关于flutter:Flutter-AppBar-使用-TabBar且去掉-Title

应用 PreferredSize

class TabBarTestView extends StatelessWidget {const TabBarTestView({super.key});
 
  @override
  Widget build(BuildContext context) {
    return DefaultTabController(
        initialIndex: 1,
        length: 2,
        child: Scaffold(
          appBar: const PreferredSize(preferredSize: Size.fromHeight(kToolbarHeight),
            child: TabBar(tabs: <Widget>[Tab(text: "Tab 1"),
              Tab(text: "Tab 2"),
            ]),
          ),
          body: TabBarView(children: [...],
          ),
        ));
  }
}