searchbarsearchbuttonclicked not called in UICollectionViewController

Question

I have a class and use UICollectionViewController, UICollectionViewDelegateFlowLayout , UISearchBarDelegate

I want use searchbar in Navigation View , but when I clicked on Cancel Button or SearchButton , searchBarSearchButtonClicked and searchBarCancelButtonClicked , non of them was called.

but I use this function and this func was called :

func searchBar(searchBar: UISearchBar, textDidChange searchText:        String) {
    println("search is working ")
}

this is my viewDidload func:

 override func viewDidLoad() {

    super.viewDidLoad()   

    let searchBar = UISearchBar()
    searchBar.delegate = self
    searchBar.sizeToFit()
    navigationItem.titleView = searchBar

}

and this is search and cancel func:

func searchBarCancelButtonClicked(searchBar: UISearchBar) {
    println("cancel button called")
}

func searchBarSearchButtonClicked(searchBar: UISearchBar) {
    println("search button called")

}

So , what is wrong? searchBar func is called when I write something in searchbar but when click on searchButton and cancel button nothing happen!?

Answer 1

I use simulator iphone ,So search button is enter button of keyboard but I used another button , then nothing happen. now I use enter , and every thing is ok. this is very funny!:D