React Native Interview Questions and Answers
Practice React Native interview questions with clear answers. Covers components, navigation, APIs and real mobile app scenarios for freshers.
React Native Basics
Q. What is React Native?
React Native is a framework that allows developers to build mobile applications using JavaScript and React concepts.
Q. What is the difference between React and React Native?
React is used for building web applications, while React Native is used for building mobile apps using native components.
Q. What are components in React Native?
Components are reusable building blocks used to create user interfaces in mobile applications.
UI and Layout
Q. What are View and Text components?
View is used as a container for layout, while Text is used to display text content in React Native apps.
Q. How is styling done in React Native?
Styling is done using JavaScript objects similar to CSS but with camelCase properties.
Q. How does layout work in React Native?
React Native uses Flexbox to handle layout, alignment, and spacing of components.
Q. How do you make UI responsive in React Native?
Responsive design is achieved using Flexbox, percentage based layouts, and device dimensions.
State and Data
Q. What is state in React Native?
State is used to store and manage dynamic data within a component.
Q. What are props?
Props are used to pass data from one component to another.
Q. How do you fetch data from an API?
Data can be fetched using fetch or libraries like Axios to make network requests.
Q. What is async programming?
Async programming allows handling operations like API calls without blocking the app.
Device Features
Q. How do you handle permissions in React Native?
Permissions are handled using platform APIs or libraries to request access to features like camera or storage.
Q. What is AsyncStorage?
AsyncStorage is used to store simple key value data locally on the device.
Q. How do you improve performance in React Native apps?
Performance can be improved by optimizing rendering, using memoization, and reducing unnecessary re-renders.
Tips to Crack Technical Interviews
Simple preparation tips to improve your performance across technical interviews for fresher roles.
Understand Core Concepts
Be clear about components, props, and state handling in React Native.
Build Sample Apps
Create small apps to understand navigation and UI building.
Practice API Integration
Be comfortable with fetching and displaying data from APIs.
Explain App Flow
Be ready to describe how screens connect and data flows in your app.
Focus on Practical Use
Real understanding of features matters more than theory.
Stay Updated
Keep learning new updates and libraries in React Native ecosystem.
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