have slivers start behind SliverAppBar

Question

I'm looking for a way to start my slivers start behind my SliverAppBar. The standard way (not slivers) would be to use extendBody: true, and extendBodyBehindAppBar: true,in the Scaffold widget. This doesn't work with slivers because the appbar is part of the scaffold body I suppose. Here's minimum example.. I'd like the Sliverlist to start being the appbar....

                      import 'package:flutter/material.dart';
  
  void main() => runApp(SilverAppBarExample());
  
  class SilverAppBarExample extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
      return MaterialApp(
        home: Scaffold(
          extendBody: true,
                      extendBodyBehindAppBar: true,
          body: CustomScrollView(
            slivers: <Widget>[
              SliverAppBar(
                leading: IconButton(
                  icon: Icon(Icons.filter_1),
                  onPressed: () {
                    // Do something
                  }
                ),
                
                floating: true,
                pinned: true,
                snap: true,
                elevation: 50,
                backgroundColor: Colors.transparent,
                
              ),
              new SliverList(
                  delegate: new SliverChildListDelegate(_buildList(50))
              ),
            ],
          ),
        ),
      );
    }
  
    List _buildList(int count) {
      List<Widget> listItems = List();
  
      for (int i = 0; i < count; i++) {
        listItems.add(new Padding(padding: new EdgeInsets.all(20.0),
            child: new Text(
                'Item ${i.toString()}',
                style: new TextStyle(fontSize: 25.0)
            )
        ));
      }
  
      return listItems;
    }
  }

Answer 1

I solved it using NestedScrollView without SliverOverlapInjector So use it as normal except remove this part

SliverOverlapInjector(
      handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
),

and make sure your app bar is pinned, and not floating