How do I implement authentication in a React Native navigation drawer?

How do I implement authentication in a React Native navigation drawer?

To implement authentication in a React Native navigation drawer, you can use React Navigation along with a state management solution like Redux or Context API to manage user authentication state.

Can you provide a code example for that?

Sure! First, set up your navigation drawer using React Navigation. Then, create a context for authentication and wrap your app with it. Here's a basic example:

import React, { createContext, useState } from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createDrawerNavigator } from '@react-navigation/drawer';

const AuthContext = createContext();

const Drawer = createDrawerNavigator();

const App = () => {
  const [user, setUser] = useState(null);

  return (
    <AuthContext.Provider value={{ user, setUser }}>
      <NavigationContainer>
        <Drawer.Navigator>
          {/* Your screens go here */}
        </Drawer.Navigator>
      </NavigationContainer>
    </AuthContext.Provider>
  );
};

This sets up the context for managing authentication.

What about handling login and logout?

For handling login and logout, you can create functions within your context to update the user state. For example:

const login = (userData) => {
  setUser(userData);
};

const logout = () => {
  setUser(null);
};

You can call these functions from your login and logout components.