How to change button text with button click listener in Kotlin

In this android kotlin source code example, we are going to change button text when the button is clicked in Kotlin.

You can copy and adopt this source code example to your Kotlin android project without reinventing the wheel.

Below is a step by step source code to change button text when the button is clicked in Kotlin

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".Button.ButtonActivity15">

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/changeTextBtn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorAccent"
        android:textColor="#ffffff"
        android:text="Change Button Text"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.appcompat.widget.AppCompatButton
import com.bluapp.kotlinview.R

class ButtonActivity15 : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_button15)
        val changeTextBtn = findViewById<AppCompatButton>(R.id.changeTextBtn);
        changeTextBtn.setOnClickListener {
            changeTextBtn.text = "Text Change"
        }
    }
}

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