沉浸式登录界面如何实现

// WindowModel.ets
setMainWindowImmersive() {
  if (this.windowStage === undefined) {
    Logger.error('windowStage is undefined.');
    return;
  }
    // 获取主窗口window实例
  this.windowStage.getMainWindow((err, windowClass: window.Window) => {
    if (err.code) {
      Logger.error(`Failed to obtain the main window. Code:${err.code}, message:${err.message}`);
      return;
    }
    // 设置主窗口全屏显示
    windowClass.setWindowLayoutFullScreen(true, (err) => {
      if (err.code) {
        Logger.error(`Failed to set full-screen mode. Code:${err.code}, message:${err.message}`);
        return;
      }
    });
    // 设置状态栏与导航栏不显示
    windowClass.setWindowSystemBarEnable([], (err) => {
      if (err.code) {
        Logger.error(`Failed to set the system bar to be invisible. Code:${err.code}, message:${err.message}`);
        return;
      }
    });
  });
}