I am working with XOOM and trying to hide action bar. So i follow the instruction did the following in manifest file:
uses-sdk android:minSdkVersion=\"11\" an
you can hide the action bar (which will display in the top of the screen). If your activity is tab activity then use the following line after the setcontentview line
getParent().getActionBar().hide();
If it is a normal activity then use
getActionBar().hide();
And setting on manifest is also working for me, but only to the particular activity you can set like this not to application.
android:theme="@android:style/Theme.Holo.NoActionBar"