How to clear Radio Group in Kotlin

In this android kotlin source code example, we are going to clear Radio Group 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 clear Radio Group 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=".TextViewAndRadioButton.TextViewAndRadioButtonActivity16">

    <RadioGroup
        android:id="@+id/radioGroup"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintBottom_toBottomOf="parent">

        <RadioButton
            android:id="@+id/maleBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Male"/>

        <RadioButton
            android:id="@+id/femaleBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Female"/>

    </RadioGroup>

    <Button
        android:id="@+id/clearRadioGrp"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorAccent"
        android:text="Clear RadioGroup"
        android:textColor="#ffffff"
        android:layout_marginTop="10dp"
        app:layout_constraintTop_toBottomOf="@id/radioGroup"/>

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.kt

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Button
import android.widget.RadioGroup
import android.widget.Toast
import com.bluapp.kotlinview.R

class TextViewAndRadioButtonActivity16 : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_text_view_and_radio_button16)
        val radioGroup = findViewById(R.id.radioGroup) as RadioGroup
        val clearRadioGrp = findViewById(R.id.clearRadioGrp) as Button
        clearRadioGrp.setOnClickListener {
            Toast.makeText(this@TextViewAndRadioButtonActivity16, "Radio Group Cleared", Toast.LENGTH_LONG).show()
            radioGroup.clearCheck()
        }
    }
}

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