Android check box preference with check box replaced by radio button

preference_widget_radiobutton.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Layout used by CheckBoxPreference for the checkbox style. This is inflated
     inside android.R.layout.preference. -->
<RadioButton android:id="@+android:id/checkbox"
             xmlns:android="http://schemas.android.com/apk/res/android"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
             android:layout_gravity="center"
             android:clickable="false"
             android:focusable="false"/>

RadioButtonPreference.java

public class RadioButtonPreference extends CheckBoxPreference {

    public RadioButtonPreference(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
        setWidgetLayoutResource(R.layout.preference_widget_radiobutton);
    }

    public RadioButtonPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        setWidgetLayoutResource(R.layout.preference_widget_radiobutton);
    }

    public RadioButtonPreference(Context context) {
        this(context, null);
    }

    @Override
    public void onClick() {
        if (this.isChecked()) {
            return;
        }
        super.onClick();
    }
}