Simple Calculator App in Android Using Kotlin

In this calculator app, a central function named handleOperation is used to perform the arithmetic logic when any of the operation buttons (+, -, *, /) are clicked. Instead of writing separate setOnClickListener blocks for each button, each button's click event is routed to this single function by passing a specific operator symbol as an argument. This makes the code cleaner, more maintainable, and avoids repetition. The handleOperation function retrieves numeric input from the EditText fields, converts them into double values, and performs the corresponding calculation based on the operator received. The result is then displayed in a TextView, providing instant feedback to the user. This modular approach enhances both the readability and scalability of the Kotlin-based calculator app.

Видео Simple Calculator App in Android Using Kotlin канала Swarup Kumar Saha