how handle click cell in UITableViewController - ios

Question

I would like to handle click each cell in my controller but my log doesn't show anything !
class RightMenuController: UITableViewController {
let row_items = ["دسته بندی", "ثبت نام/ورود"]
override func viewDidLoad() {
navigationController?.navigationBar.isHidden = true
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return row_items.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "LabelCell", for: indexPath)
cell.textLabel?.text = row_items[indexPath.row]
return cell
}
/*
// Override to support conditional editing of the table view.
override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support editing the table view.
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
// Delete the row from the data source
tableView.deleteRows(at: [indexPath], with: .fade)
} else if editingStyle == .insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
override func tableView(_ tableView: UITableView, moveRowAt fromIndexPath: IndexPath, to: IndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
// Return false if you do not want the item to be re-orderable.
return true
}
*/
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
print(self.row_items[indexPath.row]) // not print anything
}
}

Answer 1

Try this instead of your didSelectRow-method:
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print(self.row_items[indexPath.row])
}

Answer 2

The "method signature" (function name) that you are using for the didSelect method is incorrect. What you have listed in your current implementation is the "Swift 2 Version". You might note the way that the argument labels are separated to make the functions a bit more readable like in tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath)
This same renaming style should be applied to didSelectRowAtIndexPath. Here is the full code you can use to test this out in a playground.
import UIKit
class RightMenuController: UITableViewController {
let row_items = ["دسته بندی", "ثبت نام/ورود"]
override func viewDidLoad() {
// We must register a cell manually since there is no storyboard
tableView.register(UITableViewCell.self, forCellReuseIdentifier: "LabelCell")
navigationController?.navigationBar.isHidden = true
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return row_items.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "LabelCell", for: indexPath)
cell.textLabel?.text = row_items[indexPath.row]
return cell
}
// Old Swift 2 method signature
//func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print(self.row_items[indexPath.row]) // not print anything
}
}
// Create the ViewController
let right = RightMenuController(style: .plain)
// Ask the Playground to show your ViewController in the Assistant (2 rings - Right side view)
import PlaygroundSupport
PlaygroundPage.current.liveView = right