Define click event for UISegmentedControl

If I understand your question correctly, you simply have to implement a target-action method (supported by UIControl which is UISegmentedControl's parent class) for the constant UIControlEventValueChanged, exactly like in the example given in UISegmentControl's reference documentation.

i.e.

[segmentedControl addTarget:self                     action:@selector(action:)           forControlEvents:UIControlEventValueChanged];

used for a message with the following signature:

- (void)action:(id)sender

or

[segmentedControl addTarget:self                     action:@selector(action:forEvent:)           forControlEvents:UIControlEventValueChanged];

for

- (void)action:(id)sender forEvent:(UIEvent *)event

or

[segmentedControl addTarget:self                     action:@selector(action)           forControlEvents:UIControlEventValueChanged];

for the simplest method:

- (void)action

which are standard types of target-action selectors used in UIKit.

try this:

- (IBAction)segmentSwitch:(UISegmentedControl *)sender {      NSInteger selectedSegment = sender.selectedSegmentIndex;      if (selectedSegment == 0) {      }      else{      }    }

Simple version in swift updated

func loadControl(){     self.yourSegmentedControl.addTarget(self, action: #selector(segmentSelected(sender:)), forControlEvents: .valueChanged)}func segmentSelected(sender: UISegmentedControl){    let index = sender.selectedSegmentIndex    // Do what you want}