Building Your First Flutter App Step-by-Step

 Building Your First Flutter App Step-by-Step

Flutter is a popular open-source UI toolkit by Google for building natively compiled apps for mobile, web, and desktop from a single codebase. Here’s a simple step-by-step guide to help you build your first Flutter app.


Step 1: Set Up Your Development Environment

Install Flutter SDK: Download Flutter from flutter.dev and follow the installation instructions for your OS (Windows, macOS, Linux).


Install an IDE: Use Visual Studio Code or Android Studio with Flutter and Dart plugins installed.


Set up a device or emulator: You can use a physical device connected via USB or launch an Android/iOS emulator.


Step 2: Create a New Flutter Project

Open your terminal or IDE and run:


bash

Copy

Edit

flutter create my_first_app

Navigate to the project folder:


bash

Copy

Edit

cd my_first_app

Open this project in your IDE.


Step 3: Understand the Default Flutter App

Flutter creates a simple counter app by default. It uses main.dart file located in lib/.


Open lib/main.dart — this file contains the main app code.


Step 4: Run Your App

Run the app using:


bash

Copy

Edit

flutter run

or press the Run button in your IDE. Your app should launch in the emulator or connected device, showing a button that increments a counter.


Step 5: Modify the App

Let’s make a simple change — change the title and button text.


Open lib/main.dart, and find the MyHomePage widget. Change:


dart

Copy

Edit

title: 'Flutter Demo Home Page',

to


dart

Copy

Edit

title: 'My First Flutter App',

And change the button’s tooltip and text:


dart

Copy

Edit

tooltip: 'Increment',

to


dart

Copy

Edit

tooltip: 'Tap to increase',

and


dart

Copy

Edit

child: Text('You have pushed the button this many times:'),

to


dart

Copy

Edit

child: Text('Number of taps:'),

Save and hot reload your app (r in terminal or the IDE hot reload button) to see changes instantly.


Step 6: Add a New Widget

Try adding a simple text widget below the counter:


dart

Copy

Edit

Column(

  mainAxisAlignment: MainAxisAlignment.center,

  children: <Widget>[

    Text(

      'Number of taps:',

    ),

    Text(

      '$_counter',

      style: Theme.of(context).textTheme.headline4,

    ),

    Text(

      'Welcome to Flutter!',

      style: TextStyle(fontSize: 20, color: Colors.blue),

    ),

  ],

),

Step 7: Build & Test

Keep experimenting by adding widgets, changing styles, and using Flutter’s hot reload to see changes immediately. Use documentation and Flutter widget catalog to explore more UI components.


Summary

Set up Flutter environment.


Create a new project.


Run the default app.


Modify text and UI elements.


Add new widgets.


Use hot reload to see instant changes.


Flutter’s combination of fast development and beautiful UI makes it easy and fun to build apps quickly.

Learn Flutter Training in Hyderabad

Read More

Understanding Flutter Widgets: The Basics

Setting Up Flutter on Windows/Mac/Linux

What is Flutter? An Introduction for Beginners

Visit Our IHUB Talent Training Institute in Hyderabad

Get Directions

Comments

Post a Comment

Popular posts from this blog

How to Install and Set Up Selenium in Python (Step-by-Step)

 Here’s your step-by-step guide to installing and setting up Selenium in Python — perfect if you're just getting started with browser automation. 🚀 🐍 Step 1: Install Python If you haven’t already: Download Python: https://www.python.org/downloads/ Make sure to check the box "Add Python to PATH" during installation Verify installation: bash Copy Edit python --version pip --version 📦 Step 2: Install Selenium Library Open your terminal or command prompt and run: bash Copy Edit pip install selenium To verify: bash Copy Edit pip show selenium 🌐 Step 3: Download WebDriver for Your Browser Depending on what browser you want to automate: 🔹 Chrome: Download ChromeDriver: ➡️ https://sites.google.com/chromium.org/driver/ Make sure the driver version matches your installed Chrome version. 🔹 Firefox: Download GeckoDriver: ➡️ https://github.com/mozilla/geckodriver/releases Unzip and place the executable somewhere on your system, like: Windows: C:\WebDrivers\ Mac/Linux: /usr/local...
Read more

Feeling Stuck in Manual Testing? Here’s Why You Should Learn Automation Testing

Feeling Stuck in Manual Testing? Here’s Why You Should Learn Automation Testing Are you feeling like your manual testing career is hitting a ceiling? You’re not alone. Many QA professionals start their careers in manual testing but soon realize the need to level up. If you’re wondering what’s next, automation testing might just be the breakthrough you need. Why Manual Testing Isn’t Enough Anymore Manual testing is essential, especially in exploratory, usability, and ad-hoc testing scenarios. But as applications grow more complex and development cycles become shorter, manual testing can’t keep up. Companies are looking for faster, more efficient testing methods—and that’s where automation comes in. Here are a few signs that you're stuck in manual testing: Repeating the same test cases for every build Working on tight deadlines with limited test coverage Seeing peers move ahead with automation skills Lack of growth in responsibilities or pay scale If any of this sounds familiar, it...
Read more

A Beginner's Guide to ETL Testing: What You Need to Know

A Beginner's Guide to ETL Testing: What You Need to Know Introduction: Understanding the Importance of ETL Testing Have you ever wondered how data gets from one place to another in a way that is both reliable and accurate? What happens when that data is transferred and transformed between systems? The answer lies in the ETL (Extract, Transform, Load) process, a crucial part of data management in many industries. But, how do we ensure that data is being handled correctly in this intricate process? Enter ETL testing. ETL testing is vital for ensuring that your data pipeline is working as expected. But as a beginner, where do you start? What should you focus on? This guide will answer these questions and more, helping you build a solid foundation for mastering ETL testing. Whether you're a data engineer, quality assurance professional, or anyone working with data, this article will provide insights into how ETL testing works, why it's important, and the best practices you need...
Read more