HarmonyOS鸿蒙Next中如何监听折叠屏状态

HarmonyOS鸿蒙Next中可以通过display模块监听折叠屏状态

   let callback: Callback<display.FoldStatus> = (data: display.FoldStatus) => {
      console.info('Listening enabled. Data: ' + JSON.stringify(data));
      if (data==1) {  //展开
        this.pathStack.replacePath({
          name:"StoragePage"
        })
      }else{
        this.pathStack.pop()  //合住

      }
    };
    display.on('foldStatusChange', callback);