当应用内购买和目标 c 不存在交易时无法恢复交易

Question

我有一个正在开发应用内购买的应用。整个购买过程正在运行，当使用 Apple ID 进行有效购买时，恢复也正在运行。但是，当用户点击“恢复购买”UIButton 时，如果没有使用登录的 Apple 帐户进行购买活动，我想处理这种情况。

在我的AppDelegate 中，我有：

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{    
    for (SKPaymentTransaction *transaction in transactions)
    {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased:
            {
                // unlock the full version
                [self unlockFullVersion:transaction];
                [[SKPaymentQueue defaultQueue]finishTransaction:transaction];
                [self saveReceipts];
                break;
            }

            case SKPaymentTransactionStatePurchasing:
            {
                // currently purchasing
                break;
            }
            case SKPaymentTransactionStateRestored:
            {
                [self restoreTransaction:transaction]; 
                [[SKPaymentQueue defaultQueue]finishTransaction:transaction];

                break;
            }
            case SKPaymentTransactionStateFailed:
            {
                // it didn't work
                break;
            }
            case SKPaymentTransactionStateDeferred:
            {
                // deferred
                break;
            }
        }
    }

}

- (void)restoreTransaction:(SKPaymentTransaction *)transaction
{
    if (transaction)
    {

        if ([transaction.payment.productIdentifier isEqualToString:@"com.company.Unlimited"])
        {
            [[NSNotificationCenter defaultCenter] postNotificationName:@"CheckProVersion" object:self userInfo:nil];
            [[NSUserDefaults standardUserDefaults]setBool:YES forKey:@"IAPSuccessful"];


            [[NSUserDefaults standardUserDefaults]synchronize];
        }

            UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Restore Successful" message:@"Your restore was successful." delegate:nil cancelButtonTitle:@"Thanks" otherButtonTitles:nil, nil];
        [alertView show];
    }
    else
    {
        NSLog(@"The transaction does not exist");

        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Restore Unsuccessful" message:@"Your Apple ID doesn't have an active purchase for upgrading to Envylope Pro. " delegate:nil cancelButtonTitle:@"Thanks" otherButtonTitles:nil, nil];
        [alertView show];
    }
}

在这种特殊情况下，如果事务不存在，则不会调用 restoreTransaction 方法中的第二个 UIAlertView。

我已经设置了一个断点，但它永远不会被调用。我已经设置了SKPaymentTransactionStateFailed 案例的断点，我看到了，当我没有积极购买时，它会受到打击。但是，这实际上会从AppDelegate 中执行我想要的（如UIAlertView），我只希望它在单独的InAppPurchaseViewController 中运行。

问题

从这个InAppPurchaseViewController（距离几个屏幕），我有一个恢复UIButton，我想要在单击按钮期间执行测试以查看此Apple ID 的交易存在。这样的事情可能吗？

更新

在SKPaymentTransactionStateFailed，我放了：

        NSString * const SKErrorDomain;
        NSLog(@"The error is %@", SKErrorDomain);

我收到(null) 作为错误。

Answer 1

尝试添加此方法，它处理没有购买可恢复的情况：

- (void)paymentQueueRestoreCompletedTransactionsFinished:(SKPaymentQueue *)queue {

   if (queue.transactions.count == 0){
     NSLog(@"The transaction does not exist");

     UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Restore Unsuccessful" message:@"Your Apple ID doesn't have an active purchase for upgrading to Envylope Pro. " delegate:nil cancelButtonTitle:@"Thanks" otherButtonTitles:nil, nil];
     [alertView show];
 }
}