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Which of these delegate methods *should be* called upon completion of a purchase, or should both be called?

A
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Which of these delegate methods are expected to be called upon completion of a purchase, or are both expected to be called? I can’t find any documentation at all on the site for PaywallViewControllerDelegate, am I missing something? I can tell what sometimes happens, but I would really like to know what is the expected/prescribed behavior for these two delegate methods. If I put the same actions in both for a successful purchase, it could cause problems, and I don’t want to have to deal with a race condition.

paywallViewController(_, didFinishPurchasingWith: )

paywallViewController(_, didFinishPurchasingWith: , transaction: )

Best answer by joan-cardona

Hi @AppDev777,

You can use one or another based on your needs since they have extra parameters. Our recommendation is to use the one I pasted before and is the one you can find in the sample apps. You shouldn’t implement both at the same time.

 

Let me know if this helps!

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3 replies

joan-cardona
RevenueCat Staff
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  • joan-cardona
  • RevenueCat Staff
  • 336 replies
  • August 14, 2024

Hi @AppDev777,

Here’s how you should set the delegate method:

extension ViewController: PaywallViewControllerDelegate {

    func paywallViewController(_ controller: PaywallViewController,
                               didFinishPurchasingWith customerInfo: CustomerInfo) {

    }

}


Here you can safely see if customerInfo contains the right entitlement and perform any logic that you require after a successful purchase.

 

Let me know if this helps!

Joan.
A
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  • AppDev777
  • Author
  • Dedicated Member
  • 17 replies
  • August 14, 2024

Then what is the other method for? Do they both get called? Can you explain all of this to me in detail please?

joan-cardona
RevenueCat Staff
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  • joan-cardona
  • RevenueCat Staff
  • 336 replies
  • Answer
  • August 19, 2024

Hi @AppDev777,

You can use one or another based on your needs since they have extra parameters. Our recommendation is to use the one I pasted before and is the one you can find in the sample apps. You shouldn’t implement both at the same time.

 

Let me know if this helps!

Joan.
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