It would help to know the exact error and the exact line where the error occurs.
Where do you call purchase() ?
public func purchase(product: Product, completion: @escaping () - Void) {
guard SKPaymentQueue.canMakePayments() else {
return
}
guard let storeKitProduct = products.first(where: { $0.productIdentifier == product.rawValue }) else {
return
}
Utilities.purchaseFailed = Bool()
let paymentRequest = SKPayment(product: storeKitProduct)
SKPaymentQueue.default().add(self)
SKPaymentQueue.default().add(paymentRequest)
completion()
}
public func restore(completion: @escaping () - Void) {
SKPaymentQueue.default().restoreCompletedTransactions()
completion()
}
func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
transactions.forEach({ transaction in
switch transaction.transactionState {
case .purchasing:
//No op
break
case .purchased:
handlePurchase(transaction.payment.productIdentifier)
Utilities.purchaseFailed = false
SKPaymentQueue.default().finishTransaction(transaction)
break
case .failed:
Utilities.purchaseFailed = true
Utilities.restoredPurchases = false
SKPaymentQueue.default().finishTransaction(transaction)
break
case .restored:
print("purchases restored")
handlePurchase(transaction.payment.productIdentifier)
Utilities.restoredPurchases = true
SKPaymentQueue.default().finishTransaction(transaction)
break
case .deferred:
break
@unknown default:
break
}
})
}
private func handlePurchase(_ id: String) {
UserDefaults.standard.setValue(true, forKey: id)
print("id = \(id)")
if id == "JokesRUs.RemoveAds" {
Utilities.ShowAds = false
}
if id == "JokesRUs.Icons.Summer" {
print("summer bought")
IconChange.setIconPurchased = true
IconChange.summerIconUnlocked = true
IconChange.numUnlocked = IconChange.numUnlocked + 1
UserDefaults.standard.setValue(IconChange.numUnlocked + 1, forKey: "numUnlocked")
UserDefaults.standard.setValue(true, forKey: "summerIconUnlocked")
}
if id == "JokesRUs.Icons.Taco" {
print("taco bought")
IconChange.setIconPurchased = true
IconChange.tacoIconUnlocked = true
IconChange.numUnlocked = IconChange.numUnlocked + 1
UserDefaults.standard.setValue(IconChange.numUnlocked + 1, forKey: "numUnlocked")
UserDefaults.standard.setValue(true, forKey: "tacoIconUnlocked")
}
if id == "JokesRUs.Icons.Pizza" {
print("pizza bought")
IconChange.setIconPurchased = true
IconChange.pizzaIconUnlocked = true
IconChange.numUnlocked = IconChange.numUnlocked + 1
UserDefaults.standard.setValue(IconChange.numUnlocked + 1, forKey: "numUnlocked")
UserDefaults.standard.setValue(true, forKey: "pizzaIconUnlocked")
}
if id == "JokesRUs.Icons.HotDog" {
print("hotdog bought")
IconChange.setIconPurchased = true
IconChange.hotdogIconUnlocked = true
IconChange.numUnlocked = IconChange.numUnlocked + 1
UserDefaults.standard.setValue(IconChange.numUnlocked + 1, forKey: "numUnlocked")
UserDefaults.standard.setValue(true, forKey: "hotdogIconUnlocked")
}
if id == "JokesRUs.Icons.Hamburger" {
print("hamburger bought")
IconChange.setIconPurchased = true
IconChange.hamburgerIconUnlocked = true
IconChange.numUnlocked = IconChange.numUnlocked + 1
UserDefaults.standard.setValue(IconChange.numUnlocked + 1, forKey: "numUnlocked")
UserDefaults.standard.setValue(true, forKey: "hamburgerIconUnlocked")
}
if id == "JokesRUs.Icons.Doughnut" {
print("doughnut bought")
IconChange.setIconPurchased = true
IconChange.doughnutIconUnlocked = true
IconChange.numUnlocked = IconChange.numUnlocked + 1
UserDefaults.standard.setValue(IconChange.numUnlocked + 1, forKey: "numUnlocked")
UserDefaults.standard.setValue(true, forKey: "doughnutIconUnlocked")
}
}
