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Building and Deployment with Expo

Building and deploying applications with Expo streamlines the process, making it accessible even for developers new to mobile app development. This guide provides step-by-step instructions on how to effectively build and deploy your apps using Expo, including tips for leveraging continuous integration for native code and automating testing and deployment to app stores.

Step 1: Setting Up Your Expo Project

  1. Initialize your project: Start by creating a new Expo project if you haven't already. Use the command expo init YourProjectName to create a new project.
  2. Choose a template: Expo offers various templates to get started. Choose one that suits your project needs.

Step 2: Developing Your App

  1. Develop your app: Utilize the Expo SDK and your chosen template to build your app. Expo's live reloading feature allows you to see changes in real-time as you develop.
  2. Test on devices: Use the Expo Go app to test your app on real devices. This is crucial for ensuring your app works well across all devices.

Step 3: Building Native Code

  1. Prepare for building: Ensure your app is ready for building. Check all configurations and remove any development-only code.
  2. Build with Expo: Use the command expo build:android or expo build:ios to start the build process. Expo will handle the complexity of building your native code.

Step 4: Continuous Integration and Deployment

  1. Set up continuous integration: Integrate your project with a CI/CD platform like GitHub Actions or CircleCI. This allows for automatic building and testing of your app.
  2. Automate deployment: Use Expo's EAS (Expo Application Services) to automate the deployment of your app to the app stores. This includes managing certificates and provisioning profiles.

Step 5: Publishing Updates

  1. Publish updates with Expo: Use the command expo publish to update your app. Expo's OTA (Over-The-Air) updates allow you to push updates to your users without going through the app store approval process again.

By following these steps, you can efficiently build and deploy your app with Expo, taking advantage of its powerful features to simplify the development process.

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