플러터챌린지 7일차 심화문제 - 김구봉

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Challenge',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key});

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> with TickerProviderStateMixin {
  List<Widget> children = [];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Stack(
        children: children,
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          AnimationController controller = AnimationController(
            vsync: this,
            duration: const Duration(seconds: 3),
          );

          controller.forward().whenComplete(() {
            controller.reset();
            controller.dispose();
            children.removeAt(0);

            setState(() {});
          });

          children.add(
            SlideTransition(
              position: Tween<Offset>(
                begin: const Offset(12.5, 30),
                end: const Offset(12, 15),
              ).animate(controller),
              child: const Icon(Icons.favorite),
            ),
          );

          setState(() {});
        },
        child: const Icon(Icons.favorite),
      ),
    );
  }
}