CODEWITHSUNDEEP
iosipaduilabel
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Happy

Reputation: 1023

How to get UILabel to respond to tap?

I have discovered that I can create UILabel much faster than UITextField and I plan to use UILabel most of the time for my data display app.

To make a long story short though, I wish to let the user tap on a UILabel and have my callback respond to that. Is that possible?

Thanks.

Upvotes: 102

Views: 78238

Answers (12)

Prashant Gaikwad
Prashant Gaikwad

Reputation: 3810

This works great in Xcode 12 and Swift 5

let tapAction = UITapGestureRecognizer(target: self,action:#selector(actionTapped(_:)))

userLabel?.isUserInteractionEnabled = true

userLabel?.addGestureRecognizer(tapAction)

And action method like -

@objc func actionTapped(_ sender: UITapGestureRecognizer) {
        print("tapped")
    }

Upvotes: 2

Nathan F.
Nathan F.

Reputation: 3479

I personally prefer the method of writing an extension for UILabel. This is what I use.

import UIKit

extension UILabel {
    /**
     * A map of actions, mapped as [ instanceIdentifier : action ].
     */
    private static var _tapHandlers = [String:(()->Void)]()

    /**
     * Retrieve the address for this UILabel as a String.
     */
    private func getAddressAsString() -> String {
        let addr = Unmanaged.passUnretained(self).toOpaque()
        return "\(addr)"
    }

    /**
     * Set the on tapped event for the label
     */
    func setOnTapped(_ handler: @escaping (()->Void)) {
        UILabel._tapHandlers[getAddressAsString()] = handler
        let gr = UITapGestureRecognizer(target: self, action: #selector(onTapped))
        gr.numberOfTapsRequired = 1
        self.addGestureRecognizer(gr)
        self.isUserInteractionEnabled = true
    }

    /**
     * Handle the tap event.
     */
    @objc private func onTapped() {
        UILabel._tapHandlers[self.getAddressAsString()]?()
    }
}

You would then use it like this from any UILabel instance:

myLabel.setOnTapped {
    // do something
}

This can potentially cause some memory leaks I believe, but I haven't determined how best to resolve them yet.

Upvotes: 0

Koushik
Koushik

Reputation: 1250

Swift 3.0

Initialize the gesture for tempLabel

tempLabel?.text = "Label"
let tapAction = UITapGestureRecognizer(target: self, action: #selector(self.actionTapped(_:)))
tempLabel?.isUserInteractionEnabled = true
tempLabel?.addGestureRecognizer(tapAction)

Action receiver 

func actionTapped(_ sender: UITapGestureRecognizer) {
    // code here
}

Swift 4.0

Initialize the gesture for tempLabel

tempLabel?.text = "Label"
let tapAction = UITapGestureRecognizer(target: self, action:@selector(actionTapped(_:)))
tempLabel?.isUserInteractionEnabled = true
tempLabel?.addGestureRecognizer(tapAction)

Action receiver 

func actionTapped(_ sender: UITapGestureRecognizer) {
    // code here
}

Upvotes: 20

Aditya Jha
Aditya Jha

Reputation: 55

Swift Version: var tapGesture : UITapGestureRecognizer = UITapGestureRecognizer()

Then inside viewDidLoad(),add this:

  let yourLbl=UILabel(frame: CGRectMake(x,y,width,height)) as UILabel!

    yourLbl.text = "SignUp"
    tapGesture.numberOfTapsRequired = 1
    yourLbl.addGestureRecognizer(tapGesture)
    yourLbl.userInteractionEnabled = true
    tapGesture.addTarget(self, action: "yourLblTapped:")

Upvotes: 2

MRustamzade
MRustamzade

Reputation: 1455

Swift 3 from Alvin George

override func viewDidLoad() {
    super.viewDidLoad()
    let newsString: NSMutableAttributedString = NSMutableAttributedString(string: "Tap here to read the latest Football News.")
    newsString.addAttributes([NSUnderlineStyleAttributeName: NSUnderlineStyle.styleDouble.rawValue], range: NSMakeRange(4, 4))
    sampleLabel.attributedText = newsString.copy() as? NSAttributedString

    let tapGesture: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(ViewController.tapResponse))
    tapGesture.numberOfTapsRequired = 1
    sampleLabel.isUserInteractionEnabled =  true
    sampleLabel.addGestureRecognizer(tapGesture)
}

func tapResponse(recognizer: UITapGestureRecognizer) {
    print("tap")
}

Upvotes: 1

Alvin George
Alvin George

Reputation: 14294

Swift 2.0:

I am adding a nsmutable string as sampleLabel's text, enabling user interaction, adding a tap gesture and trigger a method.

override func viewDidLoad() {
    super.viewDidLoad()

    let newsString: NSMutableAttributedString = NSMutableAttributedString(string: "Tap here to read the latest Football News.")
    newsString.addAttributes([NSUnderlineStyleAttributeName: NSUnderlineStyle.StyleDouble.rawValue], range: NSMakeRange(4, 4))
    sampleLabel.attributedText = newsString.copy() as? NSAttributedString

    let tapGesture: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "tapResponse:")
    tapGesture.numberOfTapsRequired = 1
    sampleLabel.userInteractionEnabled =  true
    sampleLabel.addGestureRecognizer(tapGesture)

}
func tapResponse(recognizer: UITapGestureRecognizer) {
    print("tap")
}

Upvotes: 8

LeoGalante
LeoGalante

Reputation: 737

Swift version looks like this:

func addGestureRecognizerLabel(){
    //Create a instance, in this case I used UITapGestureRecognizer,
    //in the docs you can see all kinds of gestures
    let gestureRecognizer = UITapGestureRecognizer()

    //Gesture configuration
    gestureRecognizer.numberOfTapsRequired = 1
    gestureRecognizer.numberOfTouchesRequired = 1
    /*Add the target (You can use UITapGestureRecognizer's init() for this)
    This method receives two arguments, a target(in this case is my ViewController) 
    and the callback, or function that you want to invoke when the user tap it view)*/
    gestureRecognizer.addTarget(self, action: "showDatePicker")

    //Add this gesture to your view, and "turn on" user interaction
    dateLabel.addGestureRecognizer(gestureRecognizer)
    dateLabel.userInteractionEnabled = true
}

//How you can see, this function is my "callback"
func showDatePicker(){
    //Your code here
    print("Hi, was clicked")
}

//To end just invoke to addGestureRecognizerLabel() when
//your viewDidLoad() method is called

override func viewDidLoad() {
    super.viewDidLoad()
    addGestureRecognizerLabel()
}

Upvotes: 0

Hardik Thakkar
Hardik Thakkar

Reputation: 15971

To add Tap gesture on UILable

UITapGestureRecognizer *tapAction = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(lblClick:)];
tapAction.delegate =self;
tapAction.numberOfTapsRequired = 1;

//Enable the lable UserIntraction
lblAction.userInteractionEnabled = YES;
[lblAction addGestureRecognizer:tapAction];

and to assess the selector method

- (void)lblClick:(UITapGestureRecognizer *)tapGesture {

}

Note: Add UIGestureRecognizerDelegate in .h file

Upvotes: 4

Chandramani
Chandramani

Reputation: 889

If you want to use Multi line text in your button then create a UILabel with Multiline text and add as a subview in to your button.

for eg:

yourLabel=[Uilabel alloc]init];
yourLabel.frame=yourButtom.Frame;//(frame size should be equal to your button's frame)
[yourButton addSubView:yourLabel]

Upvotes: 1

pythonquick
pythonquick

Reputation: 10869

You can add a UITapGestureRecognizer instance to your UILabel.

For example:

UITapGestureRecognizer *tapGestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(labelTapped)];
tapGestureRecognizer.numberOfTapsRequired = 1;
[myLabel addGestureRecognizer:tapGestureRecognizer];
myLabel.userInteractionEnabled = YES;

Upvotes: 220

leenyburger
leenyburger

Reputation: 1208

If you're using storyboards you can do this entire process in the storyboard with no additional code. Add a label to the storyboard, then add a tap gesture to the label. In the Utilities pane, make sure "User Interaction Enabled" is checked for the label. From the tap gesture (at the bottom of your view controller in the storyboard), ctrl+click and drag to your ViewController.h file and create an Action. Then implement the action in the ViewController.m file.

Upvotes: 39

Matt S.
Matt S.

Reputation: 13763

You could use a UIButton instead and set the text to what you want. The button doesn't have to look like a button if you don't want to

Upvotes: 4

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