Changing overflow icon in the action bar

You can with a style, but you have to add it to the main Theme declaration.

<resources> 

<!-- Base application theme. -->

<style name="Your.Theme" parent="@android:style/Theme.Holo">

<!-- Pointer to Overflow style ***MUST*** go here or it will not work --> 

<item name="android:actionOverflowButtonStyle">@style/OverFlow</item> 

</style> 

<!-- Styles --> 

<style name="OverFlow" parent="@android:style/Widget.Holo.ActionButton.Overflow"> 

<item name="android:src">@drawable/ic_action_overflow</item> 

</style>

</resources>