I don't have 3.0 installed and don't think you mentioned your OS. I'm not having a problem with search bar autorotation on 2.x, so will let you know how it's setup over here. Maybe it will apply to 3.0 as well. If you can also test on 2.x, that would be a good sanity check--it's important to know whether you're dealing with a behavior that started in 3.0.
Firstly, if you created your view in code, it might help to make a testbed that defines your view in IB. I would use the View-Based template for the testbed (Btw, I assume you have a root view under the search bar and table view; if not, that's likely to be the problem). Next, select the search bar and bring up the Size Inspector. Make sure only the horizontal spring is on, the bottom strut is off and the other 3 struts are on (In case you're unfamiliar with these settings, see
Setting a View’s Autosizing Behavior in the
Interface Builder User Guide). Both the content view and table view should have both springs and all 4 struts on. Of course you can make these same settings in code with the autoresizingMask property, but the next step requires IB.
If you have IB 3.1.1 or later, locate the curved arrow in the upper right corner of the view editor window. Clicking that arrow should toggle the view to landscape and back to portrait. See if the search bar has the correct dimensions each time you toggle that arrow. Do it several times to be sure. If the behavior isn't correct, go back to the Size Inspector panel and see what the frame settings are doing as you toggle the arrow. Reset the dimensions if necessary and repeat the test.
If you continue to have a problem, check the content view and table view with the Size Inspector and see if those frames are tracking correctly. When you can toggle the arrow repeatedly without any problem, go back to portrait and save the xib.
If the above doesn't directly apply, I hope the exercise gives you some useful ideas. Sometimes just isolating the view in a testbed can lead you to the answer.
\- Ray
p.s.: I forgot to factor in a nav controller. I would recommend building the test bed without the nav bar at first. If you get it working, then put everything onto a nav controller view and see if that's where the problem starts. If so, apply the same tweeking procedure. - R
