[0.4.1] - 2018-04-27

• Improved error handling when a file could not be loaded.

[0.4.0] - 2018-04-14

• Added optional headers.
• Changed to Dart 2.0
• Fixed bug when updating widget with new url

[0.3.0] - 2018-02-09

• Added CachedNetworkImage with placeholder and error widgets.

[0.2.1] - 2018-01-08

• Moved from OneFrameImageStreamCompleter to MultiFrameImageStreamCompleter.
• Updated CacheManager dependency for critical bug fix.

[0.2.0] - 2017-12-29

• Breaking change Removed CachedNetworkImage. From now on only the ImageProvider is supported. For a placeholder use FadeInImage. See also "Fallback for Network Images".
• Moved CacheManager to a separate library for a more generic purpose.

[0.1.0] - 2017-12-21

• Breaking change. Upgraded to Gradle 4.1 and Android Studio Gradle plugin 3.0.1. Older Flutter projects need to upgrade their Gradle setup as well in order to use this version. Instructions can be found here.

[0.0.2] - 10 December 2017

Added an ImageProvider and improved documentation

[0.0.1] - 2 December 2017

Initial release, should be polished

example/lib/main.dart

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

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'CachedNetworkImage Demo',
      theme: new 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 press Run > Flutter Hot Reload in IntelliJ). Notice that the
        // counter didn't reset back to zero; the application is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: new MyHomePage(title: 'CachedNetworkImage'),
    );
  }
}

class MyHomePage extends StatelessWidget {
  final String title;
  MyHomePage({this.title});

  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: new Text(title),
      ),
      body:
      new SingleChildScrollView(child:
      new Center(
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[

            _sizedContainer(
              new Image(
                image: new CachedNetworkImageProvider("http://via.placeholder.com/350x150"),
              ),
            ),

            _sizedContainer(
              new CachedNetworkImage(
                imageUrl: "http://via.placeholder.com/200x150",
              ),
            ),

            _sizedContainer(
              new CachedNetworkImage(
                imageUrl: "not a valid uri",
                placeholder: new CircularProgressIndicator(),
                errorWidget: new Icon(Icons.error),
              ),
            ),

            _sizedContainer(
              new CachedNetworkImage(
                imageUrl: "http://via.placeholder.com/350x200",
                placeholder: new CircularProgressIndicator(),
                errorWidget: new Icon(Icons.error),
                fadeOutDuration: new Duration(seconds: 1),
                fadeInDuration: new Duration(seconds: 3),
              ),
            ),

          ],
        ),
      ),
      ),
    );
  }

  Widget _sizedContainer(Widget child) {
    return new SizedBox(
      width: 300.0,
      height: 150.0,
      child: new Center(
        child: child,
      ),
    );
  }
}