ios - UIButton Click Event not working if I add UITapGestureRecognizer in swift

Question

On my login page, if I focus to UITextEdit for entering email and password, keyboard appears and login page scroll up. And I add this code for remove keyboard if I touch outside of keyboard.

extension UIViewController {
    func hideKeyboardWhenTappedAround() {
        let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(UIViewController.dismissKeyboard))
        tap.cancelsTouchesInView = false
        view.addGestureRecognizer(tap)
    }
    
    @objc func dismissKeyboard() {
        view.endEditing(true)
        UIView.animate(withDuration: 0.3, animations: {
            self.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
        })
    }
}

And on my viewDidLoad() function, I added it like this.

override func viewDidLoad() 
{
        super.viewDidLoad()
        //TODO
        self.hideKeyboardWhenTappedAround()
       ...
}

It works well, But If I click login button when keyboard is still opening, dismisskeyboard() function works but btnClick function doesn't work.

@IBAction func LoginBtnClick(_ sender: Any) 
{
        print("loginBtn")
        //...
}

How can I solve this problem?

Answer 1

I actually solved it a little different way (I had the same problem on my login screen). I just moved the dismissing/animating of the keyboard into an async block with a tiny delay, because it seemed like with the tap recognizer, it was picking up the touch down, but not the touch up inside the button, likely because the screen had already started to animate the dismissal of the keyboard.

@objc func dismissKeyboard() {
    DispatchQueue.main.asyncAfter(deadline: .now() + .milliseconds(100)) {
        self.view.endEditing(true)
        UIView.animate(withDuration: 0.3, animations: {
            self.view.frame = CGRect(x: 0, y: 0, width: self.view.frame.width, height: self.view.frame.height)
        })
    }
}