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.

How to use

[1] Place parts

スクリーンショット 2020-10-28 22.47.26.png スクリーンショット 2020-10-28 22.50.04.png

[2] Edit parts

名称未設定2.001.jpeg 名称未設定2.002.jpeg
Completed form
スクリーンショット 2020-10-28 22.51.44.png

[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. 名称未設定2.001.jpeg 名称未設定2.002.jpeg 名称未設定2.003.jpeg

⚠️ 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 **. 名称未設定2.004.jpeg

Completed GIF

ezgif.com-gif-maker.gif

Sample project

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

Thank you for watching until the end ☺︎

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