您好，请问侧边栏怎么调整到左上角？ about mood-example HOT 6 CLOSED

          /// 菜单

          TabBar(
            enableFeedback: true,
            padding: EdgeInsets.only(left: 40.w),
            controller: _pageController,
            indicatorColor: Colors.transparent,
            labelStyle: TextStyle(
              height: 0.5.h,
              fontSize: 10.sp,
              fontWeight: FontWeight.bold,
            ),
            unselectedLabelStyle: TextStyle(
              height: 0.5.h,
              fontSize: 10.sp,
              fontWeight: FontWeight.bold,
            ),
            tabs: [
              Tab(
                key: const Key('tab_home'),
                text: S.of(context).app_bottomNavigationBar_title_home,
                icon: Icon(
                  Remix.home_line,
                  size: _tabIconSize,
                ),
              ),
              Tab(
                key: const Key('tab_mood'),
                text: S.of(context).app_bottomNavigationBar_title_mood,
                icon: Icon(
                  Remix.heart_3_line,
                  size: _tabIconSize,
                ),
              ),
              Tab(
                key: const Key('tab_statistic'),
                text: S.of(context).app_bottomNavigationBar_title_statistic,
                icon: Icon(
                  Remix.bar_chart_line,
                  size: _tabIconSize,
                ),
              ),
            ],
            onTap: (value) {
              switch (value) {
                case 2:
                  // 统计菜单触发
                  statistic.init(context);
              }
              _pageViewController.jumpToPage(value);
              setState(() {
                _currentPage = value;
              });
            },
          ),
        ],
      ),
    ),
  ),
);