Widget _buildItemWithIcon(BuildContext context) {
    var tabs = [
      const TDTab(
        text: '选项',
        icon: Icon(
          TDIcons.app,
          size: 18,
        ),
      ),
      const TDTab(
        text: '选项',
        icon: Icon(
          TDIcons.app,
          size: 18,
        ),
      ),
      const TDTab(
        text: '选项',
        icon: Icon(
          TDIcons.app,
          size: 18,
        ),
      ),
    ];
    return TDTabBar(
        tabs: tabs,
        controller: TabController(length: 3, vsync: this),
        backgroundColor: Colors.white,
        showIndicator: true);
  }