FadeInImage in Flutter

A FadeInImage works with images of any type: in-memory, local assets, or images from the internet.

Use FadeInImage class to display long-loading images, such as NetworkImage.new, so that the image appears on screen with a graceful animation rather than abruptly popping onto the screen.

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To implement the FadeInImage do follow the steps mentioned below.

1.) Create a Scaffold.

2.) Create the FadeInImage as you desire.

3.) Use the transparent_image package for a simple transparent placeholder.

1.) Create a Scaffold. :

Inside Scaffold widgets, it Implements the basic material design visual layout structure. First, initialize the main app as a stateless widget.

This class provides APIs for showing drawers and bottom sheets. We can add the background color inside the scaffold widget.

It also supports special Material Design components, such as Drawers, AppBars, and SnackBars.

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'FadeInImage Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyFadeInImagePage(title: 'FadeInImage Home Page'),
    );
  }
}

void main() {

runApp(const MyApp());

}

class MyApp extends StatelessWidget {

const MyApp({Key? key}) : super(key: key);

// This widget is the root of your application.

@override

Widget build(BuildContext context) {

return MaterialApp(

debugShowCheckedModeBanner: false,

title: 'FadeInImage Demo',

theme: ThemeData(

primarySwatch: Colors.blue,

home: const MyFadeInImagePage(title: 'FadeInImage Home Page'),

);

}

2.) Create the FadeInImage as you desire.

Now, use to create a FadeInImage in the flutter we have to call the constructor of the FadeInImage class provided by the flutter.

class MyFadeInImagePage extends StatefulWidget {
  const MyFadeInImagePage({Key? key, required this.title}) : super(key: key);

  final String title;

  @override
  State<MyFadeInImagePage> createState() => _MyFadeInImageState();
}

class MyFadeInImagePage extends StatefulWidget {

const MyFadeInImagePage({Key? key, required this.title}) : super(key: key);

final String title;

@override

State<MyFadeInImagePage> createState() => _MyFadeInImageState();

}

3.) Use the transparent_image package for a simple transparent placeholder.

If the image emits an ImageInfo synchronously, such as when the image has been loaded and cached, the image is displayed immediately, and the placeholder is never displayed.

When the placeholder changes and the image has not yet emitted an ImageInfo, then the placeholder is resolved to a new ImageStream. If the new ImageStream.key is different, this widget subscribes to the new stream and replaces the displayed image with images emitted by the new stream.

The full code is mentioned below.

class _MyFadeInImageState extends State<MyFadeInImagePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
        ),
        body: Container(
          child: Column(
            children: <Widget>[
              const Padding(
                padding: EdgeInsets.all(8.0),
                child: Text("Image from Network"),
              ),
              FadeInImage.memoryNetwork(
                placeholder: kTransparentImage,
                height: MediaQuery.of(context).size.height / 3,
                fadeInDuration: Duration(seconds: 2),
                image:
                    'https://miro.medium.com/max/3200/1*mMJ3IvaAuMAmqjtyistCog.png',
              ),
              FadeInImage.assetNetwork(
                height: MediaQuery.of(context).size.height / 3,
                fadeInDuration: Duration(seconds: 5),
                fadeInCurve: Curves.bounceIn,
                image:
                    'https://miro.medium.com/max/3200/1*mMJ3IvaAuMAmqjtyistCog.png',
                placeholder: 'assets/images/ic_status.jpg',
              ),
            ],
          ),
        ));
  }
}

class _MyFadeInImageState extends State<MyFadeInImagePage> {

@override

Widget build(BuildContext context) {

return Scaffold(

appBar: AppBar(

title: Text(widget.title),

body: Container(

child: Column(

children: <Widget>[

const Padding(

padding: EdgeInsets.all(8.0),

child: Text("Image from Network"),

FadeInImage.memoryNetwork(

placeholder: kTransparentImage,

height: MediaQuery.of(context).size.height / 3,

fadeInDuration: Duration(seconds: 2),

image:

'https://miro.medium.com/max/3200/1*mMJ3IvaAuMAmqjtyistCog.png',

FadeInImage.assetNetwork(

height: MediaQuery.of(context).size.height / 3,

fadeInDuration: Duration(seconds: 5),

fadeInCurve: Curves.bounceIn,

image:

'https://miro.medium.com/max/3200/1*mMJ3IvaAuMAmqjtyistCog.png',

placeholder: 'assets/images/ic_status.jpg',

));

}

We can now run the app on how to create FadeInImage in a flutter.

Finally, we have implemented the flow of creating FadeInImage in a flutter.

Hope this blog helps you to create FadeInImage in a flutter.

So, I hope it will help you out in understanding and get a brief idea about it.

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For more understanding please can go through this Link:

That’s all, You can enjoy your FadeInImage implementation in a flutter.

Thank you very much.

flutter

Priyanka Kumari 28 April 2023

. . .

FadeInImage in Flutter

To implement the FadeInImage do follow the steps mentioned below.

1.) Create a Scaffold. :

2.) Create the FadeInImage as you desire.

3.) Use the transparent_image package for a simple transparent placeholder.

The full code is mentioned below.

Finally, we have implemented the flow of creating FadeInImage in a flutter.

You can also check these links.

Another mentioned URL.

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