Юрий Чорный

android:drawableRight="?android:attr/listChoiceIndicatorSingle"

<android.support.v7.widget.AppCompatRadioButton
        android:layout_width="match_parent"
        android:button="@null"
        android:drawableRight="?android:attr/listChoiceIndicatorSingle"
        android:layout_height="wrap_content"
        android:id="@+id/radioButton1"
        android:gravity="right"
        android:text="sdf"/>