Admob Interstitial ads are not showing up?

Questions & Answers
1

I want to show interstitial ads after 5 times of gameplay. I have written the below code and added it to a game object. So that when the user clicks the restart button 5 times (ie, after 5 gameplays) an interstitial ad should show up but its not. Banner ads are showing correctly but interstitial ads are not showing?

using System; 
using UnityEngine; 
using GoogleMobileAds; 
using GoogleMobileAds.Api;
    
    public class GoogleAdmob : MonoBehaviour {
    
    private int count; private BannerView bannerView; private InterstitialAd interstitial;
    
    void Start(){
    
      count = PlayerPrefs.GetInt("Count");
     
      RequestBanner ();
      RequestInterstitial ();
     
      bannerView.Show ();
      if (count > 5) {
          ShowInterstitial();
          count = 0;
          PlayerPrefs.SetInt ("Count", count);
     
      }
      count += 1;
      PlayerPrefs.SetInt ("Count", count);
     
    }
    
    void Update(){
    
      if(Input.GetKeyDown(KeyCode.Escape)){
          bannerView.Destroy();
          interstitial.Destroy();
          Application.LoadLevel("MainMenu");
      }
     
    }
    
    private void RequestBanner() {
    
      #if UNITY_ANDROID
      string adUnitId = "ca-app-pub-xxxxxxxxxxxxxxxxxxxxxxxxxx";
      #elif UNITY_IPHONE
          string adUnitId = "INSERT_IOS_BANNER_AD_UNIT_ID_HERE";
      #else
          string adUnitId = "unexpected_platform";
      #endif
     
      // Create a 320x50 banner at the top of the screen.
      bannerView = new BannerView(adUnitId, AdSize.SmartBanner, AdPosition.Bottom);
      AdRequest request = new AdRequest.Builder().Build();
      
      // Register for ad events.
      bannerView.AdLoaded += HandleAdLoaded;
      bannerView.AdFailedToLoad += HandleAdFailedToLoad;
      bannerView.AdOpened += HandleAdOpened;
      bannerView.AdClosing += HandleAdClosing;
      bannerView.AdClosed += HandleAdClosed;
      bannerView.AdLeftApplication += HandleAdLeftApplication;
      // Load a banner ad.
      bannerView.LoadAd(request);
    }
    
    private void RequestInterstitial() {
    
      #if UNITY_ANDROID
      string adUnitId = "ca-app-pub-xxxxxxxxxxxxxxxxxxxxxxxxxx";
      #elif UNITY_IPHONE
          string adUnitId = "INSERT_IOS_INTERSTITIAL_AD_UNIT_ID_HERE";
      #else
          string adUnitId = "unexpected_platform";
      #endif
     
      // Create an interstitial.
      interstitial = new InterstitialAd(adUnitId);
      AdRequest request = new AdRequest.Builder().Build();
     
      // Register for ad events.
      interstitial.AdLoaded += HandleInterstitialLoaded;
      interstitial.AdFailedToLoad += HandleInterstitialFailedToLoad;
      interstitial.AdOpened += HandleInterstitialOpened;
      interstitial.AdClosing += HandleInterstitialClosing;
      interstitial.AdClosed += HandleInterstitialClosed;
      interstitial.AdLeftApplication += HandleInterstitialLeftApplication;
      // Load an interstitial ad.
      interstitial.LoadAd(request);
    }
    
    // Returns an ad request with custom ad targeting.
    
    private void ShowInterstitial() { 
       if (interstitial.IsLoaded()) { 
              interstitial.Show(); 
           }
    
    }
3

For me the problem seems to happen because the interstitial ad takes a while to load (sometimes up to 3 seconds). You’re trying to call it too fast, and it’s not loaded, so nothing happens. What I did was continually try to show the interstitial ad in void Update until it shows (using a bool called shown):

void Update () {
			if (shown == false) {
			ShowInterstitial();
			Debug.Log ("Not yet...");
			}  	}
public void ShowInterstitial()
{
	if (interstitial.IsLoaded())
	{
		interstitial.Show();
		shown = true;
	} else	{
		Debug.Log ("Interstitial is not ready yet.");
	}	}

You could also load the ad at the beginning of the level, and then only call it when the round is over.

2

are you using the right ca-app-pub-xxxxxxxxxxxxxxxxxxxxxxxxxx for instertitial ? you create a full ad for your app in admob ?

4

download this last plugin https://github.com/unity-plugins/Unity-Admob
and then add code

4.How to integrate Interstitial into Unity 3d app?

Here is the minimal banner code to create an interstitial.

Admob.Instance().loadInterstitial();

Unlike banners, interstitials need to be explicitly shown. At an appropriate stopping point in your app, check that the interstitail is ready before showing it:

if (Admob.Instance().isInterstitialReady()) {
  Admob.Instance().showInterstitial();
}