Widget _expansionPanelTypeTabBar(BuildContext context) {
    return TDBottomTabBar(
      TDBottomTabBarBasicType.expansionPanel,
      useVerticalDivider: true,
      navigationTabs: [
        TDBottomTabBarTabConfig(
          tabText: '标签',
          onTap: () {
            onTapTab(context, '标签1');
          },
        ),
        TDBottomTabBarTabConfig(
          tabText: '标签',
          onTap: () {
            onTapTab(context, '标签2');
          },
        ),
        TDBottomTabBarTabConfig(
            tabText: '展开项',
            onTap: () {
              onTapTab(context, '展开项');
            },
            popUpButtonConfig: TDBottomTabBarPopUpBtnConfig(
                popUpDialogConfig: TDBottomTabBarPopUpShapeConfig(
                  radius: 10,
                  arrowWidth: 16,
                  arrowHeight: 8,
                ),
                items: [
                  '展开项一',
                  '展开项二',
                  '展开项三',
                ]
                    .reversed
                    .map((e) => PopUpMenuItem(
                          value: e,
                          itemWidget: SizedBox(
                            //height: 30,
                            child: Text(
                              e,
                              style: TextStyle(color: TDTheme.of(context).fontGyColor1, fontSize: 16),
                            ),
                          ),
                        ))
                    .toList(),
                onChanged: (v) {
                  TDToast.showText('点击了 $v', context: context);
                })),
      ],
    );
  }