Sebelumnya baca tutorial : LATIHAN FLUTTER WEEK#1 : COLOR CLASS
main.dart
import 'package:flutter/material.dart'; void main(){ runApp( new MaterialApp( home: new Widget1(), ) ); }
class Widget1 extends StatelessWidget{ @override Widget build(BuildContext context) { return new Scaffold( backgroundColor: Colors.yellow[200], appBar: new AppBar( title: new Text("FLutter App #1"), backgroundColor: Color(0xFFFF7043), ), body: new Center( child: new Text( "meetAp Flutter Basic", style: TextStyle(color: Colors.redAccent[400]), ), ), floatingActionButton: FloatingActionButton( onPressed: null, tooltip: 'Camera', child: Icon(Icons.camera), backgroundColor: Colors.blue[400], ), floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked, ); } }

Semoga Bermanfaat