Day 2: Setting Up the Mobile App Framework #MobileFramework #ReactNativeSetup

On Day 2, we’ll focus on setting up the basic structure for your deepfake face swap app using React Native. This includes creating a home screen, adding navigation, and preparing placeholders for features like image uploads and camera capture.


1. Setting Up the Project Structure

Step 1: Create a New Project

If you haven’t already initialized the project, do so now:

expo init deepfake-face-swap
cd deepfake-face-swap

Choose the blank template when prompted.


Step 2: Install Required Libraries

Install the following dependencies for our app:

  • React Navigation: For navigating between screens.
  • Expo Image Picker: To upload images from the gallery or capture photos with the camera.

Run these commands:

npm install @react-navigation/native react-native-screens react-native-safe-area-context react-native-gesture-handler react-native-reanimated react-native-stack
expo install expo-image-picker

2. Setting Up Navigation

Step 1: Add a Navigation Container

Create a basic navigation system for switching between screens (e.g., Home, Camera, Face Swap). Update App.js:

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

const Stack = createStackNavigator();

export default function App() {
    return (
        <NavigationContainer>
            <Stack.Navigator initialRouteName="Home">
                <Stack.Screen name="Home" component={HomeScreen} />
                <Stack.Screen name="Camera" component={CameraScreen} />
                <Stack.Screen name="FaceSwap" component={FaceSwapScreen} />
            </Stack.Navigator>
        </NavigationContainer>
    );
}

3. Creating the Home Screen

Step 1: Create HomeScreen.js

Create the HomeScreen.js file in the src/screens/ folder:

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

export default function HomeScreen({ navigation }) {
    return (
        <View style={styles.container}>
            <Text style={styles.title}>Deepfake Face Swap App</Text>
            <Button
                title="Capture Image"
                onPress={() => navigation.navigate('Camera')}
            />
            <Button
                title="Upload Image"
                onPress={() => navigation.navigate('FaceSwap')}
            />
        </View>
    );
}

const styles = StyleSheet.create({
    container: { flex: 1, justifyContent: 'center', alignItems: 'center' },
    title: { fontSize: 24, fontWeight: 'bold', marginBottom: 20 },
});

4. Adding Camera and Face Swap Placeholders

Step 1: Create CameraScreen.js

Add the placeholder for capturing an image:

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

export default function CameraScreen() {
    return (
        <View style={styles.container}>
            <Text style={styles.text}>Camera Screen Placeholder</Text>
        </View>
    );
}

const styles = StyleSheet.create({
    container: { flex: 1, justifyContent: 'center', alignItems: 'center' },
    text: { fontSize: 20 },
});

Step 2: Create FaceSwapScreen.js

Add the placeholder for face-swapping functionality:

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

export default function FaceSwapScreen() {
    return (
        <View style={styles.container}>
            <Text style={styles.text}>Face Swap Screen Placeholder</Text>
        </View>
    );
}

const styles = StyleSheet.create({
    container: { flex: 1, justifyContent: 'center', alignItems: 'center' },
    text: { fontSize: 20 },
});

5. Testing the App

Step 1: Start the Development Server

Run the app:

expo start

Step 2: Test Navigation

  • Ensure the home screen is displayed by default.
  • Test the Capture Image button to navigate to the Camera Screen.
  • Test the Upload Image button to navigate to the Face Swap Screen.
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6. Next Steps

On Day 3, we’ll:

  • Implement functionality for face detection using pre-trained models.
  • Integrate an image picker to upload or capture images for face swapping.

References and Links:

SEO Keywords: React Native app setup, face swap app tutorial, navigation in React Native, building deepfake apps, Expo app development.

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