IOS - How to hide a view by touching anywhere outside of it

Question

I\'m new to IOS programming, I\'m displaying a view when a button is clicked, using the following code inside the button method.

 @IBAction func moreButton(_         


        

Answer 1

You can achieve what you want doing the following (tested with Swift 4.1 and Xcode 9.3):

class ViewController: UIViewController {

    ...

    private var dismissViewTap: UITapGestureRecognizer?

    override func viewDidLoad() {

        super.viewDidLoad()

        dismissViewTap = UITapGestureRecognizer(target: self, action: #selector(dismissView))

        if let tap = dismissViewTap {

            view.addGestureRecognizer(tap)

        } // if let

    } // viewDidLoad

    @objc private func dismissView() {

        guard let tap = dismissViewTap else {

            return

        } // guard

        guard helpView.isHidden == false else {

            return

        } // guard

        helpView.isHidden = true

        view.removeGestureRecognizer(tap)

    } // dismissView

    ...

} // ViewController

If you want to keep the gesture recognizer (maybe because you open helpView more than once) change dismissView to this version:

...

@objc private func dismissView() {

    guard helpView.isHidden == false else {

        return

    } // guard

    helpView.isHidden = true

} // dismissView

...

That's all...!