Flutter – How to Get App Name, Package Name, Version & Build number

In this article, we will learn about how to get package name, app name, version and build number and many more things in our Flutter app. The main usecase of using this is when we want to give a new update to users and have to notify them from our app.

Step By Step Implementation

Step 1: Create a New Project in Android Studio

To set up Flutter Development on Android Studio please refer to Android Studio Setup for Flutter Development, and then create a new project in Android Studio please refer to Creating a Simple Application in Flutter.

Step 2: Add a package in the pubspec.yaml file

Dart

dependencies:
  package_info_plus: ^5.0.1

Step 3: Import the Package

Import the package in the file to access different package

Dart

import 'package:package_info_plus/package_info_plus.dart';

Step 4: Get Details

Dart

@override
 void initState() {
   super.initState();
   PackageInfo.fromPlatform().then((value) {
     print(value); // Value will be our all details we get from package info package
   });
 }

Step 5: Use it in your app as per your requirement

We will simply display it in text

Complete Code:

Dart

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

class PackageInfoScreen extends StatefulWidget {
  const PackageInfoScreen({super.key});

  @override
  State<PackageInfoScreen> createState() => _PackageInfoScreenState();
}

class _PackageInfoScreenState extends State<PackageInfoScreen> {
  Map<String, dynamic> myPackageData = {};
  @override
  void initState() {
    super.initState();
    PackageInfo.fromPlatform().then((value) {
      myPackageData = value.data;
      setState(() {});
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("Package Infos Details"),
      ),
      body: Padding(
        padding: const EdgeInsets.all(8.0),
        child: Center(
          child: Text(
            myPackageData.toString(),
            style: const TextStyle(fontSize: 20),
          ),
        ),
      ),
    );
  }
}

Sample data for pubspec.yaml file

Output:

Let’s discuss about each variable we recieves through this package

Variable Name	Description	Example Value
appName	This is used to show app’s name which you give while creating your app	learning_projects_flutter
buildNumber	It is build number written in pubspec.yaml file after an version number. For Example 1.0.0+2 your build number will be 3 and your version number will be 1.0.0	1
packageName	Package name of that app with its organization,project_name	com.flutterwings.learning_projects_flutter
version	version written in pubspec.yaml file It is build number written in pubspec.yaml file after an version number. For Example 1.0.0+2 your build number will be 3 and your version number will be 1.0.0	1.0.0
buildSignature	The build signature. Empty string on iOS, signing key signature (hex) on Android	1212CD2F9CE4211BAEFCF95EF5294E518177C341
installerStore	This will give you store from where you have installed this application	playstore,appstore,