🌎 Instagram 프로필 레이아웃 그리기

우선 위와 같은 화면을 그리기 위해서 Scaffold 내에서 두가지로 나눈다.
1. AppBar
2. Body

그리고 Body - Column 내에서 크게 네가지 영역으로 나누었다.
1. 프로필 영역
2. Text 영역
3. 버튼 영역
4. Tab 영역

📍 App Bar

appBar: AppBar(
        backgroundColor: Colors.white,
        title: Text(widget.title, style: TextStyle(color: Colors.black)),
        leading: IconButton(icon: Icon(Icons.arrow_back_ios, color: Colors.blue), onPressed: () {}),
        actions: [
          IconButton(onPressed: () {}, icon: Icon(Icons.menu, color: Colors.blue))
        ],
      ),

📍 프로필 영역

Expanded(child: Row(
            children: [
              Expanded(child: CircleAvatar(
                radius: 70,
                backgroundImage: AssetImage("images/img1.jpeg"),
              ),flex: 1,),
              Expanded(
                child: SizedBox(
                  height: 100,
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: [
                      Text(_name, style : TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
                      Text(_job, style : TextStyle(fontSize: 18)),
                      Text(_detail, style : TextStyle(fontSize: 15)),
                    ],
                  ),
                ),
                flex: 1,
              )
            ],
          ),
            flex: 2,
          ),

📍 Post, Likes, Shares 영역

Expanded(
            child: Row(
              children: [
                Expanded(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text("50"),
                      Text("Posts")
                    ],
                  ),
                ),
                Container(height: 50, width: 2, color: Colors.grey),
                Expanded(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text("10"),
                      Text("Likes")
                    ],
                  ),
                ),
                Container(height: 50, width: 2, color: Colors.grey),
                Expanded(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text("3"),
                      Text("Shares")
                    ],
                  ),
                )
              ],
            ),
            flex: 1,
          ),

📍 버튼 영역

Expanded(
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: [
                InkWell(
                  child: Container(
                    height: 50,
                    width: 180,
                    child: Text("Follow",
                    style: Theme.of(context).textTheme.caption?.copyWith(
                      color: Colors.white,
                      fontWeight: FontWeight.w500
                    ),),
                    padding: EdgeInsets.all(10),
                    alignment: Alignment.center,
                    decoration: BoxDecoration(
                      color: Colors.blueAccent,
                      borderRadius: BorderRadius.circular(10),
                    ),
                  ),
                  onTap: () {},
                ),
                InkWell(
                  child: Container(
                    height: 50,
                    width: 180,
                    child: Text("Message",
                      style: Theme.of(context).textTheme.caption?.copyWith(
                          color: Colors.black,
                          fontWeight: FontWeight.w500
                      ),),
                    padding: EdgeInsets.all(10),
                    alignment: Alignment.center,
                    decoration: BoxDecoration(
                      color: Colors.white,
                      border: Border.all(),
                      borderRadius: BorderRadius.circular(10),
                    ),
                  ),
                  onTap: () {},
                ),
              ],
            ),
            flex: 1,
          ),

📍 Tab 영역

오래걸렸던 부분.. Tab영역!
Tabbar와 TabBarView를 각각 Expanded로 묶어 DefaultTabController로 감싸주었다.

Expanded(child: DefaultTabController(
                length: 2,
                initialIndex: 0,
                child: Column(
                  children: <Widget> [
                    Expanded(child: TabBar())
                    Expanded(child: TabBarView())
                    ...

요런식으로!

👉🏼 TabBar

Expanded(
                      child: TabBar(
                        tabs: <Widget> [
                          new Tab(
                            icon: const Icon(Icons.directions_car, color: Colors.black),
                          ),
                          new Tab(
                            icon: const Icon(Icons.train, color: Colors.black),
                          )
                        ]
                      ),flex: 1,
                    ),

👉🏼 TabBarView

Expanded(
                      child: TabBarView(
                        children: <Widget>[
                          new Container(
                            child: GridView.count(
                              padding: const EdgeInsets.all(20),
                              crossAxisSpacing: 10,
                              mainAxisSpacing: 10,
                              crossAxisCount: 3,
                              children: <Widget> [
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                              ],
                            ),
                          ),
                          new Container(
                            child: GridView.count(
                              padding: const EdgeInsets.all(20),
                              crossAxisSpacing: 10,
                              mainAxisSpacing: 10,
                              crossAxisCount: 3,
                              children: <Widget> [
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                              ],
                            ),
                          )
                        ]
                      ),flex: 5,
                    )

그리고 전체 코드 🥁 🎷 🎻 🎸

import 'package:flutter/material.dart';
import 'package:flutter/src/material/colors.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(
        primaryColor: Colors.black
      ),
      home: const MyHomePage(title: 'Profile'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

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

class _MyHomePageState extends State<MyHomePage> {

  String _name = "Soyun Jo";
  String _job = "Engineer";
  String _detail = "Flutter Developing";


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      appBar: AppBar(
        backgroundColor: Colors.white,
        title: Text(widget.title, style: TextStyle(color: Colors.black)),
        leading: IconButton(icon: Icon(Icons.arrow_back_ios, color: Colors.blue), onPressed: () {}),
        actions: [
          IconButton(onPressed: () {}, icon: Icon(Icons.menu, color: Colors.blue))
        ],
      ),
      body:
      Column(
        children: [
          Expanded(child: Row(
            children: [
              Expanded(child: CircleAvatar(
                radius: 70,
                backgroundImage: AssetImage("images/img1.jpeg"),
              ),flex: 1,),
              Expanded(
                child: SizedBox(
                  height: 100,
                  child: Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                    children: [
                      Text(_name, style : TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
                      Text(_job, style : TextStyle(fontSize: 18)),
                      Text(_detail, style : TextStyle(fontSize: 15)),
                    ],
                  ),
                ),
                flex: 1,
              )
            ],
          ), flex: 2,
          ),
          Expanded(
            child: Row(
              children: [
                Expanded(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text("50"),
                      Text("Posts")
                    ],
                  ),
                ),
                Container(height: 50, width: 2, color: Colors.grey),
                Expanded(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text("10"),
                      Text("Likes")
                    ],
                  ),
                ),
                Container(height: 50, width: 2, color: Colors.grey),
                Expanded(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text("3"),
                      Text("Shares")
                    ],
                  ),
                )
              ],
            ),
            flex: 1,
          ),
          Expanded(
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceEvenly,
              children: [
                InkWell(
                  child: Container(
                    height: 50,
                    width: 180,
                    child: Text("Follow",
                    style: Theme.of(context).textTheme.caption?.copyWith(
                      color: Colors.white,
                      fontWeight: FontWeight.w500
                    ),),
                    padding: EdgeInsets.all(10),
                    alignment: Alignment.center,
                    decoration: BoxDecoration(
                      color: Colors.blueAccent,
                      borderRadius: BorderRadius.circular(10),
                    ),
                  ),
                  onTap: () {},
                ),
                InkWell(
                  child: Container(
                    height: 50,
                    width: 180,
                    child: Text("Message",
                      style: Theme.of(context).textTheme.caption?.copyWith(
                          color: Colors.black,
                          fontWeight: FontWeight.w500
                      ),),
                    padding: EdgeInsets.all(10),
                    alignment: Alignment.center,
                    decoration: BoxDecoration(
                      color: Colors.white,
                      border: Border.all(),
                      borderRadius: BorderRadius.circular(10),
                    ),
                  ),
                  onTap: () {},
                ),
              ],
            ),
            flex: 1,
          ),
          Expanded(
              child: DefaultTabController(
                length: 2,
                initialIndex: 0,
                child: Column(
                  children: <Widget> [
                    Expanded(
                      child: TabBar(
                        tabs: <Widget> [
                          new Tab(
                            icon: const Icon(Icons.directions_car, color: Colors.black),
                          ),
                          new Tab(
                            icon: const Icon(Icons.train, color: Colors.black),
                          )
                        ]
                      ),flex: 1,
                    ),
                    Expanded(
                      child: TabBarView(
                        children: <Widget>[
                          new Container(
                            child: GridView.count(
                              padding: const EdgeInsets.all(20),
                              crossAxisSpacing: 10,
                              mainAxisSpacing: 10,
                              crossAxisCount: 3,
                              children: <Widget> [
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                              ],
                            ),
                          ),
                          new Container(
                            child: GridView.count(
                              padding: const EdgeInsets.all(20),
                              crossAxisSpacing: 10,
                              mainAxisSpacing: 10,
                              crossAxisCount: 3,
                              children: <Widget> [
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                                Expanded(
                                  child: Ink.image(image: AssetImage("images/img1.jpeg")),
                                ),
                              ],
                            ),
                          )
                        ]
                      ),flex: 5,
                    )
                  ],
                ),
              ),
              flex: 5,
          ),
        ],
      )
    );
  }
}

아직은 Flutter로 화면을 그린지 얼마 되지 않아
가독성 있는 코드를 작성하기 보다는
우선 장황하더라도 하드코딩 + 빠르게 화면 그리기에 중점을 두고 있다.

화면을 다 그린 와중에도 오류가....ㅎ 넘쳐버려

후에, 보다 더 복잡한 그림을 제대로 그리게 된다면, 재사용성, 가독성 있는 코드를 짜는 방법도 점차 익혀 나가야겠다. 😭