Flutter Desktop Apps to Automatically Update Themselves


This plugin allows Flutter desktop apps to automatically update themselves (based on sparkle and winsparkle).

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Platform Support


Quick Start


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

  auto_updater: ^0.1.6


      url: https://github.com/leanflutter/auto_updater.git
      ref: main

⚠️ Windows requirements

  • openssl

Run the following command:

Use Chocolatey

choco install openssl


import 'package:auto_updater/auto_updater.dart';

void main() async {
  // Must add this line.

  String feedURL = 'http://localhost:5000/appcast.xml';
  await autoUpdater.setFeedURL(feedURL);
  await autoUpdater.checkForUpdates();
  await autoUpdater.setScheduledCheckInterval(3600);


Please see the example app of this plugin for a full example.

Publish your app

Generate private key

Run the following command:

flutter pub run auto_updater:generate_keys

You need to run this command on macOS and Windows systems separately.


Prepare signing with EdDSA signatures:


A key has been generated and saved in your keychain. Add the `SUPublicEDKey` key to
the Info.plist of each app for which you intend to use Sparkle for distributing
updates. It should appear like this:


Change the file macos/Runner/Info.plist as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">


+	<key>SUPublicEDKey</key>
+	<string>bHaXClrRGMmKoKP/3HJnr/jn2ODTRPAM3VZhhkI9ZvY=</string>


Prepare signing with DSA signatures:


Generated two files:
dsa_priv.pem: your private key. Keep it secret and don't share it!
dsa_pub.pem: public counterpart to include in youe app.
If you lose it, your users will be unable to upgrade!

command will generate the private key (dsa_priv.pem) and the public key (dsa_pub.pem) for you. Please Back up your private key and keep it safe, Add your public key to your project either as Windows resource.

Change the file windows/runner/Runner.rc as follows:


+// WinSparkle

+// And verify signature using DSA public key:
+DSAPub      DSAPEM      "../../dsa_pub.pem"


To simplify the packaging process, Flutter Distributor is used here, A complete tool dedicated to packaging and publishing Flutter apps.

Add distribute_options.yaml to your project root directory.

output: dist/
  - name: dev
      - name: release-macos
          platform: macos
          target: zip
              APP_ENV: dev
      # See full documentation: https://distributor.leanflutter.org/configuration/makers/exe
      - name: release-windows
          platform: windows
          target: exe
              APP_ENV: dev


Run the following command:

flutter_distributor release --name dev --jobs release-macos


Run the following command:

flutter_distributor release --name dev --jobs release-windows

Get signature


Run the following command:

flutter pub run auto_updater:sign_update dist/1.1.0+2/auto_updater_example-1.1.0+2-macos.zip


sparkle:edSignature="pbdyPt92pnPkzLfQ7BhS9hbjcV9/ndkzSIlWjFQIUMcaCNbAFO2fzl0tISMNJApG2POTkZY0/kJQ2yZYOSVgAA==" length="13400992"

Update the obtained new signature to the value of the sparkle:edSignature attribute of the enclosure node of the appcast.xml file.


Run the following command:

flutter pub run auto_updater:sign_update dist/1.1.0+2/auto_updater_example-1.1.0+2-windows-setup.exe



Update the obtained new signature to the value of the sparkle:dsaSignature attribute of the enclosure node of the appcast.xml file.


Add appcast.xml to your project dist/ directory.

<?xml version="1.0" encoding="UTF-8"?>
<rss version="2.0" xmlns:sparkle="http://www.andymatuschak.org/xml-namespaces/sparkle">
        <description>Most recent updates to auto_updater_example</description>
            <title>Version 1.1.0</title>
            <pubDate>Sun, 16 Feb 2022 12:00:00 +0800</pubDate>
            <enclosure url="1.1.0+2/auto_updater_example-1.1.0+2-macos.zip"
                       type="application/octet-stream" />
            <title>Version 1.1.0</title>
            <pubDate>Sun, 16 Feb 2022 12:00:00 +0800</pubDate>
            <enclosure url="1.1.0+2/auto_updater_example-1.1.0+2-windows.exe"
                       type="application/octet-stream" />

This example uses the same appcast.xml file for macOS and Windows, and you need to configure the value of the sparkle:os property accordingly.

Start the test update server:

cd dist/
serve -l 5002

Who's using it?

  • Biyi - A convenient translation and dictionary app.





Sets the url and initialize the auto updater.


Asks the server whether there is an update. You must call setFeedURL before using this API.


Sets the auto update check interval, default 86400, minimum 3600, 0 to disable update

Related Links

Use this package as a library

Depend on it

Run this command:

With Flutter:

 $ flutter pub add auto_updater

This will add a line like this to your package's pubspec.yaml (and run an implicit flutter pub get):

  auto_updater: ^0.1.6

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

Import it

Now in your Dart code, you can use:

import 'package:auto_updater/auto_updater.dart'; 


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

import './pages/home.dart';

void main() {

  runApp(const MyApp());

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

  _MyAppState createState() => _MyAppState();

class _MyAppState extends State<MyApp> {
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        primaryColor: const Color(0xff416ff4),
        canvasColor: Colors.white,
        scaffoldBackgroundColor: const Color(0xffF7F9FB),
        dividerColor: Colors.grey.withOpacity(0.3),
      builder: BotToastInit(),
      navigatorObservers: [BotToastNavigatorObserver()],
      home: const HomePage(),

Download Details:

Author: leanflutter

Source Code: https://github.com/leanflutter/auto_updater

#flutter #android #ios 

What is GEEK

Buddha Community

Flutter Desktop Apps to Automatically Update Themselves

Google's Flutter 1.20 stable announced with new features - Navoki

Flutter Google cross-platform UI framework has released a new version 1.20 stable.

Flutter is Google’s UI framework to make apps for Android, iOS, Web, Windows, Mac, Linux, and Fuchsia OS. Since the last 2 years, the flutter Framework has already achieved popularity among mobile developers to develop Android and iOS apps. In the last few releases, Flutter also added the support of making web applications and desktop applications.

Last month they introduced the support of the Linux desktop app that can be distributed through Canonical Snap Store(Snapcraft), this enables the developers to publish there Linux desktop app for their users and publish on Snap Store.  If you want to learn how to Publish Flutter Desktop app in Snap Store that here is the tutorial.

Flutter 1.20 Framework is built on Google’s made Dart programming language that is a cross-platform language providing native performance, new UI widgets, and other more features for the developer usage.

Here are the few key points of this release:

Performance improvements for Flutter and Dart

In this release, they have got multiple performance improvements in the Dart language itself. A new improvement is to reduce the app size in the release versions of the app. Another performance improvement is to reduce junk in the display of app animation by using the warm-up phase.


If your app is junk information during the first run then the Skia Shading Language shader provides for pre-compilation as part of your app’s build. This can speed it up by more than 2x.

Added a better support of mouse cursors for web and desktop flutter app,. Now many widgets will show cursor on top of them or you can specify the type of supported cursor you want.

Autofill for mobile text fields

Autofill was already supported in native applications now its been added to the Flutter SDK. Now prefilled information stored by your OS can be used for autofill in the application. This feature will be available soon on the flutter web.


A new widget for interaction

InteractiveViewer is a new widget design for common interactions in your app like pan, zoom drag and drop for resizing the widget. Informations on this you can check more on this API documentation where you can try this widget on the DartPad. In this release, drag-drop has more features added like you can know precisely where the drop happened and get the position.

Updated Material Slider, RangeSlider, TimePicker, and DatePicker

In this new release, there are many pre-existing widgets that were updated to match the latest material guidelines, these updates include better interaction with Slider and RangeSliderDatePicker with support for date range and time picker with the new style.


New pubspec.yaml format

Other than these widget updates there is some update within the project also like in pubspec.yaml file format. If you are a flutter plugin publisher then your old pubspec.yaml  is no longer supported to publish a plugin as the older format does not specify for which platform plugin you are making. All existing plugin will continue to work with flutter apps but you should make a plugin update as soon as possible.

Preview of embedded Dart DevTools in Visual Studio Code

Visual Studio code flutter extension got an update in this release. You get a preview of new features where you can analyze that Dev tools in your coding workspace. Enable this feature in your vs code by _dart.previewEmbeddedDevTools_setting. Dart DevTools menu you can choose your favorite page embed on your code workspace.

Network tracking

The updated the Dev tools comes with the network page that enables network profiling. You can track the timings and other information like status and content type of your** network calls** within your app. You can also monitor gRPC traffic.

Generate type-safe platform channels for platform interop

Pigeon is a command-line tool that will generate types of safe platform channels without adding additional dependencies. With this instead of manually matching method strings on platform channel and serializing arguments, you can invoke native class and pass nonprimitive data objects by directly calling the Dartmethod.

There is still a long list of updates in the new version of Flutter 1.2 that we cannot cover in this blog. You can get more details you can visit the official site to know more. Also, you can subscribe to the Navoki newsletter to get updates on these features and upcoming new updates and lessons. In upcoming new versions, we might see more new features and improvements.

You can get more free Flutter tutorials you can follow these courses:

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The Ultimate Guide To Tik Tok Clone App With Firebase - Ep 2

The Ultimate Guide To Tik Tok Clone App With Firebase - Ep 2
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