如何在onPageShow中区分getParams来源

@Entry({ routeName: 'Router1' }) 
@Component 
export struct Router1 { 
  @State message: string = 'Hello World Router1' 
  flag: boolean = true 
  onPageShow() { 
    const data = router.getParams() as Params 
    console.log('Demo123 onPageShow ' + data?.test + ' ') 
  } 
 
  onPageHide() { 
    this.flag = true 
  } 
 
  build() { 
    Button('aa').onClick(() => { 
      router.pushUrl({ url: 'pages/Router2' }).then(() => { 
        this.flag = false 
      }) 
    }) 
  } 
}