styles.xml

<resources> 
 
    <!-- Base application theme. --> 
    <style name="AppTheme" parent="Base.Theme.AppCompat.Light.DarkActionBar"> 
        <item name="android:actionBarStyle">@style/ActionBar</item> 
    </style> 
    <style name="ActionBar" parent="Base.Theme.AppCompat.Light.DarkActionBar"> 
        <item name="android:icon">@drawable/icon_igem</item> 
    </style> 
</resources>