HarmonyOS用navigation替换router后，横屏的题目视频页面不能占满全屏

private changeOrientation(isLandscape: boolean) { 
  let context: common.UIAbilityContext = getContext(this) as common.UIAbilityContext 
  window.getLastWindow(context).then((lastWindow) => { 
    lastWindow.setPreferredOrientation(isLandscape ? window.Orientation.LANDSCAPE : window.Orientation.PORTRAIT) 
  }) 
  this.layerUIState.isLandscape = isLandscape 
}
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private hideStatusBar() { 
  let windowStage: window.WindowStage = AppStorage.get(AppStorageKey.windowStage) as window.WindowStage 
  let mainWin: window.Window = windowStage.getMainWindowSync() 
  mainWin.setWindowLayoutFullScreen(true) 
  mainWin.setSpecificSystemBarEnabled('status', false) 
    .catch((err: BusinessError) => { 
      console.error(err.message) 
    }) 
}
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