如果有人遇到相同的问题，我要解决的方法是使用：https
:
//pub.dartlang.org/packages/extended_nested_scroll_view
例：
class _MatchFragmentState extends State<MatchFragment> with TickerProviderStateMixin { TabController primaryTC; @override void initState() { primaryTC = new TabController(length: 3, vsync: this); super.initState(); }@overrideWidget build(BuildContext context) {final double statusBarHeight = MediaQuery.of(context).padding.top;//var tabBarHeight = primaryTabBar.preferredSize.height;var pinnedHeaderHeight =//statusBar heightstatusBarHeight + //pinned SliverAppBar height in header kToolbarHeight;return Scaffold( body: NestedScrollViewRefreshIndicator( onRefresh: onRefresh, child: ExtendedNestedScrollView( headerSliverBuilder: (c, f) { return <Widget>[ SliverAppBar( pinned: true, expandedHeight: kExpandedHeight, title: Text('Title'), flexibleSpace: FlexibleSpaceBar( background: Image.network( "https://images.pexels.com/photos/396547/pexels-photo-396547.jpeg?auto=compress&cs=tinysrgb&h=350", fit: BoxFit.cover, )) ), ) ]; }, pinnedHeaderSliverHeight: pinnedHeaderHeight, keepOnlyOneInnerNestedScrollPositionActive: true, body: Column( children: <Widget>[ TabBar( controller: primaryTC, labelColor: Colors.black87, unselectedLabelColor: Colors.grey, tabs: [ Tab(text: "Tab1"), Tab(text: "Tab2"), Tab(text: "Tab3"), ], ), Expanded( child: TabBarView( controller: primaryTC, children: <Widget>[ new Tab1Screen(), new Tab2Screen(), new Tab3Screen() ], ), ) ], ) ), ) ); }}Future<Null> onRefresh() { final Completer<Null> completer = new Completer<Null>(); new Timer(const Duration(seconds: 1), () { completer.complete(null); }); return completer.future.then((_) {});}
