How to Convert Asset Image to File In Flutter?

• General

You can access the byte data via rootBundle. Then, you can save it to the device’s temporary directory which is obtained by path_provider. So, in this article, we will go through how to convert Asset Image to File In Flutter.

Want to harness the full potential of asset images in your Flutter projects? In this comprehensive blog, we unveil the step-by-step process to effortlessly convert asset images to File objects. Learn the techniques to utilize asset images as files, enabling you to leverage advanced image processing libraries, perform transformations, and seamlessly integrate them into various parts of your app. With our expert guidance, you’ll gain a deep understanding of the Flutter framework’s capabilities and explore efficient strategies to convert asset images into files. Enhance your app’s visuals, enable dynamic image manipulation, and take your Flutter development skills to new heights. Join us on this journey as we unlock the power of asset images and empower you with invaluable techniques to handle and convert them with ease.

How to Convert Asset Image to File In Flutter ??

import 'dart:async';
import 'dart:io';

import 'package:flutter/services.dart' show rootBundle;
import 'package:path_provider/path_provider.dart';

Future<File> getImageFileFromAssets(String path) async {
  final byteData = await rootBundle.load('assets/$path');

  final file = File('${(await getTemporaryDirectory()).path}/$path');
  await file.writeAsBytes(byteData.buffer.asUint8List(byteData.offsetInBytes, byteData.lengthInBytes));

  return file;
}

In your example, you would call this function like this:

File f = await getImageFileFromAssets('images/myImage.jpg');

For more information on writing the byte data,  check out this answer

You will need to await the Future and in order to do that, make the function async:

ElevatedButton(
   onPressed: () async => showDialog(
     context: context,
     builder: (_) => Container(child: Image.file(await getImageFileFromAssets('images/myImage.jpg')))),
   child: Text('Show Image'));

Make use of the flutter_absolute_path package in pubsec.yaml

To convert file path from this format :

“content://media/external/images/media/5275”

To

"/storage/emulated/0/DCIM/Camera/IMG_00124.jpg”

List <File> fileImageArray = [];
assetArray.forEach((imageAsset) async {
final filePath = await FlutterAbsolutePath.getAbsolutePath(imageAsset.identifier);

File tempFile = File(filePath);
if (tempFile.existsSync()) {
    fileImageArray.add(tempFile);
}

Get a file from the asset without providing a path. So import package like a below:

Future<File> getImageFileFromAssets(Asset asset) async {
    final byteData = await asset.getByteData();

    final tempFile =
        File("${(await getTemporaryDirectory()).path}/${asset.name}");
    final file = await tempFile.writeAsBytes(
      byteData.buffer
          .asUint8List(byteData.offsetInBytes, byteData.lengthInBytes),
    );

    return file;
  }

Conclusion:

Thank you for being with us on this Flutter Journey!!! we hope you got what you were looking for!!

So in this article, we have been through how to convert asset images to file in flutter. Stay Connected for more amazing articles regarding Flutter Development and Dart!!

Keep Learning !!! Keep Fluttering !!!

Share the article with your friends and colleagues and help them grow their knowledge as well.

Let us know in the comments below if you have doubts regarding Flutter Development, We’d love to help you.

FlutterAgency.com is our portal Platform dedicated to Flutter Technology and Flutter Developers. The portal is full of cool resources from Flutter like Flutter Widget Guide, Flutter Projects, Code libs and etc.

FlutterAgency.com is one of the most popular online portals dedicated to Flutter Technology and daily thousands of unique visitors come to this portal to enhance their knowledge of Flutter.

Written by Abhishek Dhanani

Abhishek Dhanani, a skilled software developer with 3+ years of experience, masters Dart, JavaScript, TypeScript, and frameworks like Flutter and NodeJS. Proficient in MySQL, Firebase, and cloud platforms AWS and GCP, he delivers innovative digital solutions.