animated 1.0.1

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Animated #

Animated is a very simple (yet powerful) implicit animation library made for Flutter.

Its goal is to be able to create a smooth animation between two values when an AnimatedContainer is not enough.

@override
Widget build(BuildContext context) {
  return Animated(
    value: 1.2,
    curve: Curves.easeInOut,
    duration: Duration(milliseconds: 300),
    builder: (context, child, animation) => Transform.scale(
      scale: animation.value,
      child: child,
    ),
    child: Container(
      width: 40,
      height: 40,
      color: Colors.red,
    ),
  );
}

In this example, whenever the value changes, the builder function will be called at each frame, from the old value to the new one.

Any widget that is not modified by the animation should be moved to the child property for optimization.

1.0.1 #

Added example.

1.0.0 #

Initial release.

example/main.dart

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

class Example extends StatefulWidget {
  @override
  _ExampleState createState() => _ExampleState();
}

class _ExampleState extends State<Example> {
  bool scaled = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: GestureDetector(
        onTap: () {
          setState(() {
            scaled = !scaled;
          });
        },
        child: Animated(
          value: scaled ? 1 : 0.5,
          curve: Curves.easeInOut,
          duration: Duration(milliseconds: 300),
          builder: (context, child, animation) => Transform.scale(
            scale: animation.value,
            child: child,
          ),
          child: Container(
            width: 40,
            height: 40,
            color: Colors.red,
          ),
        ),
      ),
    );
  }
}

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  animated: ^1.0.1

2. Install it

You can install packages from the command line:

with Flutter:


$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


import 'package:animated/animated.dart';
  
Popularity:
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31
Health:
Code health derived from static analysis. [more]
100
Maintenance:
Reflects how tidy and up-to-date the package is. [more]
100
Overall:
Weighted score of the above. [more]
65
Learn more about scoring.

We analyzed this package on Nov 11, 2019, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

  • Dart: 2.6.0
  • pana: 0.12.21
  • Flutter: 1.9.1+hotfix.6

Platforms

Detected platforms: Flutter

References Flutter, and has no conflicting libraries.

Dependencies

Package Constraint Resolved Available
Direct dependencies
Dart SDK >=2.1.0 <3.0.0
flutter 0.0.0
Transitive dependencies
collection 1.14.11 1.14.12
meta 1.1.7 1.1.8
sky_engine 0.0.99
typed_data 1.1.6
vector_math 2.0.8
Dev dependencies
flutter_test