ios - 第一次更新事务，调用旧队列

Question

第一次，我尝试为所有交易进行此功能的订阅，但是在此之后，如果我尝试进行订阅，它将仅调用1状态。
此代码与Apple开发人员文档中的代码相同

- (void)paymentQueue:(SKPaymentQueue *)queue
 updatedTransactions:(NSArray *)transactions
{
    for (SKPaymentTransaction *transaction in transactions) {
             switch (transaction.transactionState) {
        case SKPaymentTransactionStatePurchasing:
                NSLog(@"purchasing in progress");
                break;
            case SKPaymentTransactionStateDeferred:
                NSLog(@"Stade deferred");
                break;
            case SKPaymentTransactionStateFailed:
                NSLog(@"State failed");
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                break;
            case SKPaymentTransactionStatePurchased:
                NSLog(@"Sucsess purchased");
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                break;
            case SKPaymentTransactionStateRestored:
                NSLog(@"restored");
                break;
            default:
                // For debugging
                NSLog(@"Unexpected transaction state %@",@(transaction.transactionState));
                break;
        }
    }
}

Answer 1

只为更新的交易调用updatedTransactions(请参阅Apple文档https://developer.apple.com/library/prerelease/ios/documentation/StoreKit/Reference/SKPaymentTransactionObserver_Protocol/)

交易-已更新的交易的数组。

但是，在应用程序启动或首次购买时，iOS会从SKPaymentQueue发送所有交易:defaultQueue。

https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/StoreKitGuide/Chapters/DeliverProduct.html:
终止并重新启动您的应用程序。启动后不久，Store Kit再次调用paymentQueue:updatedTransactions:方法；这次，让您的应用正常响应。验证您的应用正确交付了产品并完成了交易

因此，如果应用程序应查看所有交易，则应请求SKPaymentQueue:defaultQueue。