How to dynamically change Radio Button color in Kotlin

In this android kotlin source code example, we are going to dynamically change the color of Radio Button 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 dynamically change the color of Radio Button 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:id="@+id/constraintLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"    tools:context=".TextViewAndRadioButton.TextViewAndRadioButtonActivity14">

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

import android.content.res.ColorStateList
import android.graphics.Color
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.ViewGroup
import android.widget.RadioButton
import android.widget.RadioGroup
import androidx.constraintlayout.widget.ConstraintLayout
import androidx.constraintlayout.widget.ConstraintSet
import com.bluapp.kotlinview.R

class TextViewAndRadioButtonActivity14 : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_text_view_and_radio_button14)
        val constraintLayout = findViewById(R.id.constraintLayout) as ConstraintLayout
        val conParam = ConstraintLayout.LayoutParams(
            ViewGroup.LayoutParams.MATCH_PARENT,
            ViewGroup.LayoutParams.WRAP_CONTENT
        )
        conParam.topToTop = ConstraintSet.PARENT_ID
        conParam.bottomToBottom = ConstraintSet.PARENT_ID
        conParam.startToStart = ConstraintSet.PARENT_ID
        conParam.endToEnd = ConstraintSet.PARENT_ID
        val radioGroup = RadioGroup(this)
        radioGroup.orientation = RadioGroup.VERTICAL
        val colorstatelist = ColorStateList(
            arrayOf(
                intArrayOf(-android.R.attr.state_enabled),
                intArrayOf(android.R.attr.state_enabled)
            ),
            intArrayOf(Color.BLACK, Color.GREEN)
        )
    val malebutton = RadioButton(this)
        malebutton.text = "Male"
        malebutton.setTextColor(Color.BLACK)
        malebutton.buttonTintList = colorstatelist
        radioGroup.addView(malebutton)
        val femalebutton = RadioButton(this)
        femalebutton.text = "Female"
        femalebutton.setTextColor(Color.BLACK)
        femalebutton.buttonTintList = colorstatelist
        radioGroup.addView(femalebutton)
        constraintLayout.addView(radioGroup, conParam)
    }
}

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