[3] React Native make your first program| Build your first program in React Native tutorials

Summary

This video covers the basics of creating and running a React Native app. It walks through steps like using the 'npx react-native init' command to create the app, running the app on an emulator, and understanding key code components. The instructor also highlights useful extensions like ES7 Redux snippets to simplify development. Additionally, an interview question comparing React and React Native is introduced. By the end, viewers will have built and run their first React Native app and learned how to use helpful tools for faster coding.

Takeaways

• 💻 The video focuses on building your first React Native app.
• 📥 The process starts by creating a React Native app using the command 'npx react-native@latest init'.
• 🖥️ If the terminal isn't installed on your PC, you can download it from the Microsoft Store.
• 📂 After the app is created, open it in VS Code by typing 'code .' in the terminal.
• 📦 Navigate into the project directory using 'cd' and start the server with 'npm start'.
• 📱 Use the 'a' command to run the app on an Android emulator.
• 🛠️ The app file is 'App.tsx', which is initially written in TypeScript, but can be converted to JavaScript (JSX).
• 🔧 Install the 'ES7 Redux React Native Snippets' extension to simplify writing components.
• 🔄 Make changes to 'App.tsx' and use 'R' to reload the app and view updates in the emulator.
• 📝 One interview question discussed: the difference between React and React Native.

Q & A

Question 1: What is the first step to create a React Native app?

The first step to create a React Native app is to use the command `npx react-native@latest init`, which initializes the app by downloading a template and setting up the project files.

Question 2: What should you do if you don't see the terminal option on your PC?

If you don't see the terminal option on your PC, you should open the Microsoft Store, search for 'Terminal', and download the 'Microsoft Terminal' app.

Question 3: How do you open the newly created React Native project in VS Code?

To open the React Native project in VS Code, type `code .` in the terminal after navigating to the project folder. This command opens the project in VS Code.

Question 4: How do you start the React Native server?

To start the React Native server, navigate to the project folder using `cd` and then run `npm start` in the terminal.

Question 5: What is the next step after starting the server to run the app on an emulator?

After starting the server, type `a` in the terminal to run the app on the Android emulator. This command starts the emulator and installs the app.

Question 6: What is the significance of the App.tsx file?

The App.tsx file is the main component of the React Native app. It contains the core code and UI, and can be edited to modify the app's interface and functionality.

Question 7: How can you simplify your workflow in React Native using an extension?

You can simplify your workflow by installing the 'ES7 Redux Native Snippets' extension in VS Code. This extension provides useful code snippets to quickly generate common React Native components and structures.

Question 8: How do you reload the app and see your code changes?

To reload the app and see code changes, double-tap 'R' on your keyboard. This triggers a live reload of the app in the emulator.

Question 9: What is the difference between React and React Native?

React is a JavaScript library for building web interfaces, while React Native is a framework that allows developers to build mobile applications using React, enabling the use of JavaScript to develop native mobile apps.

Question 10: What is the benefit of using JavaScript instead of TypeScript in the context of this course?

The instructor suggests using JavaScript instead of TypeScript to simplify the learning process, as TypeScript adds an additional layer of complexity with its static typing, which may not be necessary for beginners.