react native 0.73 配置 react-native-fs

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所属分类:Web前端
摘要

npmyarn把原代码改为


安装react-native-fs

npm

npm install react-native-fs --save 

yarn

yarn add react-native-fs 

安卓配置

  • android/settings.gradle
... include ':react-native-fs' project(':react-native-fs').projectDir = new File(settingsDir, '../node_modules/react-native-fs/android') 
  • android/app/build.gradle
... dependencies {     ...     implementation project(':react-native-fs') } 
  • androidappsrcmainjavacomreactnative_demoMainApplication.kt

把原代码

import com.rnfs.RNFSPackage; // 导入模块  // 下面这段代码要改 override fun getPackages(): List<ReactPackage> { 	  // Packages that cannot be autolinked yet can be added manually here, for example: 	  // packages.add(new MyReactNativePackage()); 	  return PackageList(this).packages } 

改为

import com.rnfs.RNFSPackage; // 导入模块  // 改成这样 override fun getPackages(): List<ReactPackage> =     PackageList(this).packages.apply {         // Packages that cannot be autolinked yet can be added manually here, for example:         // packages.add(new MyReactNativePackage());         add(RNFSPackage()) // 如果报错提示覆盖注册(已经自动注册了),那么把这行注释掉即可     } 

使用

import {StyleSheet, Text, View, Button} from 'react-native'; import React from 'react'; import RNFS from 'react-native-fs';  export default function CsvFile() {   const handleClick = () => {     const path = RNFS.ExternalStorageDirectoryPath + '/test.txt';     RNFS.writeFile(path, 'Lorem ipsum dolor sit amet', 'utf8')       .then(success => {         console.log('FILE WRITTEN! --> ', path);       })       .catch(err => {         console.log(err.message);       });   };   return (     <View>       <Button title="写入文件" onPress={() => handleClick()} />     </View>   ); }  const styles = StyleSheet.create({}); 

关于存储路径

RNFS.MainBundlePath (String) 主包目录的绝对路径(在 Android 上不可用) RNFS.CachesDirectoryPath (String) 缓存目录的绝对路径 RNFS.ExternalCachesDirectoryPath (String) 外部缓存目录的绝对路径(仅限安卓) RNFS.DocumentDirectoryPath (String) 文档目录的绝对路径 RNFS.DownloadDirectoryPath (String) 下载目录的绝对路径(仅在 android 上) RNFS.TemporaryDirectoryPath (String) 临时目录的绝对路径(在 Android 上回退到 Caching-Directory) RNFS.LibraryDirectoryPath (String) NSLibraryDirectory 的绝对路径(仅限 iOS) RNFS.ExternalDirectoryPath (String) 外部文件的绝对路径,共享目录(仅限安卓) RNFS.ExternalStorageDirectoryPath (String) 外部存储的绝对路径,共享目录(仅限安卓)