Question Pending Purchase Not Working

Hello,

I have been working on IAP API last few days and pending purchases doesn't seem to fire during Initialization phase on app restart.

Project settings:
Unity Version : 2021.2.10f1
IAP Version : 4.1.2
Used examples on this thread: https://forum.unity.com/threads/sample-iap-project.529555/

My IAP flow is basically like this

Initialization:

Code (CSharp):

1.  private void InitializePurchasing()
2.     {
3.         if (IsInitialized())
4.             return;
5.  
6.         _catalog =  ProductCatalog.LoadDefaultCatalog();
7.         var module = StandardPurchasingModule.Instance();
8.         module.useFakeStoreUIMode = FakeStoreUIMode.StandardUser;
9.         builder = ConfigurationBuilder.Instance(module);
10.         SetAllProductIDs();
11.  
12.         IAPConfigurationHelper.PopulateConfigurationBuilder(ref builder,_catalog);    
13.      
14.         UnityPurchasing.Initialize(this, builder);
15.      
16.     }

Initiate Purchase:

Code (CSharp):

1. public void BuyProductID(string productId)
2.     {
3.         if (IsInitialized())
4.         {
5.             Product product = m_StoreController.products.WithID(productId);
6.  
7.             if (product is {availableToPurchase: true})
8.             {
9.                 //MyDebug(string.Format("Purchasing product:" + product.definition.id.ToString()));
10.                 m_StoreController.InitiatePurchase(product);
11.             }
12.             else
13.             {
14.                 //MyDebug("BuyProductID: FAIL. Not purchasing product, either is not found or is not available for purchase");
15.             }
16.         }
17.         else
18.         {
19.             //MyDebug("BuyProductID FAIL. Not initialized.");
20.         }
21.     }

Process Purchase:

Code (CSharp):

1. public PurchaseProcessingResult ProcessPurchase(PurchaseEventArgs purchaseEvent)
2.     {
3.         PurchaseTask(purchaseEvent.purchasedProduct);
4.        
5.         return PurchaseProcessingResult.Pending;
6.     }

Backend Communication:

Code (CSharp):

1. private async void PurchaseTask(Product product)
2.     {
3.         ProcessPopup.Instance.OpenProcessingPanel();
4.         var productID = product.definition.id;
5.         Task<bool> purchaseTask;
6.         try
7.         {
8.             switch (productID)
9.             {
10.                 purchaseTask = //Create a different task depending on product ID
11.                 break;
12.             }
13.             await purchaseTask;
14.             ProcessPopup.Instance.CloseProcessingPanel();
15.             if(purchaseTask.Result)
16.             {
17.                 m_StoreController.ConfirmPendingPurchase(product);
18.             }
19.         }
20.         catch (Exception e)
21.         {
22.             //Exception handling for logger system
23.         }
24.     }

I tried to mimick an unconfirmed purchase by directly returning PurchasTask method. But when I restarted the game on editor IAP didnt fire the pending pruchases on initialize.

I have checked out the source code to understand how the pending purchases are handled but couldn't really find any code that handles it.

Only part of the code that I have found that uses PurchasingResult enum is this part in PurchasingManager.cs:

Code (CSharp):

1. private void ProcessPurchaseIfNew(Product product)
2.         {
3.             if (useTransactionLog && m_TransactionLog.HasRecordOf(product.transactionID))
4.             {
5.                 m_Store.FinishTransaction(product.definition, product.transactionID);
6.                 return;
7.             }
8.  
9.             var p = new PurchaseEventArgs(product);
10.             // Applications may elect to delay confirmations of purchases,
11.             // such as when persisting purchase state asynchronously.
12.             if (PurchaseProcessingResult.Complete == m_Listener.ProcessPurchase(p))
13.                 ConfirmPendingPurchase(product);
14.         }

Also this method is used on ProcessPurchaseOnStart and there is a check whether the product has receipt and transaction ID. I thought this would be the place pending purchases would be found but there doesnt seem to be any products of this sort as it only loads these products from the catalog.

Is ther something I am missing or doing wrong? I have converted this from codeless iap manager so I thought I might have missed some steps.

Thanks

 

I have checked the link and it is definitiely a different project but contents seem to be the same. I still dont understand how pending transactions are not processed again after iap initialization

 

Hi,

Maybe it is because you called ConfirmPendingPurchase before the pending payment was completed.
https://docs.unity3d.com/2021.3/Documentation/Manual/UnityIAPProcessingPurchases.html
The documentation says, call ConfirmPendingPurchase only when you have successfully persisted the purchase.
Your code appears to call ConfirmPendingPurchase() to complete the payment without waiting for the pending payment to complete.
So, why not validate the product receipt in ProcessPurchase() and if it is not pending, call ConfirmPendingPurchase() and return PurchaseProcessingResult.Complete?