UITapGestureRecognizer does not work with UIView animate

Question

I'm trying to call an action when I tap on a UIImage at the time of its animation. I've seen similar questions, but I could not apply these solutions to my case. Please help.

xcode 9.2 swift 4

import UIKit

class MyCalssViewController: UIViewController {

    @IBOutlet weak var myImageView: UIImageView!

    override func viewDidLoad() {
        super.viewDidLoad()

        // action by tap
        let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action:  #selector (self.actionUITapGestureRecognizer))
        myImageView.addGestureRecognizer(gestureSwift2AndHigher)

    }

    // action by tap
    @objc func actionUITapGestureRecognizer (){

        print("actionUITapGestureRecognizer - works!") // !!! THIS DOES NOT WORK !!!

    }

    // hide UIImage before appear
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)

        myImageView.center.y += view.bounds.height

    }

    // show UIImage after appear with animation
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        UIView.animate(withDuration: 10, animations: {
            self.myImageView.center.y -= self.view.bounds.height
        })
    }
}

check this https://stackoverflow.com/questions/37818440/update-views-frame-while-its-being-animated/37819789#37819789 — Reinier Melian, Dec 27 '17 at 20:40
"I've seen similar questions, but I could not apply these solutions" What are those solutions? — El Tomato, Dec 27 '17 at 23:17

score 1 · Answer 1 · answered Oct 17 '18 at 06:20

1

You need to pass in the option .allowUserInteraction like this:

UIView.animate(withDuration: 10, delay: 0, options: .allowUserInteraction, animations: {
    ...
})

answered Oct 17 '18 at 06:20

samwize

25,675
15
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score 0 · Answer 2 · answered Dec 27 '17 at 21:09

0

You just missed a line, enabling user interaction on the view.

override func viewDidLoad() {
    super.viewDidLoad()

    // action by tap
    let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action:  #selector (self.actionUITapGestureRecognizer))
    myImageView.isUserInteractionEnabled = true
    myImageView.addGestureRecognizer(gestureSwift2AndHigher)

}

answered Dec 27 '17 at 21:09

trndjc

11,654
3
38
51

thnx, but this line do not help – iOS Dev Dec 28 '17 at 07:25

score 0 · Answer 3 · answered Dec 28 '17 at 05:43

0

  let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.clickedImageView(_:)))
  myImageview.isUserInteractionEnabled = true
  myImageview.addGestureRecognizer(tapGesture)

// MARK: - Gesture Recognizer action

    func clickedImageView(_ sender: UITapGestureRecognizer) {
       // Write your action here.
    }

answered Dec 28 '17 at 05:43

Kathiresan Murugan

2,783
3
23
44

this part " _ sender: UITapGestureRecognizer " nothing to changed – iOS Dev Dec 28 '17 at 07:28
sender will pass the particular UITapGestureRecognizer for validation purpose – Kathiresan Murugan Dec 28 '17 at 07:29
i understand, but action by tap still don't work when ImageView animate – iOS Dev Dec 28 '17 at 07:32
Can you share animation function – Kathiresan Murugan Dec 28 '17 at 07:33
Please, look higher, i already do it in my question " // hide UIImage before appear override func viewWillAppear(_ animated: Bool) { super.viewWillAppear(animated) myImageView.center.y += view.bounds.height } // show UIImage after appear with animation override func viewDidAppear(_ animated: Bool) { super.viewDidAppear(animated) UIView.animate(withDuration: 10, animations: { self.myImageView.center.y -= self.view.bounds.height }) } " – iOS Dev Dec 28 '17 at 07:37
I think your View was uppending above imageview. for testing purpose hide the view and check once. – Kathiresan Murugan Dec 28 '17 at 07:41
sorry, but I'm not sure, that understand you – iOS Dev Dec 28 '17 at 07:45
Ya bro, I understood. I have a doubt while animation that view is coming above view. Check the Stack of the Imageview & View position – Kathiresan Murugan Dec 28 '17 at 07:47

UITapGestureRecognizer does not work with UIView animate

3 Answers3