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React Native provides a set of core components that are the building blocks for your mobile application. These components are platform-agnostic wrappers around native UI elements.

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What are Core Components?

Core components are pre-built React components that map directly to native platform UI components. When you use a React Native component, React Native invokes the corresponding native component on iOS and Android.

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Essential Components

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Layout Components

View

The most fundamental component for building UI. A container that supports layout with flexbox, style, and touch handling.

ScrollView

A scrollable container that can host multiple components and views.

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Content Components

Text

A component for displaying text.

Image

A component for displaying images from various sources.

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Input Components

TextInput

A foundational component for inputting text via keyboard.

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Component Hierarchy

React Native components follow a hierarchy: 
View (Container)
├── Text (Display)
├── Image (Display)
├── TextInput (Input)
└── ScrollView (Layout)
    └── View (Nested Content)

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Key Concepts

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Props

All React Native components accept props to customize their behavior and appearance. Common props include:
  • style - Styling using React Native’s style system
  • testID - Identifier for testing
  • accessible - Accessibility configuration

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Styling

Components use the style prop with StyleSheet API or inline styles. React Native uses flexbox for layout. 
import { View, StyleSheet } from 'react-native';

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

<View style={styles.container} />

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Platform-Specific Behavior

Many components have platform-specific props and behaviors. These are clearly marked in the documentation with platform tags.

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Next Steps

Explore each component’s documentation to learn about their specific props, methods, and usage examples.

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