At one point this was working fine and, obviously, something has changed. When I leave the viewController that loads the searchDisplayController my app is sending a message to a deallocated instance. The stack is why I believe it’s the searchDisplayController:

Looking over my code, I’m not sure where it gets deallocated. I’d appreciate any ideas. Thanks.
EDIT:
I should add that if I comment out my viewDidDisappear method, the crashes stop.
-(void)viewDidDisappear:(BOOL)animated {
// save the state of the search UI so that it can be restored if the view is re-created
self.searchWasActive = [self.searchDisplayController isActive];
self.savedSearchTerm = [self.searchDisplayController.searchBar text];
self.savedScopeButtonIndex = [self.searchDisplayController.searchBar selectedScopeButtonIndex];
}
Here are the relevant bits:
@interface ShowAttributesViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchDisplayDelegate, UISearchBarDelegate>
{
IBOutlet UITableView *attributesTableView;
NSString *savedSearchTerm;
NSInteger savedScopeButtonIndex;
BOOL searchWasActive;
}
@property (nonatomic, retain) UITableView *attributesTableView;
@property (nonatomic, retain) NSMutableArray *filteredattributesArray;
@property (nonatomic, copy) NSString *savedSearchTerm;
@property (nonatomic) NSInteger savedScopeButtonIndex;
@property (nonatomic) BOOL searchWasActive;
- (void)viewDidLoad
{
[super viewDidLoad];
self.filteredattributesArray = [NSMutableArray arrayWithCapacity:[[[SharedAppData sharedStore] attributesArray] count]];
if (self.savedSearchTerm)
{
[self.searchDisplayController setActive:self.searchWasActive];
[self.searchDisplayController.searchBar setSelectedScopeButtonIndex:self.savedScopeButtonIndex];
[self.searchDisplayController.searchBar setText:savedSearchTerm];
self.savedSearchTerm = nil;
}
}
-(void)viewDidDisappear:(BOOL)animated {
self.searchWasActive = [self.searchDisplayController isActive];
self.savedSearchTerm = [self.searchDisplayController.searchBar text];
self.savedScopeButtonIndex = [self.searchDisplayController.searchBar selectedScopeButtonIndex];
}
-(void)viewDidUnload {
self.filteredattributesArray = nil;
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[self filterContentForSearchText:searchString];
return YES;
}
- (void)searchDisplayController:(UISearchDisplayController *)controller willUnloadSearchResultsTableView:(UITableView *)tableView {
[attributesTableView reloadData];
}
After a lot of digging, like others, I found this post that resolves the issue.
UISearchDisplayController autorelease crash