#鸿蒙学习大百科#如何将文件描述符转化为File？

import { common } from '@kit.AbilityKit';
import fs from '@ohos.file.fs';
@Entry
@Component
struct Index {
  private context = getContext(this) as common.UIAbilityContext;
  build() {
    Row() {
      Column() {
        Text("Hello")
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            let applicationContext = this.context.getApplicationContext();
            let cacheDir = applicationContext.cacheDir;
            fs.open(cacheDir + "/aaa", fs.OpenMode.CREATE | fs.OpenMode.READ_WRITE).then((file: fs.File) => {
              let fd = file.fd
              let file2 = fs.dup(fd) //将file的fd转换为file2
              fs.close(file)
              fs.close(file2)
            })
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}