res/drawable/button_bg.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <selector
   3   xmlns:android="http://schemas.android.com/apk/res/android">
   4     <item android:state_enabled="false" android:drawable="@drawable/button_bg_disabled" />
   5     <item android:state_pressed="true" android:drawable="@drawable/button_bg_pressed" />
   6     <item android:state_focused="true" android:drawable="@drawable/button_bg_focused" />
   7     <item android:drawable="@drawable/button_bg_default" />
   8 </selector>