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https://github.com/jarrarshahid/calculator-app
A simple calculator app built with Flutter, featuring basic math operations, sign toggle, percentage calculations, and a sleek UI. Ideal for beginners learning Flutter widgets, layouts, and state management.
https://github.com/jarrarshahid/calculator-app
app-development calculator dart flutter flutter-calculator-app flutter-widgets math-expressions math-operations mobile-app open-source state-management ui-design
Last synced: 29 days ago
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A simple calculator app built with Flutter, featuring basic math operations, sign toggle, percentage calculations, and a sleek UI. Ideal for beginners learning Flutter widgets, layouts, and state management.
- Host: GitHub
- URL: https://github.com/jarrarshahid/calculator-app
- Owner: JarrarShahid
- Created: 2024-11-11T17:39:14.000Z (about 1 month ago)
- Default Branch: main
- Last Pushed: 2024-11-11T18:05:39.000Z (about 1 month ago)
- Last Synced: 2024-11-23T20:16:02.409Z (29 days ago)
- Topics: app-development, calculator, dart, flutter, flutter-calculator-app, flutter-widgets, math-expressions, math-operations, mobile-app, open-source, state-management, ui-design
- Language: Dart
- Homepage:
- Size: 537 KB
- Stars: 1
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Flutter Calculator App
A simple calculator application built with Flutter. The app includes basic mathematical operations and a user-friendly interface with an attractive design. This project serves as a beginner-friendly example for learning Flutter layouts, button widgets, and handling user input.
## Features
Basic Operations: Perform addition, subtraction, multiplication, and division.
Clear Input: Reset the calculator using the AC button.
Toggle Sign: Change the sign of numbers using the +/- button.
Percentage Calculation: Easily calculate percentages.
Delete: Remove the last character of the input using the DEL button.
Decimal Support: Perform calculations with decimal values.
Real-time Evaluation: See the result instantly when pressing the = button.
Responsive Design: Adapts to different screen sizes.
## Screenshots
### Initial
### addition
### Subtraction
### Multiplication
### Division
### Percentage
### Decimal
## Getting Started
### Prerequisites
Flutter SDK
IDE like Android Studio or VS Code
Installation
1. Clone the Repository
git clone https://github.com/JarrarShahid/calculator-app.git
cd flutter_calculator_app
2. Install Dependencies
Navigate to the project directory and install the necessary packages:
flutter pub get
3. Run the App
flutter run
Ensure your device (emulator or physical device) is connected and recognized by Flutter.
## Project Structure
main.dart: Entry point of the application.
home_screen.dart: Contains the UI and main functionality of the calculator.
my_button.dart: A reusable widget for the calculator buttons.
constant.dart: Contains constants for styling and color values.
## Code Overview
main.dart
This file initializes the app and sets up the home screen.
void main() {
runApp(const MyApp());
}
home_screen.dart
The main screen of the app. It contains the calculator layout and logic to handle button presses.
my_button.dart
Defines the MyButton widget, which is used to create calculator buttons with customizable labels, colors, and actions.
constant.dart
Defines common styling constants like colors and text styles.
## How to Use
1. Basic Operations: Tap the numeric buttons to input values and the operator buttons (+, -, x, /) to perform calculations.
2. Toggle Sign: Tap +/- to change the sign of the current input.
3. Percentage: Tap % to apply percentage calculations.
4. Clear All: Tap AC to reset the calculator.
5. Delete Last Character: Tap DEL to remove the last character in the input field.
6. Equals: Tap = to evaluate the entered expression.
## Dependencies
math_expressions: For parsing and evaluating mathematical expressions.
## Contributing
Contributions are welcome! If you have suggestions or improvements, feel free to create a pull request or open an issue.
License
This project is licensed under the MIT License.