Change spinner style (Android)

You must create a new xml file. spinner.xml

spinner_pressed and spinner_normal are the images and they should end with .9.png

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
     <item
           android:state_pressed="true"
           android:drawable="@drawable/spinner_pressed" />
     <item
           android:drawable="@drawable/spinner_normal" />
</selector>

After that put this where is declar Spinners

<Spinner

.....  

android:background="@drawable/spinner.xml"

.....

/>