# React Native: Desarrollo completo de una aplicación móvil en 2026

> Guía completa para desarrollar aplicaciones móviles iOS y Android con React Native. Desde la configuración inicial hasta la publicación en tiendas, todos los fundamentos necesarios.

- Published: 2026-01-10
- Updated: 2026-04-06
- Author: SharpSkill
- Tags: react native, mobile development, javascript, ios, android
- Reading time: 15 min

---

React Native permite construir aplicaciones móviles nativas para iOS y Android con una sola base de código en JavaScript. Mantenido por Meta y utilizado en aplicaciones como Instagram, Facebook y Discord, este framework ofrece una experiencia de desarrollo ágil sin sacrificar el rendimiento nativo.

> **Why React Native in 2026?**
>
> With the new architecture (Fabric and TurboModules) now stable, React Native delivers near-native performance while maintaining web development productivity. Over 40% of top 500 apps use React Native.

## Development Environment Setup

Antes de comenzar, es indispensable instalar las herramientas necesarias. React Native ofrece dos enfoques: Expo (recomendado para quienes inician) y React Native CLI (para mayor control sobre la configuración nativa).

```bash
# setup.sh
# Node.js installation (LTS version recommended)
# Check installed version
node --version  # >= 18.x required
npm --version   # >= 9.x required

# Install Expo CLI tool globally
npm install -g expo-cli

# Create a new project with Expo
npx create-expo-app@latest MyApp --template blank-typescript

# Navigate to the project
cd MyApp

# Start the development server
npx expo start
```

Expo simplifica considerablemente el desarrollo al encargarse automáticamente de la configuración nativa. Para probar la aplicación, basta con instalar Expo Go en un smartphone y escanear el código QR que aparece en la terminal.

```bash
# structure.sh
# Generated project structure
MyApp/
├── App.tsx              # Application entry point
├── app.json             # Expo configuration
├── package.json         # Dependencies
├── tsconfig.json        # TypeScript configuration
├── babel.config.js      # Babel configuration
└── assets/              # Images and resources
    ├── icon.png
    └── splash.png
```

## Core React Native Components

React Native proporciona componentes nativos que reemplazan los elementos HTML tradicionales. Cada componente se traduce directamente a su equivalente nativo en iOS o Android.

```tsx
// App.tsx
import React from 'react';
import {
  View,
  Text,
  StyleSheet,
  SafeAreaView,
  StatusBar
} from 'react-native';

// Main application component
export default function App() {
  return (
    // SafeAreaView prevents overlap with status bar
    <SafeAreaView style={styles.container}>
      {/* StatusBar configures system bar appearance */}
      <StatusBar barStyle="dark-content" />

      {/* View is the equivalent of div */}
      <View style={styles.header}>
        {/* Text is required to display text */}
        <Text style={styles.title}>Welcome to MyApp</Text>
        <Text style={styles.subtitle}>
          A React Native application
        </Text>
      </View>
    </SafeAreaView>
  );
}

// StyleSheet.create optimizes styles for native
const styles = StyleSheet.create({
  container: {
    flex: 1,                    // Takes all available space
    backgroundColor: '#ffffff',
  },
  header: {
    padding: 20,
    alignItems: 'center',       // Centers horizontally
    justifyContent: 'center',   // Centers vertically
  },
  title: {
    fontSize: 24,
    fontWeight: 'bold',
    color: '#1a1a1a',
    marginBottom: 8,
  },
  subtitle: {
    fontSize: 16,
    color: '#666666',
  },
});
```

> **Flexbox by Default**
>
> React Native uses Flexbox with `flexDirection: 'column'` by default (unlike web which uses `row`). This difference is important for layout.

## Handling User Interactions

Las interacciones táctiles se gestionan mediante componentes especializados. Cada tipo de interacción cuenta con un componente dedicado, lo que permite optimizar el rendimiento según el caso de uso.

```tsx
// components/InteractiveButton.tsx
import React, { useState } from 'react';
import {
  TouchableOpacity,
  TouchableHighlight,
  Pressable,
  Text,
  StyleSheet,
  View,
} from 'react-native';

// Button component with different interaction styles
export function InteractiveButton() {
  const [count, setCount] = useState(0);

  return (
    <View style={styles.container}>
      {/* TouchableOpacity reduces opacity on touch */}
      <TouchableOpacity
        style={styles.button}
        activeOpacity={0.7}
        onPress={() => setCount(c => c + 1)}
      >
        <Text style={styles.buttonText}>
          Counter: {count}
        </Text>
      </TouchableOpacity>

      {/* Pressable offers more control over states */}
      <Pressable
        style={({ pressed }) => [
          styles.button,
          styles.pressableButton,
          pressed && styles.buttonPressed,
        ]}
        onPress={() => console.log('Pressed!')}
        onLongPress={() => console.log('Long press!')}
      >
        {({ pressed }) => (
          <Text style={styles.buttonText}>
            {pressed ? 'Pressed!' : 'Press here'}
          </Text>
        )}
      </Pressable>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    gap: 16,
    padding: 20,
  },
  button: {
    backgroundColor: '#007AFF',
    paddingVertical: 14,
    paddingHorizontal: 28,
    borderRadius: 10,
    alignItems: 'center',
  },
  pressableButton: {
    backgroundColor: '#34C759',
  },
  buttonPressed: {
    backgroundColor: '#2DA44E',
    transform: [{ scale: 0.98 }],
  },
  buttonText: {
    color: '#ffffff',
    fontSize: 16,
    fontWeight: '600',
  },
});
```

## Screen Navigation with React Navigation

La navegación es un pilar de cualquier aplicación móvil. React Navigation es la solución estándar del ecosistema, con distintos tipos de navegación adaptados a los patrones habituales de las plataformas móviles.

```bash
# install-navigation.sh
# Installing navigation dependencies
npx expo install @react-navigation/native
npx expo install @react-navigation/native-stack
npx expo install react-native-screens react-native-safe-area-context
```

```tsx
// App.tsx
import React from 'react';
import { NavigationContainer } from '@react-navigation/native';
import { createNativeStackNavigator } from '@react-navigation/native-stack';

// Screen imports
import { HomeScreen } from './screens/HomeScreen';
import { DetailScreen } from './screens/DetailScreen';
import { ProfileScreen } from './screens/ProfileScreen';

// Type definition for TypeScript navigation
export type RootStackParamList = {
  Home: undefined;                    // No parameters
  Detail: { itemId: number; title: string };  // Required parameters
  Profile: { userId?: string };       // Optional parameter
};

// Creating typed navigator
const Stack = createNativeStackNavigator<RootStackParamList>();

export default function App() {
  return (
    // NavigationContainer manages navigation state
    <NavigationContainer>
      <Stack.Navigator
        initialRouteName="Home"
        screenOptions={{
          headerStyle: { backgroundColor: '#007AFF' },
          headerTintColor: '#ffffff',
          headerTitleStyle: { fontWeight: 'bold' },
        }}
      >
        <Stack.Screen
          name="Home"
          component={HomeScreen}
          options={{ title: 'Home' }}
        />
        <Stack.Screen
          name="Detail"
          component={DetailScreen}
          options={({ route }) => ({
            title: route.params.title
          })}
        />
        <Stack.Screen
          name="Profile"
          component={ProfileScreen}
        />
      </Stack.Navigator>
    </NavigationContainer>
  );
}
```

```tsx
// screens/HomeScreen.tsx
import React from 'react';
import { View, Text, FlatList, TouchableOpacity, StyleSheet } from 'react-native';
import { NativeStackScreenProps } from '@react-navigation/native-stack';
import { RootStackParamList } from '../App';

// Typing navigation props
type Props = NativeStackScreenProps<RootStackParamList, 'Home'>;

// Sample data
const ITEMS = [
  { id: 1, title: 'First item' },
  { id: 2, title: 'Second item' },
  { id: 3, title: 'Third item' },
];

export function HomeScreen({ navigation }: Props) {
  return (
    <View style={styles.container}>
      {/* FlatList for performant lists */}
      <FlatList
        data={ITEMS}
        keyExtractor={(item) => item.id.toString()}
        renderItem={({ item }) => (
          <TouchableOpacity
            style={styles.item}
            onPress={() => {
              // Navigation with typed parameters
              navigation.navigate('Detail', {
                itemId: item.id,
                title: item.title,
              });
            }}
          >
            <Text style={styles.itemText}>{item.title}</Text>
          </TouchableOpacity>
        )}
        ItemSeparatorComponent={() => <View style={styles.separator} />}
      />
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: '#f5f5f5',
  },
  item: {
    backgroundColor: '#ffffff',
    padding: 20,
  },
  itemText: {
    fontSize: 16,
    color: '#1a1a1a',
  },
  separator: {
    height: 1,
    backgroundColor: '#e0e0e0',
  },
});
```

## State Management with Context and Hooks

Para gestionar estado de complejidad baja a media, React Context combinado con hooks personalizados resulta una solución eficiente que no requiere dependencias externas.

```tsx
// context/AuthContext.tsx
import React, { createContext, useContext, useState, useCallback } from 'react';

// Types for authentication
interface User {
  id: string;
  email: string;
  name: string;
}

interface AuthContextType {
  user: User | null;
  isLoading: boolean;
  signIn: (email: string, password: string) => Promise<void>;
  signOut: () => void;
}

// Creating context with default value
const AuthContext = createContext<AuthContextType | undefined>(undefined);

// Provider that wraps the application
export function AuthProvider({ children }: { children: React.ReactNode }) {
  const [user, setUser] = useState<User | null>(null);
  const [isLoading, setIsLoading] = useState(false);

  // Sign in function
  const signIn = useCallback(async (email: string, password: string) => {
    setIsLoading(true);
    try {
      // Simulated API call
      const response = await fetch('https://api.example.com/login', {
        method: 'POST',
        headers: { 'Content-Type': 'application/json' },
        body: JSON.stringify({ email, password }),
      });
      const data = await response.json();
      setUser(data.user);
    } catch (error) {
      console.error('Login error:', error);
      throw error;
    } finally {
      setIsLoading(false);
    }
  }, []);

  // Sign out function
  const signOut = useCallback(() => {
    setUser(null);
  }, []);

  return (
    <AuthContext.Provider value={{ user, isLoading, signIn, signOut }}>
      {children}
    </AuthContext.Provider>
  );
}

// Custom hook to use the context
export function useAuth() {
  const context = useContext(AuthContext);
  if (context === undefined) {
    throw new Error('useAuth must be used within an AuthProvider');
  }
  return context;
}
```

```tsx
// screens/LoginScreen.tsx
import React, { useState } from 'react';
import {
  View,
  Text,
  TextInput,
  TouchableOpacity,
  StyleSheet,
  ActivityIndicator,
  Alert,
} from 'react-native';
import { useAuth } from '../context/AuthContext';

export function LoginScreen() {
  const [email, setEmail] = useState('');
  const [password, setPassword] = useState('');
  const { signIn, isLoading } = useAuth();

  // Form submission handler
  const handleSubmit = async () => {
    if (!email || !password) {
      Alert.alert('Error', 'Please fill in all fields');
      return;
    }

    try {
      await signIn(email, password);
    } catch (error) {
      Alert.alert('Error', 'Invalid credentials');
    }
  };

  return (
    <View style={styles.container}>
      <Text style={styles.title}>Login</Text>

      <TextInput
        style={styles.input}
        placeholder="Email"
        value={email}
        onChangeText={setEmail}
        keyboardType="email-address"
        autoCapitalize="none"
        autoComplete="email"
      />

      <TextInput
        style={styles.input}
        placeholder="Password"
        value={password}
        onChangeText={setPassword}
        secureTextEntry
        autoComplete="password"
      />

      <TouchableOpacity
        style={[styles.button, isLoading && styles.buttonDisabled]}
        onPress={handleSubmit}
        disabled={isLoading}
      >
        {isLoading ? (
          <ActivityIndicator color="#ffffff" />
        ) : (
          <Text style={styles.buttonText}>Sign In</Text>
        )}
      </TouchableOpacity>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    padding: 20,
    justifyContent: 'center',
    backgroundColor: '#ffffff',
  },
  title: {
    fontSize: 28,
    fontWeight: 'bold',
    marginBottom: 32,
    textAlign: 'center',
  },
  input: {
    borderWidth: 1,
    borderColor: '#e0e0e0',
    borderRadius: 10,
    padding: 16,
    marginBottom: 16,
    fontSize: 16,
    backgroundColor: '#f9f9f9',
  },
  button: {
    backgroundColor: '#007AFF',
    padding: 16,
    borderRadius: 10,
    alignItems: 'center',
    marginTop: 8,
  },
  buttonDisabled: {
    backgroundColor: '#99c9ff',
  },
  buttonText: {
    color: '#ffffff',
    fontSize: 18,
    fontWeight: '600',
  },
});
```

> **Global vs Local State**
>
> For more complex applications with extensive shared state, solutions like Zustand or Redux Toolkit may be preferable. Context is optimal for state that changes infrequently (theme, authentication).

## API Calls and Data Management

La comunicación con el backend es central en cualquier aplicación móvil. El siguiente patrón establece una capa de abstracción robusta para las llamadas a la API.

```tsx
// services/api.ts

// Base API configuration
const API_BASE_URL = 'https://api.example.com';

// Type for API errors
interface ApiError {
  message: string;
  code: string;
  status: number;
}

// Utility function for requests
async function request<T>(
  endpoint: string,
  options: RequestInit = {}
): Promise<T> {
  const url = `${API_BASE_URL}${endpoint}`;

  const config: RequestInit = {
    ...options,
    headers: {
      'Content-Type': 'application/json',
      ...options.headers,
    },
  };

  try {
    const response = await fetch(url, config);

    if (!response.ok) {
      const error: ApiError = await response.json();
      throw new Error(error.message || 'An error occurred');
    }

    return response.json();
  } catch (error) {
    // Network error handling
    if (error instanceof TypeError) {
      throw new Error('Network connection issue');
    }
    throw error;
  }
}

// Types for entities
interface Product {
  id: string;
  name: string;
  price: number;
  description: string;
  imageUrl: string;
}

// Products service
export const productApi = {
  // Get all products
  getAll: () => request<Product[]>('/products'),

  // Get product by ID
  getById: (id: string) => request<Product>(`/products/${id}`),

  // Create a product
  create: (data: Omit<Product, 'id'>) =>
    request<Product>('/products', {
      method: 'POST',
      body: JSON.stringify(data),
    }),

  // Update a product
  update: (id: string, data: Partial<Product>) =>
    request<Product>(`/products/${id}`, {
      method: 'PATCH',
      body: JSON.stringify(data),
    }),
};
```

```tsx
// hooks/useProducts.ts
import { useState, useEffect, useCallback } from 'react';
import { productApi } from '../services/api';

interface Product {
  id: string;
  name: string;
  price: number;
  description: string;
  imageUrl: string;
}

// Custom hook for product management
export function useProducts() {
  const [products, setProducts] = useState<Product[]>([]);
  const [isLoading, setIsLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);

  // Initial products loading
  const fetchProducts = useCallback(async () => {
    setIsLoading(true);
    setError(null);

    try {
      const data = await productApi.getAll();
      setProducts(data);
    } catch (err) {
      setError(err instanceof Error ? err.message : 'Unknown error');
    } finally {
      setIsLoading(false);
    }
  }, []);

  // Refresh (pull-to-refresh)
  const refresh = useCallback(async () => {
    await fetchProducts();
  }, [fetchProducts]);

  // Load on mount
  useEffect(() => {
    fetchProducts();
  }, [fetchProducts]);

  return {
    products,
    isLoading,
    error,
    refresh,
  };
}
```

```tsx
// screens/ProductListScreen.tsx
import React from 'react';
import {
  View,
  Text,
  FlatList,
  Image,
  StyleSheet,
  RefreshControl,
  ActivityIndicator,
} from 'react-native';
import { useProducts } from '../hooks/useProducts';

export function ProductListScreen() {
  const { products, isLoading, error, refresh } = useProducts();

  // Display during initial loading
  if (isLoading && products.length === 0) {
    return (
      <View style={styles.centered}>
        <ActivityIndicator size="large" color="#007AFF" />
        <Text style={styles.loadingText}>Loading...</Text>
      </View>
    );
  }

  // Display on error
  if (error) {
    return (
      <View style={styles.centered}>
        <Text style={styles.errorText}>{error}</Text>
      </View>
    );
  }

  return (
    <FlatList
      data={products}
      keyExtractor={(item) => item.id}
      contentContainerStyle={styles.list}
      // Pull-to-refresh
      refreshControl={
        <RefreshControl
          refreshing={isLoading}
          onRefresh={refresh}
          tintColor="#007AFF"
        />
      }
      renderItem={({ item }) => (
        <View style={styles.card}>
          <Image
            source={{ uri: item.imageUrl }}
            style={styles.image}
            resizeMode="cover"
          />
          <View style={styles.cardContent}>
            <Text style={styles.productName}>{item.name}</Text>
            <Text style={styles.productPrice}>
              ${item.price.toFixed(2)}
            </Text>
          </View>
        </View>
      )}
    />
  );
}

const styles = StyleSheet.create({
  centered: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    padding: 20,
  },
  loadingText: {
    marginTop: 12,
    fontSize: 16,
    color: '#666666',
  },
  errorText: {
    fontSize: 16,
    color: '#FF3B30',
    textAlign: 'center',
  },
  list: {
    padding: 16,
  },
  card: {
    backgroundColor: '#ffffff',
    borderRadius: 12,
    marginBottom: 16,
    shadowColor: '#000',
    shadowOffset: { width: 0, height: 2 },
    shadowOpacity: 0.1,
    shadowRadius: 4,
    elevation: 3,
  },
  image: {
    width: '100%',
    height: 200,
    borderTopLeftRadius: 12,
    borderTopRightRadius: 12,
  },
  cardContent: {
    padding: 16,
  },
  productName: {
    fontSize: 18,
    fontWeight: '600',
    color: '#1a1a1a',
    marginBottom: 4,
  },
  productPrice: {
    fontSize: 16,
    color: '#007AFF',
    fontWeight: '500',
  },
});
```

## Local Data Storage

El almacenamiento local permite persistir datos entre sesiones de la aplicación. AsyncStorage es la solución estándar para datos simples, mientras que SQLite se adapta mejor a estructuras de datos complejas.

```tsx
// services/storage.ts
import AsyncStorage from '@react-native-async-storage/async-storage';

// Required installation: npx expo install @react-native-async-storage/async-storage

// Centralized storage keys
const STORAGE_KEYS = {
  USER_TOKEN: '@app/user_token',
  USER_PREFERENCES: '@app/user_preferences',
  ONBOARDING_COMPLETE: '@app/onboarding_complete',
} as const;

// Types for user preferences
interface UserPreferences {
  theme: 'light' | 'dark' | 'system';
  notifications: boolean;
  language: string;
}

// Typed storage service
export const storage = {
  // Authentication token
  async getToken(): Promise<string | null> {
    return AsyncStorage.getItem(STORAGE_KEYS.USER_TOKEN);
  },

  async setToken(token: string): Promise<void> {
    await AsyncStorage.setItem(STORAGE_KEYS.USER_TOKEN, token);
  },

  async removeToken(): Promise<void> {
    await AsyncStorage.removeItem(STORAGE_KEYS.USER_TOKEN);
  },

  // User preferences (JSON object)
  async getPreferences(): Promise<UserPreferences | null> {
    const data = await AsyncStorage.getItem(STORAGE_KEYS.USER_PREFERENCES);
    return data ? JSON.parse(data) : null;
  },

  async setPreferences(prefs: UserPreferences): Promise<void> {
    await AsyncStorage.setItem(
      STORAGE_KEYS.USER_PREFERENCES,
      JSON.stringify(prefs)
    );
  },

  // Onboarding
  async isOnboardingComplete(): Promise<boolean> {
    const value = await AsyncStorage.getItem(STORAGE_KEYS.ONBOARDING_COMPLETE);
    return value === 'true';
  },

  async setOnboardingComplete(): Promise<void> {
    await AsyncStorage.setItem(STORAGE_KEYS.ONBOARDING_COMPLETE, 'true');
  },

  // Complete cleanup
  async clearAll(): Promise<void> {
    const keys = Object.values(STORAGE_KEYS);
    await AsyncStorage.multiRemove(keys);
  },
};
```

> **Sensitive Data Security**
>
> For sensitive data like authentication tokens, use expo-secure-store which encrypts data via iOS Keychain and Android Keystore.

## Responsive Styles and Theming

Una aplicación profesional debe adaptarse a diferentes tamaños de pantalla y ofrecer soporte para modo oscuro.

```tsx
// theme/index.ts
import { Dimensions, PixelRatio, Platform } from 'react-native';

const { width: SCREEN_WIDTH, height: SCREEN_HEIGHT } = Dimensions.get('window');

// Reference dimensions (iPhone 14)
const guidelineBaseWidth = 390;
const guidelineBaseHeight = 844;

// Scaling functions
export const scale = (size: number) =>
  (SCREEN_WIDTH / guidelineBaseWidth) * size;

export const verticalScale = (size: number) =>
  (SCREEN_HEIGHT / guidelineBaseHeight) * size;

export const moderateScale = (size: number, factor = 0.5) =>
  size + (scale(size) - size) * factor;

// Light theme
export const lightTheme = {
  colors: {
    primary: '#007AFF',
    secondary: '#5856D6',
    success: '#34C759',
    warning: '#FF9500',
    error: '#FF3B30',
    background: '#FFFFFF',
    surface: '#F2F2F7',
    text: '#000000',
    textSecondary: '#8E8E93',
    border: '#E5E5EA',
  },
  spacing: {
    xs: scale(4),
    sm: scale(8),
    md: scale(16),
    lg: scale(24),
    xl: scale(32),
  },
  typography: {
    h1: {
      fontSize: moderateScale(32),
      fontWeight: 'bold' as const,
      lineHeight: moderateScale(40),
    },
    h2: {
      fontSize: moderateScale(24),
      fontWeight: 'bold' as const,
      lineHeight: moderateScale(32),
    },
    body: {
      fontSize: moderateScale(16),
      lineHeight: moderateScale(24),
    },
    caption: {
      fontSize: moderateScale(14),
      lineHeight: moderateScale(20),
    },
  },
  borderRadius: {
    sm: scale(4),
    md: scale(8),
    lg: scale(12),
    full: 9999,
  },
};

// Dark theme
export const darkTheme = {
  ...lightTheme,
  colors: {
    ...lightTheme.colors,
    background: '#000000',
    surface: '#1C1C1E',
    text: '#FFFFFF',
    textSecondary: '#8E8E93',
    border: '#38383A',
  },
};

export type Theme = typeof lightTheme;
```

```tsx
// context/ThemeContext.tsx
import React, { createContext, useContext, useState, useEffect } from 'react';
import { useColorScheme } from 'react-native';
import { lightTheme, darkTheme, Theme } from '../theme';
import { storage } from '../services/storage';

interface ThemeContextType {
  theme: Theme;
  isDark: boolean;
  toggleTheme: () => void;
  setThemeMode: (mode: 'light' | 'dark' | 'system') => void;
}

const ThemeContext = createContext<ThemeContextType | undefined>(undefined);

export function ThemeProvider({ children }: { children: React.ReactNode }) {
  const systemColorScheme = useColorScheme();
  const [themeMode, setThemeMode] = useState<'light' | 'dark' | 'system'>('system');

  // Determine effective theme
  const isDark =
    themeMode === 'system'
      ? systemColorScheme === 'dark'
      : themeMode === 'dark';

  const theme = isDark ? darkTheme : lightTheme;

  // Load preferences on startup
  useEffect(() => {
    storage.getPreferences().then((prefs) => {
      if (prefs?.theme) {
        setThemeMode(prefs.theme);
      }
    });
  }, []);

  // Toggle between light and dark
  const toggleTheme = () => {
    const newMode = isDark ? 'light' : 'dark';
    setThemeMode(newMode);
    storage.getPreferences().then((prefs) => {
      storage.setPreferences({
        ...prefs,
        theme: newMode,
        notifications: prefs?.notifications ?? true,
        language: prefs?.language ?? 'en',
      });
    });
  };

  return (
    <ThemeContext.Provider value={{ theme, isDark, toggleTheme, setThemeMode }}>
      {children}
    </ThemeContext.Provider>
  );
}

export function useTheme() {
  const context = useContext(ThemeContext);
  if (!context) {
    throw new Error('useTheme must be used within a ThemeProvider');
  }
  return context;
}
```

## Preparing for Publication

Antes de publicar una aplicación, se deben completar varias etapas de configuración y optimización.

```json
// app.json
{
  "expo": {
    "name": "MyApp",
    "slug": "my-app",
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/icon.png",
    "userInterfaceStyle": "automatic",
    "splash": {
      "image": "./assets/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#007AFF"
    },
    "ios": {
      "supportsTablet": true,
      "bundleIdentifier": "com.example.myapp",
      "buildNumber": "1"
    },
    "android": {
      "adaptiveIcon": {
        "foregroundImage": "./assets/adaptive-icon.png",
        "backgroundColor": "#007AFF"
      },
      "package": "com.example.myapp",
      "versionCode": 1
    },
    "plugins": [
      "expo-router"
    ]
  }
}
```

```bash
# build.sh
# EAS Build configuration (Expo Application Services)
npm install -g eas-cli

# Log in to Expo account
eas login

# Configure the project
eas build:configure

# Build for iOS (simulator)
eas build --platform ios --profile development

# Build for Android (test APK)
eas build --platform android --profile preview

# Production build
eas build --platform all --profile production

# Store submission
eas submit --platform ios
eas submit --platform android
```

> **Certificates and Keys**
>
> iOS publishing requires an Apple Developer account ($99/year) and Android a Google Play Console account ($25 one-time). EAS automatically manages signing certificates.

## Conclusion

React Native ofrece un enfoque eficiente para desarrollar aplicaciones móviles multiplataforma. Los fundamentos cubiertos en esta guía permiten construir aplicaciones completas y profesionales, listas para producción.

### Lista de verificación para una app React Native exitosa

- Configurar el entorno con Expo para un inicio rápido
- Dominar los componentes base: View, Text, TouchableOpacity, FlatList
- Implementar navegación con React Navigation y tipado TypeScript
- Gestionar estado con Context API y hooks personalizados
- Estructurar las llamadas a la API con una capa de servicios dedicada
- Persistir datos localmente con AsyncStorage
- Crear un sistema de temas responsivo con soporte para modo oscuro

La documentación oficial de React Native y Expo sigue siendo la referencia para profundizar en cada tema. El ecosistema evoluciona con rapidez, y librerías como React Query o Zustand pueden simplificar aún más la gestión de datos en aplicaciones de mayor complejidad.

---

Source: SharpSkill (https://sharpskill.dev), tech interview preparation for your real stack.
HTML version of this page: https://sharpskill.dev/es/blog/react-native/react-native-building-complete-mobile-app