Convert String obtained from edittext to Integer in Kotlin language

Question

I am trying to make a simple Android application using Kotlin language. I have one EditText, I am getting its value in String but I want to convert that value into an integer. How can I convert this string to integer in Kotlin language?.

Google it. kotlinlang.org/api/latest/jvm/stdlib/kotlin.text/to-int.html — Alex Romanov
– Alex Romanov, Commented Jun 30, 2017 at 8:28

scottstoll2017 · Accepted Answer · 2017-11-05 07:11:08Z

30

The above is the general idea but here is a syntax straight out of Android Studio, from a different tutorial I'm doing.

Note that the compiler was perfectly happy to do a cast of a cast.

var myNewInt: Int = myEditTextView.text.toString().toInt()

answered Nov 5, 2017 at 7:11

scottstoll2017

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zsmb13 · Accepted Answer · 2017-06-30 08:25:55Z

25

You can use .toInt():

val myNumber: Int = "25".toInt()

Note that it throws a NumberFormatException if the content of the String is not a valid integer.

If you don't like this behavior, you can use .toIntOrNull() instead (since Kotlin 1.1):

val myNumOrNull: Int? = "25".toIntOrNull()

answered Jun 30, 2017 at 8:25

zsmb13

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Maryam Azhdari · Accepted Answer · 2020-01-03 18:10:43Z

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the returned value of (edittext.text) in kotlin is a editable? value and at the first you must convert that to string

edittext.text.toString().toInt()

answered Jan 3, 2020 at 18:10

Maryam Azhdari

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