How can I implement JWT authentication in a React Native app?

How can I implement JWT authentication in a React Native app?

To implement JWT authentication in a React Native app, you can follow these steps: 1. Set up a backend server to issue JWTs. 2. Use a library like Axios to make API calls. 3. Store the JWT in AsyncStorage after login. 4. Include the JWT in the Authorization header for subsequent requests.

What libraries do I need for this?

You will need libraries like Axios for making HTTP requests, and AsyncStorage for storing the JWT securely.

Can you show me a code example?

Sure! Here's a simple example:

import axios from 'axios';
import AsyncStorage from '@react-native-async-storage/async-storage';

const login = async (username, password) => {
  const response = await axios.post('https://yourapi.com/login', { username, password });
  const { token } = response.data;
  await AsyncStorage.setItem('jwt', token);
};

This code logs in a user and stores the JWT.

How do I handle token expiration?

You can handle token expiration by checking the token's validity before making requests. If it's expired, redirect the user to the login screen.