SwapIt Frontend

Backend Code

This repository contains the code for the frontend of SwapIt. It is built using the cross platform react native tool together with the expo managed workflow so that we can use the various features that expo provides.

Notable Dependencies:

• Expo for native device features such as notifications
• Redux for state management
• React Navigation for navigating between screens
• React Native Elements for out-of-the-box UI components
• React Hook Form for form handling

Installation

1. Ensure you have node installed together with npm.

2. Download expo

Running the app

1. Create a .env file in the root of the app containing the REACT_APP_BACKEND_URL variable

   Env File Template:

   REACT_APP_BACKEND_URL = <url>
   

   • Option 1: Using development backend

     Development backend works with both simulator and physical device

   REACT_APP_BACKEND_URL = https://swapit-backend.herokuapp.com
   

   • Option 2: Using local backend

     Using local backend only works with SIMULATOR, physical device cannot communicate with local host server

   REACT_APP_BACKEND_URL = http://localhost:5000
   

   • Option 3: Using ngrok tunnelling

     This method solves the above problem allowing both physical device and simulator to communicate with the local backend

   1. Download ngrok

   2. Run the backend server

   3. Open up terminal and get the tunnel url from ngrok using ngrok http 5000 (use correct port number if you change the default port on the BE)

      

   4. ngrok url is not fixed and below is just an example

   REACT_APP_BACKEND_URL =  http://1dddc11ae286.ngrok.io
   

2. Install dependencies

npm install

3. Run the server on localhost

expo start

4. NOTE: you need to clear the cache and run whenever u change the ENV file. If there is unexpected behaviour, run the following command instead of expo start when starting to be safe

expo r -c

Opening the app

1. Physical Mobile Devices

• Download expo go app on the phone

• Simply scan the QR code created after running expo start. This should trigger the phone to open the app.

2. IOS Simulators

• Testing on IOS Simulators (Only works on macOS)

3. Android Simulators

• Testing on Android Simulators

Notifications

• Push Notifications only work on physical devices and not on simulators.

Deployment

Generate Build

IOS:

expo build:ios

Android:

expo build:android -t app-bundle

1. Download build file from expo
2. Upload build file to testflight / google play console
3. Make release