Build Mobile Experiences

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomeScreen(),
    );
  }
}

class HomeScreen extends StatefulWidget {
  @override
  _HomeScreenState createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  double _scale = 1.0;
  
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: GestureDetector(
          onTap: () {
            setState(() {
              _scale = _scale == 1.0 ? 1.5 : 1.0;
            });
          },
          child: AnimatedContainer(
            duration: Duration(milliseconds: 300),
            transform: Matrix4.identity()..scale(_scale),
            child: Container(
              width: 150,
              height: 150,
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  colors: [
                    Colors.orange[400]!,
                    Colors.amber,
                  ],
                ),
                borderRadius: BorderRadius.circular(24),
              ),
              child: Icon(
                Icons.flutter_dash,
                size: 60,
                color: Colors.white,
              ),
            ),
          ),
        ),
      ),
    );
  }
}