HarmonyOS 鸿蒙Next router转Navigation

问题一：若需要router和Navigation混用，需要在router跳转到的页面使用Navigation组件重新开启新的Navigation

参考demo：

//index.ets (在main_page.json中注册)
@Entry
@Component
struct Index {
  pageInfo: NavPathStack = new NavPathStack()
  build() {
    Navigation(this.pageInfo) {
      Column() {
        Button('StartTest', { stateEffect: true, type: ButtonType.Capsule })
          .width('80%')
          .height(40)
          .margin(20)
          .onClick(() => {
            this.pageInfo.pushPath({ name: 'pageOne' })
          })
      }
    }.title('NavIndex')
  }
}


//PageOne.ets （需要注册routermap）
import { router } from '@kit.ArkUI';
@Builder
export function PageOneBuilder(name: string, param: Object) {
  PageOne()
}
@Component
struct PageOne {
  pageInfo: NavPathStack = new NavPathStack();
  @State message: string = 'pageOne'
  aboutToAppear(): void {


  }
  build() {
    NavDestination() {
      Text(this.message)
        .width('80%')
        .height(50)
        .margin(10)
      Button('pushPath', { stateEffect: true, type: ButtonType.Capsule })
        .width('80%')
        .height(40)
        .margin(10)
        .onClick(()=>{
          //使用router跳转到下一个页面
          router.pushUrl({
            url:"pages/PageRouterOne"
          })
        })
    }
    .height('100%')
    .width('100%')
  }
}


//PageRouterOne.ets (在main_page.json中注册)
@Entry
@Component
struct PageRouterOne {
  pageInfo: NavPathStack = new NavPathStack();
  @State message: string = 'Hello World';
  build() {
    Navigation(this.pageInfo) {
      Text(this.message)
        .id('PageRouterOneHelloWorld')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .alignRules({
          center: { anchor: 'container', align: VerticalAlign.Center },
          middle: { anchor: 'container', align: HorizontalAlign.Center }
        })
      Button("看看下面").onClick(()=>{
        this.pageInfo.pushPath({name:"pageTwo"})
      })
    }
    .height('100%')
    .width('100%')
  }
}


//PageTwo.ets（需要注册routermap）
@Builder
export function PageTwoBuilder(name: string, param: Object) {
  PageOne()
}
@Component
struct PageOne {
  pageInfo: NavPathStack = new NavPathStack();
  @State message: string = 'pageTwo'
  build() {
    NavDestination() {
      Text(this.message)
        .width('80%')
        .height(50)
        .margin(10)
      Button('pushPath', { stateEffect: true, type: ButtonType.Capsule })
        .width('80%')
        .height(40)
        .margin(10)
    }
    .height('100%')
    .width('100%')
  }
}


//router_map.json
{
  "routerMap": [
    {
      "name": "pageOne",
      "pageSourceFile": "src/main/ets/pages/PageOne.ets",
      "buildFunction": "PageOneBuilder",
      "data": {
        "description": "this is pageOne"
      }
    },
    {
      "name": "pageTwo",
      "pageSourceFile": "src/main/ets/pages/PageTwo.ets",
      "buildFunction": "PageTwoBuilder"
    }
  ]
}

问题二：可以只使用导航的能力，不过子页面仍然是通过NavDestination来定义 ， 问题三：一个页面既是主页面又是子页面，相当于Navigation 里的某个 NavDestination 包含自己的 NavPathStack ，多个navigation需要声明多个NavPathStack。