Q:

keeping current theme and adding actionBar to app

I'm currently using the standard Theme.Light.NoTitleBar and would like to keep that, but to use an actionBar I have to use Theme.Sherlock as the parent. Is there a way around this? 
If not, how can I use Theme.Sherlock as a parent and keep what I had before? 

A:

If you use Theme.Light.NoTitleBar then ActionBar will not be shown. ActionBar is nothing but a type of TitleBar.
If you already have some theme with some styles and want to use the actionbar then try below
For Dark theme
<style name="YourTheme" parent="Theme.Sherlock"></style>

For Light theme
<style name="YourTheme" parent="Theme.Sherlock.Light"></style>

