Learn REACT-NATIVE with Real Code Examples

React Native enables development of mobile apps using React components and JavaScript/TypeScript.

It uses a bridge to communicate between JavaScript and native modules for high-performance rendering.

Supports hot reloading and fast refresh for rapid development.

Has a large ecosystem of third-party libraries and UI components.

Allows integrating native code when needed for platform-specific features.

React-based component model

JS-to-native bridge

Built-in navigation via React Navigation

State management via Redux, MobX, or Context API

Styling with Flexbox and StyleSheet API

Component - reusable UI element

Props - inputs to components

State - internal data for components

StyleSheet - styling API for components

Navigation - moving between screens using React Navigation

App.js - main entry point

components/ - reusable components

screens/ - screen-level components

assets/ - images, fonts, icons

package.json - project dependencies

Define UI components

Manage state and props for interactivity

Add navigation for multiple screens

Integrate APIs or backend services

Test on iOS and Android devices/emulators

Beginner: single-screen app

Intermediate: multi-screen app with navigation

Advanced: API-integrated app with Redux/MobX state

Expert: custom native modules or animations

Enterprise: cross-platform apps with offline support, notifications, analytics

React Native vs Flutter - RN uses JS, easier for web devs; Flutter uses Dart and has custom rendering engine

React Native vs Xamarin - RN is JS-based; Xamarin uses C# and .NET

React Native vs Native iOS/Android - RN cross-platform, may need native bridges; native gives full performance and API access

React Native vs Ionic - RN near-native performance; Ionic web-based hybrid apps

React Native vs Kotlin Multiplatform - RN JS-based, faster iteration; Kotlin MP allows sharing business logic but UIs are platform-specific

2015 - Initial release by Facebook

2016 - 0.22 release with Android support

2017 - 0.46 with accessibility improvements

2019 - 0.61 with auto-linking for native modules

2025 - Latest stable release with Hermes engine, Fabric architecture, and TurboModules

Component - reusable UI element

Props - data passed to component

State - internal component data

Bridge - JS to native communication layer

StyleSheet - API for styling components