CODEWITHSUNDEEP
iosswiftuibutton
user9683424
user9683424

Reputation:

Identify which button was pressed

How to identify which button was pressed. I have 3 button actions. Now I have another button which when pressed it will identify which button from the 3 was pressed. Because first you have to click from the 3 buttons. After clicking from the 3 buttons then you will click idenfifywhichpressed button and this button will identify or print which button from the 3 was pressed.

//this button will identify
@IBAction func idenfifywhichpressed(_ sender: UIButton) {
}

The 3 buttons

@IBAction func btn1(_ sender: UIButton) {
}
@IBAction func btn2(_ sender: UIButton) {
}
@IBAction func btn3(_ sender: UIButton) {
}

Upvotes: 0

Views: 6337

Answers (6)

Heikki Taavettila
Heikki Taavettila

Reputation: 23

I prefer this approach.

@IBOutlet weak var zeroPctButton: UIButton!
@IBOutlet weak var tenPctButton: UIButton!
@IBOutlet weak var twentyPctButton: UIButton!

@IBAction func tipChanged(_ sender: UIButton) {
    
    switch(sender) {
    case zeroPctButton:
        print("0%")
        break;
    case tenPctButton:
        print("10%")
        break;
    case twentyPctButton:
        print("20%")
        break;
    default:
        print(" - you fail - ")
        break;
    }

Upvotes: 2

Rpk
Rpk

Reputation: 11

This is helped for me (swift 5.0)

@IBAction func hardnessSelected(_ sender: UIButton) {
        print(sender.currentTitle) // <----------
    }
    

}

Upvotes: 1

Ashutos Sahoo
Ashutos Sahoo

Reputation: 82

I think you can take a variable like

var checkBtn: String?

inside 1st button change the variable value

checkBtn = "1"

inside 2nd button change the variable value 

checkBtn = "2"

inside 3rd button change the variable value 

checkBtn = "3"

@IBAction func idenfifywhichpressed(_ sender: UIButton) {

    // just print the value of CheckBtn

    print(checkBtn)

    //this will give you which btn pressed right

}

Upvotes: 0

T. Benjamin Larsen
T. Benjamin Larsen

Reputation: 6393

Small improvement on @prajnaranjan-das answer: casting to an enum immediately to clean up some cruft and remove the need to implement default in the switch...

enum ButtonTag: Int {
    case First
    case Second
    case Third
 }

func buttonTapped(_ sender: UIButton) {
    guard let knownSender = ButtonTag(rawValue: sender.tag) else { return }
    switch knownSender {
    case .First:
        print("do something when first button is tapped")
    case .Second:
        print("do something when second button is tapped")
    case .Third:
        print("do something when third button is tapped")
    }
}

Upvotes: 1

PPL
PPL

Reputation: 6565

Do something like this,

var index:Int = 0

Now do this, FYI, set button tags accordingly 1,2 and 3...

@IBAction func btn1(_ sender: UIButton) {
    index = sender.tag
}

@IBAction func btn2(_ sender: UIButton) {
    index = sender.tag
}

@IBAction func btn3(_ sender: UIButton) {
    index = sender.tag
}

now this,

@IBAction func idenfifywhichpressed(_ sender: UIButton) {
    if index == 1 {
        //Button 1 Pressed
    }else if index == 2 {
        //Button 2 Pressed
    } else if index == 3{
        //Button 3 Pressed
    }
}

FYI. You can use Switch statement as well in idenfifywhichpressed method.

Update. Do not create three methods for btn1, btn2 and btn3, just create one method and assign tag accordingly for simplicity.

Upvotes: 0

Prajnaranjan Das
Prajnaranjan Das

Reputation: 1428

Try something like this

Declare an enum

  enum SelectedButtonTag: Int {
     case First
     case Second
     case Third
  }

Button Action

Connect the three button actions to this method with different tag

   @IBAction func idenfifywhichpressed(sender: UIButton) {
        switch sender.tag {
        case SelectedButtonTag.First.rawValue:
            print("do something when first button is tapped")
        case SelectedButtonTag.Second.rawValue:
            print("do something when second button is tapped")
        case SelectedButtonTag.Third.rawValue:
            print("do something when third button is tapped")
        default:
            print("default")
        }
    }

Upvotes: 2

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