UISearchController不会触发委托方法和搜索栏委托方法
问题描述:
所以我有UISearchController,它显示栏,我可以输入文本但它不会触发委托方法。这里是我的代码:UISearchController不会触发委托方法和搜索栏委托方法
@IBAction func searchTapped(AnyObject) {
NSLog("search...")
let cancelButton = UIBarButtonItem(image: UIImage(named: "delete_sign-50"), landscapeImagePhone: nil, style: .Plain, target: self, action: "cancelTapped:")
var searchController = UISearchController(searchResultsController: nil)
searchController.dimsBackgroundDuringPresentation = false
searchController.searchBar.placeholder = "enter the text to search"
searchController.searchResultsUpdater = self;
searchController.hidesNavigationBarDuringPresentation = false
searchController.delegate = self
searchController.searchBar.delegate = self
self.definesPresentationContext = true;
UIView.animateWithDuration(0.2, animations: {() -> Void in
self.navigationItem.rightBarButtonItems = nil
self.navigationItem.rightBarButtonItems = [cancelButton]
self.navigationItem.titleView = searchController.searchBar
searchController.searchBar.sizeToFit()
self.toolbar.hidden = false
self.tableView?.hidden = false
})
//add first responser to search bar
searchController.searchBar.becomeFirstResponder()
}
func updateSearchResultsForSearchController(searchController: UISearchController) {
NSLog("1 %@", searchController.searchBar.text);
}
func searchBar(searchBar: UISearchBar, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
NSLog("2 %@", text)
return true
}
当文本改变时,这些方法都不会被调用。
不仅如此,我还尝试将searchController作为变量添加到我的控制器中,并且在那种情况下它可以运行焦炭 - 当我点击搜索栏时,它会离开屏幕。
答
searchController.active = YES;
这有帮助,不知道为什么它没有提到任何地方。
答
对于IOS 9
-(void)viewDidLoad
_searchController = [[UISearchController alloc] initWithSearchResultsController:self];
self.navigationItem.titleView = _searchController.searchBar;
self.definesPresentationContext = YES;
_searchController.delegate = self;
_searchController.searchBar.delegate = self;
_searchController.searchBar.placeholder = NSLocalizedString(@"SEARCHTITLE", nil);
[_searchController.searchBar setShowsCancelButton: YES animated: NO];
你有没有确认UISearchController委托。 – sample 2015-04-01 18:54:18