（Flutter）侧浮动顶栏

CODE

import 'package:flutter/material.dart';

void main() {
  return runApp(MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  const MyHomePage({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.blue[200],
      body: CustomScrollView(
        slivers: [
          SliverAppBar(
            floating: false,
            pinned: true,
            leading: Icon(Icons.menu),
            expandedHeight: 200,
            flexibleSpace: FlexibleSpaceBar(
              background: Container(
                height: 50,
                width: 50,
                color: Colors.red,
              ),
              title: Text("My App"),
            ),
          ),
          SliverToBoxAdapter(
            child: Padding(
              padding: const EdgeInsets.all(8.0),
              child: ClipRRect(
                borderRadius: BorderRadius.circular(20),
                child: Container(
                  height: 200,
                  color: Colors.blue[300],
                ),
              ),
            ),
          ),
          SliverToBoxAdapter(
            child: Padding(
              padding: const EdgeInsets.all(8.0),
              child: ClipRRect(
                borderRadius: BorderRadius.circular(20),
                child: Container(
                  height: 200,
                  color: Colors.blue[300],
                ),
              ),
            ),
          ),
          SliverToBoxAdapter(
            child: Padding(
              padding: const EdgeInsets.all(8.0),
              child: ClipRRect(
                borderRadius: BorderRadius.circular(20),
                child: Container(
                  height: 200,
                  color: Colors.blue[300],
                ),
              ),
            ),
          ),
          SliverToBoxAdapter(
            child: Padding(
              padding: const EdgeInsets.all(8.0),
              child: ClipRRect(
                borderRadius: BorderRadius.circular(20),
                child: Container(
                  height: 200,
                  color: Colors.blue[300],
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}

预览