make searchBar and searchDisplayController look like normal input field

Question

I've got a search bar within a UITableView, but when I click the search bar, the UITableView takes up the entire space of the ViewController while it should always perform as a subview and stay in the width it was given. Secondly, I want to get the search bar to look like a normal input field as on paper: just a straight line underneath instead of borders all around.

It'd be great if somehow could answer both of the questions asked here.

I've included a visual for reference, the first is the view before, the other one when the UISearchBar is active.

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Update

I've figured out how to stop the UITableView from going fullscreen, by replacing the UISearchDisplayController for a UISearchBar. However, now my search functionality does not work anymore.

Answer 1

Problem solved: in order to prevent the TableView from going fullscreen, I changed UISearchDisplayController for a UISearchBar and changed the delegate methods of search into: -(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText