Calling button actions in segmented control

Question

I have a segmented control action method with two segments

@IBAction func segmentChanged(_ sender: UISegmentedControl) { 

    // What goes here for displaying data similar to buttonsTapped? 
}

I have three buttons as follows

 @IBOutlet weak var buttonOne: UIButton!
 @IBOutlet weak var buttonTwo: UIButton!
 @IBOutlet weak var buttonThree: UIButton!

I have an action method for all 3 buttons,

 @IBAction func buttonsTapped(_ sender: UIButton) { 

    switch sender {
    case buttonOne:
     print("Button one Tapped")
    case buttonTwo:
     print("Button two tapped")
    case buttonThree:
     print("Button three tapped")
    default: break
    }

  if segmentedControl.selectedSegmentIndex == 0
        {
            print("First Segment")
        }
        else
        {
            print("Second Segment")
        }
  }

When I tap on buttonOne, I am getting "First Segment" and "Button One Tapped" as it is in the first segment. Similarly, buttonTwo and buttonThree, are displaying correct messages on the console.

But when I am changing the segmented control, I am not getting any messages on the console. I tried by calling buttonOne.sendActions(for: .touchUpInside) in segmentChanged method and it works only for buttonOne and messes up others. How do I get proper messages for all buttons and segments when the segment is changed? Thanks in advance.

Answer 1

You need to set your UISegmentedControl method for .valueChange not for .touchUpInside.

Looks following:

and add following method.

Code:

@IBOutlet weak var buttonOne            : UIButton!
@IBOutlet weak var buttonTwo            : UIButton!
@IBOutlet weak var buttonThree          : UIButton!
@IBOutlet weak var segmentedControl     : UISegmentedControl!

var selectedButton                      : UIButton!

@IBAction func buttonsTapped(_ sender: UIButton) {

    selectedButton = sender

    switch sender {

    case buttonOne:
        print("Button one Tapped")

    case buttonTwo:
        print("Button two tapped")

    case buttonThree:
        print("Button three tapped")

    default: break
    }

    if self.segmentedControl.selectedSegmentIndex == 0 {
        print("First Segment")
    } else {
        print("Second Segment")
    }
}


@IBAction func segmentChanged(_ sender: UISegmentedControl) {
    if sender.selectedSegmentIndex == 0
    {
        self.selectedButton.sendActions(for: .touchUpInside)
    }
    else
    {
        self.selectedButton.sendActions(for: .touchUpInside)
    }
}