Android: How to Make A Drawable Selector -

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i feel kind of silly question, here go anyways. have image button, , want able change it's image everytime clicked. api seems best way go doing create xml resource in drawable folder contains selector , values. when go make new android xml resource, there's no option drawables. missing?

as far know, android xml editor doesn't allow create xml drawables. have go source tab (labeled: filename.xml) , paste in text manually. should like:

<?xml version="1.0" encoding="utf-8"?> <selector xmlns:android="http://schemas.android.com/apk/res/android">     <item android:state_enabled="false"          android:drawable="@drawable/cell_top_selected" />     <item android:drawable="@drawable/cell_top" /> </selector>

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