UISearchBar取消按钮无操作

Question

My UISearchBar's cancel button doesn't seem to do anything when clicked. Here is my current code:

var searchBar = UISearchBar()

and in my ViewDidLoad :

searchBar.sizeToFit()
searchBar.searchBarStyle = .minimal
searchBar.placeholder = "Search City"
searchBar.showsCancelButton = true
searchBar.delegate = self
myTable.tableHeaderView = searchBar

Wondering if you can help me figure out what's wrong with my SearchBar and why the cancel button doesn't give any action.

Answer 1

Implement SearchBar Delegate

func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
    searchBar.setShowsCancelButton(false, animated: true)
    searchBar.resignFirstResponder() 
}

You can also hide and show cancel button as follow:

searchBar.setShowsCancelButton(false, animated: true)