How to get build and version number of Flutter app

install package_info_plus, then you can use it directly with future builder in your widget tree:

 FutureBuilder<PackageInfo>(
              future: PackageInfo.fromPlatform(),
              builder: (context, snapshot) {
                switch (snapshot.connectionState) {
                  case ConnectionState.done:
                    return Align(
                      alignment: Alignment.bottomCenter,
                      child: Text(
                        'Version: ${snapshot.data!.version}',),
                      );
                  default:
                    return const SizedBox();
                }
              },
            ),

You can use package_info_plus.

The versions are extracted from:

Android:

build.gradle, versionCode and versionName

iOS:

Info.plist, CFBundleVersion

Usage

Add the dependency

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

dependencies:
  package_info_plus: ^1.0.6

2. Import the file into your dart file:

import 'package:package_info_plus/package_info_plus.dart';

3. if your method is marked as async:

PackageInfo packageInfo = await PackageInfo.fromPlatform();

String appName = packageInfo.appName;
String packageName = packageInfo.packageName;
String version = packageInfo.version;
String buildNumber = packageInfo.buildNumber;

If you don't want to use await/async:

PackageInfo.fromPlatform().then((PackageInfo packageInfo) {
  String appName = packageInfo.appName;
  String packageName = packageInfo.packageName;
  String version = packageInfo.version;
  String buildNumber = packageInfo.buildNumber;
});

Note: This answer has been updated to reflect the fact that the package_info plugin is deprecated and redirects to package_info_plus.

Version name and build number

At development time, you can easily find the version name and build number of a Flutter or Dart project by inspecting pubspec.yaml. Here is an example:

version: 1.1.0+2

This is case the version name is 1.1.0 and the build number is 2.

However, if you want to get these values at runtime, you should use a plugin.

Add the dependency

In pubspec.yaml add the package_info_plus package.

dependencies:
  package_info_plus: ^1.0.2

Update the version number to the current one.

Import the package

In the file that you need it, add the following import.

import 'package:package_info_plus/package_info_plus.dart';

Get the version name and code

In your code you can get the app version name and code like this:

PackageInfo packageInfo = await PackageInfo.fromPlatform();
String version = packageInfo.version;
String code = packageInfo.buildNumber;

See also

• How to set build and version number of Flutter app
• How to get build and version number of Flutter Web app