Add radio buttons to your app

Try the Compose way
Jetpack Compose is the recommended UI toolkit for Android. Learn how to add components in Compose.
Radio buttons →

Radio buttons let the user select one option from a set of mutually exclusive options. Use radio buttons if the user needs to see all available options listed. If it's not necessary to show all options, use a spinner instead.

An example of radio buttons from material.io
Figure 1. An example of radio buttons from Material Design.

To create each radio button option, create a RadioButton in your layout. Because radio buttons are mutually exclusive, group them inside a RadioGroup. The system ensures that only one radio button within a group can be selected at a time.

Respond to click events

When the user selects a radio button, the corresponding RadioButton object receives an on-click event.

The following example shows a reaction to the user tapping a RadioButton object in a group:

<?xml version="1.0" encoding="utf-8"?>
<RadioGroup
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">
    <RadioButton android:id="@+id/radio_pirates"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Pirates"/>
    <RadioButton android:id="@+id/radio_ninjas"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Ninjas"/>
</RadioGroup>

Within the Activity or Fragment that hosts this layout, find your radio buttons and set a change listener for each of them, as follows:

Kotlin

findViewById<RadioButton>(R.id.radio_pirates).setOnCheckedChangeListener { buttonView, isChecked ->
    Log.d("RADIO", "Pirates is checked: $isChecked")
}

findViewById<RadioButton>(R.id.radio_ninjas).setOnCheckedChangeListener { buttonView, isChecked ->
    Log.d("RADIO", "Ninjas is checked: $isChecked")
}

Java

findViewById<RadioButton>(R.id.radio_pirates).setOnCheckedChangeListener { buttonView, isChecked ->
    Log.d("RADIO", "Pirates is checked: $isChecked");
}

findViewById<RadioButton>(R.id.radio_ninjas).setOnCheckedChangeListener { buttonView, isChecked ->
    Log.d("RADIO", "Ninjas is checked: $isChecked");
}

In this example, when the user taps one of the radio buttons, a message prints in Logcat.