Why Build Custom Solutions Over Libraries in React Native?
While libraries simplify integrations in React Native, they often come with limitations:
Deprecated Libraries: Updates and support can cease, leaving projects vulnerable.
Feature Limitations: Libraries may not meet all use cases.
Flexibility: Custom solutions offer more control for unique requirements.
Custom native modules ensure scalability and precision. Here’s how to integrate Apple Pay natively in React Native for iOS.
Why Use Apple Pay in React Native?
Apple Pay enables secure, seamless payments with encrypted card details. A React Native integration aligns with Apple’s security standards while enhancing the user experience.
Note: Before proceeding, you must create a Merchant ID and configure your project in Xcode. Follow Apple’s official documentation to complete prerequisites.
Steps to Create a Custom Apple Pay Module
1. Create a Swift Module
Add an ApplePayModule.swift file to your iOS project:
Payment Request Parameters: Define merchant ID, supported networks, and payment details.
Can Make Payments: Check device capability with PKPaymentAuthorizationController.canMakePayments().
Request Payment: Present the Apple Pay sheet and handle authorization using React Native callbacks (RCTPromiseResolveBlock/RCTPromiseRejectBlock).
2. Bridge the Module
Use ApplePayModule.m to bridge Swift and React Native, exposing methods like canMakePayments and requestPayment to JavaScript.
3. Create a Hook
The useApplePay hook consolidates Apple Pay operations, feel free to add currencies and countries.
Key Functions:
canMakePayments: Validates device compatibility.
requestPayment: Handles the payment flow.
handleApplePay: Combines the above for a seamless user experience.
Centralized logic for checking availability and managing payments.
Comprehensive error handling.
4. Use the Custom Module
Here’s a React Native component example leveraging the module:
Conclusion
Custom native modules are ideal when libraries fall short or become deprecated. A native Apple Pay integration:
Ensures a secure payment flow.
Aligns with Apple’s standards.
Offers control and flexibility for unique project needs.
This approach equips you with a robust, scalable solution for seamless payments in React Native apps.
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