Hi, thanks for reading my question. I need help with some odd behaviour with product.purchase() not triggering a confirmation dialog after a subscription has expired and trying to purchase it again. Seeing this in iOS 16.2 and 15.7.2 (haven't tried any other versions) on actual devices, not in simulator.
I'm using a sandbox user on the sandbox environment (not using the local store kit config file testing option).
Using a newly created sandbox user, first subscription purchase goes through just fine, dialog box pops up, login with sandbox user, get confirmation of purchase and then Transaction.currentEntitlements has one item as expected. It auto renews for 12 times (each time Transaction.currentEntitlements contains the correct results) and then expires, as expected for sandbox. Transaction.currentEntitlements is then also empty, as expected. All good so far.
Now I want to test purchasing it again...Call product.purchase() again to renew/start a new subscription and nothing happens, no confirm purchase dialog box pops up at all. The purchase function simply exits BUT returns success (as in the following gets called) but in self.updatePurchasedProducts(), Transaction.currentEntitlements is empty.
case let .success(.verified(transaction)):
// Successful purchase
await transaction.finish()
await self.updatePurchasedProducts()
if I instead go to Settings->App Store->Sandbox User-> Manage Subscriptions and renew the subscription there, instead of in my app, then Transaction.currentEntitlements has a new entry and all is good again.
Alternatively, if I create yet another new sandbox user and logout of the old one I was using, I am once again able to purchase from within the app, so .purchase() once again works as normal.
Is there something I am missing about expired subscriptions and trying to purchase them again in the app? Is this a sandbox issue and in production I'll have no problem?
The sandbox user has purchasing enabled in Settings->App Store.
I've also tried calling AppStore.sync() (which is in my "Restore Purchase" button) before calling product.purchase() after the subscription stops renewing, expires and this issue comes up, doesn't resolve it.
Also have a less important question, the initial call to product.purchase(), the one that works as expected, has a bit of a delay before the confirmation dialog pops up, a few seconds, which will probably result in the user clicking the buy button again thinking it didn't work. Is a bit of a delay normal for sandbox? Will it be ok in production? When it fails, and I have to renew in Settings->AppStore->Sandbox user, there's also a bit of a delay after I return to my app, 5-15 or so seconds, before the transaction observer fires and currentEntitlements is checked again, is there a way to reduce this delay?
Thank you! Colin
@MainActor
class IAPManager: NSObject, ObservableObject {
// removed other functions.....
func purchase(_ product: Product) async throws {
let result = try await product.purchase()
switch result {
case let .success(.verified(transaction)):
// Successful purchase
await transaction.finish()
await self.updatePurchasedProducts()
case let .success(.unverified(_, error)):
break
case .pending:
break
case .userCancelled:
break
@unknown default:
break
}
}
func updatePurchasedProducts() async {
for await result in Transaction.currentEntitlements {
guard case .verified(let transaction) = result else {
continue
}
if transaction.revocationDate == nil {
self.purchasedProductIDs.insert(transaction.productID)
} else {
self.purchasedProductIDs.remove(transaction.productID)
}
}
}
}
