How to add swipe gesture for uilabel inside tableview in ios swift?

I am trying to creating check list in a table view. Inside table view radio button and UILabel, here adding swipe gesture to UILabel. For single swipe of UILabel will show radio button or double swipe of UILabel will show dash line.

I have tried of adding gesture to UILabel inside table by using selector method, it print successfully but UILabel is not swiping.

Here is the code tried of swiping UILabel:

In viewDidLoad:

let gestureRec = UISwipeGestureRecognizer(target: self, action: #selector(didTap(sender:)))
    tableView.addGestureRecognizer(gestureRec)
    gestureRec.delegate = self as? UIGestureRecognizerDelegate

And created function called didTap:

     @objc func didTap(sender : UISwipeGestureRecognizer)
      {
      if sender.state == .ended {
        let location = sender.location(in: self.tableView)
        let indexPath = self.tableView.indexPathForRow(at: location)
        var cell = self.tableView.cellForRow(at: indexPath!) as! textCell
        print("swipe")
        cell.labelView.frame(forAlignmentRect: CGRect(x: 10, y: 8, width: 20, 
     height: 15))

    }
   }

3 answers

  • answered 2018-04-17 04:59 Nitish

    The first thing I noticed is that you are adding the gesture on UITableView and not UILabel. So you need to fix that first.
    Secondly, for a gesture to work correctly on a control, you must enable the user interaction property of that control, else it won't respond to the gesture. So :

    label.isUserInteractionEnabled = true  
    

    You can add the gesture as follows :

    let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(swipedToLeft))
    swipeLeft.direction = UISwipeGestureRecognizerDirection.Left
    label.addGestureRecognizer(swipeLeft)
    

  • answered 2018-04-17 04:59 Awais Fayyaz

    Try this code. Tested and working fine 100 %

    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
        cell.textLabel?.text = tableDataSource[indexPath.row]
        cell.textLabel?.isUserInteractionEnabled = true
        let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(self.labelSwipedLeft(sender:)))
        cell.textLabel?.addGestureRecognizer(swipeLeft)
        return cell
    
    @objc func labelSwipedLeft(sender: UITapGestureRecognizer) {
        print("labelSwipedLeft called")
      }
    

    See the output enter image description here


    Additional: If you want to detect which row's label was tapped, then assign a tag to the label in cellForRowAt like

    cell.textLabel?.tag = indexPath.row
    

    And get the row index in the function labelSwipedLeft using

    print("labelSwipedLeft called for row \(sender.view!.tag)")
    

  • answered 2018-04-17 04:59 Vaibhav Parmar

    I would suggest adding swipe gesture in cell class, rather than ViewController.

    func setupGestures() {
        let swipeLeft = UISwipeGestureRecognizer(target: self, action: #selector(handleLeftSwipe(_:)))
        swipeLeft.direction = UISwipeGestureRecognizerDirection.Left
        label.addGestureRecognizer(swipeLeft)
        label.isUserInteractionEnabled = true
    }
    
    @objc func handleLeftSwipe(_ recognizer: UISwipeGestureRecognizer) {
    
    }
    

    call setupGestures in awakeFromNib. Also if you want to drag the label, use pan gesture