如何在expo react原生项目中获取本地视频的base64

expo install expo-image-picker expo-file-system

import * as ImagePicker from 'expo-image-picker';
import * as FileSystem from 'expo-file-system';

const getLocalVideoBase64 = async () => {
  // 请求用户授权访问相册
  const { status } = await ImagePicker.requestMediaLibraryPermissionsAsync();
  if (status !== 'granted') {
    // 处理未授权的情况
    return;
  }

  // 打开相册选择视频
  const video = await ImagePicker.launchImageLibraryAsync({
    mediaTypes: ImagePicker.MediaTypeOptions.Videos,
    allowsEditing: false,
    quality: 1,
  });

  if (!video.cancelled) {
    // 读取视频文件的 base64 数据
    const base64 = await FileSystem.readAsStringAsync(video.uri, {
      encoding: FileSystem.EncodingType.Base64,
    });

    // 在这里可以对 base64 数据进行处理或发送到服务器
    console.log(base64);
  }
};

getLocalVideoBase64();