flutter_프로젝트/0_초보_코드모음

flutter 코드 모음 - 그림을 표시 + 버튼을 누르면 회전

studyapps 2025. 3. 15. 17:12

 

이미지를 표시하고, 아래 버튼을 누르면 회전하게 하는 코드

import 'package:flutter/material.dart';
import 'dart:math';

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 const MaterialApp(
      home: MyHomePage(),
    );
  }
}

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

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

class _MyHomePageState extends State<MyHomePage>
    with SingleTickerProviderStateMixin {
  double _angle = 0.0;
  late AnimationController _controller;

  @override
  void initState() {
    super.initState();
    _controller = AnimationController(
      duration: const Duration(milliseconds: 100),
      vsync: this,
    );
  }

  void _incrementCounter() {
    setState(() {
      _angle += pi / 50;
      print(_angle);
    });
    _controller.forward(from: 0.0);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('data'),
        leading: const Icon(Icons.abc),
      ),
      body: SingleChildScrollView(
        child: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const Text(
                'You',
              ),
              SizedBox(
                child: AnimatedBuilder(
                  animation: _controller,
                  builder: (context, child) {
                    return Transform.rotate(
                      angle: _angle,
                      child: Image.asset(
                        'repo/images/img1.png',
                      ),
                    );
                  },
                ),
              ),
            ],
          ),
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        backgroundColor: Colors.amber,
        child: const Icon(Icons.add),
      ), 
    );
  }
}