MyUnifiedNativeAd.OnUnifiedNativeAdLoaded（Android.Gms.Ads.Formats.UnifiedNativeAd 广告）在某些设备上崩溃 _ Xamarin.Android

Question

我的 Xamarin.Android 应用程序在某些设备上崩溃 Stacktrace 说 MyUnifiedNativeAd.OnUnifiedNativeAdLoaded (Android.Gms.Ads.Formats.UnifiedNativeAd 广告)

这是堆栈跟踪

MyUnifiedNativeAd.OnUnifiedNativeAdLoaded (Android.Gms.Ads.Formats.UnifiedNativeAd ad)
UnifiedNativeAd+IOnUnifiedNativeAdLoadedListenerInvoker.n_OnUnifiedNativeAdLoaded_Lcom_google_android_gms_ads_formats_UnifiedNativeAd_ (System.IntPtr jnienv, System.IntPtr native__this, System.IntPtr native_ad)
(wrapper dynamic-method) Android.Runtime.DynamicMethodNameCounter.26(intptr,intptr,intptr)

这是我的代码，我在其中膨胀和初始化 Listener

UnifiedNativeAdView adView = (UnifiedNativeAdView)LayoutInflater.Inflate(Resource.Layout.ad_unified, null);
            FrameLayout frameLayout = inflated.FindViewById<FrameLayout>(Resource.Id.frameLayout1);
            var a = new MyUnifiedNativeAd(adView, frameLayout);
            AdLoader adLoader = new AdLoader.Builder(Context, Resources.GetString(Resource.String.ad_unit_id))
                .ForUnifiedNativeAd(a)
                .WithAdListener(new MyAdListener())
                .Build();
            adLoader.LoadAd(new AdRequest.Builder().Build());

这是实现 IOnUnifiedNativeAdLoadedListener 接口的监听器Class

class MyUnifiedNativeAd : Java.Lang.Object, IOnUnifiedNativeAdLoadedListener
    {
        UnifiedNativeAdView AdView = null;
        FrameLayout frame = null;
        public MyUnifiedNativeAd( UnifiedNativeAdView adv, FrameLayout f)
        {
            AdView = adv;
            frame = f;
        }
        public void OnUnifiedNativeAdLoaded(UnifiedNativeAd ad)
        {
            if (ad is null)
                return;
            MediaView mv = AdView.FindViewById<MediaView>(Resource.Id.ad_media);
            TextView advertiser = AdView.FindViewById<TextView>(Resource.Id.ad_advertiser);
            TextView headline = AdView.FindViewById<TextView>(Resource.Id.ad_headline);
            ImageView img = AdView.FindViewById<ImageView>(Resource.Id.ad_app_icon);
            TextView body = AdView.FindViewById<TextView>(Resource.Id.ad_body);
            RatingBar rating = AdView.FindViewById<RatingBar>(Resource.Id.ad_stars);
            TextView price = AdView.FindViewById<TextView>(Resource.Id.ad_price);
            TextView store = AdView.FindViewById<TextView>(Resource.Id.ad_store);
            Button action = AdView.FindViewById<Button>(Resource.Id.ad_call_to_action);
            List<View> v = new List<View>() { mv, advertiser, headline, img, body, rating, price, store, action };
            action.Text = ad.CallToAction;
            store.Text = ad.Store;
            price.Text = ad.Price;
            rating.NumStars = ad.StarRating is null ? 0 : ad.StarRating.IntValue();
            body.Text = ad.Body;
            img.SetImageDrawable(ad.Icon.Drawable);
            headline.Text = ad.Headline;
            advertiser.Text = ad.Advertiser;
            AdView.MediaView = mv;
            AdView.SetNativeAd(ad);
            frame.RemoveAllViews();
            frame.AddView(AdView);
        }
    }

Answer 1

我解决了我的问题我认同在 "string.xml" 文件中添加 "google_app_id" 后，admob app id 值，我测试了很多次，错误消失了

Answer 2

已解决！有时 Google 向我们发送没有图标的广告。如果广告没有图标，则表示图标属性为空。当我尝试将 Icon 设置为 ImageView 时，它抛出异常

MyUnifiedNativeAd.OnUnifiedNativeAdLoaded（Android.Gms.Ads.Formats.UnifiedNativeAd 广告）在某些设备上崩溃 _ Xamarin.Android

MyUnifiedNativeAd.OnUnifiedNativeAdLoaded (Android.Gms.Ads.Formats.UnifiedNativeAd ad) crash on some devices _ Xamarin.Android

c#

xamarin.android

unifiednativeadview