React Native + Expo :保存来自url的pdf/word文档，并使用链接在不同的应用程序中打开文件

npm install expo-file-system expo-intent-launcher

import * as FileSystem from 'expo-file-system';

const downloadFile = async (url, savePath) => {
  const { uri } = await FileSystem.downloadAsync(url, savePath);
  return uri;
};

const fileUrl = 'https://example.com/document.pdf';
const savePath = FileSystem.documentDirectory + 'document.pdf';

const downloadedFileUri = await downloadFile(fileUrl, savePath);

import * as IntentLauncher from 'expo-intent-launcher';

const openFile = async (filePath, fileType) => {
  await IntentLauncher.startActivityAsync(IntentLauncher.ACTION_VIEW, {
    data: filePath,
    type: fileType,
  });
};

const fileType = 'application/pdf'; // 或 'application/msword' for Word文档
await openFile(downloadedFileUri, fileType);