React本机平面列表多项选择未更新

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

const MyList = () => {
  const [selectedItems, setSelectedItems] = useState([]);

  const data = [
    { id: 1, name: 'Item 1' },
    { id: 2, name: 'Item 2' },
    { id: 3, name: 'Item 3' },
    // ...
  ];

  const handleItemPress = (itemId) => {
    if (selectedItems.includes(itemId)) {
      setSelectedItems(selectedItems.filter((id) => id !== itemId));
    } else {
      setSelectedItems([...selectedItems, itemId]);
    }
  };

  const renderItem = ({ item }) => {
    const isSelected = selectedItems.includes(item.id);

    return (
      <TouchableOpacity
        onPress={() => handleItemPress(item.id)}
        style={{ backgroundColor: isSelected ? 'gray' : 'white' }}
      >
        <Text>{item.name}</Text>
      </TouchableOpacity>
    );
  };

  return (
    <FlatList
      data={data}
      renderItem={renderItem}
      keyExtractor={(item) => item.id.toString()}
    />
  );
};

export default MyList;