Tabbar 简单封装

Tabbar自定义记录

  PreferredSize _customTabBar() {
    return PreferredSize(
      child: Row(
        mainAxisAlignment: MainAxisAlignment.start,
        children: <Widget>[
          Expanded(
            child: TabBar(
              isScrollable: true,
              controller: _tabController,
              tabs: _tabs.map((e) => Tab(text: e)).toList(),
            ),
          ),
          IconButton(
            icon: Icon(
              Icons.menu,
              color: Colors.white,
            ),
            onPressed: _editTabs,
          ),
        ],
      ),
      preferredSize: Size.fromHeight(44),
    );
  }

使用

      appBar: AppBar(
        title: Text('健康咨询'),
        bottom: _customTabBar();
      ),
  默认 
bottom: TabBar(
          isScrollable: true,
          controller: _tabController,
          tabs: _tabs.map((e) => Tab(text: e)).toList(),
        ),