import 'dart:math';
import 'package:confetti/confetti.dart';
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
// This is the theme of your application.
//
// Try running your application with "flutter run". You'll see the
// application has a blue toolbar. Then, without quitting the app, try
// changing the primarySwatch below to Colors.green and then invoke
// "hot reload" (press "r" in the console where you ran "flutter run",
// or simply save your changes to "hot reload" in a Flutter IDE).
// Notice that the counter didn't reset back to zero; the application
// is not restarted.
primarySwatch: Colors.blue,
// This makes the visual density adapt to the platform that you run
// the app on. For desktop platforms, the controls will be smaller and
// closer together (more dense) than on mobile platforms.
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
ConfettiController controllerTopCenter;
@override
void initState() {
super.initState();
setState(() {
initController();
});
}
void initController() {
controllerTopCenter =
ConfettiController(duration: const Duration(seconds: 1));
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.pink[50],
appBar: AppBar(
backgroundColor: Colors.cyan,
title: Text("Flutter Confetti Animation Demo"),
automaticallyImplyLeading: false,
),
body: SafeArea(
child: Stack(
children: <Widget>[
buildConfettiWidget(controllerTopCenter, pi / 1),
buildConfettiWidget(controllerTopCenter, pi / 4),
Align(
alignment: Alignment.center,
child: Column(
children: <Widget>[
Image.asset(
"assets/logo.png",
width: MediaQuery
.of(context)
.size
.width * 0.5,
height: MediaQuery
.of(context)
.size
.height * 0.5,
),
],
),
),
buildButton()
],
),
),
);
}
Align buildButton() {
return Align(
alignment: Alignment.bottomCenter,
child: Padding(
padding: const EdgeInsets.symmetric(vertical: 100),
child: RaisedButton(
onPressed: () {
controllerTopCenter.play();
},
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(20)),
color: Colors.red,
textColor: Colors.white,
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Text(
"Congratulations!",
style: TextStyle(
fontSize: 30,
color: Colors.white,
),
),
),
),
),
);
}
Align buildConfettiWidget(controller, double blastDirection) {
return Align(
alignment: Alignment.topCenter,
child: ConfettiWidget(
maximumSize: Size(30, 30),
shouldLoop: false,
confettiController: controller,
blastDirection: blastDirection,
blastDirectionality: BlastDirectionality.directional,
maxBlastForce: 20,
// set a lower max blast force
minBlastForce: 8,
// set a lower min blast force
emissionFrequency: 1,
numberOfParticles: 8,
// a lot of particles at once
gravity: 1,
),
);
}
}
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