I am trying to create a custom UISearchBar that is placed as the titleView of a navigationController. Using the following code, the suggestionTableView of suggestions appears perfectly; however, It does not recognize any taps. In fact, it is like the suggestionTableView isn't even there because my taps are being sent to another view under the suggestion suggestionTableView. I was told that I could use hitTest(...) to catch these touches, but I don't know how I would implement this in my SuggestionSearchBar or in my ViewController. How can I send these touches to the suggestionTableView?
SuggestionSearchBar
class SuggestionSearchBar: UISearchBar, UISearchBarDelegate {
var suggestionTableView = UITableView(frame: .zero)
let allPossibilities: [String]!
var possibilities = [String]()
//let del: UISearchBarDelegate!
init(del: UISearchBarDelegate, dropDownPossibilities: [String]) {
self.allPossibilities = dropDownPossibilities
super.init(frame: .zero)
isUserInteractionEnabled = true
delegate = del
searchTextField.addTarget(self, action: #selector(searchBar(_:)), for: .editingChanged)
searchTextField.addTarget(self, action: #selector(searchBarCancelButtonClicked(_:)), for: .editingDidEnd)
sizeToFit()
addTableView()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func addTableView() {
let cellHeight = UITableViewCell(style: UITableViewCell.CellStyle.default, reuseIdentifier: "").frame.height
suggestionTableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
suggestionTableView.backgroundColor = UIColor.clear
//suggestionTableView.separatorStyle = .none
suggestionTableView.tableFooterView = UIView()
addSubview(suggestionTableView)
suggestionTableView.delegate = self
suggestionTableView.dataSource = self
suggestionTableView.translatesAutoresizingMaskIntoConstraints = false
NSLayoutConstraint.activate([
suggestionTableView.topAnchor.constraint(equalTo: bottomAnchor),
suggestionTableView.rightAnchor.constraint(equalTo: rightAnchor),
suggestionTableView.leftAnchor.constraint(equalTo: leftAnchor),
suggestionTableView.heightAnchor.constraint(equalToConstant: cellHeight*6),
])
hideSuggestions()
}
func showSuggestions() {
let sv = suggestionTableView.superview
sv?.clipsToBounds = false
suggestionTableView.isHidden = false
}
func hideSuggestions() {
suggestionTableView.isHidden = true
}
@objc func searchBar(_ searchBar: UISearchBar) {
print(searchBar.text?.uppercased() ?? "")
showSuggestions()
possibilities = allPossibilities.filter {$0.contains(searchBar.text?.uppercased() ?? "")}
print(possibilities.count)
suggestionTableView.reloadData()
if searchBar.text == "" || possibilities.count == 0 {
hideSuggestions()
}
}
@objc func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
hideSuggestions()
}
}
extension SuggestionSearchBar: UITableViewDataSource, UITableViewDelegate {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return possibilities.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = suggestionTableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.backgroundColor = UIColor(red: 0.25, green: 0.25, blue: 0.25, alpha: 0.75)
if traitCollection.userInterfaceStyle == .light {
cell.backgroundColor = UIColor(red: 1, green: 1, blue: 1, alpha: 0.75)
}
cell.textLabel?.text = possibilities[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
//add method that fills in and searches based on the text in that indexpath.row
print("selected")
}
}
ViewController
import UIKit
class ViewController: UIViewController {
lazy var searchBar = SuggestionSearchBar(del: self, dropDownPossibilities: ["red","green","blue","yellow"])
override func viewDidLoad() {
super.viewDidLoad()
setUpUI()
}
func setUpUI() {
setUpSearchBar()
}
}
extension ViewController: UISearchBarDelegate {
func setUpSearchBar() {
searchBar.searchBarStyle = UISearchBar.Style.prominent
searchBar.placeholder = "Search"
searchBar.sizeToFit()
searchBar.isTranslucent = false
searchBar.backgroundImage = UIImage()
searchBar.delegate = self
navigationItem.titleView = searchBar
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
print(searchBar.text!)
}
func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
searchBar.endEditing(true)
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
}
}
