- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
    for (SKPaymentTransaction *transaction in transactions)
    {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased:
                [self completeTransaction:transaction];
                break;
            case SKPaymentTransactionStateFailed:
                [self failedTransaction:transaction];
                break;
            case SKPaymentTransactionStateRestored:
                [self restoreTransaction:transaction];
                break;
            case SKPaymentTransactionStatePurchasing:
                NSLog(@"Purchasing...");
                break;
            default:
                break;
        }
    }
}

您自己的代码中有SKPaymentTransactionStateRestored的情况，该情况告诉您何时恢复产品.

you yourself have inside your code the case of SKPaymentTransactionStateRestored which tells when a product is being restored.