如何在reactnative中将图像读取为二进制/blob

npm install react-native-image-picker --save

import React, { useState } from 'react';
import { View, Button, Image } from 'react-native';
import ImagePicker from 'react-native-image-picker';

const pickImage = () => {
  ImagePicker.showImagePicker({}, (response) => {
    if (response.didCancel) {
      console.log('User cancelled image picker');
    } else if (response.error) {
      console.log('ImagePicker Error: ', response.error);
    } else {
      const source = { uri: response.uri };
      const imageData = 'data:image/jpeg;base64,' + response.data;
      // 在这里可以使用imageData进行后续操作，比如上传到服务器等
      console.log('Image Data: ', imageData);
    }
  });
};

const App = () => {
  return (
    <View>
      <Button title="Select Image" onPress={pickImage} />
    </View>
  );
};