Swift handle action on segmented control

Question

I have a HMSegmentedControl with 4 segments. When it is selected, it should pop up view. And when the pop up dismissed, and trying to click on same segment index it should again show the pop up. By using following does not have any action on click of same segment index after pop up dissmissed.

segmetedControl.addTarget(self, action: "segmentedControlValueChanged:", forControlEvents: UIControlEvents.ValueChanged)

consider this instead http://stackoverflow.com/questions/1620972/uisegmentedcontrol-register-taps-on-selected-segment — Gerald, Apr 09 '16 at 03:22

score 63 · Answer 1 · edited Jul 31 '21 at 04:40

You can add the same target for multiple events.

So lets say your segmentedControlValueChanged: looks like this:

@objc func segmentedControlValueChanged(_ sender: UISegmentedControl) {
    if sender.selectedSegmentIndex == 0 {
        // value for first index selected here
    }
}

Then you can add targets for more than 1 events to call this function:

segmentedControl.addTarget(self, action: #selector(segmentedControlValueChanged(_:)), for: .valueChanged)
segmentedControl.addTarget(self, action: #selector(segmentedControlValueChanged(_:)), for: .touchUpInside)

Now your function will get called when a value was changed and when the user releases his finger.

This does not seem to work with Xcode 14 – RawMean Dec 25 '22 at 00:35 — RawMean, Dec 25 '22 at 00:35

LF00 · Answer 2 · 2019-04-25T00:27:19.200

20

with sender, use the sender name sender when you want to access in the action:

segmentControl.addTarget(self, action: #selector(changeWebView(sender:)), for: .valueChanged)

or

addTarget(self, action: #selector(changeWebView), for: .valueChanged)

edited Apr 25 '19 at 00:27

answered Feb 27 '17 at 02:38

LF00

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score 19 · Answer 3 · edited Oct 10 '19 at 16:33

Swift 5

// add viewController

@IBOutlet var segmentedControl: UISegmentedControl!

override func viewDidLoad() {
    super.viewDidLoad()
    segmentedControl.addTarget(self, action: #selector(CommentsViewController.indexChanged(_:)), for: .valueChanged)
}

// using change

@objc func indexChanged(_ sender: UISegmentedControl) {
    if segmentedControl.selectedSegmentIndex == 0 {
        print("Select 0")
    } else if segmentedControl.selectedSegmentIndex == 1 {
        print("Select 1")
    } else if segmentedControl.selectedSegmentIndex == 2 {
        print("Select 2")
    }
}

score 15 · Accepted Answer · edited Feb 28 '21 at 06:07

15

You set your target to fire just when the value change, so if you select the same segment the value will not change and the popover will not display, try to change the event to TouchUpInside, so it will be fired every time you touch inside the segment

segmentedControl.addTarget(self, action: #selector(segmentedControlValueChanged(_:)), for: .touchUpInside)

edited Feb 28 '21 at 06:07

Ethan Allen

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answered May 30 '15 at 10:59

Icaro

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7

I already tried this by using TouchUpInside event. But it is not working. No event happens while using it. – TechSavy May 30 '15 at 11:02
2

did you try .AllEvents as well? – Icaro May 30 '15 at 11:03
Nice, glad I could help – Icaro May 30 '15 at 11:08
1

I tried both `.TouchUpInside` and `.AllEvents` and they do not work. see this instead http://stackoverflow.com/questions/1620972/uisegmentedcontrol-register-taps-on-selected-segment. I don't know why the OP accepted this answer – Gerald Apr 09 '16 at 03:24
10

`.valueChanged` Event will work for UISegmentControl. – ranjit.x.singh Apr 08 '17 at 08:53
`.allEvents` will be called more times, so that could be expensive – anitteb Mar 13 '18 at 09:59
@ranjit.x.singh but if long press and select from dropdown, value changed is not called – Nov 04 '19 at 07:47

score 4 · Answer 5 · edited Apr 24 '19 at 06:59

4

@IBAction func segmentedControlButtonClickAction(_ sender: UISegmentedControl) {
   if sender.selectedSegmentIndex == 0 {
      print("First Segment Select")
   }
   else { 
      print("Second Segment Select")
   }
}

edited Apr 24 '19 at 06:59

Hardik Thakkar

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answered Sep 21 '18 at 07:07

Dnyaneshwar Shinde

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score 2 · Answer 6 · answered Apr 26 '18 at 19:35

2

Swift4 syntax :

segmentedControl.addTarget(self, action: "segmentedControlValueChanged:", for:.touchUpInside)

answered Apr 26 '18 at 19:35

Arunabh Das

13,212
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score 0 · Answer 7 · answered Sep 22 '20 at 12:55

0

Drag and drop create an action which is a value type.

@IBAction func actionSegment(_ sender: Any) {
    let segemnt = sender as! UISegmentedControl
    print(segemnt.selectedSegmentIndex)// 0 , 1

}

answered Sep 22 '20 at 12:55

Shourob Datta

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Swift handle action on segmented control

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