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React native mobile development

Skill ComeOnOliver/skillshub/skills/aiskillstore/marketplace/babakbar/react-native-mobile-development

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Install
npx -y skills add ComeOnOliver/skillshub --skill react-native-mobile-development

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What its author says it does

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Build and manage React Native/Expo mobile apps including project setup, development workflows, and platform-specific guidance. Use when working on mobile app development, configuration, or running apps.

SKILL.md

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React Native Mobile Development

Guide for building mobile apps with React Native and Expo.

When to Use

  • Setting up React Native/Expo projects
  • Running dev servers or builds
  • Creating mobile components
  • Handling platform-specific code (iOS/Android)
  • Configuring app.json or native modules
  • Troubleshooting mobile-specific issues

Core Commands

# Development
npm start               # Start Metro bundler
npm run ios            # Run on iOS Simulator
npm run android        # Run on Android Emulator

# Expo specific
npx expo start         # Start with Expo CLI
npx expo install PKG   # Install compatible packages
npx expo prebuild      # Generate native code

Component Structure

// Mobile component template
import { View, Text, TouchableOpacity, StyleSheet } from 'react-native';

interface Props {
  title: string;
  onPress: () => void;
}

export function MyComponent({ title, onPress }: Props) {
  return (
    <TouchableOpacity onPress={onPress} style={styles.container}>
      <Text style={styles.text}>{title}</Text>
    </TouchableOpacity>
  );
}

const styles = StyleSheet.create({
  container: {
    padding: 16,
    backgroundColor: '#007AFF',
    borderRadius: 8,
  },
  text: {
    color: '#FFFFFF',
    fontSize: 16,
    fontWeight: '600',
  },
});

Platform-Specific Code

import { Platform } from 'react-native';

// Conditional rendering
{Platform.OS === 'ios' && <IOSComponent />}
{Platform.OS === 'android' && <AndroidComponent />}

// Platform-specific values
const height = Platform.select({
  ios: 44,
  android: 56,
  default: 50,
});

// Platform-specific styles
const styles = StyleSheet.create({
  container: {
    ...Platform.select({
      ios: { shadowColor: '#000', shadowOpacity: 0.3 },
      android: { elevation: 4 },
    }),
  },
});

Best Practices

  1. Performance: Use StyleSheet.create(), avoid inline styles, optimize images
  2. Accessibility: Add accessibilityLabel and accessibilityRole
  3. Responsive: Test on different screen sizes
  4. Navigation: Use React Navigation or Expo Router
  5. State: Keep component state minimal, use context/store for shared state

Common Patterns

Lists

import { FlatList } from 'react-native';

<FlatList
  data={items}
  keyExtractor={(item) => item.id}
  renderItem={({ item }) => <ItemComponent item={item} />}
/>

Forms

import { TextInput } from 'react-native';
const [value, setValue] = useState('');

<TextInput
  value={value}
  onChangeText={setValue}
  placeholder="Enter text"
  style={styles.input}
/>

Loading States

import { ActivityIndicator } from 'react-native';

{loading ? <ActivityIndicator /> : <Content />}

Troubleshooting

  • Metro won't start: Clear cache with npx expo start --clear
  • Native module error: Run npx expo prebuild --clean
  • Build fails: Check app.json configuration
  • Simulator issues: Reset simulator or emulator

Resources

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