#鸿蒙学习大百科#如何查询文件夹下所有文件名（包含子目录）？

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.listFile(cacheDir).then((filenames:Array<string>)=>{
              //cacheDir目录下的所有文件（包含子目录）
              console.log("====="+filenames.toString())
            })

          })
      }
      .width('100%')
    }
    .height('100%')
  }
}