UISearchBar in UICollectionReusableView?

[Susan Cudmore]

Hi All,

I wrote the following on the Apple Dev forum this morning, but I don't have
high hopes of getting a response so I thought I'd shoot it out here. I'm
trying to figure out if it is my bug or Apple's bug that is giving me
trouble.

Thanks for any insight!

/Sue






*Trouble adding UISearchBar to UICollectionReusableView header*

I would like to add a UISearchBar to the header of a UICollectionView so
that I can hide the searchBar off screen (with a content offset) until the
user pulls it into view and I also want the bouncing behavior that comes
with collection view.

I'm having trouble accessing the UISearchDisplayController and setting it's
searchBar to the one I created.

I've tried creating the UISearchBar programatically in my VC that is
delegate for the UISearchDisplayController and the UISearchBar. I've also
tried adding the UISearchBar to the reusable header view in IB.



I had it mostly working with a programatic creation of the searchBar in -
(UICollectionReusableView *)collectionView:(UICollectionView
*)collectionView viewForSupplementaryElementOfKind:(NSString *)kind
atIndexPath:(NSIndexPath *)indexPath   except that the reusable view seemed
to "cover" the searchBar at various places as I scrolled it on and off the
screen. And sometimes the Cancel method would not fire. I think the last
problem may have been due to a different than expected searchBar being
assigned to the UISearchDisplayController.



I've also tried holding onto a programmatically created
UISearchDisplayController (previous posts point to retaining it in this
manner).



Has anyone had success adding a UISearchBar to a collection view? Is what
I'm trying to do technically impossible even though it works for
UITableView?


- (UICollectionReusableView *)collectionView:(UICollectionView
*)collectionView viewForSupplementaryElementOfKind:(NSString *)kind
atIndexPath:(NSIndexPath *)indexPath



Here's my sample code that works except that the searchBar gets clipped
from the top in various locations as the reusable view is scrolled on and
off screen. And, sometimes the cancel button fires and sometimes it doesn't
after the reusable view is freshly dequeued.




- (UICollectionReusableView *)collectionView:(UICollectionView
*)collectionView viewForSupplementaryElementOfKind:(NSString *)kind
atIndexPath:(NSIndexPath *)indexPath


{

    UICollectionReusableView* reusableView;



    if (kind == UICollectionElementKindSectionHeader) {



        UICollectionReusableView *headerView = [collectionView
dequeueReusableSupplementaryViewOfKind:UICollectionElementKindSectionHeader
withReuseIdentifier:@"HeaderView" forIndexPath:indexPath];



        if (!self.searchBar)

        {

            self.searchBar = [[UISearchBar alloc]
initWithFrame:CGRectMake(0, 0, 320, 44)];

        }

        [self configureSearchBar];

        [headerView addSubview:self.searchBar];

        [self pinSearchBarto:headerView];



        if (!self.searchController)

        {

            self.searchController = [[UISearchDisplayController alloc]
initWithSearchBar:self.searchBar contentsController:self];

        }

        self.searchController.searchResultsDataSource = self;

        self.searchController.searchResultsDelegate = self;

        self.searchController.delegate = self;

        reusableView = headerView;

    }

    return reusableView;

}
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.mactechgroup.org/pipermail/mactechgroup-discuss/attachments/20131008/a3432f87/attachment.html>