Flutter學習-silver及SliverFillRemaining使用

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: CustomScrollView(
        slivers: [
          SliverToBoxAdapter(
            child: Column(
              children: [
                FlutterLogo(
                  size: 300,
                ),
                FlutterLogo(
                  size: 300,
                ),
                FlutterLogo(
                  size: 300,
                ),
              ],
            ),
          ),
          SliverFillRemaining(
            hasScrollBody: false,
            child: Align(
              alignment: Alignment.bottomCenter,
              child: Padding(
                padding: EdgeInsets.all(32),
                child: ElevatedButton(
                  onPressed: () {},
                  child: Text('下方按鈕'),
                ),
              ),
            ),
          )
        ],
      ),
    );
  }
}