Interstitial ads in Xamarin.android

Question

I need to help how to entegry Int ad to my project. I have allready a banner ad but I cant add Int ad. I have few errors.
The error is :"Unable to instantiate abstract type or interface 'InterstitialAd"
The error code:"CS0144"

Answer 1

Hello,​

Welcome to our Microsoft Q&A platform!

Because InterstitialAd is an abstract class, so we cannot new InterstitialAd() directly, we could create a new class to extend the InterstitialAd like following code.

To achieve override method.

   public class MyInterstitialAd : InterstitialAd  
       {  
           private Context context;  
     
           public MyInterstitialAd(Context context)  
           {  
               this.context = context;  
           }  
     
           public override string AdUnitId => throw new System.NotImplementedException();  
     
           public override FullScreenContentCallback FullScreenContentCallback { get => throw new System.NotImplementedException(); set => throw new System.NotImplementedException(); }  
           public override IOnPaidEventListener OnPaidEventListener { get => throw new System.NotImplementedException(); set => throw new System.NotImplementedException(); }  
     
           public override ResponseInfo ResponseInfo => throw new System.NotImplementedException();  
     
           public override void SetImmersiveMode(bool p0)  
           {  
               throw new System.NotImplementedException();  
           }  
     
           public override void Show(Activity p0)  
           {  
               throw new System.NotImplementedException();  
           }  
       }  

Best Regards,

Leon Lu

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Answer 2

Hello, thanks for this post, im trying too to create a new InterstitialAd from my old code. although i would need some help. i understand that from now on we have to override the method but how exactly we should do that?
for example in the previous google ads version where override was not needed in order to show an add we have to do

FullScreenAd = new InterstitialAd(this);
FullScreenAd.AdUnitId = GetString(Resource.String.FullScreen_InterstitialDd_UunitId);
FullScreenAd.AdListener = new AdListener(this);
var adRequest = new AdRequest.Builder().Build();
FullScreenAd.LoadAd(adRequest);
FullScreenAd.Show();

i cant exactly understand how i can now load and show ads and also here https://github.com/xamarin/GooglePlayServicesComponents/blob/main/samples/com.google.android.gms/play-services-ads/AdMobSample/InterstitialActivity.cs the sample is not updated,
thanks