Cancel Button in UISearchController

问题

In my project I'm using a UITableViewController with an internal UISearchController to filter the data in my tableView.

I have no problem to filter the data but I need to make a date of my tableView reload when I click on the CANCEL button UISearchController but I can not find the delegate method for this ...

Can you help me understand how to solve this problem?

回答1:

You need to set the UISearchController searchBar's delegate. Once you have done this, the addition of the delegate method searchBarCancelButtonClicked: will properly be called.

self.searchController.searchBar.delegate = self;

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
}

回答2:

If you implement UISearchResultsUpdating protocol, you can know that cancelled is triggered when active is false.

func updateSearchResultsForSearchController(searchController: UISearchController) {
    if !searchController.isActive {
        print("Cancelled")
    }
}

来源：https://stackoverflow.com/questions/26400167/cancel-button-in-uisearchcontroller