CODEWITHSUNDEEP
iosswiftuiviewuitapgesturerecognizer
Federica Benacquista
Federica Benacquista

Reputation: 843

SWIFT4: How to have two tap gestureRecognizers work together

NB: My gesture recognizers are not different and are in different viewControllers.

TLDR: How can I do to have both my tap gesture recognisers to work?

I have created a side menu from some container views and I added to it a gesture recognizer that allows me to dismiss it on tap. Then I created another ViewController where i have some textfields. Since I wanted the keyboard to dismiss on tap I even added a gesture recognizer that allows me to hide the keyboard whenever i tap the view. Now I noticed that having the gesture that hides the keyboard doesn't let my side menu hide on tap:

SIDE MENU VIEW CONTROLLER

  @IBOutlet weak var bigContainer: UIView!
  @IBOutlet weak var sideMenuConstraint: NSLayoutConstraint!

    var sideMenuOpen = false
    var gesture : UITapGestureRecognizer?


    override func viewDidLoad() {
        super.viewDidLoad()
        NotificationCenter.default.addObserver(self,
                                               selector: #selector(toggleSideMenu), name: NSNotification.Name("ToggleSideMenu"), object: nil)


       gesture = UITapGestureRecognizer(target: self, action: #selector(ContainerViewController.toggleSideMenu))


    }


    @objc func toggleSideMenu() {
        if sideMenuOpen {
            sideMenuOpen = false
            sideMenuConstraint.constant = -240
        self.bigContainer.removeGestureRecognizer(gesture!)
        } else {
            sideMenuOpen = true
           sideMenuConstraint.constant = 0
         self.bigContainer.addGestureRecognizer(gesture!)

        }
    }

MAIN VIEW VIEW CONTROLLER

@IBOutlet weak var textField: UITextField!
 @IBOutlet weak var menuOutlet: UIButton!
 override func viewDidLoad() {
        super.viewDidLoad()
  let endEditingTapGesture = UITapGestureRecognizer(target: view, action: #selector(UIView.endEditing(_:)))
        endEditingTapGesture.cancelsTouchesInView = false
        view.addGestureRecognizer(endEditingTapGesture)
}
 @IBAction func toggleSideMenu(_ sender: Any) {
        print("Toggle side menu")
        NotificationCenter.default.post(name: NSNotification.Name("ToggleSideMenu"), object: nil)

    }
}

I tried removing the tap gesture to hide the keyboard in my toggleSideMenu button but it didn't work.

Upvotes: 0

Views: 787

Answers (1)

Saurabh Jain
Saurabh Jain

Reputation: 1698

In your MAIN VIEW CONTROLLER Replace with below code:

    var endEditingTapGesture:UIGestureRecognizer!

override func viewDidLoad() {
    super.viewDidLoad()
    endEditingTapGesture = UITapGestureRecognizer(target: view, action: #selector(UIView.endEditing(_:)))
    endEditingTapGesture.cancelsTouchesInView = false


    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillHide(notication:)), name: UIResponder.keyboardWillHideNotification, object: nil) //Add keyboard notification
    NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow(notication:)), name: UIResponder.keyboardWillShowNotification, object: nil)
}
@IBAction func toggleSideMenu(_ sender: Any) {
    print("Toggle side menu")
    NotificationCenter.default.post(name: NSNotification.Name("ToggleSideMenu"), object: nil)

}

//Keyboard method
@objc func keyboardWillHide(notication:Notification) {
    view.removeGestureRecognizer(endEditingTapGesture)
}

@objc func keyboardWillShow(notication:Notification) {
    view.addGestureRecognizer(endEditingTapGesture)
}

Upvotes: 1

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