restoreCompletedTransactions()
Asks the payment queue to restore previously completed purchases.
Declaration
func restoreCompletedTransactions()Mentioned in
Discussion
Use this method to restore finished transactions—that is, transactions for which you have already called finishTransaction(_:). You call this method in one of the following situations:
To install purchases on additional devices
To restore purchases for an application that the user deleted and reinstalled
When you create a new product to be sold in your store, you choose whether that product can be restored or not. See the In-App Purchase Programming Guide for more information.
The payment queue delivers a new transaction for each previously completed transaction that can be restored. Each transaction includes a copy of the original transaction.
After the transactions are delivered, the payment queue calls the observer’s paymentQueueRestoreCompletedTransactionsFinished(_:) method. If an error occurred while restoring transactions, the observer will be notified through its paymentQueue(_:restoreCompletedTransactionsFailedWithError:) method.
This method has no effect in the following situations:
All transactions are unfinished.
The user did not purchase anything that is restorable.
You tried to restore items that are not restorable, such as a non-renewing subscription or a consumable product.
Your app’s build version does not meet the guidelines for the
CFBundleVersionkey.