react-native-fs

• https://github.com/itinance/react-native-fs

상수

• MainBundlePath (String) The absolute path to the main bundle directory (not available on Android)

• CachesDirectoryPath (String) The absolute path to the caches directory

• ExternalCachesDirectoryPath (String) The absolute path to the external caches directory (android only)

• DocumentDirectoryPath (String) The absolute path to the document directory

• DownloadDirectoryPath (String) The absolute path to the download directory (on android only)

• TemporaryDirectoryPath (String) The absolute path to the temporary directory (falls back to Caching-Directory on Android)

• LibraryDirectoryPath (String) The absolute path to the NSLibraryDirectory (iOS only)

• ExternalDirectoryPath (String) The absolute path to the external files, shared directory (android only)

• ExternalStorageDirectoryPath (String) The absolute path to the external storage, shared directory (android only)

파일에 쓰기

import RNFS from 'react-native-fs'; //또는 var RNFS = require('react-native-fs');

const path = RNFS.DocumentDirectoryPath + '/request';
console.log("path : ", path);

const request = {
    "title": lectureTitle,
    "classKind": category,
    "groupName": association,
    "certificateKind": certificate,
    "description": lectureContent,
    "price": fee,
    "period": 4,
    "studentCount": max,
    "region": area,
    "swimmingPoolId": 1,
    "equipmentList": [
        { "name": "물안경", "price": 3000 }, 
        { "name": "수영모", "price": 3000 }
    ]
};

RNFS.writeFile(path, JSON.stringify(request), 'utf8')
    .then((success) => console.log("파일 쓰기 성공"))
    .catch((err) => console.log("파일쓰기 에러 ", err))

파일 다운로드

type DownloadFileOptions = {
  fromUrl: string;          // URL to download file from
  toFile: string;           // Local filesystem path to save the file to
  headers?: Headers;        // An object of headers to be passed to the server
  background?: boolean;     // Continue the download in the background after the app terminates (iOS only)
  discretionary?: boolean;  // Allow the OS to control the timing and speed of the download to improve perceived performance  (iOS only)
  cacheable?: boolean;      // Whether the download can be stored in the shared NSURLCache (iOS only, defaults to true)
  progressInterval?: number;
  progressDivider?: number;
  begin?: (res: DownloadBeginCallbackResult) => void;
  progress?: (res: DownloadProgressCallbackResult) => void;
  resumable?: () => void;    // only supported on iOS yet
  connectionTimeout?: number // only supported on Android yet
  readTimeout?: number       // supported on Android and iOS
  backgroundTimeout?: number // Maximum time (in milliseconds) to download an entire resource (iOS only, useful for timing out background downloads)
};

type DownloadResult = {
  jobId: number;          // The download job ID, required if one wishes to cancel the download. See `stopDownload`.
  statusCode: number;     // The HTTP status code
  bytesWritten: number;   // The number of bytes written to the file
};