How to detect tableView cell touched or clicked in swift
I'm trying to get index of selected item in TableView and start some activity after that. Unfortunately most of solutions that I found are in objective-c or do not work.
Method func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) don't print the cell label..
Can somebody help me please?
import UIKit
import ResearchKit
class TaskListViewController: UIViewController, UITableViewDataSource {
let tasks=[("Short walk"),
("Audiometry"),
("Finger tapping"),
("Reaction time"),
("Spatial span memory")
]
//how many sections are in your table
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
//return int how many rows
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return tasks.count
}
//what are the contents
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell = UITableViewCell()
var (testName) = tasks[indexPath.row]
cell.textLabel?.text=testName
return cell
}
// give each table section a name
func tableView(tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return "Tasks"
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let indexPath = tableView.indexPathForSelectedRow();
let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as UITableViewCell!
println(currentCell.textLabel!.text)
}
override func viewDidLoad() {
super.viewDidLoad()
}
}
After a few tries I changed the code to a different one from tutorial that I found. And it doesn't work too. Now I'm thinking this is the issue with iOS simulator...
import UIKit
import ResearchKit
class TaskListViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
@IBOutlet
var tableView: UITableView?
var items: [String] = ["We", "Heart", "Swift"]
override func viewDidLoad() {
super.viewDidLoad()
self.tableView!.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cell")
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.items.count;
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
var cell:UITableViewCell = self.tableView!.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
cell.textLabel?.text = self.items[indexPath.row]
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
println("You selected cell #(items[indexPath.row])!")
}
}
If you want the value from cell then you don't have to recreate cell in the didSelectRowAtIndexPath
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
println(tasks[indexPath.row])
}
Task would be as follows :
let tasks=["Short walk",
"Audiometry",
"Finger tapping",
"Reaction time",
"Spatial span memory"
]
also you have to check the cellForRowAtIndexPath you have to set identifier.
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("CellIdentifier", forIndexPath: indexPath) as UITableViewCell
var (testName) = tasks[indexPath.row]
cell.textLabel?.text=testName
return cell
}
Hope it helps.
In Swift 3.0
You can find the event for the touch/click of the cell of tableview through it delegate method. As well, can find the section and row value of the cell like this.
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("section: (indexPath.section)")
print("row: (indexPath.row)")
}
Problem was solved by myself using tutorial of weheartswift
上一篇: 在UIView框架内绘制圆圈