react-native - react native 文件系统以递归方式读取目录以获取子文件夹和其中的项目

Question

我可以使用以下函数读取目录中的文件

    const path = RNFS.DocumentDirectoryPath;

    RNFS.readDir(path)
    .then((result) => {
        console.warn(result);
        const Files = [];

        if(result != undefined && result.length > 0){

            for(index in result) {
                const item = result[index];
                console.log(item);

                if(item.isFile()){

                    Files.push(item);
                }
            }

            if(Files.length > 0) {

                callback(Files);
            }
            else{

                callback(null);
            }
        }
        else{
            callback(null);
        }
    })
    .catch(err => {

        console.log('err in reading files');
        console.log(err);
        callback(null);
    })

但是我想读取目录及其子目录和属于它们的文件，有什么办法可以实现吗？

Answer 1

我已经实现了从 Assets 中的内容递归复制到文档目录中的内容，如下所示:

import FileSystem from "react-native-fs";

async copyRecursive(source, destination) {
    console.log(`${source} => ${destination}`);
    const items = await FileSystem.readDirAssets(source);

    console.log(`mkdir ${destination}/`);
    await FileSystem.mkdir(destination);

    await items.forEach(async item => {
      if (item.isFile()) {
        console.log(`f ${item.path}`);

        const destPath =
          FileSystem.DocumentDirectoryPath + "/" + source + "/" + item.name;

        console.log(`cp ${item.path} ${destPath}`);
        await FileSystem.copyFileAssets(item.path, destPath);
      } else {
        console.log(`d ${item.path}/`);

        // Restart with expanded path
        const subDirectory = source + "/" + item.name;
        const subDestination = destination + "/" + item.name;
        await this.copyRecursive(subDirectory, subDestination);
      }
    });

    this.setState({
      androidReady: true
    });
}