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Deferred Purchase

Discussion in 'Unity IAP' started by mateuszjaworski, Aug 16, 2021.

  1. mateuszjaworski

    mateuszjaworski

    Joined:
    Aug 8, 2019
    Posts:
    12
    Hi,

    Lately I've received a lot of reports regarding issues with payments. We started testing payments with slow card and it seems like our game gets stuck right there. I've seen some posts on this forum that say this option does not work on google side. Is that still correct? In any case, I've also noticed that in IGooglePlayStoreExtension you can find IsPurchasedProductDeferred method and in extension we can use SetDeferredPurchaseListener. Apple has kind of similar thing in IAppleExtensions, there is RegisterPurchaseDeferredListener. My question is what is the right way to use them? I didn't find clear asnwer anywhere. After I register my listener when does it get called? During the same session as soon as it gets resolved? Or does it get triggered only when I restart my app? What is the right way to handle that? Should I ConfirmPendingPurchase in DefferedListener callback or only after I get success or fail result?
     
    mateuszjaworski, Aug 16, 2021
    #1

  2. JeffDUnity3D

    JeffDUnity3D

    Unity Technologies

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    Until the user pays for a deferred purchase, the purchaseState = 4 in the receipt. Until purchaseState = 1, you'll want to return Pending from ProcessPurchase. You should take no action in the deferred listener, unless you just want to alert the user "We received your purchase intent" or similar. This code shows how to check https://forum.unity.com/threads/google-play-iap-problem.1140367/#post-7351220
     
    JeffDUnity3D, Aug 16, 2021
    #2

  3. mateuszjaworski

    mateuszjaworski

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    @JeffDUnity3D Ok got it, check purchaseState in receipt. I assume the first receipt I get is going to have purchaseState = 4, but what then? Does PurchaseSuccess get called at some point during the same session and I get another receipt with purchaseState 1? Or does it happen after game restart? Or maby I should check something periodicaly to find out when that receipt has changed its' purchaseState?
     
    mateuszjaworski, Aug 17, 2021
    #3

  4. JeffDUnity3D

    JeffDUnity3D

    Unity Technologies

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    ProcessPurchase triggers when the game starts and IAP initializes for any products still in purchaseState = 4. Just continue to return Pending from ProcessPurchase until purchaseState = 1, perhaps a couple of days later when they start the app again. Return Complete at this point, and award the product to the user.
     
    JeffDUnity3D, Aug 17, 2021
    #4

  5. mateuszjaworski

    mateuszjaworski

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    Thanks, I'll try that!
     
    mateuszjaworski, Aug 17, 2021
    #5

  6. AppSD

    AppSD

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    Feb 9, 2021
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    I am unable to see purchaseState for Apple receipt. How do I check deferred purchase state for Apple in ProcessPurchase? Thanks.
     
    AppSD, Nov 23, 2021
    #6

  7. SamOYUnity3D

    SamOYUnity3D

    Unity Technologies

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    May 12, 2019
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    603
    You can refer to here to implement Apple's "Ask-to-Buy" feature: https://docs.unity3d.com/Manual/UnityIAPiOSMAS.html
     
    SamOYUnity3D, Nov 23, 2021
    #7
    Petr777 and AppSD like this.

  8. AppSD

    AppSD

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    Feb 9, 2021
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    Does the purchase button need to be disabled when the purchase is pending? Would Unity IAP misbehave if the button can be clicked during the pending period?
     
    AppSD, Nov 23, 2021
    #8

  9. SamOYUnity3D

    SamOYUnity3D

    Unity Technologies

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    I think you don't have to disable the purchase button. If a player clicks the purchase button to purchase a pending product, we will call the store's purchase API and the store will handle this situation.
     
    SamOYUnity3D, Nov 24, 2021
    #9

  10. JeffDUnity3D

    JeffDUnity3D

    Unity Technologies

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    Yes, you would likely receive a "Duplicate transaction" error if another purchase was attempted while the original is still in Pending.
     
    JeffDUnity3D, Nov 29, 2021
    #10