AnimatedScale
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
const MyHomePage({Key? key, required this.title}) : super(key: key);
final String title;
@override
State<MyHomePage> createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
double scale = 1.0;
void _changeScale() {
setState(() => scale = scale == 1.0 ? 3.0 : 1.0);
}
@override
Widget build(BuildContext context) {
return Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
child: const Text('Scale Logo'),
onPressed: _changeScale,
),
Padding(
padding: const EdgeInsets.all(50),
child: AnimatedScale(
scale: scale,
duration: const Duration(seconds: 2),
child: const FlutterLogo(),
),
),
],
);
}
}