flutter scroll appbar
class _SomePageState extends State<SomePage> with SingleTickerProviderStateMixin { late final TabController _tabController; @override void initState() { super.initState(); _tabController = TabController(length: 2, vsync: this); } @override Widget build(BuildContext context) { return Scaffold( body: NestedScrollView( headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) { return <Widget>[ SliverAppBar( title: Text('Weight Tracker'), pinned: true, floating: true, forceElevated: innerBoxIsScrolled, bottom: TabBar( tabs: <Tab>[ Tab(text: 'STATISTICS'), Tab(text: 'HISTORY'), ], controller: _tabController, ), ), ]; }, body: TabBarView( controller: _tabController, children: <Widget>[ StatisticsPage(), HistoryPage(), ], ), ), ); } }
