If you use a complex ActionBar, then the tabs fit into the portrait and part of the ActionBar in the landscape.
Then simply create a style specifically for the portrait, than black text on white stacked tabs and a style for landscape mode that has white text on blue ActionBar + tabs.
Write each style in a separate styles.xml file and place it accordingly in the values ββand values ββ- ground (for landscape) folders. This is what I did, and it works great.
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