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Implementing In-App Purchases in React Native
In-app purchases are a way for mobile apps to receive payments from users, either through subscription or one-time payment to unlock specific features or content. In this tutorial, we’ll explore how to implement in-app purchases in React Native, covering both the frontend and backend aspects.
App Overview
The app we’ll be building is a subscription-based app that requires users to subscribe using in-app purchases to unlock premium features. Here’s what the app will look like on Android and iOS:
[Insert images of the app on Android and iOS]
Setting Up the Project
Create a new bare Expo project and install the required dependencies, including expo-in-app-purchases, react-native-start, react-native-simple-toast, react-native-paper, axios, and expo-secure-store.
Setting Up the Server
Create a new Laravel project and install the required dependencies, including Laravel Sanctum and the Google Cloud PubSub library. Update the .env file with your database credentials and migrate the database.
Setting Up In-App Purchases for Android
Create a subscription on the Google Play Console and set up notifications for subscriptions. Add license testers to test out in-app purchases.
Setting Up In-App Purchases for iOS
Create an auto-renewable subscription on App Store Connect and add it to your app. Update the ios/RNIAPSample.xcworkspace file to add the In-App Purchases capability.
Building the App
Create the login screen, account screen, and locked screen components. Implement the login functionality using Axios and Expo Secure Store. Use the expo-in-app-purchases module to handle in-app purchases.
Handling Subscriptions in Android
Save the purchase token and order ID in the database when the app makes a request to the /subscribe route. Listen for notifications sent by Google Cloud PubSub and update the user’s subscription data.
Handling Subscriptions in iOS
Verify the transaction receipt with Apple’s servers using the verifySubscription method. Update the user’s subscription data if the receipt is valid.
Returning Data for Locked Content
Create a controller to return data for locked content. This is optional, but it’s required to implement the in-app purchases functionality.
Running the App
Make the server accessible to the internet using Valet or ngrok. Update the src/config.js file with your HTTPS ng and URL’t’t
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Conclusion and Next Steps
In this tutorial, we learned how to implement in-app purchases in React Native. However, there are still a few things we haven’t covered, such as restoring subscriptions, handling cancellations or pausing subscriptions, and testing the implementation.
You can find the project source code in this GitHub repo.