SliverAppBar + FlexibleSpaceBar

main.dart

import 'package:flutter/material.dart';

void main() => runApp(MaterialApp(home: MyApp()));

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: CustomScrollView(
        physics: const BouncingScrollPhysics(),
        slivers: <Widget>[
          SliverAppBar(
            stretch: true,
            floating: false,
            pinned: true,
            snap: false,
            onStretchTrigger: () {
              // Function callback for stretch
              return;
            },
            expandedHeight: MediaQuery.of(context).size.height,
            flexibleSpace: FlexibleSpaceBar(
              stretchModes: <StretchMode>[
                StretchMode.zoomBackground,
                StretchMode.blurBackground,
                StretchMode.fadeTitle,
              ],
              centerTitle: true,
              title: const Text('Flight Report'),
              background: Stack(
                fit: StackFit.expand,
                children: [
                  Image.network(
                    'https://flutter.github.io/assets-for-api-docs/assets/widgets/owl-2.jpg',
                    fit: BoxFit.cover,
                  ),
                  const DecoratedBox(
                    decoration: BoxDecoration(
                      gradient: LinearGradient(
                        begin: Alignment(0.0, 0.5),
                        end: Alignment(0.0, 0.0),
                        colors: <Color>[
                          Color(0x60000000),
                          Color(0x00000000),
                        ],
                      ),
                    ),
                  ),
                ],
              ),
            ),
          ),
          SliverList(
            delegate: SliverChildBuilderDelegate(
              (BuildContext context, int index) {
                return ListTile(
                  leading: Icon(Icons.wb_sunny),
                  title: Text('Day ${index+1}'),
                  subtitle: Text(
                    'sunny, h: ${62+index}, l: ${54+index}',
                  ),
                );
              },
              childCount: 30,
            ),
          ),
        ],
      ),
    );
  }
}