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main91.dart
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main91.dart
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// Ripple Effect animation
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
colorScheme: ColorScheme.fromSeed(seedColor: Colors.yellow),
useMaterial3: true,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({super.key, required this.title});
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> with SingleTickerProviderStateMixin{
late Animation _animation;
late AnimationController _animationControllertroller;
var listRadius = [150.0, 200.0, 250.0, 300.0, 350.0];
@override
void initState() {
// TODO: implement initState
super.initState();
_animationControllertroller = AnimationController(vsync: this, duration: Duration(seconds: 4), lowerBound: 0.5);
_animation = Tween(begin: 0.0,end: 1.0).animate(_animationControllertroller);
_animationControllertroller.addListener(() {
setState(() {
});
});
_animationControllertroller.forward();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
backgroundColor: Theme.of(context).colorScheme.inversePrimary,
title: Text(widget.title),
),
body:Center(
child: Stack(
alignment: Alignment.center,
children:
listRadius.map((radius) =>
Container(
width: radius*_animation.value,
height: radius*_animation.value,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: Colors.blue.withOpacity(1.0 - _animation.value),
),
)).toList()
),
)
);
}
}