UISearchController不在UITableViewController中搜索

Question

I have set up a UISearchController as a header for my tableview with the following code:

let mySearchController = UISearchController(searchResultsController: nil)

func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {

    let keywords = searchBar.text
    let finalKeywords = keywords?.replacingOccurrences(of: " ", with: "+")

    searchUrl = "https://api.spotify.com/v1/search?q=\(finalKeywords!)&type=track&limit=20"
    print(searchUrl)

    callAlamo(url: searchUrl)

}

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.register(postCell.self, forCellReuseIdentifier: cellId)
    tableView.separatorColor = .red

    mySearchController.dimsBackgroundDuringPresentation = false
    definesPresentationContext = true
    mySearchController.delegate = self as? UISearchControllerDelegate
    tableView.tableHeaderView = mySearchController.searchBar

}

I adde a breakpoint at the searchBarButtonClicked function and at the print(searchUrl) inside of the function, but it never went to the breakpoints. Why is the searchBarSearchButtonClicked function not executing when I click on the search bar?

Answer 1

You are setting the wrong delegate. A UISearchBarController as a delegate property, but the method you are implementing is a UISearchBarDelegate method, so you need to set your object as the delegate for the search bar contained within the `UISearchBarController:

mySearchController.searchBar.delegate = self