HarmonyOS 如何获取系统状态栏高度？

import {window} from '@kit.ArkUI' 
@Entry 
@Component 
struct Page1 { 
 @State STATUSBAR_HEIGHT: number = 0; 
 
 onPageShow(): void { 
  window.getLastWindow(getContext(this), (err, win) => { 
   win.setWindowLayoutFullScreen(true); 
   // Get status bar height. 
   let type_status = window.AvoidAreaType.TYPE_SYSTEM; 
   let area: window.AvoidArea = win.getWindowAvoidArea(type_status); 
   let statusBarHeight = px2vp(area.topRect.height); 
   this.STATUSBAR_HEIGHT = statusBarHeight 
  }) 
 } 
 
 build() { 
  Column() { 
   Blank().height(this.STATUSBAR_HEIGHT).backgroundColor(Color.Pink) 
   Text("STATUSBAR_HEIGHT:" + this.STATUSBAR_HEIGHT).padding(10) 
  } 
  .height("100%") 
  .width('100%') 
 } 
}