Componentes principales de React Native frente al DOM web

¿Por qué no hay HTML en React Native?

View — El equivalente de div

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

function Card() {
  return (
    <View style={styles.card}>
      {/* children go here */}
    </View>
  );
}

const styles = StyleSheet.create({ card: { padding: 16, borderRadius: 8 } });

Text — El equivalente de p/span

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

function Greeting() {
  return (
    <View>
      <Text style={{ fontSize: 24, fontWeight: 'bold' }}>Hello!</Text>
      <Text>Welcome to React Native.</Text>
    </View>
  );
}

Image — El equivalente de img

import { Image } from 'react-native';

// Local asset:
<Image source={require('./assets/logo.png')} style={{ width: 100, height: 100 }} />

// Network image (must provide dimensions):
<Image source={{ uri: 'https://example.com/photo.jpg' }} style={{ width: 200, height: 150 }} />

ScrollView — El equivalente de overflow:scroll

import { ScrollView, Text } from 'react-native';

function Article({ paragraphs }) {
  return (
    <ScrollView>
      {paragraphs.map((p, i) => <Text key={i}>{p}</Text>)}
    </ScrollView>
  );
}

FlatList — La lista virtualizada

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

function UserList({ users }) {
  return (
    <FlatList
      data={users}
      keyExtractor={u => u.id}
      renderItem={({ item }) => <Text>{item.name}</Text>}
    />
  );
}

TouchableOpacity — El equivalente de button

import { TouchableOpacity, Text } from 'react-native';

function Button({ onPress, title }) {
  return (
    <TouchableOpacity onPress={onPress} activeOpacity={0.7}>
      <Text>{title}</Text>
    </TouchableOpacity>
  );
}

TextInput — El equivalente de input

import { TextInput, useState } from 'react-native';

function SearchBar() {
  const [query, setQuery] = useState('');
  return (
    <TextInput
      value={query}
      onChangeText={setQuery}
      placeholder="Search..."
      keyboardType="default"
    />
  );
}

ActivityIndicator — El indicador de carga

import { ActivityIndicator, View } from 'react-native';

<View style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
  <ActivityIndicator size="large" color="#4f46e5" />
</View>

SafeAreaView

import { SafeAreaView } from 'react-native-safe-area-context';

export default function App() {
  return (
    <SafeAreaView style={{ flex: 1 }}>
      <MyScreen />
    </SafeAreaView>
  );
}

Modal

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

<Modal visible={showModal} animationType="slide" transparent={true}>
  <View style={styles.overlay}>
    <View style={styles.dialog}>
      <Text>Are you sure?</Text>
    </View>
  </View>
</Modal>

Comprobación rápida

Resumen