恢复时，事务状态为SKPaymentTransactionStatePurchased

Question

每次启动应用程序时，我都会调用还原方法：

[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];

我检查事件中的事务状态更改：

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions {
    for (SKPaymentTransaction *transaction in transactions) {
        switch (transaction.transactionState) {
            case SKPaymentTransactionStatePurchased:
                NSLog (@"SKPaymentTransactionStatePurchased");
                break;
            case SKPaymentTransactionStateFailed:
                NSLog (@"SKPaymentTransactionStateFailed");
                break;
            case SKPaymentTransactionStateRestored:
                NSLog (@"SKPaymentTransactionStateRestored");
                break;              
            default:
                break;
        }
    }
}

问题是，日志总是显示＆＃34; SKPaymentTransactionStateRestored＆＃34;虽然我没有任何新购买。此问题是仅在沙箱中发生还是如何解决？