I'm doing a game with SpriteKit and I work with SKScene for different scenes within the game.
I made a class to make purchases in-App works well with a button, but gives errors with others, I explain:
On the cover there is a button that when pressed it runs the window of buying without problems all the times that I want, but if I change to another scene and I have another buy button associated with the same kind of purchase, if I press it gives error and it falls to application.
How can I solve the problem?
This is my class to buy:
import Foundation
import StoreKit
class BuyApp: NSObject, SKProductsRequestDelegate, SKPaymentTransactionObserver{
var list = [SKProduct]()
var p = SKProduct()
let idEnableActividades = "id.prod.unico"
let buy = Buy() //Base de datos con compras
override init() {
super.init()
if(SKPaymentQueue.canMakePayments()) {
print("IAP is enabled, loading")
let productID:NSSet = NSSet(objects: self.idEnableActividades)
let request: SKProductsRequest = SKProductsRequest(productIdentifiers: productID as! Set<String>)
request.delegate = self
request.start()
} else {
print("please enable IAPS")
}
}
func productsRequest(request: SKProductsRequest, didReceiveResponse response: SKProductsResponse) {
let myProduct = response.products
for product in myProduct {
/*
print(product.productIdentifier)
print(product.localizedTitle)
print(product.localizedDescription)
print(product.price)
print(product.priceLocale)
*/
list.append(product)
}
}
func buyCompleteVersion() {
print("comprar versión completa")
buy.showPurshases()
if list.count > 0 {
for product in list {
print(product)
let prodID = product.productIdentifier
if(prodID == self.idEnableActividades) {
p = product
buyProduct()
break;
}
}
} else{
print("else de buyCompleteVersion")
}
}
func saveBuy() {
print("Guardando compra en DB.....")
buy.savePurchase()
}
func buyProduct() {
print("comprando " + p.productIdentifier)
let pay = SKPayment(product: p)
SKPaymentQueue.defaultQueue().addTransactionObserver(self)
SKPaymentQueue.defaultQueue().addPayment(pay as SKPayment)
}
func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue) {
print("transactions restored")
}
func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
print("add paymnet")
if transactions.count > 0 {
for transaction:AnyObject in transactions {
if let trans = transaction as? SKPaymentTransaction {
print("error: \(trans.error)")
switch trans.transactionState {
case .Purchased:
print(" productIdentifier: \(p.productIdentifier)")
let prodID = p.productIdentifier as String
switch prodID {
case self.idEnableActividades:
saveBuy()
default:
print("IAP not setup")
}
queue.finishTransaction(trans)
break;
case .Failed:
print("buy error")
queue.finishTransaction(trans)
break;
default:
print("default")
break;
}
}
}
}
}
func finishTransaction(trans:SKPaymentTransaction)
{
print("finish trans")
SKPaymentQueue.defaultQueue().finishTransaction(trans)
}
func paymentQueue(queue: SKPaymentQueue, removedTransactions transactions: [SKPaymentTransaction])
{
if transactions.count > 0 {
for transaction in transactions {
SKPaymentQueue.defaultQueue().finishTransaction(transaction)
print("removieno")
}
} else{
print("removieno 0")
}
print("remove trans");
}
func request(request: SKRequest, didFailWithError error: NSError) {
print("“Print the NSError \(error)")
}
}