[Solved] Query owned products

Does hasReceipt property indicates if the user owns a non-consumable product? I read in another post (http://forum.unity3d.com/threads/iap-ios-non-consumables-receipt-persistence.366755/) that is not working on iOS. If it's not working, is there a reliable way to know if a non-consumable product is owned?

 

Thanks for your answer.

What I want is to manage refunds.

In my Android apps, I call "queryInventoryAsync" method each time the user opens the app, so I update owned products in my local storage each time the app starts. If want to know if a purchase has been refunded, so I can update my local storage.
Also, the Android docs says this is a good practice: https://developer.android.com/training/in-app-billing/purchase-iab-products.html#QueryPurchases

I would like to do the same in my Unity games. Is this possible?

 

Hi @pep_dj,

Currently queryInventoryAsync is called by Unity IAP on Initialization, and in the FetchAdditionalProducts method. I did some googling, and am unclear how queryInventoryAsync manages refunds though...if you have any documentation on it could you link it to me? Thanks!

Apple handles refunds by adding information to a field in their receipt, which Unity IAP doesn't handle right now. You will need to manually parse the receipts Apple returns (and Unity IAP passes on) for the cancellation_date field, which is the one Apple uses to indicate if a refund has been given. Here are some pages that may prove useful:
https://developer.apple.com/library.../apple_ref/doc/uid/DTS40016228-CH1-RECEIPTURL
https://forums.developer.apple.com/thread/46737
https://developer.apple.com/library...teAppStoreReceipt/Chapters/ReceiptFields.html
https://docs.unity3d.com/Manual/UnityIAPiOSMAS.html

I hope that helps!

 

Thanks @erika_d

About Apple: we will try to read and parse app receipt, thanks

About Android:

This is how queryInventoryAsync manages refunds: after it's called, a callback is executed, and I receive a "Inventory" object, so it's like:

Code (CSharp):

1. public void onQueryInventoryFinished(IabResult result, Inventory inventory) {
2.     if (result.isSuccess()){
3.         myProduct.owned = inventory.hasPurchase("my_product_sku");
4.     }
5. }

So, if inventory.hasPurchase returns false, then the product has not been purchased, or it has been refunded.

Here is an example of how Google uses it: https://github.com/googlesamples/an.../android/trivialdrivesample/MainActivity.java

So, in Android, we use the same method (queryInventoryAsync) for restore purchases, and handle refunds, because we update the local inventory each time the app starts.

If hasReceipt is a transient field, how can we keep our local inventory updated in Unity?

 

Hi @pep_dj

Ok so based on your information we took another look at the hasReceipt field, and it turns out our understanding was a little off. hasReceipt is transient on Apple, but should in fact not be transient on google play. When we call queryInventoryAsync and get the data from Google, we do in fact use it to populate the hasReceipt field, which you should then be able to use to keep you local inventory up to date. My apologies for our bad information earlier, we are working on building out the documentation to better reflect this information.

 

Thanks for the information. Now it's clear how to handle refunds in Android and iOS

 

The first link states that "Important: cancellation_date is not currently added for consumable and non-renewing subscription products."

So does that mean it is not possible to handle refunds for consumables?

 

Anyone?

 

From what I've understood in this thread so far: Unity IAP / UnityPurchasing does NOT handle local inventory, and is NOT aware of if you have or have not purchased a Non-Consumable Item (something like a vanity character decoration IAP or Coin Doubler IAP).

Instead, game developers have to build their own systems to store successful purchases locally (PlayerPrefs or save files) or online (program your own server backend, purchase a hosting deal, install and setup your database, setup connection in game and check from your server via some API).

Having read Unity IAP/Unity Purchasing manual a couple of times and spent at least a week extra before getting this to work, Unity IAP/Unity Purchasing folks could maybe make it a little clearer that this is what is expected of the user. This is coming off as especially confusing since I came from a Unibill background and was expecting Unity IAP/Unity Purchasing to inherit inventory-handling as something ready-made in the plugin. Using PlayerPrefs or some save file system to accomplish this is no big deal, but I spent way too much time wondering why the following never works, when all I should've done is to save any non-consumable product Ids and check if they exist.

Code (CSharp):

1. bool hasPurchasedBefore = product.hasReceipt || string.IsNullOrEmpty(product.receipt) == false || string.IsNullOrEmpty(product.transactionID) == false;
2. bool canPurchaseMore = (productType == ProductType.Consumable) ? true : (!hasPurchasedBefore);

Clarification: above code is something I tried, not something I'd recommend; it seems the hasReceipt and receipt fields are entirely unreliable and won't store information in Editor and certainly won't function equally across various platforms.