Flutter FlatButton

import 'package:flutter/material.dart';

void main() => runApp(new MaterialApp(
      title: "FlatButton",
      home: LayoutDemo(),
    ));

class LayoutDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return new Scaffold(
      appBar: AppBar(
        title: Text("FlatButton"),
      ),
      body: Center(
          child: FlatButton(
        onPressed: () {
          print("点我");
        },
        child: Text(
          'FlatButton',
          style: TextStyle(fontSize: 24),
        ),
      )),
    );
  }
}