#鸿蒙学习大百科#如何在指定路径下创建一个可读可写的文件？

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;
            //cache下创建test.txt文件
            fs.createRandomAccessFile(cacheDir + "/test.txt", fs.OpenMode.CREATE | fs.OpenMode.READ_WRITE)
              .then(() => {

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