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flutter - How to create a bounded scrollable TabBarView

I need to implement the following layout in Flutter.

Layout

When the user scrolls, I want the entire layout to scroll (hiding the header and tab bar). However, I can't nest a TabBarView inside a ListView since the TabBarView doesn't have a bounded height and ListViews don't provide a bounded height to their children.

I've already seen these questions, but all of them have unsatisfactory answers for this use case:

See Question&Answers more detail:os

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class SliverWithTabBar extends StatefulWidget {
  @override
  _SliverWithTabBarState createState() => _SliverWithTabBarState();
}

class _SliverWithTabBarState extends State<SliverWithTabBar> with SingleTickerProviderStateMixin {
  TabController controller;

  @override
  void initState() {
    super.initState();
    controller = TabController(length: 3, vsync: this);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: NestedScrollView(
        headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
          return [
            SliverAppBar(
              pinned: false,
              backgroundColor: Colors.white,
              flexibleSpace: FlexibleSpaceBar(
                collapseMode: CollapseMode.pin,
                background: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Container(
                      height: 200.0,
                      width: double.infinity,
                      color: Colors.grey,
                      child: FlutterLogo(),
                    ),
                    Padding(
                      padding: const EdgeInsets.all(10.0),
                      child: Text(
                        'Business Office',
                        style: TextStyle(fontSize: 25.0),
                        textAlign: TextAlign.left,
                      ),
                    ),
                    Padding(
                      padding: const EdgeInsets.all(10.0),
                      child: Text(
                        'Open now
Street Address, 299
City, State',
                        style: TextStyle(fontSize: 15.0),
                        textAlign: TextAlign.left,
                      ),
                    ),
                    Padding(
                      padding: const EdgeInsets.only(right: 10.0),
                      child: Row(
                        mainAxisAlignment: MainAxisAlignment.end,
                        children: <Widget>[
                          Icon(Icons.share),
                          Padding(
                            padding: const EdgeInsets.only(left: 10.0),
                            child: Icon(Icons.favorite),
                          ),
                        ],
                      ),
                    )
                  ],
                ),
              ),
              expandedHeight: 380.0,
              bottom: TabBar(
                indicatorColor: Colors.black,
                labelColor: Colors.black,
                tabs: [
                  Tab(text: 'POSTS'),
                  Tab(text: 'DETAILS'),
                  Tab(text: 'FOLLOWERS'),
                ],
                controller: controller,
              ),
            )
          ];
        },
        body: ListView.builder(
          itemCount: 100,
          itemBuilder: (BuildContext context, int index) {
            return Card(
              color: index % 2 == 0 ? Colors.blue : Colors.green,
              child: Container(
                alignment: Alignment.center,
                width: double.infinity,
                height: 100.0,
                child: Text(
                  'Flutter is awesome',
                  style: TextStyle(fontSize: 18.0),
                ),
              ),
            );
          },
        ),
      ),
    );
  }
}

You should look for Sliver widgets to achieve NestedScrollView.

That gives you a headerSliverBuilder property where you can actually fit some headers that you might hide or pin on the top of the screen when the body widget is scrolled, in this particular example, a ListView.

You might want to take a look to the RenderSliver documentation.


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