ios - Swift语言产品请求崩溃

Question

我有此代码可在应用程序购买中处理

import Foundation
import StoreKit

class iap: NSObject, SKProductsRequestDelegate,SKPaymentTransactionObserver {


    var productsArray = Array<SKProduct>()
    var product: SKProduct?

    override init()
    {
        super.init()

        if SKPaymentQueue.canMakePayments() {
             print("starting IAPS")
            let productIdentifiers = Set(["com.blabla.bla.pro"])
            let request = SKProductsRequest(productIdentifiers: productIdentifiers as Set<String>)
            request.delegate = self
            request.start()
        } else {
            print("please enable IAPS")
        }
    }

    // 1
    var list = [SKProduct]()
    var p = SKProduct()

    // 2
    func buyProduct() {
        print("buy " + p.productIdentifier)
        let pay = SKPayment(product: p)
        SKPaymentQueue.defaultQueue().addTransactionObserver(self)
        SKPaymentQueue.defaultQueue().addPayment(pay as SKPayment)
    }

    //3
    func productsRequest(request: SKProductsRequest, didReceiveResponse response: SKProductsResponse) {
        print("product request")
        let myProduct = response.products

        for product in myProduct {
            print("product added")
            print(product.productIdentifier)
            print(product.localizedTitle)
            print(product.localizedDescription)
            print(product.price)

            list.append(product )
        }


    }

    // 4
    func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue) {
        print("transactions restored")

        for transaction in queue.transactions {
            let t: SKPaymentTransaction = transaction

            let prodID = t.payment.productIdentifier as String

            switch prodID {
            case "com.blabla.bla.pro":
                print("pro upgrade update only basic stuff futher updates must be payed")


            default:
                print("IAP not setup")
            }

        }
    }

    // 5
    func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {
        print("add paymnet")

        for transaction:AnyObject in transactions {
            let trans = transaction as! SKPaymentTransaction
            print(trans.error)

            switch trans.transactionState {

            case .Purchased:
                print("buy, ok unlock iap here")
                print(p.productIdentifier)

                let prodID = p.productIdentifier as String
                switch prodID {
                case "com.blabla.bla.pro":
                    print("pro upgrade update only basic stuff futher updates must be payed")


                default:
                    print("IAP not setup")
                }

                queue.finishTransaction(trans)
                break;
            case .Failed:
                print("buy error")
                queue.finishTransaction(trans)
                break;
            default:
                print("default")
                break;

            }
        }
    }

    // 6
    func finishTransaction(trans:SKPaymentTransaction)
    {
        print("finish trans")
        SKPaymentQueue.defaultQueue().finishTransaction(trans)
    }

    //7
    func paymentQueue(queue: SKPaymentQueue, removedTransactions transactions: [SKPaymentTransaction])
    {
        print("remove trans");
    }

} 

当加载 View 时，我调用 iap 类:

class test: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()

        let inAppPurchase = iap()

    }
}

调用有效，但我唯一看到的是启动 iaps，然后它崩溃并出现此错误:消息已发送到已释放的实例。

这是我用僵尸登录时的结果。

我已经尝试了所有方法，但结果是这个错误。我该如何解决这个问题？

Answer 1

当您发出请求后超出范围时，您的 iap 类将被释放。将其存储在属性中以使其保持事件状态:

class test: UITabBarController {

    let inAppPurchase = iap()

    override func viewDidLoad() {
        super.viewDidLoad()
    }
}