如何從恢復的交易中獲得產品標識符？

Question

我已設法恢復應用內交易並從原始交易中獲取交易標識符，但如何識別交易中購買的產品？ 是否可以獲取以前購買的應用內商品的產品標識符？

Answer 1

，如果你的意思是你要檢查所購買的物品已經用戶買..是的，你可以像這樣

- (void) checkPurchasedItems 
{ 
    [[SKPaymentQueue defaultQueue] restoreCompletedTransactions]; 
}//You Call This Function 

//Then this delegate Function Will be fired 
- (void) paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue 
{ 
purchasedItemIDs = [[NSMutableArray alloc] init]; 

NSLog(@"received restored transactions: %i", queue.transactions.count); 
for (SKPaymentTransaction *transaction in queue.transactions) 
{ 
    NSString *productID = transaction.payment.productIdentifier; 
    [purchasedItemIDs addObject:productID]; 
} 
} 

Answer 2

SWIFT版本：

一旦你獲得了代表

func paymentQueueRestoreCompletedTransactionsFinished(queue: SKPaymentQueue!) { 
    var productIds = [String]() 
    for transcation in queue.transactions{ 
     if let productID = transcation.payment?.productIdentifier{ 
     productIds.append(productID) 
     } 
    }