HarmonyOS 类似onactivity result这个功能 在Harmony OS中推荐怎么实现?

import common from '@ohos.app.ability.common'; 
 
@Entry 
@Component 
struct Index { 
  @Provide("pageInfos") pageInfos: NavPathStack = new NavPathStack(); 
 
  @Builder 
  PagesMap(name: string) { 
    if (name == '页面A') { 
      pageA() 
    } else if (name == '页面B') { 
      pageB() 
    } 
  } 
 
  getPopInfo(popInfo: PopInfo){ 
    console.log(JSON.stringify(popInfo)) 
  } 
 
  build() { 
    Navigation(this.pageInfos) { 
      Column({ space: 10 }) { 
        Button("页面A").onClick(() => { 
          this.pageInfos.pushPath({name: '页面A', param: null, 
            // 将name指定的NavDestination页面信息入栈，传递的数据为param，添加接收处理结果的onPop回调。 
            onPop: (popInfo: PopInfo)=>this.getPopInfo(popInfo)}); 
        }) 
        Button("页面B").onClick(() => { 
          this.pageInfos.pushPath({name: '页面B', param: null, 
            // 将name指定的NavDestination页面信息入栈，传递的数据为param，添加接收处理结果的onPop回调。 
            onPop: (popInfo: PopInfo)=>this.getPopInfo(popInfo)}); 
        }) 
      } 
    } 
    .title("Root") 
    .mode(NavigationMode.Auto) 
    .navDestination(this.PagesMap) 
    .width('100%') 
    .height('100%') 
  } 
} 
 
@Component 
struct pageA { 
  @Consume("pageInfos") pageInfos: NavPathStack; 
 
  build() { 
    NavDestination() { 
      Text("页面A") 
    } 
    .onBackPressed(() => { 
      this.pageInfos.pop({ 
        data: "页面A的路由数据", 
        from: "pageA路由" 
      }) 
      return true 
    }) 
  } 
} 
 
 
@Component 
struct pageB { 
  @Consume("pageInfos") pageInfos: NavPathStack; 
 
  build() { 
    NavDestination() { 
      Text("页面B") 
    } 
    .onBackPressed(() => { 
      this.pageInfos.pop({ 
        data: "页面B的路由数据", 
        from: "pageB路由" 
      }) 
      return true 
    }) 
  } 
}