In this step, you'll add some basic routing to your app. Based on the user's login status, you'll redirect them to the login page or the home page.
Home page
Create a new file views/Home.jsx and add the following stub code to it. We'll update this page later to display the ideas posted by other users and allow the user to post their ideas.
import React from 'react';
import { View, Text } from 'react-native';
import { useUser } from '../contexts/UserContext';
export default function HomeScreen() {
const user = useUser();
console.log(user.current);
return (
<View>
<Text>
Welcome, {user.current ? user.current.email : 'Please login'}
</Text>
</View>
);
}
Basic routing
To handle basic routing, you can use the react-navigation library. This router also consumes the UserContext to determine if the user is logged in or not to redirect the user automatically.
Create a file lib/Router.jsx and add the following code to it.
import { NavigationContainer } from '@react-navigation/native';
import LoginScreen from '../views/Login';
import HomeScreen from '../views/Home';
import { createNativeStackNavigator } from '@react-navigation/native-stack';
import { useUser } from '../contexts/UserContext';
const Stack = createNativeStackNavigator();
export function Router() {
const user = useUser();
return (
<NavigationContainer>
<Stack.Navigator>
{user.current == null ? (
<Stack.Screen
name="Login"
component={LoginScreen}
options={{ title: 'Login' }}
/>
) : (
<Stack.Screen
name="Home"
component={HomeScreen}
options={{ title: 'Home' }}
/>
)}
</Stack.Navigator>
</NavigationContainer>
);
}
We'll display this router in the App.js file.
import { StyleSheet, Text, View } from 'react-native';
import { UserProvider } from './contexts/UserContext';
import { Router } from './lib/Router';
export default function App() {
return (
<UserProvider>
<Router />
</UserProvider >
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
});
Test the routing
Now, if you run the app, you should see the login page. If you create a new account, you should be logged in and redirected to the home page.
Run the app using the following command.
npm run start