F. Bar F. Bar - 1 year ago 89
iOS Question

Add a gestureRecognizer to a tableView cell

I currently have a TableViewController with 3 cells and I'm trying to add a long press gesture recogniser to just print to the logs when detected.

I've added:

class TableTesting: UITableViewController, UIGestureRecognizerDelegate {

and in my
method I've created a

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = "Gesture Recognizer Testing"
var lpgr = UILongPressGestureRecognizer(target: self, action: "longPressAction:")
lpgr.minimumPressDuration = 2.0
lpgr.delegate = self
return cell

I've also created the function

func longPressAction(gestureRecognizer: UILongPressGestureRecognizer) {
print("Gesture recognized")

The issue I'm having is when compiling the code and trying to long press one my cells, the app is crashing and I'm getting this error:

Terminating app due to uncaught exception
'NSInvalidArgumentException', reason: '-[TestingGround.TableTesting
longPressAction:]: unrecognized selector sent to instance

I'm guessing somehow that the correct information isn't being passed into the function but I'm unsure?

Any help would be appreciated.

Answer Source

Instead of:

var lpgr = UILongPressGestureRecognizer(target: self, action: "longPressAction:")


let lpgr = UILongPressGestureRecognizer(target: self, action: #selector(longPressAction(gestureRecognizer:)))
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