Flutter Tutorial for Beginners: Build Your First App Step-by-Step

In today’s fast-paced digital world, mobile app development is one of the most sought-after skills. Whether you're an aspiring developer or a tech enthusiast, learning Flutter can be your gateway into the world of cross-platform mobile app development. This Flutter tutorial for beginners will guide you step-by-step in building your very first mobile app with ease and confidence.

Flutter, developed by Google, is a powerful open-source UI toolkit that allows developers to create high-performance, visually appealing applications for Android, iOS, web, and desktop — all from a single codebase.

Let’s dive in and explore how you can start your journey with Flutter and build your first app from scratch.

 What is Flutter?

Flutter is an open-source framework created by Google for building beautiful, natively compiled applications. It uses Dart as its programming language and provides a rich set of pre-built widgets and tools to help developers create responsive UIs with minimal effort.

Unlike other cross-platform solutions, Flutter renders everything using its own high-performance rendering engine. This means more control, better performance, and consistent UI across platforms.

Why Learn Flutter?

Here are a few reasons why Flutter is gaining popularity among developers:

  • Single Codebase: Write once, deploy on both Android and iOS.

  • Fast Development: With features like hot reload, you can see changes instantly.

  • Expressive UI: Flutter’s widget-based architecture makes it easy to build custom, dynamic UIs.

  • Strong Community: Backed by Google, with excellent documentation and community support.

  • Career Growth: Companies are actively hiring Flutter developers for mobile projects.

 Getting Started: Setting Up Flutter

Before you build your first app, you need to set up your development environment. Here’s how:

1. Install Flutter SDK

Visit the official Flutter website (flutter.dev) and download the SDK based on your operating system (Windows, macOS, or Linux).

2. Install an IDE

Flutter supports popular IDEs like:

  • Android Studio

  • Visual Studio Code

  • IntelliJ IDEA

Install any of them and add the Flutter and Dart plugins.

3. Set Up an Emulator or Device

To test your app, use either:

  • An Android Emulator

  • An iOS Simulator (macOS only)

  • A physical Android/iOS device

4. Run flutter doctor

Open a terminal and run:

flutter doctor

This command checks your environment setup and shows any missing dependencies.

 Your First Flutter App: “Hello Flutter”

Let’s build a basic app that displays “Hello, Flutter!” on the screen.

Step 1: Create a New Flutter Project

In your terminal or IDE, run:

flutter create hello_flutter

Navigate into the new project folder:

cd hello_flutter

Open the project in your IDE.

Step 2: Update main.dart

Inside the lib folder, open main.dart and replace the code with:

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends Stateless Widget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Hello Flutter App'),
        ),
        body: Center(
          child: Text(
            'Hello, Flutter!',
            style: TextStyle(fontSize: 24),
          ),
        ),
      ),
    );
  }
}

Step 3: Run the App

Now run the app on your emulator or connected device using:

flutter run

You should see a simple screen with an app bar and the text "Hello, Flutter!" centered on the screen.

 Understanding the Code

Let’s break down what you just wrote:

  • main() is the entry point of your Flutter app.

  • runApp(MyApp()) launches the app and displays the widget tree.

  • MaterialApp is a wrapper that gives your app a Material Design feel.

  • Scaffold provides structure to your app with AppBar, Body, Drawer, etc.

  • Text is a widget that displays static or dynamic text.

Widgets are the building blocks of Flutter apps — everything you see on the screen is a widget!

 Next Steps After Your First App

Now that you've built your first Flutter app, here are some ideas to continue learning:

  • Try building a to-do list app with user input

  • Learn about Stateful widgets and state management

  • Explore navigation and routing between multiple screens

  • Add images, buttons, and interactivity to your UI

  • Connect to a backend using Firebase or REST APIs

Recommended Learning Resources

 Final Thoughts

Flutter is an excellent choice for beginners because of its ease of use, modern features, and cross-platform capabilities. With this Flutter tutorial for beginners, you’ve taken the first step toward becoming a mobile app developer.

As you continue learning, try building real-world apps, contribute to open-source projects, and stay updated with the latest from the Flutter community. The journey ahead is exciting,


and it starts with writing your first line of code.


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