iphone - 获取购买商品列表，inApp Purchase iPhone

Question

我正在为我的 iOS 应用程序实现应用内购买。 Apple 因未恢复购买的产品而拒绝了我的二进制文件。在我的应用程序中，一旦用户点击产品图标，如果项目被锁定，他/她将定向到 inApp 购买流程，否则产品将被打开。没有可见的购买按钮。现在苹果说要提供恢复按钮？谁能告诉我如何处理这个？我试过了

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

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

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

}

在应用程序启动时，paymentQueueRestoreCompletedTransactionsFinished 方法从未被调用，因此我可以获得已购买商品的列表，然后直接通知用户是否已购买。

Answer 1

如何设置[SKPaymentQueue defaultQueue]的委托(delegate)？我猜你已经做了像这样的 smt:

[[SKPaymentQueue defaultQueue] addTransactionObserver:self];

之后 [[SKPaymentQueue defaultQueue] restoreCompletedTransactions]; 应该会触发以下方法。所以案例 SKPaymentTransactionStateRestored 是你实现它的地方:

-(void) paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
    for (SKPaymentTransaction * transaction in transactions) {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased:                
                ...
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                break;
            case SKPaymentTransactionStateFailed:                
                ...
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
                break;
            case SKPaymentTransactionStateRestored:                
                ...
                [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
            default:
                break;
        }
    };
}

你可以看看这个教程，在它的最后对恢复进行了更详细的解释。 http://www.raywenderlich.com/21081/introduction-to-in-app-purchases-in-ios-6-tutorial