description

This is an offline-first react native app example for iOS and Android. When you get back online, it automatically updates any changes to the server. This happens every time you reopen the app with an internet connection, making sure everything you did offline is saved and synced. It uses TanStack Query v5. This app was tested with a release ipa on device and an Express server deployed on AWS. Use an iPad or tablet, as it is not optimized for mobile devices. On iOS network changes are not detected when using a simulator, only a device.

client configuration

• npx expo prebuild to get the ios and android folders to run the project on the simulator
• cd ios && pod install
• yarn && yarn start

local server configuration

• cd server && npm install
• npm run dev

running local server on device

• run ifconfig on mac and use ip address for EXPO_PUBLIC_BASE_URL_DEVELOPMENT(see .env.example) to connect to express

network interceptor (optional for testing on device in development)

To intercept calls to and from your Express server using Charles Proxy, you need to set up your development environment and mobile device to route traffic through Charles. Here's a basic guide on how to do this:

1. Set Up Charles Proxy:

   • Install Charles Proxy on your development machine.
   • Open Charles and go to the Proxy menu, select Proxy Settings, and note down the port number (usually 8888).

2. Configure Your Mobile Device:

   • Connect your mobile device to the same network as your development machine.
   • Go to your device's Wi-Fi settings and modify the network configuration to use a manual proxy.
   • Enter the IP address of your development machine and the port number on which Charles is running (e.g., 8888).

3. Trust Charles SSL Certificate on Your Device:

   • On your mobile device, open a browser and visit chls.pro/ssl to download the Charles SSL certificate.
   • Install the downloaded certificate. On iOS, you might also need to enable full trust for the certificate in the settings.

4. Enable SSL Proxying in Charles:

   • In Charles, right-click on your Express server’s host and choose “Enable SSL Proxying”.
   • If you don’t see your host, first make a request from your app, and it should appear in the Charles session list.

5. Test Your Setup:

   • Use your app to make a request to your Express server.
   • Charles should now capture the request and response, allowing you to view or modify the data.

serverless deploy (optional)

1. Install Serverless globally npm install -g serverless

2. Configure AWS credentials for Serverless serverless config credentials --provider aws --key ACCESS_KEY --secret SECRET_KEY

3. Install npm dependencies npm install

4. Compile TypeScript to JavaScript and output to 'dist' folder npx tsc --outDir dist

5. Deploy to AWS Lambda serverless deploy

6. Update EXPO_PUBLIC_BASE_URL_PRODUCTION in .env

demo

https://youtu.be/-dojurE_G-Q

roadmap

• Online CRUD
• Offline CRUD
• Testing RNTL