无法在React Native中获取和显示图像滑块中的图像

import React, { useState } from 'react';
import { View, Image, ScrollView } from 'react-native';

const ImageSlider = () => {
  const [selectedIndex, setSelectedIndex] = useState(0);

  // 图像数据
  const images = [
    { id: 1, url: 'https://example.com/image1.jpg' },
    { id: 2, url: 'https://example.com/image2.jpg' },
    { id: 3, url: 'https://example.com/image3.jpg' },
  ];

  // 图像滑块的滑动事件处理函数
  const handleScroll = (event) => {
    const contentOffsetX = event.nativeEvent.contentOffset.x;
    const index = Math.round(contentOffsetX / windowWidth);
    setSelectedIndex(index);
  };

  return (
    <View>
      <ScrollView
        horizontal
        pagingEnabled
        showsHorizontalScrollIndicator={false}
        onScroll={handleScroll}
        scrollEventThrottle={16}
      >
        {images.map((image) => (
          <Image key={image.id} source={{ uri: image.url }} style={styles.image} />
        ))}
      </ScrollView>
      <View style={styles.indicatorContainer}>
        {images.map((_, index) => (
          <View
            key={index}
            style={[
              styles.indicator,
              index === selectedIndex ? styles.selectedIndicator : null,
            ]}
          />
        ))}
      </View>
    </View>
  );
};

const styles = StyleSheet.create({
  image: {
    width: windowWidth,
    height: windowHeight,
  },
  indicatorContainer: {
    flexDirection: 'row',
    justifyContent: 'center',
    marginTop: 10,
  },
  indicator: {
    width: 8,
    height: 8,
    borderRadius: 4,
    backgroundColor: '#ccc',
    marginHorizontal: 4,
  },
  selectedIndicator: {
    backgroundColor: '#333',
  },
});

const App = () => {
  return (
    <View style={styles.container}>
      <ImageSlider />
    </View>
  );
};

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