ezanimation 0.4.1

Easy Animations - No Controllers, No Tickers, Only the necessary parts.

example/lib/main.dart

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

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

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
        // This makes the visual density adapt to the platform that you run
        // the app on. For desktop platforms, the controls will be smaller and
        // closer together (more dense) than on mobile platforms.
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  EzAnimation animation = EzAnimation(10.0, 100.0, Duration(seconds: 2), reverseCurve: Curves.bounceInOut);

  @override
  void initState() {
    super.initState();
    animation.start();
    animation.addStatusListener((status) {
      if (status == AnimationStatus.completed) {
        animation.reverse();
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: AnimatedBuilder(
          animation: animation,
          builder: (context, snapshot) {
            return Center(
              child: Container(
                width: animation.value,
                height: animation.value,
                color: Colors.blue,
              ),
            );
          }
      ),
    );
  }
}