用户取消IAP iOS SDK时如何更新UI

Question

我已经在ios SDK中成功实现了IAP 。

但是问题是当用户单击“还原购买”按钮时，我通过以下代码启动还原：

 [[SKPaymentQueue defaultQueue] addTransactionObserver:self];
[[SKPaymentQueue defaultQueue] restoreCompletedTransactions];

而且我还编写了以下代码来处理和启动purchase ：

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions{
for(SKPaymentTransaction *transaction in transactions){
    switch(transaction.transactionState){

        case SKPaymentTransactionStatePurchasing: NSLog(@"Transaction state -> Purchasing");
            //called when the user is in the process of purchasing, do not add any of your own code here.
            break;

        case SKPaymentTransactionStatePurchased:
            //this is called when the user has successfully purchased the package 
              [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
             [SVProgressHUD dismiss];
            [self doRemoveAds]; //you can add your code for what you want to happen when the user buys the purchase here, for this tutorial we use removing ads


            break;
        case SKPaymentTransactionStateRestored:
             [SVProgressHUD dismiss];
            NSLog(@"Transaction state -> Restored");
            //add the same code as you did from SKPaymentTransactionStatePurchased here
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
            break;
        case SKPaymentTransactionStateFailed:
             [SVProgressHUD dismiss];

            //called when the transaction does not finish
            if(transaction.error.code == SKErrorPaymentCancelled){
                [SVProgressHUD dismiss];

                NSLog(@"Transaction state -> Cancelled");
                //the user cancelled the payment ;(
            }
            [[SKPaymentQueue defaultQueue] finishTransaction:transaction];
            break;
    }
}
 }

当我选择还原时，会出现一个对话框，要求输入密码。 当我取消它时，进度hud不会隐藏。

我怎样才能做到这一点。 用户在过程之间取消购买时如何更新UI。

这是图片。

当我使用委托方法时立即编辑

- (void)paymentQueue:(SKPaymentQueue *)queue   restoreCompletedTransactionsFailedWithError:(NSError *)error
{
 [SVProgressHUD dismiss];

}

当它要求输入密码时， SVProgressHUD隐藏。 无论我按“取消”还是“确定”。 如何处理。

以及当用户输入正确的密码时如何更新UI并继续购买。

Answer 1

您的代表应实现此方法：

- (void)paymentQueue:(SKPaymentQueue *)queue restoreCompletedTransactionsFailedWithError:(NSError *)error

在这种情况下的错误将指示取消操作。