React Native:在方向更改上应用不同的风格

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

const App = () => {
  const [isPortrait, setIsPortrait] = useState(Dimensions.get('window').height > Dimensions.get('window').width);

  useEffect(() => {
    const handleOrientationChange = ({ window }) => {
      setIsPortrait(window.height > window.width);
    };

    Dimensions.addEventListener('change', handleOrientationChange);

    return () => {
      Dimensions.removeEventListener('change', handleOrientationChange);
    };
  }, []);

  return (
    <View style={[styles.container, isPortrait ? styles.portrait : styles.landscape]}>
      <Text style={styles.text}>Current Orientation: {isPortrait ? 'Portrait' : 'Landscape'}</Text>
    </View>
  );
};

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

export default App;