如何获取当前应用程序缓存目录

import { UIAbility } from '@kit.AbilityKit'; 
export default class EntryAbility extends UIAbility { 
  onCreate() { 
    let applicationContext = this.context.getApplicationContext(); 
    let tempDir = applicationContext.tempDir; 
    // 获取应用文件路径 
    let filePath = tempDir + 'test.txt'; 
    console.info(`filePath: ${filePath}`); 
  } 
}