SKPaymentTransactionObserver

Declaration

protocol SKPaymentTransactionObserver : NSObjectProtocol

Mentioned in

• Testing In-App Purchases in Xcode
• Promoting In-App Purchases
• Processing a transaction
• Setting up the transaction observer for the payment queue
• Testing transaction observer code
• Choosing a receipt validation technique
• Supporting Family Sharing in your app
• Testing resubscribing from the subscriptions page

Overview

Observers of SKPaymentQueue objects implement the methods of this protocol.

The system calls an observer when the queue updates or removes transactions. An observer needs to process all successful transactions, unlock the functionality the user purchases, and then finish the transaction by calling the payment queue’s finishTransaction(_:) method.

Topics

Handling transactions

• paymentQueue(_:updatedTransactions:)
• paymentQueue(_:removedTransactions:)

Restoring transactions

• paymentQueue(_:restoreCompletedTransactionsFailedWithError:)
• paymentQueueRestoreCompletedTransactionsFinished(_:)

Handling promoted in-app purchases

• Promoting In-App Purchases
• paymentQueue(_:shouldAddStorePayment:for:)

Revoking entitlements

• paymentQueue(_:didRevokeEntitlementsForProductIdentifiers:)

Changing the storefront

• paymentQueueDidChangeStorefront(_:)

Handling download actions

• paymentQueue(_:updatedDownloads:)

Relationships

Inherits From

• NSObjectProtocol

See Also

Essentials

• Setting up the transaction observer for the payment queue
• Offering, completing, and restoring in-app purchases
• SKPaymentQueue
• SKPaymentQueueDelegate
• SKRequest