Apple Pay - Doing the Programming

The coding is fairly simple and it is like below

#import

We have to include the PassKit Framework and do the import below

Add a button and on the action do the below

-(IBAction) payButtonPressed:(id)sender

{

    if([PKPaymentAuthorizationViewController canMakePayments])

    {

        PKPaymentRequest *request = [[PKPaymentRequest alloc] init];

        request.countryCode = @"US";

        request.currencyCode = @"USD";

        request.supportedNetworks = @[PKPaymentNetworkAmex, PKPaymentNetworkMasterCard, PKPaymentNetworkVisa];

        request.merchantCapabilities = PKMerchantCapabilityEMV;

        request.merchantIdentifier = @"merchant.com.mportal.applepaytest";

        PKPaymentSummaryItem *amount = [PKPaymentSummaryItem summaryItemWithLabel:@"amount" amount:[NSDecimalNumber decimalNumberWithString:@"0.99"]];

        PKPaymentSummaryItem *tax = [PKPaymentSummaryItem summaryItemWithLabel:@"tax" amount:[NSDecimalNumber decimalNumberWithString:@"1.00"]];

        PKPaymentSummaryItem *total = [PKPaymentSummaryItem summaryItemWithLabel:@"Grand Total" amount:[NSDecimalNumber decimalNumberWithString:@"1.99"]];

        request.paymentSummaryItems = @[amount, tax, total];

        

        self.paymentPane = [[PKPaymentAuthorizationViewController alloc] initWithPaymentRequest:request];

        if(self.paymentPane != nil)

        {

            paymentPane.delegate = self;

            [self presentViewController:paymentPane animated:TRUE completion:nil];

        }

        else

        {

            [self showMessage:@"Error while creating payment pane"];

        }

    }

    else

    {

        [self showMessage:@"Apple Pay Not supported"];

    }

    

}

Below are the call backs for the 

// Sent to the delegate after the user has acted on the payment request.  The application

// should inspect the payment to determine whether the payment request was authorized.

//

// If the application requested a shipping address then the full addresses is now part of the payment.

//

// The delegate must call completion with an appropriate authorization status, as may be determined

// by submitting the payment credential to a processing gateway for payment authorization.

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller

                       didAuthorizePayment:(PKPayment *)payment

                                completion:(void (^)(PKPaymentAuthorizationStatus status))completion

{

    [self showMessage:@"didAuthorizePayment called back"];

}

// Sent to the delegate when payment authorization is finished.  This may occur when

// the user cancels the request, or after the PKPaymentAuthorizationStatus parameter of the

// paymentAuthorizationViewController:didAuthorizePayment:completion: has been shown to the user.

//

// The delegate is responsible for dismissing the view controller in this method.

- (void)paymentAuthorizationViewControllerDidFinish:(PKPaymentAuthorizationViewController *)controller

{

    [self showMessage:@"paymentAuthorizationViewControllerDidFinish called back"];

}

/ Sent when the user has selected a new shipping method.  The delegate should determine

// shipping costs based on the shipping method and either the shipping address supplied in the original

// PKPaymentRequest or the address fragment provided by the last call to paymentAuthorizationViewController:

// didSelectShippingAddress:completion:.

//

// The delegate must invoke the completion block with an updated array of PKPaymentSummaryItem objects.

//

// The delegate will receive no further callbacks except paymentAuthorizationViewControllerDidFinish:

// until it has invoked the completion block.

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller

                   didSelectShippingMethod:(PKShippingMethod *)shippingMethod

                                completion:(void (^)(PKPaymentAuthorizationStatus status, NSArray *summaryItems))completion

{

    [self showMessage:@"paymentAuthorizationViewController called back"];

}

// Sent when the user has selected a new shipping address.  The delegate should inspect the

// address and must invoke the completion block with an updated array of PKPaymentSummaryItem objects.

//

// The delegate will receive no further callbacks except paymentAuthorizationViewControllerDidFinish:

// until it has invoked the completion block.

- (void)paymentAuthorizationViewController:(PKPaymentAuthorizationViewController *)controller

                  didSelectShippingAddress:(ABRecordRef)address

                                completion:(void (^)(PKPaymentAuthorizationStatus status, NSArray *shippingMethods, NSArray *summaryItems))completion

{

    [self showMessage:@"didSelectShippingAddress called back"];

}

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