Get button pressed id on Swift via sender

Question

So I have a storyboard with 3 buttons I want to just create 1 action for all those 3 buttons and decide what to do based on their label/id...

Is there a way to get s

Answer 1

Swift 4 - 5.1

@IBAction func buttonPressed(_ sender: UIButton) {
        if sender.tag == 1 {
            print("Button 1 is pressed")
        }
}

Answer 2

In this case you can use NSObject extension Accessibility Element UIAccessibility.

I have used accessibilityLabel and accessibilityIdentifier both are success in call and condition checking.

First You can set a Accessibility Label or Identifier in the storyboard for each of the buttons in Identity inspector. Accessibility should be enabled.

To check/Identify button by

@IBAction func selectionPicker(_ sender: UIButton){
        if sender.accessibilityLabel == "childType"{ //Check by accessibilityLabel
            print("Child Type")
        }
        if sender.accessibilityIdentifier == "roomType"{ //Check by accessibilityIdentifier
            print("Room Type")
        }
        performSegue(withIdentifier: "selectionViewSegue", sender:sender)
    }

On Swift 3.2 and 4.0 with Xcode 9.0

Answer 3

Swift 3 Code: In xcode Please set tag for each button first to work following code.

@IBAction func threeButtonsAction(_ sender: UIButton) {

        switch sender.tag {
        case 1:
            print("do something when first button is tapped")
            break
        case 2:
            print("do something when second button is tapped")
            break
        case 3:
            print("do something when third button is tapped")
            break
        default:
            break
        }
    }

Answer 4

Use the outlets instead, tags clutter the code and make the readability way worse. Think about the poor developer that reads the code next and sees if sender.tag = 381 { // do some magic }, it just won't make any sense.

My example:

class PhoneNumberCell: UITableViewCell {
  @IBOutlet weak var callButton: UIButton!
  @IBOutlet weak var messageButton: UIButton!

  @IBAction func didSelectAction(_ sender: UIButton) {
    if sender == callButton {
      debugPrint("Call person")
    } else if sender == messageButton {
      debugPrint("Message person")
    }
  }

  [...]
}

You could also do this in a nice switch as well, which would make it even better.

Tested on Swift 5.1

Answer 5

Given the case you labeled your buttons "1", "2", "3":

@IBAction func mainButton(sender: UIButton) {
    switch sender.titleLabel?.text {
        case "1":
            print("do something when first button is tapped")
        case "2":
            print("do something when second button is tapped")
        case "3":
            print("do something when third button is tapped")
        default:
            () // empty statement or "do nothing"
    }
}

Answer 6

I'm not a fan of any of the above:

switch sender as! NSObject {
case self.buttoneOne:
    println("do something when first button is tapped")
case self.buttoneTwo:
    println("do something when second button is tapped")
default:
    println("default")

}