HarmonyOS 通过步骤2获取应用缓存目录,删除目录，通过步骤1获取缓存还是有一些字节内存，无法彻底删除干净

cacheSize包含以下几个目录，仅清理应用沙箱路径下的cache还显示有大小是正常规格。

/data/storage/el1/base/cache

/data/storage/el1/base/haps/entry/cache

/data/storage/el2/base/cache

/data/storage/el2/base/haps/entry/cache

清理demo：

import fs from ‘@ohos.file.fs’;
let cacheDir = context.cacheDir;
@Entry
@Component
struct Clear_cache {
  clearCache() {
    // let cacheDir = getContext(this).cacheDir
    // fs.rmdirSync(cacheDir)
    // console.log(“delete !!!”)

    fs.listFile(cacheDir).then((filenames) => {
      for (let i = 0;i < filenames.length; i++) {
        // let dirPath = cacheDir+filenames[i]
        let dirPath = ${cacheDir}/${filenames[i]}
        // 判断是否文件夹
        let isDirectory
        try {
          isDirectory = fs.statSync(dirPath).isDirectory()
        }
        catch (e) {
          console.log(e)
        }

        if (isDirectory) {
          fs.rmdirSync(dirPath)
        } else {
          fs.unlink(dirPath).then(() => {
            console.info(“remove file succeed”);
          }).catch((err) => {
            console.info("remove file failed with error message: " + err.message + ", error code: " + err.code);
          });
        }
      }

    })
  }
}

获取应用文件路径:

https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/application-context-stage-V5#获取应用文件路径