在一个应用中进行多个应用内购买

Question

我在同一页面上有一个包含多个应用内内容的应用。当我购买一个已显示已经购买的内容时，即使我不购买所有这些内容。

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
  {
     NSLog(@"[transactions count] : - %d ", [transactions count]);
    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];
            default:
                break;
        }
    }

 }

Answer 1

您需要在App购买中创建多个按钮，然后为它们分配不同的标签以识别它们。 这是示例代码：

- (void)purchaseProUpgrade{
    SKPayment *payment;
    if(btnTag ==0){
      payment = [SKPayment paymentWithProductIdentifier:kInAppPurchaseProUpgradeProductId1];  
    }
    else if(btnTag ==1){
      payment = [SKPayment paymentWithProductIdentifier:kInAppPurchaseProUpgradeProductId2];   
    }

    [[SKPaymentQueue defaultQueue] addPayment:payment];
} 

// saves a record of the transaction by storing the receipt to disk

-(void)recordTransaction:(SKPaymentTransaction *)transaction{  
   if(btnTag == 0){
            if ([transaction.payment.productIdentifier isEqualToString:kInAppPurchaseProUpgradeProductId1]){
        [[NSUserDefaults standardUserDefaults] setValue:transaction.transactionReceipt forKey:@"proUpgradeTransactionReceipt" ];
                [[NSUserDefaults standardUserDefaults] synchronize];
            }
    }
    else if(btnTag == 1){
        if ([transaction.payment.productIdentifier isEqualToString:kInAppPurchaseProUpgradeProductId2])
        {
            // save the transaction receipt to disk
            [[NSUserDefaults standardUserDefaults] setValue:transaction.transactionReceipt forKey:@"proUpgradeTransactionReceipt" ];
            [[NSUserDefaults standardUserDefaults] synchronize];
        }
    }

} 

-(void)finishTransaction:(SKPaymentTransaction *)transaction wasSuccessful:(BOOL)wasSuccessful{

    [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
   NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:transaction, @"transaction" , nil];
   if (wasSuccessful) {
        [[NSNotificationCenter defaultCenter] postNotificationName:kInAppPurchaseManagerTransactionSucceededNotification object:self userInfo:userInfo];
         if(btnTag == 0){
              //write ur code
         }
        else if(btnTag == 1){
             //write ur code
        }
}
    else
    {
        [[NSNotificationCenter defaultCenter] postNotificationName:kInAppPurchaseManagerTransactionFailedNotification object:self userInfo:userInfo];
    }
} 

这将解决您的问题...

Answer 2

请在此处查看此Rey Wenderlich最佳教程，其中介绍了使用多种产品完整实施应用内购买。