How to hide a tableView after selecting a row - swift

Question

I have a textField, which when touch displays a tableView with some rows.
I'm trying to do this: when a user selects one of the rows, the value of row is placed in the textField and the tableView is closed.
The first part works well for me. The user touch on one row and the textField shows the value of that row. But if I want to close the tableview, I have to press twice on the row.
This is my code:
class Redactar_mensaje: UIViewController, UITableViewDataSource, UITableViewDelegate, UITextFieldDelegate {
var values = ["123 Main Street", "789 King Street", "456 Queen Street", "99 Apple Street", "red", "orange", "yellow", "green", "blue", "purple", "owaldo", "ostras", "Apple", "Pineapple", "Orange", "Adidas"]
#IBOutlet weak var campo_para: UITextField!
#IBOutlet weak var tableView: UITableView!
var originalCountriesList:[String] = Array()
override func viewDidLoad() {
super.viewDidLoad()
tableView.isHidden = true
for country in values {
originalCountriesList.append(country)
}
campo_para.delegate = self
tableView.delegate = self
tableView.dataSource = self
campo_para.addTarget(self, action: #selector(textFieldActive), for: UIControlEvents.touchDown)
campo_para.addTarget(self, action: #selector(searchRecords(_ :)), for: .editingChanged)
}
#objc func searchRecords(_ textField: UITextField) {
self.values.removeAll()
if textField.text?.count != 0 {
for country in originalCountriesList {
if let countryToSearch = textField.text{
let range = country.lowercased().range(of: countryToSearch, options: .caseInsensitive, range: nil, locale: nil)
if range != nil {
self.values.append(country)
}
}
}
} else {
for country in originalCountriesList {
values.append(country)
}
}
tableView.reloadData()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return values.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCell(withIdentifier: "cellx")
if cell == nil {
cell = UITableViewCell(style: .default, reuseIdentifier: "cellx")
}
cell?.textLabel?.text = values[indexPath.row]
return cell!
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
campo_para.text = values[indexPath.row]
tableView.isHidden = true //I need press twice for this. I want press only one
}
func textFieldActive() {
tableView.isHidden = false
}
}
Ideally, the user touches the textField, displays the tableView, chooses one of the values, and it close automatically the tableView. But this last one does not work well.
Any advice?

Answer 1

Details
xCode 8.3, Swift 3.1
Example to Detect Double tap and Single tap on TableViewCell
ViewController.swift
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.tableFooterView = UIView()
}
}
extension ViewController: UITableViewDataSource {
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 10
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "TableViewCell") as! TableViewCell
cell.label.text = "\(indexPath)"
cell.delegate = self
return cell
}
}
extension ViewController:TableViewCellDelegate {
func tableViewCell(singleTapActionDelegatedFrom cell: TableViewCell) {
let indexPath = tableView.indexPath(for: cell)
print("singleTap \(String(describing: indexPath)) ")
}
func tableViewCell(doubleTapActionDelegatedFrom cell: TableViewCell) {
let indexPath = tableView.indexPath(for: cell)
print("doubleTap \(String(describing: indexPath)) ")
//You can hide your textfield here
}
}
TableViewCell.swift
import UIKit
class TableViewCell: UITableViewCell {
#IBOutlet weak var label: UILabel!
private var tapCounter = 0
var delegate: TableViewCellDelegate?
override func awakeFromNib() {
super.awakeFromNib()
let tap = UITapGestureRecognizer(target: self, action: #selector(tapAction))
addGestureRecognizer(tap)
}
func tapAction() {
if tapCounter == 0 {
DispatchQueue.global(qos: .background).async {
usleep(250000)
if self.tapCounter > 1 {
self.doubleTapAction()
} else {
self.singleTapAction()
}
self.tapCounter = 0
}
}
tapCounter += 1
}
func singleTapAction() {
delegate?.tableViewCell(singleTapActionDelegatedFrom: self)
}
func doubleTapAction() {
delegate?.tableViewCell(doubleTapActionDelegatedFrom: self)
}
}
TableViewCellDelegate.swift
import UIKit
protocol TableViewCellDelegate {
func tableViewCell(singleTapActionDelegatedFrom cell: TableViewCell)
func tableViewCell(doubleTapActionDelegatedFrom cell: TableViewCell)
}
Result

Answer 2

Here I put my solution, in case someone else would happen something similar.
Just change the order of the lines and add one more line. First it makes it invisible and then puts the result in the textField and, magically, it worked!
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.isHidden = true
campo_para.text = NombreUsuario[indexPath.row]
campo_asunto.becomeFirstResponder()
}
Thanks!