기본 작성 & Hello World

import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        body: , //화면
      ),
    ),
  );
}




import 'package:flutter/material.dart';

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.blueAccent,
        body: Center(
          child: Text(
            'Hello World',
            style: TextStyle(
              color: Colors.white,
              fontSize: 20.0
            ),
          ),
        ), //화면
      ),
    ),
  );
}

출력화면