Develop a Fully Functional Calculator App in Flutter — Beginner to Pro Guide

Flutter is a popular open-source framework created by Google for building natively compiled applications for mobile, web, and desktop from a single codebase. This article will walk you through setting up a new Flutter project, getting familiar with the basics, and building a calculator app from scratch to an advanced level.

Prerequisites

• Install Flutter: Download and install Flutter from flutter.dev.
• Set up an IDE: Use VS Code or Android Studio with Flutter extensions.
• Flutter Doctor: Run flutter doctor in the terminal to check for any setup issues.

1. Setting Up a New Flutter Project

Step 1: Create a New Flutter Project

Open your terminal and run:

flutter create calculator_app

This command creates a new Flutter project with all the necessary folders and files.

Step 2: Navigate to the Project Directory

cd calculator_app

Step 3: Open the Project in Your Preferred IDE