I am trying to remove the separator between the ActionBar and the tabs, but I have not succeeded yet. I tried this <item name="android:actionBarDivider">@color/tab_color</item> in my .xml style but nothing. In a few words, I would like to have something like this: 
Here is my style.xml:
<style name="AppTheme" parent="Theme.AppCompat.Light"/> <style name="Theme.Styled" parent="@style/Theme.AppCompat.Light"> <item name="android:windowContentOverlay">@null</item> <item name="android:windowDisablePreview">true</item> <item name="android:actionBarItemBackground">@drawable/selectable_background_example</item> <item name="android:actionBarTabStyle">@style/Widget.Styled.ActionBar.TabView</item> <item name="android:actionBarStyle">@style/Widget.Styled.ActionBar</item> <item name="android:actionBarTabTextStyle">@style/MyCustomTabView</item> <item name="android:actionBarDivider">@color/tab_color</item> </style> <style name="Widget.Styled.ActionBar.TabView" parent="@style/Widget.AppCompat.Light.ActionBar.TabView"> <item name="android:background">@drawable/tab_indicator_ab_example</item> <item name="android:width">30dp</item> </style> <style name="Widget.Styled.ActionBar" parent="@style/Widget.AppCompat.Light.ActionBar.Solid"> <item name="android:background">@color/tab_color</item> <item name="android:backgroundStacked">@drawable/ab_stacked_solid_example</item> <item name="android:backgroundSplit">@color/tab_color</item> <item name="android:textColor">@color/tab_text</item> <item name="android:titleTextStyle">@style/MyActionBarTextColor</item> <item name="android:actionBarDivider">@color/tab_color</item> </style> <style name="MyActionBarTextColor" parent="TextAppearance.AppCompat.Widget.ActionBar.Title"> <item name="android:textColor">@color/tab_text</item> </style> <style name="MyCustomTabView" parent="Theme.AppCompat.Light"> <item name="android:textColor">#ffffff</item> <item name="android:textSize">14dp</item> <item name="android:textStyle">bold</item> </style>
This is what I have 
source share