[SWIFT] How to use Segmented Control and points to note

Premise

This is a memorandum of the parts that are prone to mistakes when using Segmented Control.

• In fact, I didn't notice this mistake and forgot to introduce Segmented Control. .. ..

How to use

[1] Place parts

[2] Edit parts

Completed form

[3] Coding

Declaration of each part

ViewController.swift

@IBOutlet weak var selectSegmentedControl: UISegmentedControl!

@IBOutlet weak var DisplayLabel: UILabel!

Add action

ViewController.swift

@IBAction func tappedSegmentedControl(_ sender: UISegmentedControl) {
  
}

Write the process with a switch statement in the action.

ViewConroller.swift

   switch sender.selectedSegmentIndex {
        case 0:
            print("Selected: iOS")
            self.DisplayLabel.text = "iOS"
        case 1:
            print("Selected: iPadOS")
            self.DisplayLabel.text = "iPadOS"
        case 2:
            print("Selected: watchOS")
            self.DisplayLabel.text = "watchOS"
        case 3:
            print("Selected: tvOS")
            self.DisplayLabel.text = "tvOS"
        case 4:
            print("Selected: macOS")
            self.DisplayLabel.text = "macOS"
        default:
            print("Selected: Not selected")
            self.DisplayLabel.text = "Unselected"
        }

Whole code

ViewConroller.swift

@IBOutlet weak var selectSegmentedControl: UISegmentedControl!
    
@IBOutlet weak var DisplayLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.DisplayLabel.text = "Unselected"
    }
    
@IBAction func tappedSegmentedControl(_ sender: UISegmentedControl) {
        switch sender.selectedSegmentIndex {
        case 0:
            print("Selected: iOS")
            self.DisplayLabel.text = "iOS"
        case 1:
            print("Selected: iPadOS")
            self.DisplayLabel.text = "iPadOS"
        case 2:
            print("Selected: watchOS")
            self.DisplayLabel.text = "watchOS"
        case 3:
            print("Selected: tvOS")
            self.DisplayLabel.text = "tvOS"
        case 4:
            print("Selected: macOS")
            self.DisplayLabel.text = "macOS"
        default:
            print("Selected: Not selected")
            self.DisplayLabel.text = "Unselected"
     }
}

[4] Association

Associate Outlet and Action.

⚠️ Attention point ⚠️

If you say "Because it's always Touch Up Inside" and associate it with Touch Up Inside **, it won't work! ** ** Let's firmly connect ** Value Changed and **.

Completed GIF

Sample project

https://github.com/rea-sna/SegmentedControl_Sample

Thank you for watching until the end ☺︎