React Native动态更改视图的背景颜色

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

const App = () => {
  const [bgColor, setBgColor] = useState('#FFFFFF'); // 初始背景颜色为白色

  const changeColor = () => {
    const newColor = bgColor === '#FFFFFF' ? '#000000' : '#FFFFFF'; // 切换颜色
    setBgColor(newColor);
  };

  return (
    <View style={[styles.container, { backgroundColor: bgColor }]}>
      <Text style={styles.text}>点击按钮更改背景颜色</Text>
      <TouchableOpacity onPress={changeColor} style={styles.button}>
        <Text style={styles.buttonText}>更改颜色</Text>
      </TouchableOpacity>
    </View>
  );
};

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
  },
  text: {
    fontSize: 20,
    marginBottom: 20,
  },
  button: {
    backgroundColor: '#DDDDDD',
    paddingHorizontal: 20,
    paddingVertical: 10,
    borderRadius: 5,
  },
  buttonText: {
    color: '#000000',
    fontSize: 18,
  },
});

export default App;