Skip to main content
Version: 6.0.0

ChargeGameCashByApple

Android​

public BackndReturnObject ChargeGameCashByGoogle(string receiptJson, string details);

iOS​

public BackndReturnObject ChargeGameCashByApple(string productId, string receiptToken, string details);

Parameters​

Android​

ValueTypeDescription
receiptJsonstringValue of Purchasing.PurchaseEventArgs.purchasedProduct.receipt
detailsstringAdditional details to be stored

iOS​

ValueTypeDescription
productIdstringID value of the purchased product
receiptTokenstringReceipt token issued after purchase
detailsstringAdditional details to be stored

Description​

After validating the receipt token, GameCash(The Backnd Coin) that matches the productId is provided.

To call the ChargeGameCashByApple or ChargeGameCashByGoogle method, you must first register the cash that matches the corresponding productId(product ID) in BACKND Console.
For more information on how to register cash, refer to Console guide - game cash management.

For the ChargeGameCashByApple or ChargeGameCashByGoogle method, the methods to be called in Android and iOS vary.
For iOS, productId is not included in the receipt token; therefore, you must enter the productId as the first parameter value.

Android Example​

Receipt verification using receiptJson obtained via Unity IAP service

Synchronous​

public Purchasing.PurchaseProcessingResult ProcessPurchase(Purchasing.PurchaseEventArgs args){
    Backnd.GameCash.ChargeGameCashByGoogle(args.purchasedProduct.receipt, "Big discount!");
    return PurchaseProcessingResult.Complete;
}

Asynchronous​

public Purchasing.PurchaseProcessingResult ProcessPurchase(Purchasing.PurchaseEventArgs args)
{
    Backnd.GameCash.ChargeGameCashByGoogle(args.purchasedProduct.receipt, "Big discount!", (callback) => 
    {
        // Post-process
    });
    return PurchaseProcessingResult.Complete;
}

iOS Example​

Receipt verification using the receipt token obtained via Unity IAP service

Synchronous​

public Purchasing.PurchaseProcessingResult ProcessPurchase(Purchasing.PurchaseEventArgs args){
    Backnd.GameCash.ChargeGameCashByApple("pId", args.purchasedProduct.receipt, "Big discount!");
    return PurchaseProcessingResult.Complete;
}

Asynchronous​

public Purchasing.PurchaseProcessingResult ProcessPurchase(Purchasing.PurchaseEventArgs args)
{
    Backnd.GameCash.ChargeGameCashByApple("pId", args.purchasedProduct.receipt, "Big discount!", (callback) => 
    {
        // Post-process
    });
    return PurchaseProcessingResult.Complete;
}

Return cases​

Success cases​

When the recharging is successful
statusCode : 201

returnValue : refer to GetReturnValuetoJSON

Error cases​

Expired receipt token
statusCode : 400
errorCode : BadParameterException

Receipt of refund/cancellation
statusCode : 402
errorCode : AbnormalReceipt

When a product not in BACKND Console was purchased
statusCode : 404
errorCode : NotFoundException

Already used receipt token
statusCode : 409
errorCode : UsedReceipt

GetReturnValuetoJSON​

{ 
    usedTBC: 450, // Amount of recharged TBC
    amountTBC: 947.047 // User's total TBC after recharging
}