import 'package:flutter/material.dart';

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

  @override
  State<AnimatedSwitcherWidget> createState() => _AnimatedSwitcherWidgetState();
}

class _AnimatedSwitcherWidgetState extends State<AnimatedSwitcherWidget> {
  int _count = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("AnimatedSwitcher Widget"),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            AnimatedSwitcher(
              duration: const Duration(milliseconds: 500),
              child: Text(
                '$_count',
                key: ValueKey(_count),
                style: const TextStyle(
                  fontSize: 40,
                ),
              ),
              transitionBuilder: (Widget child, Animation<double> animation) {
                return ScaleTransition(scale: animation, child: child);
              },
            ),
            ElevatedButton(
              onPressed: () {
                setState(() {
                  _count += 1;
                });
              },
              child: const Text('Add'),
            )
          ],
        ),
      ),
    );
  }
}