Change Background of Android ToggleButton on check state change

How you change background of Toggle Button when you toggle the check state of button ?



using selector in android

see example of background.xml

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/bar2_02" android:state_checked="true"/>
    <item android:drawable="@drawable/bar2_01" android:state_checked="false"/>
    <item android:drawable="@drawable/bar2_01"></item>
</selector>

for call this selector xml(background.xml) in toogle button

<ToggleButton
                android:id="@+id/sbar2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:background="@drawable/background.xml"
                android:button="@null"
                android:textOff=""
                android:textOn="" />