How to get build and version number of Flutter app

Question

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

After package_info installation, 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();
                }
              },
            ),

RE the multiple references to package_info, please note that this package has been deprecated and the recommended replacement is the Flutter Community Plus Plugins version, package_info_plus.

You can use the get_version to query information about the application Version Name, Version Code, Platform and OS Version, and App ID on iOS and Android

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

dependencies:
  get_version: ^0.2.2

Now in your Dart code, you can use:

import 'package:get_version/get_version.dart';

Go to build.gradle and update:

defaultConfig {
  versionCode 1
  versionName "1.0"
  minSdkVersion 16
  testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}

How to Use

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _projectVersion = '';
  String _projectCode = '';
  String _projectAppID = '';
  String _projectName = '';

  @override
  initState() {
    super.initState();
    initPlatformState();
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      platformVersion = await GetVersion.platformVersion;
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    String projectVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      projectVersion = await GetVersion.projectVersion;
    } on PlatformException {
      projectVersion = 'Failed to get project version.';
    }

    String projectCode;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      projectCode = await GetVersion.projectCode;
    } on PlatformException {
      projectCode = 'Failed to get build number.';
    }

    String projectAppID;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      projectAppID = await GetVersion.appID;
    } on PlatformException {
      projectAppID = 'Failed to get app ID.';
    }

    String projectName;
    // Platform messages may fail, so we use a try/catch PlatformException.
    try {
      projectName = await GetVersion.appName;
    } on PlatformException {
      projectName = 'Failed to get app name.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
      _projectVersion = projectVersion;
      _projectCode = projectCode;
      _projectAppID = projectAppID;
      _projectName = projectName;
    });
  }
  
}