app/src/main/res/drawable/location.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="false">
        <layer-list>
            <item>
                <shape android:shape="oval">
                    <solid android:color="@color/unselected_option_bg"/>
                    <padding
                        android:left="@dimen/toggle_button_padding"
                        android:right="@dimen/toggle_button_padding"
                        android:top="@dimen/toggle_button_padding"
                        android:bottom="@dimen/toggle_button_padding"/>
                </shape>
            </item>
            <item
                android:drawable="@drawable/location_off"/>
        </layer-list>
    </item>
    <item android:state_checked="true">
        <layer-list>
            <item>
                <shape android:shape="oval">
                    <solid android:color="@color/selected_option_bg"/>
                    <padding
                        android:left="@dimen/toggle_button_padding"
                        android:right="@dimen/toggle_button_padding"
                        android:top="@dimen/toggle_button_padding"
                        android:bottom="@dimen/toggle_button_padding"/>
                </shape>
            </item>
            <item
                android:drawable="@drawable/location_on"/>
        </layer-list>
    </item>
</selector>