Make a Calculator in Android Studio using Kotlin
Creating a calculator in Android Studio using Kotlin is a fundamental task that helps you understand the basics of Android app development and Kotlin programming. It’s important for learning and can be extended for more complex applications.
- Enter two numbers in the input fields.
- Select an operator from the dropdown.
- Click the ‘Calculate’ button.
The calculator uses basic arithmetic operations. The result is calculated based on the selected operator and the numbers entered.
- Adding two numbers: Enter 5 in the first input, 3 in the second, select ‘Add’, and click ‘Calculate’. The result is 8.
- Subtracting two numbers: Enter 10 in the first input, 4 in the second, select ‘Subtract’, and click ‘Calculate’. The result is 6.
- Multiplying two numbers: Enter 6 in the first input, 7 in the second, select ‘Multiply’, and click ‘Calculate’. The result is 42.
| Operator | Result |
|---|---|
| Addition (+) | Sum of two numbers |
| Subtraction (-) | Difference of two numbers |
| Multiplication (*) | Product of two numbers |
| Division (/) | Quotient of two numbers |
- Always validate user input to prevent errors.
- Use Kotlin extensions to simplify your code.
- Consider adding more features like memory, history, etc.
What is Kotlin?
Kotlin is a modern statically-typed programming language that runs on the JVM and is now the officially recommended language for Android app development.
Why use Android Studio?
Android Studio is the official integrated development environment (IDE) for Android app development, providing a robust and intelligent code editor, a flexible and powerful layout editor, and more.
Android Studio – Official website
Kotlin – Official website