PayPal 付款卡住 "processing"

Question

我已经实施了最新的 PayPal API，但每次我尝试 运行 通过 PayPal 的沙箱付款时，付款都会卡在 "Processing." 上，完全被难住了。谢谢！

-(void)payWithPayPal {
    NSString *shortDescription = [NSString stringWithFormat:@"%i %@", [Global sharedInstance].currentOrder.itemQuantity, [Global sharedInstance].currentOrder.boozeBrand];
    NSDecimalNumber *paymentDecimal = [NSDecimalNumber decimalNumberWithString:[NSString stringWithFormat:@"%.02f", [Global sharedInstance].currentOrder.itemPrice]];
    NSString *sku = [NSString stringWithFormat:@"DBAR-%i", [Global sharedInstance].currentOrder.orderNumber];

    NSString *name = [NSString stringWithFormat:@"%@", [Global sharedInstance].currentOrder.boozeBrand];
    PayPalItem *item = [PayPalItem itemWithName:name
                                withQuantity:[Global sharedInstance].currentOrder.itemQuantity
                                       withPrice:paymentDecimal
                                    withCurrency:@"USD"
                                         withSku:sku];
    float priceFloat = [item.price floatValue];
    float totalFloat = priceFloat * item.quantity;
    NSDecimalNumber *total = [NSDecimalNumber decimalNumberWithString:[NSString stringWithFormat:@"%.02f", totalFloat]];

    PayPalPayment *payment = [[PayPalPayment alloc] init];
    payment.amount = total;
    payment.currencyCode = @"USD";
    payment.shortDescription = shortDescription;
    payment.items = nil;  // if not including multiple items, then leave payment.items as nil
    payment.paymentDetails = nil; // if not including payment details, then leave payment.paymentDetails as nil

    if (!payment.processable) {NSLog(@"Payment not processable.");}

    // Update payPalConfig re accepting credit cards.

    PayPalPaymentViewController *paymentViewController = [[PayPalPaymentViewController alloc] initWithPayment:payment configuration:self.payPalConfiguration delegate:self];
    [self presentViewController:paymentViewController animated:YES completion:nil];
}


#pragma mark - PayPalDelegate

-(void)payPalPaymentViewController:(PayPalPaymentViewController *)paymentViewController willCompletePayment:(PayPalPayment *)completedPayment completionBlock:(PayPalPaymentDelegateCompletionBlock)completionBlock {
    NSLog(@"Payment processing.");
    //Stuck on this forever - this is what I'm trying to get past
}

-(void)payPalPaymentViewController:(PayPalPaymentViewController *)paymentViewController didCompletePayment:(PayPalPayment *)completedPayment {
    //Never gets here
}

Answer 1

你的issue在willCompletePayment的完成块中，你需要在return那个完成块中处理完之后的完成块 调用 didCompletePayment

来自 Paypal 代码文档

Your code MUST finish by calling the completionBlock.
completionBlock Block to execute when your processing is done.

所以你的代码会像

- (void)payPalPaymentViewController:(nonnull PayPalPaymentViewController *)paymentViewController
                willCompletePayment:(nonnull PayPalPayment *)completedPayment
                    completionBlock:(nonnull PayPalPaymentDelegateCompletionBlock)completionBlock {
    //do all the code you want
    completionBlock();
}

在你写完这个完成块后，它会转到didCompletePayment，可以是这样的：

- (void)payPalPaymentViewController:(PayPalPaymentViewController *)paymentViewController didCompletePayment:(PayPalPayment *)completedPayment {
  NSLog(@"PayPal Payment Success!");
  self.resultText = [completedPayment description];
  [self showSuccess];
  [self dismissViewControllerAnimated:YES completion:nil];
}

另一种选择 查看Paypal例子的代码，willCompletePayment方法并不是必须要实现的，可以跳过这个方法，直接写didCompletePayment

这样你的代码可以是这样的：

- (void)payPalPaymentViewController:(PayPalPaymentViewController *)paymentViewController didCompletePayment:(PayPalPayment *)completedPayment {
  NSLog(@"PayPal Payment Success!");
  self.resultText = [completedPayment description];
  [self showSuccess];

  [self sendCompletedPaymentToServer:completedPayment]; // Payment was processed successfully; send to your server for verification and fulfillment
  [self dismissViewControllerAnimated:YES completion:nil];
}

来自 Paypal

didCompletePayment 的代码文档

Your code MAY deal with the completedPayment, if it did not already do so within your optional payPalPaymentViewController:willCompletePayment:completionBlock: method.

通过使用该方法，您不需要调用 willCompletePayment 方法，您将不会遇到您遇到的问题。