Unity video ad works fine until scene is reloaded

Hello everyone! I have a game that when you lose 3 lives a lose panel appears and it gives you 3 options, Continue button, this will resume your progress (you need to watch the ad) Restart Level button (it reloads the scene) and Back to menu button. When I enter for the first time to the game the continue button displays the ad and resumes the game properly but If then lose again and click the restart button the ad will not work the next time.

An error in console appears that the object is DESTROYED. Please im having such a headache trying to solve this, any solution? Im using Advertisement Package Manager version 3.4.1

 

Yes, these errors appear :
MissingReferenceException: The object of type 'ContinueAdButton' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.

and the object is not destroyed and the references are all correct, I mean it works at the first time.

 

Both, editor and device

 

When you load a new scene on the first time you have an object called Placeholder and after the scene load, you don't have... For me, update [Window -> Package Manager -> Advertisement to 3.4.1] seems to fix it.

 

Hello! Thanks for your reply, I updated it and stills gives me the error, any other solution?

 

This is mi continue ad button code:

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.UI;
5. using UnityEngine.Advertisements;
6.  
7. public class ContinueAdButton : MonoBehaviour, IUnityAdsListener
8. {
9.     //string gameId = "3328561";
10.     string myPlacementId = "rewardedVideo";
11.     Button continueButton;
12.  
13.     [Header("Sounds")]
14.     public AudioSource buttonClick;
15.  
16.     [Header("Referencia de scripts")]
17.     [SerializeField] private BallManager[] ballManagerScript; // Referencias a los scripts de las bolas.
18.     [SerializeField] private ScaleTweenLoseGame scaleTweenLoseScript;
19.  
20.     void Start()
21.     {
22.         continueButton = GetComponent<Button>();
23.  
24.         // Set interactivity to be dependent on the Placement’s status:
25.         continueButton.interactable = Advertisement.IsReady(myPlacementId);
26.  
27.         // Map the ShowRewardedVideo function to the button’s click listener:
28.         if (continueButton)
29.         {
30.             continueButton.onClick.AddListener(ShowRewardedVideo);
31.         }
32.             // Initialize the Ads listener and service:
33.             Advertisement.AddListener(this);
34.             //Advertisement.Initialize(gameId, true);
35.     }
36.  
37.     // Implement a function for showing a rewarded video ad:
38.     void ShowRewardedVideo()
39.     {
40.         buttonClick.Play();
41.         Advertisement.Show(myPlacementId);
42.         continueButton.onClick.RemoveAllListeners();
43.     }
44.  
45.     #region Rewarded Ads Methods
46.  
47.     // Implement IUnityAdsListener interface methods:
48.     public void OnUnityAdsReady(string placementId)
49.     {
50.         // If the ready Placement is rewarded, activate the button:
51.         if (placementId == myPlacementId)
52.         {
53.             continueButton.interactable = true;
54.         }
55.     }
56.  
57.     public void OnUnityAdsDidFinish(string placementId, ShowResult showResult)
58.     {
59.         // Define conditional logic for each ad completion status:
60.         if (showResult == ShowResult.Finished)
61.         {
62.             AdSeen();
63.         }
64.         else if (showResult == ShowResult.Skipped)
65.         {
66.             // Do not reward the user for skipping the ad.
67.         }
68.         else if (showResult == ShowResult.Failed)
69.         {
70.             Debug.LogWarning("The ad did not finish due to an error.");
71.         }
72.     }
73.  
74.     public void OnUnityAdsDidError(string message)
75.     {
76.         // Log the error.
77.     }
78.  
79.     public void OnUnityAdsDidStart(string placementId)
80.     {
81.      
82.     }
83.  
84.     public void AdSeen()
85.     {
86.         // Reward the user for watching the ad to completion.
87.         Time.timeScale = 1;
88.         GameManager.instance.lifes = 3;
89.         GameManager.instance.startingTime = 3f;
90.         scaleTweenLoseScript.OnClose();
91.         GameManager.instance.startCounter.Play();
92.         GameManager.instance.StartingGame();
93.  
94.         for (int i = 0; i < ballManagerScript.Length; i++)
95.         {
96.             ballManagerScript[i].ActBallFall();
97.         }
98.     }
99.  
100.     #endregion
101. }

I initialize the sdk in another script to only initialize once.

For reloading the scene I use

Code (CSharp):

1. SceneManager.LoadScene("Game");

The button works the first time but when I reload the game the ad shows but the ShowResult == Finished doesnt work.

How can I solve this?

 

The gameobject is only on the game scene, because it is only used there. I tried the DontDestroyOnLoad but it stil gave me error. I will try the first thing you said see if it works.

I think the error is on the advertising part, because I got all the code that needs to be done after the ad is played and put it on an appart method to see if it worked and it worked all the time, on the first time and on reloading. But when I implement it as seen above it just works the first time.

 

MissingReferenceException: The object of type 'GameObject' has been destroyed but you are still trying to access it.
Your script should either check if it is null or you should not destroy the object.
UnityEngine.GameObject.GetComponent[T] () (at C:/buildslave/unity/build/Runtime/Export/Scripting/GameObject.bindings.cs:28)
ScaleTweenLoseGame.OnClose () (at Assets/Scripts/Menu/TweenAnimations/ScaleTweenLoseGame.cs:41)
ContinueAdButton.AdSeen () (at Assets/Scripts/Ads/ContinueAdButton.cs:92)
ContinueAdButton.OnUnityAdsDidFinish (System.String placementId, UnityEngine.Advertisements.ShowResult showResult) (at Assets/Scripts/Ads/ContinueAdButton.cs:64)
UnityEngine.Advertisements.Platform.Platform+<>c__DisplayClass41_0.<UnityAdsDidFinish>b__0 () (at Library/PackageCache/com.unity.ads@3.4.1/Runtime/Advertisement/Platform/Platform.cs:171)
UnityEngine.Advertisements.Utilities.CoroutineExecutor.Update () (at Library/PackageCache/com.unity.ads@3.4.1/Runtime/Advertisement/Utilities/CoroutineExecutor.cs:17)

 

ScaleTweenLoseGame is only called once when the panel where the continue button, the retry button and the menu button are located. is in an OnEnable so a nice tweening animation is made. I tried taking the script off and just activating and desactivating the canvas and the error goes to another place. So the ScaleTweenLoseGame is not the problem

 

Code (CSharp):

1.   scaleTweenLoseScript.OnClose();
2.  

This only calls a method that does the closing tweening animation

 

What you said here is pretty interesting, let me check if all the tweening is done before reloading, I will post a reply after testing.

 

I just tested and the tweening is completely done before realoading the scene. I will try and re-explain my problem more detailed to see if it helps.

You are playing the game, you lose, and when you lose this "lost panel" appears with its tweening. The lost panel has 3 buttons, continue button (you watch an ad, an then you can resume your game where you died WITHOUT RELOADING SCENE), retry (does a SceneManager.LoadScene("Game"); to start the game from 0) and menu, which is loading the menu scene.

So you lose and click the continue button, you see the ad, your game gets resumed, and everything is working fine. What is the problem? That if you click on the retry button (this button only loads again the scene, nothing else) when you die and click on the continue button, that error appears.

Why does it work on the first time and it doesnt work when yo reload the scene?

The game scene is loaded because you click the "play" button on the menu so there are not loading problems at the beggning.

Things I tried:

1) I tried DonDestroyOnLoad and it didnt work.

2) I deleted the tweening script and only abled and disabled the panel, then the error showed up in another object, the message was the same, that it was being destroyed.

3) I tried putting asigning my AdSeen(); method to the continue button WITHOUT any ad thing. And it worked at the first time and when reloading scene.

So, why when I put the method alone without any ads showing it works all the time and with the ads it only works on the first time?

I think maybe I am doing something wrong with the ads, I PLEASE need help for this, I have been 2 weeks struggling with this error.

Extra info:
1) If you click the "menu" button on the "lost panel" and click the "play" button, is like clicking the retry button, the continue button will not work. It only works the FIRST time it is loaded.

2) Continue button and lost panel are disabled when the scene starts, they only enable when player dies.

3) Continue button DOES NOT DO any scene loading.

4) When click on the retry button, the tweening is done completely AND THEN the scene is loaded.

 

Hi there
I'm having the exact problem. First adshow work, after scene reload it gives me this error too. It says the object is destroyed but in reality its not. Pls update me if you find any kind of solution.

 

Hello! No.. I dind´t find any solution yet. Im having such a headache trying to solve this. Unity Technologies didnt responde anymore.. If you find any solution please tell me.

 

How Do I open a support ticket to share the project?

 

I had the same problem too! It is happens because the listener

Code (CSharp):

1. Advertisement.AddListener(this);

is not removed when the scene is reloaded. So when you reload the scene the second time, you have 2 listeners active. The old listener from the previous scene gets called once the ad is done, but it references objects from the old scene.

Anyway to solve it, just add Advertisement.RemoveListener(this) before you reload the scene.

 

It worked!!! Thank you mate! I have been weeks trying to solve this... You are a hero <3

 

OMG, I had that problem for so long, you finally solved it!! Unity should definitely add that to their Ad manual. Thank you so much for sharing that with us!

 

Hi, I'm new to this. Could u tell me where I'm supposed to add The remove Listener component ? Is it before the add listener line ?

 

Do i need to reload the scene in my script containing the onAdFInished method ?

 

I have a button that rewards extra gems on the main menu scene after watching the ad.

I also use another GameObject called Gem Manager in which i update the value of the gems and display them on the home screen. It is in this object that i reload the scene. Is there a way to call removeListener() in another gameobject. if yes, then what should i pass as its parameter because using Advertisements.RemoveListener(this) throws an error

EDIT:
I figured it out. I used the following function in my script and now it works like a charm!!

public void OnDestroy()
{
Advertisement.RemoveListener(this)'
}

 

@SpeedyDev Thank you so much for that! you're a legend! and thanks @Udit_Warikoo
I also added

public void OnDestroy()
{
Advertisement.RemoveListener(this);
}

to the RewardedAdButton Script in my game and it worked like a charm!
Thank you all!

 

Hello, is this function no longer in use? I can't implement RemoveListener

 

@kocakberatfurkan I'm looking at your code that you shared above and it seems there are a few typos which might be preventing your code from working.
instead of
public void OnDestroy()
{
Advertisement.RemoveListener(this)'
}

you need to type:

public void OnDestroy()
{
Advertisement.RemoveListener(this);
}

the line of code needs to be further tabbed in and you need to initialize the code by putting a ; at the end.

p.s sincere apologies I had a typo in my previous post that didn't have a ; at the end. I have since rectified this.

 

Thanks for replying, I realized that typo but my problem is, I do not have a RemoveListener function after I do Advertisement. , I am asking if this function changed its name or I am missing some library implementation ?

 

Oh I realized that I am using Admob ads, so it might be related to this. But I have the same problem, does anybody know a similar function for me to use ?

 

I have only commented on this website once before, I came to say thank you for this simple but so hard to freaking find fix! I hadn't needed to remove a listener before!

 

Hi, Did you find a solution since I am also I’m using admob and facing similar issue