In app purchase in iOS if press cancel button then nothing happen - ios

Question

I am doing simple in app purchase application. At the time of product load I simply restore all my previous purchase, so I start loading indicator when I start loading product but in some device I already used inapp id so every time I load the product in that device some type of alert come and if I press cancel then nothing happen and my loading indicator goes infinite.
Here I have screenshot too.
extension IAPHelper: SKPaymentTransactionObserver {
public func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
for transaction in transactions {
if productIdentifiers.contains(transaction.payment.productIdentifier) {
switch (transaction.transactionState) {
case .purchased:
complete(transaction: transaction)
break
case .failed:
fail(transaction: transaction)
break
case .restored:
restore(transaction: transaction)
break
case .deferred:
print("denied")
break
case .purchasing:
break
}
}
}
if productsRestoreCompletionHandler != nil
{
productsRestoreCompletionHandler = nil
}
}
private func complete(transaction: SKPaymentTransaction) {
print("complete...")
// deliverPurchaseNotificationFor(identifier: transaction.payment.productIdentifier)
SKPaymentQueue.default().finishTransaction(transaction)
productsPurchaseCompletionHandler?(true, transaction)
if productsPurchaseCompletionHandler != nil
{
productsPurchaseCompletionHandler = nil
}
}
private func restore(transaction: SKPaymentTransaction) {
guard let productIdentifier = transaction.original?.payment.productIdentifier else { return }
print("restore... \(productIdentifier)")
// deliverPurchaseNotificationFor(identifier: productIdentifier)
SKPaymentQueue.default().finishTransaction(transaction)
productsRestoreCompletionHandler?(true, transaction)
}
private func fail(transaction: SKPaymentTransaction) {
print("fail...")
if let transactionError = transaction.error as? NSError {
if transactionError.code != SKError.paymentCancelled.rawValue {
print("Transaction Error: \(transaction.error?.localizedDescription)")
}
}
SKPaymentQueue.default().finishTransaction(transaction)
if productsRestoreCompletionHandler != nil
{
productsRestoreCompletionHandler?(false, transaction)
productsRestoreCompletionHandler = nil
}
if productsPurchaseCompletionHandler != nil
{
productsPurchaseCompletionHandler?(false, transaction)
productsPurchaseCompletionHandler = nil
}
}
private func deliverPurchaseNotificationFor(identifier: String?) {
guard let identifier = identifier else { return }
purchasedProductIdentifiers.insert(identifier)
// UserDefaults.standard.set(true, forKey: identifier)
// UserDefaults.standard.synchronize()
// NotificationCenter.default.post(name: NSNotification.Name(rawValue: IAPHelper.IAPHelperPurchaseNotification), object: identifier)
}
}
When product load
//MARK:
//MARK: load the product
func getProduct()
{
let userData = getUserDataFromFile()
obj = IAPHelper(productIds: NetFishProducts.productIdentifiers)
if checkInternetConnection()
{
SINGLETON.startLoadingActivity(self.view)
obj.requestProducts { (isSuccess, arrProduct) in
if isSuccess == true
{
self.setProduct = Set<SKProduct>(arrProduct! as [SKProduct])
self.btnSignup.isUserInteractionEnabled = true
for p in arrProduct! {
print("Found product: \(p.productIdentifier) \(p.localizedTitle) \(p.price.floatValue)")
if p.productIdentifier == NetFishProducts.monthlyPlan
{
self.setupLblMonth(withMothPrice: "\(p.price.floatValue)")
}
else
{
self.setupLblYear(withYearPrice: "\(p.price.floatValue)")
}
}
self.obj.requestRestoreProducts(completionHandler: { (isSuccess, transation) in
SINGLETON.stopLoadingActivity(self.view)
if isSuccess == true
{
let orignalTI = transation?.original?.transactionIdentifier
let userEmail = transation?.payment.applicationUsername
print("orignalTI:\(orignalTI)")
print("username:\(userEmail)")
if userEmail != nil && userData?.userEmail != userEmail
{
self.btnSignup.isUserInteractionEnabled = false
self.showAlertToUser("Information", MsgDesc: "You are login with different appstore account so login with correct appstore account")
return
}
}
else
{
self.btnSignup.isUserInteractionEnabled = false
}
},withUserName: (userData?.userEmail)!)
}
else
{
SINGLETON.stopLoadingActivity(self.view)
self.btnSignup.isUserInteractionEnabled = false
}
}
}
}