-10 11:45:31.910 W/Ads     (14764): Fail to instantiate adapter com.google.ads.mediation.chartboost.ChartboostAdapter
05-10 11:45:31.910 W/Ads     (14764): android.os.RemoteException
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzag(Unknown Source)
05-10 11:45:31.910 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzae(Unknown Source)
...
05-10 11:45:31.920 W/Ads     (14764): Could not instantiate mediation adapter: com.google.ads.mediation.unity.UnityAdapter. com.google.ads.mediation.unity.UnityAdapter
05-10 11:45:31.920 W/Ads     (14764): Fail to instantiate adapter com.google.ads.mediation.unity.UnityAdapter
05-10 11:45:31.920 W/Ads     (14764): android.os.RemoteException
05-10 11:45:31.920 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzag(Unknown Source)
05-10 11:45:31.920 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzae(Unknown Source)
...
05-10 11:45:31.920 W/Ads     (14764): Could not instantiate mediation adapter: com.vungle.mediation.VungleAdapter. com.vungle.mediation.VungleAdapter
05-10 11:45:31.920 W/Ads     (14764): Fail to instantiate adapter com.vungle.mediation.VungleAdapter
05-10 11:45:31.920 W/Ads     (14764): android.os.RemoteException
05-10 11:45:31.920 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzag(Unknown Source)
05-10 11:45:31.920 W/Ads     (14764):   at com.google.android.gms.internal.zzel.zzae(Unknown Source)
...
05-10 11:45:31.920 W/Ads     (14764): Failed to load ad: 3

我告诉自己，这可能是我的admob配置与广告商之间的问题，下面是我的设置：

​

​

也许我在广告商的设置上做错了什么，所以这里是我的广告客户。

AdColony：

​

夏特波：

​

温格尔：

​

请给我你的反馈。非常感谢。

Answer 1

我认为问题在于，在您的Xamarin项目中，您没有定义中介适配器。这些都是由不同的广告公司(如vUngle)在他们的SDK中提供的。不幸的是，它们目前都没有提供与Xamarin兼容的SDK，因此您必须遵循将外部程序集导入Xamarin的步骤。有一些人试图这样做(尝试搜索Xamarin论坛)，但我还没有看到任何人发布有效的解决方案。