Layout changes are not reflecting in the application

I have created a button widget with custom images by referring this article. I have set images for onclick and onfocus. But I can only see the normal image for the button, nothing changes when I focus or press the butto开发者_运维技巧n.

Here is my code:

custom_button.xml:

<?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/ic_reload_4" />
    <item 
        android:drawable="@drawable/ic_reload_2"
        android:state_pressed="true" />
    <item 
        android:drawable="@drawable/ic_reload_3"
        android:state_focused="true" />
</selector>

Layout:

<Button 
    android:id="@+id/reload_btn"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" 
    android:background="@drawable/custom_button" />

Images are placed in the drawable folder. I m not sure why its not working. I have also faced issues with the layout,ie I can see the changes in the eclipse when selecting the 'layout' tab but its not shown in the application after updating it. Can anyone help me on this...

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Your selector should be like this:

    <?xml version="1.0" encoding="UTF-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item 
        android:drawable="@drawable/ic_reload_2"
        android:state_pressed="true" />
    <item 
        android:drawable="@drawable/ic_reload_3"
        android:state_focused="true" />
 <item android:drawable="@drawable/ic_reload_4" />
</selector>

I.e. you have to place the default item to the end. It seems that android inflates this like a switch-case block.