CODEWITHSUNDEEP
iosswift3uigesturerecognizer
Fr0zt
Fr0zt

Reputation: 1255

Disable a longpress

How can I disable a longpress?

I have set a longpress in a viewcontroller and it's working ok but i'd like it to stop working after I press another button.

I can add a flag and set it to false after I press button B and than the long press stops workingm like this:

func longpress(gestureRecognizer: UIGestureRecognizer)  { 
   if flag = true { 
       // action 
   } 
}

But I think it's not the right way. SO, What's the right way to do this?

Upvotes: 1

Views: 3489

Answers (1)

Josh Homann
Josh Homann

Reputation: 16327

You need to look at the superclass of UILongPressGestureRecognizer, UIGestureRecognizer. It has a property isEnabled that can be used to turn off recognition and turn it back on again.

EDIT: add example code below per poster request

    import UIKit

    class ViewController: UIViewController{

        @IBOutlet weak var button: UIButton!
        private var longPressGestureRecognizer:UILongPressGestureRecognizer!

        override func viewDidLoad() {
            super.viewDidLoad()
            longPressGestureRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(longPress))
            longPressGestureRecognizer.minimumPressDuration = 1
            button.addGestureRecognizer(longPressGestureRecognizer)
        }

        @objc private func longPress (longPressGestureRecognizer: UILongPressGestureRecognizer) {
            if longPressGestureRecognizer.state == .began {
                print("long press began")
            }
        }

        @IBAction func tapDisableButton(_ sender: Any) {
            longPressGestureRecognizer.isEnabled = !longPressGestureRecognizer.isEnabled
            print("long press \(longPressGestureRecognizer.isEnabled ? "enabled" : "disabled")")
        }
    }

Upvotes: 4

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