HarmonyOS 是否有一种方式能支持打开一个新路由时只在新路由中应用横屏效果，其他路由仍保持竖屏

1、首先打开entry下面的module.json5文件，在abilities节点下添加一个orientation的属性：“orientation”: ‘unspecified’

2、第一个页面：

import { router } from '@kit.ArkUI';
@Entry
@Component
struct aboutScreen1 {
  @State message: string = '';

  build() {
    Column() {
      Text('首页，点我跳转')
        .fontSize(30)
        .textAlign(TextAlign.Center)
        .width('100%')
        .fontWeight(500)
        .height('100%')
        .onClick(() => {
          router.pushUrl({url: "pages/aboutScreen2" })
        })
    }
    .justifyContent(FlexAlign.Center)
    .width('100%')
    .backgroundColor(Color.White)
    .height('100%')
  }
}

3、第二个页面：

import { router, window } from '@kit.ArkUI';
import { BusinessError } from '@kit.BasicServicesKit';

@Entry
@Component
struct aboutScreen1 {
  @State message: string = '';

  aboutToAppear(): void {
    let orientation = window.Orientation.LANDSCAPE
    this.setScreenOrientation(orientation)
  }

  aboutToDisappear(): void {
    let orientation = window.Orientation.PORTRAIT
    this.setScreenOrientation(orientation)
  }

  setScreenOrientation(orientation: window.Orientation) {
    let windowClass: window.Window | undefined = undefined;
    try{
      let promise = window.getLastWindow(getContext())
      promise.then((data) => {
        windowClass = data
        windowClass.setPreferredOrientation(orientation)
      }).catch((err: BusinessError) => {
        console.error('getLastWindow error')
      })
    } catch (e) {
      console.error('setScreenOrientation error')
    }
  }

  build() {
    Column() {
      Text('我横屏啦')
        .fontSize(30)
        .textAlign(TextAlign.Center)
        .width('100%')
        .fontWeight(500)
        .height('50%')
    }
    .justifyContent(FlexAlign.Center)
    .width('100%')
    .backgroundColor(Color.White)
    .height('100%')
  }
}