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AddGestureRecognizer not working for UILabel in tableViewCell

I am trying to add tap event in UILabel inside tableView cell as below.

UILabel

tableView

let tap = UITapGestureRecognizer(target: self, action: #selector(downloadFile(_:)))
let msgLabel = cell.viewWithTag(1000) as! UILabel
msgLabel.isUserInteractionEnabled = true
msgLabel.addGestureRecognizer(tap)


This is my downloadFile function.

downloadFile

@objc func downloadFile(_ sender:Any)
print("tapped")



Can anyone solve this problem for me.

3 Answers
3

tap.delegate =self;
tap.numberOfTapsRequired = 1;


Add the above code to UITapGestureRecognizer object. That will make it :

UITapGestureRecognizer

let tap = UITapGestureRecognizer(target: self, action: #selector(downloadFile(_:)))
tap.delegate =self;
tap.numberOfTapsRequired = 1;
let msgLabel = cell.viewWithTag(1000) as! UILabel
msgLabel.isUserInteractionEnabled = true
msgLabel.addGestureRecognizer(tap)


I propose an alternative by subclassing UITableViewCell. Then you create your downloadFile method inside your custom TableView Cell.

Don't forget to replace self with cell in tapGesture target:

self

cell

let tap = UITapGestureRecognizer(target: cell, action: #selector(cell.downloadFile(_:)))


I will explain more further...

First Step: Create custom cell

import UIKit

class TableViewCell: UITableViewCell

@objc func downloadFile()
print("download")


override func awakeFromNib()
super.awakeFromNib()



override func setSelected(_ selected: Bool, animated: Bool)
super.setSelected(selected, animated: animated)

// Configure the view for the selected state




Second Step: Typecast your UITableViewCell in your tableView datasource (cellForRowAt)

let cell = tableView.dequeueReusableCell(withIdentifier: "Cell") as! CustomTableViewCell

let tap = UITapGestureRecognizer(target: cell, action: #selector(cell.downloadFile(_:)))


Make the gesture recognizer in your UITableViewCell subclass.

class CustomTableViewCell: UITableViewCell

var exampleLabel: UILabel!

override func awakeFromNib()
super.awakeFromNib()


func initViews()

let gesture = UITapGestureRecognizer.init(target: self, action: #selector(labelTapped))
exampleLabel.addGestureRecognizer(gesture)
print(exampleLabel.frame)


@objc func labelTapped()
print("Do something here")




The above code would require you to have a cell of type CustomTableViewCell registered in your UITableView from your storyboard. If you are not using storyboard, please change the code accordingly and maybe add the initView method to didMoveToWindow override.

In your controller class, the protocol overrides should follow something of this sort:

extension HomeController: UITableViewDelegate,UITableViewDataSource
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
return 30


func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell = tableView.dequeueReusableCell(withIdentifier: "SomeIdentifierString", for: indexPath) as! CustomTableViewCell
return cell




Irrelevant to the actual question, but I would like to add that if you are not using storyboard, add the following line to register the UITableViewCell subclass:

let exampleTable = UITableView.init(frame: self.view.frame, style: .plain)
self.view.addSubview(exampleTable)
exampleTable.register(CustomTableViewCell.self, forCellReuseIdentifier: "SomeIdentifierString")


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