How to Convert RawImage to Extends ImageProvider?

The tech world is evolving constantly at a speedy tempo as a result of new applied sciences rise and fall. Paying sufficient consideration to the newest know-how is extraordinarily vital to maintain this aggressive world.

It’s extremely appropriate for these within the cellular improvement enviornment. Cell app builders ought to come throughout the helpful know-how known as Flutter.

Many firms now use Flutter of their cellular improvement tasks for numerous causes. This know-how is open-source and permits builders to construct native-looking iOS and Android purposes from the identical code base. The usage of the identical code is the first motive behind the recognition of the Flutter.

Flutter supplies many advantages for the app builders, reminiscent of saving money and time, wonderful efficiency, wonderful compatibility, and speedy improvement. Nonetheless, if you wish to take pleasure in the advantages of the Flutter completely, then you possibly can be part of palms with a dependable Flutter development company.

Despite the fact that tons of issues have to be discovered in Flutter, many builders have doubts relating to tips on how to convert RawImage to Extends ImageProvider. In case you are a kind of builders and feeling drained after attempting too many strategies, you possibly can learn this weblog till the top to get the perfect resolution.

What’s RawImage Widget?

RawImage is widget that shows a picture. We are able to align, scale, repeat, and filter on the suitable assigned picture.

Changing RawImage to Extends ImageProvider

Do you may have the RawImage widget? However, do you require the picture supplier reminiscent of AssetImage to construct the DecorationImage from it? If sure, you need to use any of the below-mentioned options. It lets you fulfill your calls for rapidly and simply. As well as, it saves you from the hassles of attempting totally different strategies to get the specified end result.

Even after attempting the next options, don’t hesitate to succeed in the Flutter improvement firm if in case you have any doubt. The knowledgeable workforce gives you sufficient steering and help you in assembly your wants rapidly.

Resolution 1

Among the finest and best options for changing RawImage to Extends ImageProvider goes by way of PNG. It encodes the geometry and pixels of the picture. So, conversion turns into a lot simpler than you suppose. Right here is the pattern code.

Future convert(RawImage rawImage) async {
var byteData = await rawImage.picture.toByteData(
format: ui.ImageByteFormat.png,
return MemoryImage(byteData.buffer.asUint8List());
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Sadly, this technique comes with particular disadvantages, reminiscent of pointless compresses. Despite the fact that this subject just isn’t noticeable for small photos, it’s higher to make use of one thing to keep away from this subject.

In such a case, you possibly can make the most of ui.ImageByteFormat.rawRgba after which prepend the BMP file header. Right here, the file header will serve to move geometry to the reminiscence picture decoder.

Resolution 2

In case you search for an answer that doesn’t want the pointless compress or copy, the next coding will assist you.

import 'dart:ui' as ui;
class RawImageProvider implements ImageProvider {
ultimate ui.Picture picture;
ImageStreamCompleter load(key, decode) => throw UnimplementedError();
Future obtainKey(ImageConfiguration cfg) => throw UnimplementedError();
Future evict({
ImageCache cache,
ImageConfiguration configuration = ImageConfiguration.empty,
}) {
return SynchronousFuture(true);
ImageStream resolve(ImageConfiguration configuration) {
return ImageStream()..setCompleter(RawImageStreamCompleter(picture));
void dispose() => picture?.dispose();
class RawImageStreamCompleter extends ImageStreamCompleter {
RawImageStreamCompleter(ui.Picture picture) {
setImage(ImageInfo(picture: picture));
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This resolution works as an ImageProvider requires to return a ui.Picture. Skip all of the caching and async loading logic of the ImageProvider if you have already got it.

Right here, implements are used as a substitute of extensions to throw away the bottom implementation. After that, it returns the customized ImageStreamCompleter and forwards the ui.picture to the widget.

Issues to find out about Flutter photos

Are you creating an app in Flutter? Do you wish to show photos? Nicely! It’s best to have in-depth information about Flutter photos. Then, it is best to embody code and assets (belongings) to develop an app.

Right here, the asset signifies the file bundled and deployed with the app. It’s typically accessible at runtime. The belongings can embody photos, icons, configuration information and static information.

Flutter typically helps a number of picture codecs, together with GIF, JPEG, WebP, BMP, WBMP, and PNG. One of many fundamental ideas in all cellular apps is displaying photos. Flutter additionally has the picture widget.

It enables you to show numerous sorts of photos within the cellular software. As well as, it lets you convert the uncooked picture into totally different codecs as per your wants. However, for that, it is best to use the correct assets and coding.

The best way to show the picture within the Flutter

Within the earlier part, you may have understood the conversion of the RawImage to Extends ImageProvider. Now, you’ll know in regards to the steps to show the picture of your selection in a Flutter. Comply with the below-mentioned steps rigorously to show the picture.

  • Create a brand new folder inside the basis of your Flutter venture. Then, it is best to title it belongings. You may give another names if you want as a result of it’s totally your selection.

  • You could add photos one after the other manually contained in the folder you may have created earlier than. Make sure you add the photographs appropriately to keep away from last-minute hassles.

  • Now, it’s time to replace the pubspec.yaml file. If the picture title is idler.jpeg, then pubspec.yaml file seems to be like this:

- belongings/pill.jpeg
- belongings/background.jpeg
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If the belongings folder comprises greater than a single picture, it is best to embody it by mentioning the listing title together with slash (/) on the finish. Right here is the instance:


  • belongings/
    Asstes Location
    Eventually, it is best to open the principle.dart file after which insert the next code appropriately.
import 'package deal:flutter/materials.dart';
void fundamental() => runApp(MyApp());
class MyApp extends StatelessWidget {
Widget construct(BuildContext context) {
return MaterialApp(
residence: Scaffold(
appBar: AppBar(
title: Textual content('Flutter Picture Demo'),
physique: Heart(
little one: Column(
youngsters: [
'A tablet is a wireless touch screen computer that is smaller than a notebook but larger than a smartphone.',
style: TextStyle(fontSize: 20.0),
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  • Now you can run the app and see the Flutter picture demo.

RawImage Output
If the whole lot is okay, then you possibly can proceed together with your venture additional.


Now, you may have a transparent understanding of changing a RawImage to Extends ImageProvider. You should utilize any of the above options to make the method simpler. As stated earlier, you possibly can ask for assist from the skilled and expert workforce on the Flutter improvement firm if wanted. The specialists will take heed to your question and information you to journey on the correct path to finish your venture.

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