If we see a spinner it looks like a textview and with an image to the right of textview. In Motorola milestone that image is down arrow while in Samsung galaxy ace it is rig
You want to change the spinner selector
This is done with:
<Spinner android:id="@+id/my_spinner"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:drawSelectorOnTop="true"
android:spinnerSelector="@drawable/myspinner_selector">
and in myspinner_selector.xml
:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_first="true"
android:state_dropdown_showing="true"
android:drawable="@drawable/btn_dropdown_down"/>
<!-- other states ... -->
</selector>