I have the exact same problem. the search bar is still there and can receive touch events. it is however not rendered. I believe the problem is in UISearchDisplaycontroller because it renders fine if I don't use UISearchDisplayController. I ended up writing a custom SearchDisplaycontroller to replace it. it is very basic and only does what I need.
use it is the same way as you would the normal UISearchDisplayController but self.searchDisplayController will not return anything. you will have to use another pointer to refer to the custom search display controller.
looks like a big ugly work around, but the only one that worked for me. keen to hear of alternatives.
@protocol SearchDisplayDelegate;
@interface SearchDisplayController : NSObject<UISearchBarDelegate>
- (id)initWithSearchBar:(UISearchBar *)searchBar contentsController:(UIViewController *)viewController;
@property(nonatomic,assign) id<SearchDisplayDelegate> delegate;
@property(nonatomic,getter=isActive) BOOL active; // configure the view controller for searching. default is NO. animated is NO
- (void)setActive:(BOOL)visible animated:(BOOL)animated; // animate the view controller for searching
@property(nonatomic,readonly) UISearchBar *searchBar;
@property(nonatomic,readonly) UIViewController *searchContentsController; // the view we are searching (often a UITableViewController)
@property(nonatomic,readonly) UITableView *searchResultsTableView; // will return non-nil. create if requested
@property(nonatomic,assign) id<UITableViewDataSource> searchResultsDataSource; // default is nil. delegate can provide
@property(nonatomic,assign) id<UITableViewDelegate> searchResultsDelegate;
@end
@protocol SearchDisplayDelegate <NSObject>
// implement the protocols you need
@optional
@end
the implementation
@implementation SearchDisplayController {
UISearchBar *_searchBar;
UIViewController *_viewController;
UITableView *_searchResultsTableView;
UIView *_overLay;
}
- (void)dealloc {
[_searchBar release];
[_searchResultsTableView release];
[_overLay release];
[super dealloc];
}
- (UIViewController *)searchContentsController {
return _viewController;
}
- (UITableView *)searchResultsTableView {
return _searchResultsTableView;
}
- (id)initWithSearchBar:(UISearchBar *)searchBar contentsController:(UIViewController *)viewController {
self = [super init];
if (self) {
_searchBar = [searchBar retain];
_searchBar.delegate = self;
_viewController = viewController;
_searchResultsTableView = [[UITableView alloc]initWithFrame:CGRectMake(0, CGRectGetMaxY(_searchBar.frame), _viewController.view.frame.size.width, _viewController.view.frame.size.height - CGRectGetMaxY(_searchBar.frame))];
_overLay = [[UIView alloc]initWithFrame:_searchResultsTableView.frame];
_overLay.backgroundColor = [UIColor colorWithWhite:0 alpha:0.5];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(overLayTapped)];
[_overLay addGestureRecognizer:tap];
[tap release];
}
return self;
}
- (void)setSearchResultsDataSource:(id<UITableViewDataSource>)searchResultsDataSource {
_searchResultsTableView.dataSource = searchResultsDataSource;
}
- (void)setSearchResultsDelegate:(id<UITableViewDelegate>)searchResultsDelegate {
_searchResultsTableView.delegate = searchResultsDelegate;
}
- (void)overLayTapped {
[self setActive:NO animated:YES];
[_searchBar resignFirstResponder];
_searchBar.text = nil;
_searchBar.showsCancelButton = NO;
}
- (void)setActive:(BOOL)visible animated:(BOOL)animated {
UIView *viewToAdd = nil;
if (!_searchBar.text.length) {
viewToAdd = _overLay;
} else {
viewToAdd = _searchResultsTableView;
}
float a = 0;
if (visible) {
[_viewController.view addSubview:viewToAdd];
a = 1.0;
}
if ([_viewController.view respondsToSelector:@selectore(scrollEnabled)]) {
((UIScrollView *)_viewController.view).scrollEnabled = !visible;
}
if (animated) {
[UIView animateWithDuration:0.2 animations:^{
_overLay.alpha = a;
_searchResultsTableView.alpha = a;
}];
} else {
_overLay.alpha = a;
_searchResultsTableView.alpha = a;
}
}
- (void)setActive:(BOOL)active {
[self setActive:active animated:YES];
}
#pragma mark - UISearchBar delegate protocols
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
[self setActive:YES animated:YES];
searchBar.showsCancelButton = YES;
[_searchResultsTableView reloadData];
}
- (void)searchBarTextDidEndEditing:(UISearchBar *)searchBar {
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
[_searchResultsTableView reloadData];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
[self overLayTapped];
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
if (searchText.length) {
[_overLay removeFromSuperview];
[_viewController.view addSubview:_searchResultsTableView];
} else {
[_searchResultsTableView removeFromSuperview];
[_viewController.view addSubview:_overLay];
}
[_searchResultsTableView reloadData];
}
@end
Update: on how to use this progammatically
declare an ivar
SearchDisplayController *mySearchDisplayController;
initialize it programmatically
mySearchDisplayController = [[SearchDisplayController alloc]initWithSearchBar:mySearchBar contentsController:self];
adding the searchbar to your tableview
self.tableView.headerView = mySearchBar;
use mySearchDisplayController as reference to the custon class instead on self.searchDisplayController.
