Creating a UISearchDisplayController programmatically

Question

I\'m trying to create a UISearchDisplayController programmatically. I have a method which should set up my search controller, but when I call it, nothing happen

Answer 1

Check out the example code in: [https://github.com/JayMarshal/GrabCasts.com-iPhone-Client/blob/master/CoreDataTableViewController.m][1]

Repo here: https://github.com/JayMarshal/Grabcasts

It is an expanded version of the coredatatableviewcontroller of the stanford iOS courses.

Relevant snippet of that code follows:

- (void)createSearchBar {
if (self.searchKey.length) {
    if (self.tableView && !self.tableView.tableHeaderView) {
        UISearchBar *searchBar = [[[UISearchBar alloc] init] autorelease];
        self.searchDisplayController 
               = [[UISearchDisplayController alloc] initWithSearchBar:searchBar
                                                   contentsController:self];
        self.searchDisplayController.searchResultsDelegate = self;
        self.searchDisplayController.searchResultsDataSource = self;
        self.searchDisplayController.delegate = self;
        searchBar.frame = CGRectMake(0, 0, 0, 38);
        self.tableView.tableHeaderView = searchBar;
    }
} else {
    self.tableView.tableHeaderView = nil;
}

Basically it attaches the UISearchDisplayController to self (which must be a tableviewcontroller) as a side effect of the initialization. So setting:

self.searchDisplayController.searchResultsDelegate = self;
self.searchDisplayController.searchResultsDataSource = self;

Instead of

myCon.searchResultsDataSource = self;
myCon.searchResultsDelegate = self;

Might do the trick. In debugging, check whether myCon and self.searchDisplayController are pointing to the same object?

Updated: there seems to be a bug in the SDC property of the TVC that it is not retained in the runloop. Filed as: http://openradar.appspot.com/10254897 also mentioned on SO, see UIViewController does not retain its programmatically-created UISearchDisplayController