Kotlin: Change Editable to Int

Kotlin is a modern programming language designed to be concise, safe, and interoperable with existing Java code. In this tutorial, we will explore how to convert an Editable object to an Int in Kotlin.

Prerequisites

Before we get started, make sure you have the following:

• Android Studio (version 4.0 or higher)
• Basic knowledge of Kotlin programming

What is Editable?

Editable is an interface in Android that represents a mutable sequence of characters. It is used in TextViews and EditTexts to represent the current text that a user is typing or has typed.

Why would you want to convert Editable to Int?

There may be situations where you need to convert the text entered by a user into an integer value. For example, if the user is entering their age, you would want to validate that the input is a valid integer before proceeding.

Solution

To convert an Editable object to an Int in Kotlin, you can use the toString() method to get the string representation of the Editable object, and then use the toIntOrNull() method to convert the string to an Int.

val ageEditText = findViewById<EditText>(R.id.age_edit_text)
val ageString = ageEditText.text.toString()
val age: Int? = ageString.toIntOrNull()

if (age == null) {
    // Invalid input
} else {
    // Valid input
}

In the code snippet above, we first retrieve the EditText object and get the text as a String. We then convert the String to an Int using toIntOrNull(), which returns null if the String is not a valid integer.

Conclusion

In this tutorial, we learned how to convert an Editable object to an Int in Kotlin. We hope you found this tutorial helpful! If you have any questions or comments, please let us know in the comments below.