Book Image

Apple Pay Essentials

By : Ernest Bruce
Book Image

Apple Pay Essentials

By: Ernest Bruce

Overview of this book

Apple Pay, one of the most talked about offerings of the latest iOS 9 release, is a digital wallet and electronic payment system developed by Apple Inc. Paying in stores or within apps has never been easier or safer. Gone are the days of searching for your wallet, and the wasted moments finding the right card! Now you can use your credit cards and rewards cards with just a touch. It allows payment to merchants, using Near field Communication (NFC), and within iOS apps. Implementing Apple Pay within apps for payment is a bit tricky, but our book solves this problem for you. Whether you are a brand new iOS app developer or a seasoned expert, this book arms you with necessary skills to successfully implement Apple Pay in your online-payment workflow. Whether you are a brand new iOS app developer or a seasoned expert, this book arms you with the necessary skills to successfully implement Apple Pay. We start off by teaching you how to obtain the certificates necessary to encrypt customers’ payment information. We will use Xcode and Objective C for the interface and Node.js for server side code. You will then learn how to determine whether the customer can use Apple Pay, and how to create payment requests. You will come to grips with designing a payment-processor program to interact with the payment gateway. Finally, we take a look at a business-focused view of Apple Pay protocols and classes. By the end of this book, you will be able to build a fully functional Apple Pay-integrated iOS app
Table of Contents (13 chapters)

Payment sheet user event protocol

This section describes the protocol used by the payment sheet to communicate with its delegate.

The PKPaymentAuthorizationViewControllerDelegate protocol

The PKPaymentAuthorizationViewControllerDelegate protocol specifies the set of methods that the payment sheet uses to communicate events to its delegate (which you can implement to respond to calls to these methods). The following sections identify the actions that the user can perform in the payment sheet and the delegate methods called when the user performs them.

The user chooses a payment card

The user can switch payment cards in the payment sheet (that is, if the user added more than one payment card to Apple Pay on the device).

-paymentAuthorizationViewController:didSelectPaymentMethod: completion:

This is called when the user chooses a payment card. If the payment card affects the payment request's summary items (for example, if you provide a discount to use a store card), you must compute the summary...