SixPack – Complete React Native Fitness App + Backend

Introduction

Welcome to the SixPack - Complete React Native Fitness App + Backend tutorial! This tutorial is designed to help you set up and use the SixPack app, a fully functional fitness app built using React Native and Node.js. The app includes a comprehensive workout routine, personalized goal setting, and progress tracking, making it a valuable tool for anyone looking to improve their physical fitness.

In this tutorial, we'll cover the following topics:

1. Setting up the React Native app on your device
2. Installing and configuring the backend using Node.js and Express
3. Understanding the app's architecture and how the frontend and backend interact
4. Customizing the app to fit your needs and preferences
5. Launching the app and exploring its features

By the end of this tutorial, you'll have a complete understanding of how to use the SixPack app and will be able to start creating your own fitness app with React Native and Node.js.

Step 1: Setting up the React Native App

To start using the SixPack app, you'll need to set up the React Native app on your device. Follow these steps:

1. Open the React Native command prompt and run the command npx react-native init SixPack to create a new React Native project.
2. Change into the project directory using the command cd SixPack.
3. Run the command npm install react-native-sqlite-storage to install the SQLite storage library, which the app uses to store workout data.
4. Open the android/app/src/main/java/com/reactnativedemo/SixPack.java file and add the following code to import the SQLite storage library:

   import android.database.sqlite.SQLiteDatabase;
   import com.reactnative SQLiteStorage;

5. Run the command npx react-native run-android to launch the app on your Android device or emulator.
6. Open the app on your device and navigate to the login screen. The app will prompt you to log in with a username and password. You can create a new account by tapping the "Create an account" button.

Step 2: Installing and Configuring the Backend

To set up the backend, you'll need to install and configure the Node.js and Express libraries. Follow these steps:

1. Open the backend folder and run the command npm install express body-parser to install the Express and body-parser libraries.
2. Create a new file called server.js in the backend folder and add the following code:

   
   const express = require('express');
   const bodyParser = require('body-parser');
   const app = express();

app.use(bodyParser.json()); app.use(bodyParser.urlencoded({ extended: true }));

const mysql = require('mysql'); const db = mysql.createConnection({ host: 'localhost', user: 'root', password: 'password', database: 'sixpack' });

app.post('/login', (req, res) => { const username = req.body.username; const password = req.body.password;

db.query('SELECT * FROM users WHERE username =? AND password =?', [username, password], (error, results) => { if (error) { res.status(500).send({ message: 'Error logging in' }); } else { res.send({ message: 'Logged in successfully' }); } }); });

app.listen(3000, () => { console.log('Server listening on port 3000'); });

3. Start the backend server by running the command `node server.js`.
4. The app will now be connected to the backend server, which will handle login requests and store workout data.

**Step 3: Understanding the App's Architecture**

The SixPack app has a simple architecture, consisting of a frontend written in React Native and a backend written in Node.js. The frontend sends requests to the backend, which then interacts with the database to perform CRUD (Create, Read, Update, Delete) operations.

Here's an overview of how the app works:

1. The user logs in to the app using the username and password.
2. The app sends a request to the backend to verify the user's credentials.
3. The backend checks the database to see if the username and password match. If they do, the user is logged in.
4. The app can now send requests to the backend to create, read, update, and delete workout data.
5. The backend interacts with the database to perform these operations.

**Step 4: Customizing the App**

The SixPack app is designed to be flexible and customizable. Here are a few ways you can customize the app:

1. Change the workout routine: You can modify the workout routine by adding or removing exercises, sets, and reps.
2. Create custom goals: You can create custom goals by specifying the number of workouts per week, the duration of each workout, and the number of sets and reps.
3. Track progress: You can track progress by viewing workout history, viewing goals, and receiving reminders.

**Step 5: Launching the App and Exploring its Features**

Now that you've set up the app, you can launch it and explore its features. Here's a quick tour of the app:

1. Launch the app on your device and log in with a username and password.
2. Navigate to the home screen, where you can view your workout schedule for the week.
3. Tap on a workout to view the exercises, sets, and reps.
4. Tap on an exercise to view the details and complete the workout.
5. View your workout history to track your progress.

By following this tutorial, you should now have a complete understanding of how to use the SixPack app. You can customize the app to fit your needs and preferences, and you can start creating your own fitness app with React Native and Node.js. Happy building!