Coroutine Stops after first yield

Hi,

I am experiencing this issue where the code after the first yield in the coroutine is not executed (Method: LoadScene(int scene) )

Someone has an idea about what I am doing wrong here?

This is the class which manages my Interstitial Ads. I generated most of the code with Unity mediation. The only change I did was adding the start method and adding the isClosed attribute, which I am using as a flag (true = when ad is show , and false = when ad is closed)

Code (CSharp):

1. using System;
2. using System.Collections;
3. using System.ComponentModel;
4. using System.Threading.Tasks;
5. using Unity.Services.Core;
6. using Unity.Services.Mediation;
7. using UnityEngine;
8.  
9. public class InterstitialAds : MonoBehaviour, IDisposable
10. {
11.     IInterstitialAd ad;
12.     string adUnitId = "Interstitial_Android";
13.     string gameId = "XXXXX";
14.  
15.     public bool isClosed = true;
16.  
17.     void Start()
18.     {
19.         #if UNITY_IOS
20.             adUnitId = "Interstitial _iOS";
21.             gameId = "XXXXX"
22.         #elif UNITY_ANDROID
23.             adUnitId = "Interstitial_Android";
24.             gameId = "XXXXX";
25.         #endif
26.         _ = InitServices();
27.         isClosed = true;
28.     }
29.  
30.     public async Task InitServices()
31.     {
32.         try
33.         {
34.             InitializationOptions initializationOptions = new InitializationOptions();
35.             initializationOptions.SetGameId(gameId);
36.             await UnityServices.InitializeAsync(initializationOptions);
37.  
38.             InitializationComplete();
39.         }
40.         catch (Exception e)
41.         {
42.             InitializationFailed(e);
43.         }
44.     }
45.  
46.     public void SetupAd()
47.     {
48.         //Create
49.         ad = MediationService.Instance.CreateInterstitialAd(adUnitId);
50.  
51.         //Subscribe to events
52.         ad.OnClosed += AdClosed;
53.         ad.OnClicked += AdClicked;
54.         ad.OnLoaded += AdLoaded;
55.         ad.OnFailedLoad += AdFailedLoad;
56.  
57.         // Impression Event
58.         MediationService.Instance.ImpressionEventPublisher.OnImpression += ImpressionEvent;
59.     }
60.  
61.     public void Dispose() => ad?.Dispose();
62.  
63.  
64.     public async void ShowAd()
65.     {
66.         if (ad.AdState == AdState.Loaded)
67.         {
68.             try
69.             {
70.                 isClosed = false;
71.                 Debug.Log("Here. IsClosed: " + isClosed);
72.                 InterstitialAdShowOptions showOptions = new InterstitialAdShowOptions();
73.                 showOptions.AutoReload = true;
74.                 await ad.ShowAsync(showOptions);
75.                 AdShown();
76.             }
77.             catch (ShowFailedException e)
78.             {
79.                 isClosed = true;
80.                 AdFailedShow(e);
81.             }
82.             catch (Exception)
83.             {
84.                 isClosed = true;
85.             }
86.         }
87.     }
88.  
89.     void InitializationComplete()
90.     {
91.         SetupAd();
92.         _ = LoadAd();
93.     }
94.  
95.     async Task LoadAd()
96.     {
97.         try
98.         {
99.             await ad.LoadAsync();
100.         }
101.         catch (LoadFailedException)
102.         {
103.             Debug.Log("Loading Ad Failed");
104.         }
105.     }
106.  
107.     void InitializationFailed(Exception e)
108.     {
109.         Debug.Log("Initialization Failed: " + e.Message);
110.     }
111.  
112.     void AdLoaded(object sender, EventArgs e)
113.     {
114.         Debug.Log("Ad loaded");
115.     }
116.  
117.     void AdFailedLoad(object sender, LoadErrorEventArgs e)
118.     {
119.         Debug.Log("Failed to load ad");
120.         Debug.Log(e.Message);
121.     }
122.  
123.     void AdShown()
124.     {
125.         isClosed = false;
126.         Debug.Log("Ad shown! closed? : " + isClosed);
127.     }
128.  
129.     void AdClosed(object sender, EventArgs e)
130.     {
131.         Debug.Log("Ad has closed");
132.         isClosed = true;
133.         // Execute logic after an ad has been closed.
134.     }
135.  
136.     void AdClicked(object sender, EventArgs e)
137.     {
138.         Debug.Log("Ad has been clicked");
139.         isClosed = true;
140.         // Execute logic after an ad has been clicked.
141.     }
142.  
143.     void AdFailedShow(ShowFailedException e)
144.     {
145.         Debug.Log(e.Message);
146.         isClosed = true;
147.     }
148.  
149.     void ImpressionEvent(object sender, ImpressionEventArgs args)
150.     {
151.         var impressionData = args.ImpressionData != null ? JsonUtility.ToJson(args.ImpressionData, true) : "null";
152.         Debug.Log("Impression event from ad unit id " + args.AdUnitId + " " + impressionData);
153.     }
154.  
155.     public IEnumerator WaitForAdToClose()
156.     {
157.         yield return new WaitUntil(() => isClosed);
158.     }
159.  
160. }
161.  

I am using this object in another script:

Code (CSharp):

1.     public void Quit()
2.     {
3.         bannerAd.Hide();
4.         interstitialAds.ShowAd();
5.  
6.         StartCoroutine(LoadScene(0));
7.     }
8.  
9.     IEnumerator LoadScene(int scene)
10.     {
11.         yield return new WaitUntil(() => interstitialAds.isClosed);
12.  
13.         interstitialAds.Dispose();
14.  
15.         Time.timeScale = 1f;
16.         transition.SetTrigger("fade");
17.  
18.         yield return new WaitForSeconds(1);
19.  
20.         SceneManager.LoadScene(scene);
21.     }

Thanks in advance!

 

Did you ever get an answer? I'm having a similar problem. SOMETIMES (not always) after the ad runs, control isn't returned so the AdShown() method is never called.