gistfile1.txt

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

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

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

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  final String title;

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

  @override
  State<StatefulWidget> createState() => MyHomePageState();
}

class MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: DefaultTabController(
        length: 2,
        child: Container(
          color: Colors.grey.shade50,
          child: Column(
            children: [
              buildAppBar(context),
              Expanded(
                child: NestedScrollView(
                  headerSliverBuilder:
                      (BuildContext context, bool innerBoxIsScrolled) {
                    return [
                      SliverToBoxAdapter(
                        child: Container(
                          child: buildHeader(context),
                        ),
                      ),
                    ];
                  },
                  body: Column(
                    children: [
                      buildTabBar(context),
                      Expanded(
                          child: TabBarView(
                        children: [
                          buildView1(context),
                          buildView2(context),
                        ],
                      ))
                    ],
                  ),
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }

  buildAppBar(BuildContext context) {
    return Container(
      height: 100,
      color: const Color.fromARGB(255, 0, 49, 90),
    );
  }

  buildAvatar(BuildContext context) {
    return Container(
      width: 180,
      height: 180,
      margin: const EdgeInsets.symmetric(vertical: 16),
      color: Colors.blueGrey,
      child: const Center(
        child: Text("Avatar"),
      ),
    );
  }

  buildDisplayName(BuildContext context) {
    return Center(
      child: Container(
        margin: const EdgeInsets.only(bottom: 8),
        width: 120,
        height: 30,
        color: Colors.blueGrey,
      ),
    );
  }

  buildTabBar(BuildContext context) {
    return Container(
      color: Colors.grey,
      child: Row(
        children: const [
          TabBar(
            labelPadding: EdgeInsets.symmetric(vertical: 0, horizontal: 24),
            isScrollable: true,
            tabs: [
              Tab(
                text: 'Tab 1111111',
              ),
              Tab(
                text: 'Tab 2',
              ),
            ],
          ),
        ],
      ),
    );
  }

  buildHeader(BuildContext context) {
    return Column(
      children: [
        buildAvatar(context),
        buildDisplayName(context),
      ],
    );
  }

  buildView1(BuildContext context) {
    return Container(
      padding: EdgeInsets.zero,
      child: MediaQuery.removePadding(
        context: context,
        removeTop: true,
        child: ListView(
          children: [
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
            buildListItem(context, color: Colors.blueGrey.shade200),
            buildListItem(context),
          ],
        ),
      ),
    );
  }

  buildView2(BuildContext context) {
    return Container();
  }

  buildListItem(BuildContext context,
      {double height = 64, Color color = Colors.blueGrey}) {
    return Container(height: height, color: color);
  }
}