ActionBarSherlock - How to set the padding of each actionbar's icon?

Question

How can I make the icons of the actionbar using ActionBarSherlock closer or further away from each other? Something like android:layout_marginLeftor android:paddingRight?

If I just add the icons on the actionbar they are further away compare to the screenshot of Soundhound below:

my themes.xml:

<style name="Theme.AstraTheme_Purple" parent="@style/Theme.Sherlock">
    <item name="actionBarStyle">@style/Widget.AstraTheme_Purple.ActionBar</item>
    <item name="android:actionBarStyle">@style/Widget.AstraTheme_Purple.ActionBar</item>

    <item name="actionButtonStyle">@style/Widget.AstraTheme_Purple.ActionButton</item>
    <item name="android:actionButtonStyle">@style/Widget.AstraTheme_Purple.ActionButton</item>
</style>

<style name="Widget.AstraTheme_Purple.ActionBar" parent="Widget.Sherlock.ActionBar">
    <item name="android:background">@drawable/purple_bar</item>
    <item name="background">@drawable/purple_bar</item>
</style>

<style name="Widget.AstraTheme_Purple.ActionButton" parent="Widget.Sherlock.ActionButton">
    <item name="android:minWidth">50dip</item>
</style>

Answer 1

<style name="AppTheme" parent="Theme.Sherlock">
    <item name="actionButtonStyle">@style/MyActionButtonStyle</item>
    <item name="android:actionButtonStyle">@style/MyActionButtonStyle</item>
</style>

<style name="MyActionButtonStyle" parent="Widget.Sherlock.ActionButton">
    <item name="android:minWidth">32dip</item>
    <item name="android:padding">0dip</item>
</style>

The default value of android:minWidth for the ActionBar buttons is 56dip. Don't forget to set @style/AppTheme as the Activity's theme.