iOS IAP paymentQueue：updatedTransactions

Question

SKPaymentTransactionObserver.paymentQueue：updatedTransactionsは、トランザクションの配列を返します。支払いをする際に、どの取引が私が行った支払いであるかをどのように知ることができますか？支払いをすると常に1つの取引が返されますか？

一方、このオブザーバー関数は、トランザクションを復元するときにも呼び出されます。ですから、updatedTransactionsを処理するベストプラクティスは何ですか？

私のサブスクリプション製品は、自動更新サブスクリプションです。

Answer 1

トランザクションのループを繰り返し、各トランザクションをチェックします。ここ

public func paymentQueue(_ queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) { 
     for transaction in transactions { 
      switch (transaction.transactionState) { 
      case .purchased: 
       completeTransaction(transaction: transaction) 
       break 
      case .failed: 
       failedTransaction(transaction: transaction) 
       break 
      case .restored: 
       restoreTransaction(transaction: transaction) 
       break 
      case .deferred: 
       // TODO show user that is waiting for approval 

       break 
      case .purchasing: 
       break 
      } 
     } 
    } 

    private func completeTransaction(transaction: SKPaymentTransaction) { 

     print("completeTransaction...") 

     deliverPurchaseForIdentifier(identifier: transaction.payment.productIdentifier) 
     SKPaymentQueue.default().finishTransaction(transaction) 

    } 

    private func restoreTransaction(transaction: SKPaymentTransaction) { 


     guard let productIdentifier = transaction.original?.payment.productIdentifier else { return } 

     print("restoreTransaction... \(productIdentifier)") 


     deliverPurchaseForIdentifier(identifier: productIdentifier) 
     SKPaymentQueue.default().finishTransaction(transaction) 
    } 

    private func failedTransaction(transaction: SKPaymentTransaction) { 

     if let error = transaction.error as NSError? { 
      if error.domain == SKErrorDomain { 
       // handle all possible errors 
       switch (error.code) { 
       case SKError.unknown.rawValue: 
        print("Unknown error") 

        BaseViewController.currentViewController?.Alert(title: MFErrors.purchaseFaild.messgae.title, msg: MFErrors.purchaseFaild.messgae.body) 

       case SKError.clientInvalid.rawValue: 
        print("client is not allowed to issue the request") 

        BaseViewController.currentViewController?.Alert(title: MFErrors.accountNotAllowedToMakePurchase.messgae.title, msg: MFErrors.accountNotAllowedToMakePurchase.messgae.body) 

       case SKError.paymentCancelled.rawValue: 
        print("user cancelled the request") 

       case SKError.paymentInvalid.rawValue: 
        print("purchase identifier was invalid") 

       case SKError.paymentNotAllowed.rawValue: 
        print("this device is not allowed to make the payment") 
        BaseViewController.currentViewController?.Alert(title: MFErrors.purchaseFaild.messgae.title, msg: MFErrors.purchaseFaild.messgae.body) 
       default: 
        break; 
       } 
      } 

      ProgressViewManager.shared.hide() 
     } 

     SKPaymentQueue.default().finishTransaction(transaction) 
    } 

    private func deliverPurchaseForIdentifier(identifier: String?) { 

     guard let identifier = identifier else { return } 

     //Check if this transactions is a subscription 
     //SubscriptionsProductIdentifiers is an array of subscriptions product ids you sent to the app store to get SKProducts 

     //If subscription 
     if SubscriptionsProductIdentifiers.contains(identifier) { 


     }else{ 
      //If non-consumable, consumables etc... 

     } 


    } 

は私の前の回答では、完全な店長です：すべてのこれらの取引は、同じ製品である場合に How to handle shouldAddStorePayment for In-App Purchases in iOS 11?