Compatibility issue with flutter_sticky_header

[pgulegin]

First off, I just wanted to say that I really enjoy this plugin, thank you for your development effort!

I am having a bit of an issue getting it to work correctly with another plugin titled flutter_sticky_header: https://pub.dartlang.org/packages/flutter_sticky_header

It appears that the title is sticky-ing to a location that is hidden away. Quick example:

import 'package:flutter/material.dart';
import 'package:flutter_sticky_header/flutter_sticky_header.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';

class TestView extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _State();
  }
}

class _State extends State<TestView> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(
          'Playground',
        ),
      ),
      body: SafeArea(
        child: SmartRefresher(
          child: CustomScrollView(
            slivers: <Widget>[
              SliverStickyHeader(
                header: Container(
                  padding: EdgeInsets.only(
                    left: 12.0,
                    top: 4.0,
                    right: 12.0,
                    bottom: 4.0,
                  ),
                  color: Colors.white,
                  child: Text(
                    'Title0',
                    style: TextStyle(
                      color: Colors.grey,
                      fontSize: 14.0,
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                ),
                sliver: SliverList(
                  delegate: SliverChildListDelegate(
                    [
                      Container(
                        height: 200.0,
                        color: Colors.red,
                      ),
                      Container(
                        height: 200.0,
                        color: Colors.blue,
                      ),
                      Container(
                        height: 200.0,
                        color: Colors.red,
                      ),
                      Container(
                        height: 200.0,
                        color: Colors.blue,
                      ),
                    ],
                  ),
                ),
              ),
              SliverStickyHeader(
                header: Container(
                  padding: EdgeInsets.only(
                    left: 12.0,
                    top: 4.0,
                    right: 12.0,
                    bottom: 4.0,
                  ),
                  color: Colors.white,
                  child: Text(
                    'Title1',
                    style: TextStyle(
                      color: Colors.grey,
                      fontSize: 14.0,
                      fontWeight: FontWeight.bold,
                    ),
                  ),
                ),
                sliver: SliverList(
                  delegate: SliverChildListDelegate(
                    [
                      Container(
                        height: 200.0,
                        color: Colors.red,
                      ),
                      Container(
                        height: 200.0,
                        color: Colors.blue,
                      ),
                      Container(
                        height: 200.0,
                        color: Colors.red,
                      ),
                      Container(
                        height: 200.0,
                        color: Colors.blue,
                      ),
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

I understand that this is not necessarily a bug with your package, I was just hoping to get some guidance.

Thank you for your time!

[peng8350]

Since the 1.3.0 update, I have removed Positioned to implement the drop-down. Just tested, this problem has been fixed.