Use of string literal for Objective-C selectors is deprecated; use '#selector' instead

Question

I have the following code:

 override func viewDidLoad() {
            super.viewDidLoad()
            //Looks for single or multiple taps.
            let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "dismissKeyboard")
            view.addGestureRecognizer(tap)
            // Do any additional setup after loading the view.
        }

func dismissKeyboard() {
    //Causes the view (or one of its embedded text fields) to resign the first responder status.
    view.endEditing(true)
}

When running the application This error occurs when the work of error repair another mistake happens

Daniel Ormeño · Answer 1 · 2016-06-09T23:45:07.740

3

You are getting this error due to the updates to the swift language, change your tap selector for this:

let tap = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard))

Make sure that the method dismissKeyboard is in the same view controller, if its not you'll need to do #selector(WhateverHasThatMethod.dismissKeyboard)

Also, make sure that the dismissKeyboard method actually exists, it should be something along the lines of:

func dismissKeyboard(){
    YourInputField.endEditing(true)
}

edited Jun 09 '16 at 23:45

answered Jun 09 '16 at 23:31

Daniel Ormeño

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not working i get breakpoint error ! – kvra13 Jun 09 '16 at 23:39
self Posting.LoginViewController 0x00000001556537c0 tap UITapGestureRecognizer 0x00000001556537c0 UIKit.UIGestureRecognizer UIGestureRecognizer – kvra13 Jun 09 '16 at 23:44
I have updated my answer to your question with a bit more information, I think you might be missing the method that actually hides your keyboards. – Daniel Ormeño Jun 09 '16 at 23:44
thnx for your help but i get same error ! – kvra13 Jun 09 '16 at 23:57
i have update my question with my function – kvra13 Jun 10 '16 at 00:00
I see, you are doing view.endEditing(true), your error is that view is not an input field. You should have an outlet to whatever it is that is showing your keyboard, for example, if you are using a text input and you linked it to your view controller with @IBOutlet weak var EmailAddressInputField: UITextField!, you should call EmailAddressInputField.endEditing(true) – Daniel Ormeño Jun 10 '16 at 00:02
thnx for your help ! – kvra13 Jun 10 '16 at 01:51
No problem! happy to help. – Daniel Ormeño Jun 10 '16 at 01:52

score 0 · Answer 2 · answered Jun 09 '16 at 23:31

0

    let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard))

answered Jun 09 '16 at 23:31

guidev

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score 0 · Answer 3 · answered Jun 09 '16 at 23:31

0

Since Swift 2.2, use this instead: #selector(YourClass.dismissKeyboard)

answered Jun 09 '16 at 23:31

Lumialxk

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score 0 · Answer 4 · answered Jun 10 '16 at 12:06

Apart from #selector, you can also see some of the new changes in Swift 2.2 from below link:

https://swift.org/blog/swift-2-2-new-features/

will not work in Swift 2.2 but okay in Swift 2.1

override func viewDidLoad() {
    super.viewDidLoad()

    navigationItem.rightBarButtonItem =
        UIBarButtonItem(barButtonSystemItem: .Add, target: self,
                        action: "addNewFireflyRefernce")
}

func addNewFireflyReference() {
    gratuitousReferences.append("We should start dealing in black-market beagles.")
}

will work in Swift 2.2 and higher version

override func viewDidLoad() {
    super.viewDidLoad()

    navigationItem.rightBarButtonItem =
        UIBarButtonItem(barButtonSystemItem: .Add, target: self,
                        action: #selector(addNewFireflyRefernce))
}

func addNewFireflyReference() {
    gratuitousReferences.append("Curse your sudden but inevitable betrayal!")
}

Also Swift 3.0 is coming soon:

https://swift.org/blog/swift-3-0-release-process/

Use of string literal for Objective-C selectors is deprecated; use '#selector' instead

4 Answers4