Handling Navigation in React Native with Expo and React Navigation

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Navigation is a crucial part of any mobile application, allowing users to move between different screens seamlessly. In this guide, we will explore how to set up and use React Navigation in a React Native Expo project.

1. Installing React Navigation

Before using React Navigation, you need to install the required dependencies. Open your terminal and run the following commands:

npm install @react-navigation/native

After that, install the required dependencies for React Navigation:

npm install react-native-screens react-native-safe-area-context react-native-gesture-handler react-native-reanimated react-native-vector-icons

Next, install the stack navigator:

npm install @react-navigation/stack

Finally, make sure to add the following to your babel.config.js to enable Reanimated support:

module.exports = {
  presets: ['babel-preset-expo'],
  plugins: ['react-native-reanimated/plugin'],
};

2. Setting Up Navigation

To start using navigation, wrap your app in a NavigationContainer in App.js:

import React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';
import HomeScreen from './screens/HomeScreen';
import DetailsScreen from './screens/DetailsScreen';

const Stack = createStackNavigator();

export default function App() {
  return (
    <NavigationContainer>
      <Stack.Navigator>
        <Stack.Screen name="Home" component={HomeScreen} />
        <Stack.Screen name="Details" component={DetailsScreen} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}

3. Creating Screens

Let's create two screens: HomeScreen.js and DetailsScreen.js.

HomeScreen.js

import React from 'react';
import { View, Text, Button } from 'react-native';

export default function HomeScreen({ navigation }) {
  return (
    <View>
      <Text>Welcome to the Home Screen!</Text>
      <Button title="Go to Details" onPress={() => navigation.navigate('Details')} />
    </View>
  );
}

DetailsScreen.js

import React from 'react';
import { View, Text } from 'react-native';

export default function DetailsScreen() {
  return (
    <View>
      <Text>This is the Details Screen</Text>
    </View>
  );
}

4. Navigating with Parameters

You can pass parameters when navigating between screens. Modify the HomeScreen.js file:

<Button
  title="Go to Details with Data"
  onPress={() => navigation.navigate('Details', { message: 'Hello from Home!' })}
/>

Now, modify DetailsScreen.js to receive and display the parameter:

export default function DetailsScreen({ route }) {
  return (
    <View>
      <Text>{route.params?.message}</Text>
    </View>
  );
}

5. Conclusion

With React Navigation, handling navigation in your React Native Expo app becomes simple and efficient. Whether you're building a small or large application, mastering navigation is essential. Try implementing different types of navigators like Tab Navigator and Drawer Navigator to enhance user experience! 🚀

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