Cara Menggunakan Radio Button | Komponen Android Studio

 

activity_pesan.xml

<RadioButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/rbPutra"
        android:checked="true"
        android:text="Putra Remaja"></RadioButton>
    <RadioButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/rbRosalia"
        android:text="Rosalia Indah"></RadioButton>
</RadioGroup>

PesanActivity.kt

var bus : Int = 0

rgBus.setOnCheckedChangeListener { group, checkedId ->
    bus = when(checkedId){
        R.id.rbPutra -> 1
        R.id.rbRosalia -> 2
        else -> 0
    }
}