flutter 笔记 Hello World

flutter 笔记Hello World

import 'package:flutter/material.dart';
main() {
  // 1.runApp函数
  runApp(
      MaterialApp(
          debugShowCheckedModeBanner: false,
          home: Scaffold(
            appBar: AppBar(
              title: Text("Hello World"),
            ),
            body: Center(
              child: Text(
                "Hello World",
                style: TextStyle(
                    fontSize: 40,
                    color: Colors.red
                ),
              ),
            ),
          )
      )
  );
}