UISegmentControl

//

//  ViewController.swift

//  TestApp1

//

//  Created by Divakar Singh on 3/1/17.

//  Copyright (c) 2017 Divakar Singh. All rights reserved.

//

import UIKit

class ViewController: UIViewController {

    

    private let mySegLabel: UILabel = UILabel(frame: CGRectMake(0,0,150,150))

    

    override func viewDidLoad() {

        super.viewDidLoad()

        

        // make an array for labels on segmentedControl

        let myArray: NSArray = ["Red","Blue","Green"]

        

        // make SegmentedControl

        let mySegcon: UISegmentedControl = UISegmentedControl(items: myArray as [AnyObject])

        mySegcon.center = CGPoint(x: self.view.frame.width/2, y: 400)

        mySegcon.backgroundColor = UIColor.grayColor()

        mySegcon.tintColor = UIColor.whiteColor()

        

        // add an event for valueChanged.

        mySegcon.addTarget(self, action: "segconChanged:", forControlEvents: UIControlEvents.ValueChanged)

        

        // add the segmentedControl to the view

        self.view.addSubview(mySegcon)

        

        // make uilabel to change the color when the value of SegmentedControl is changed.

        mySegLabel.backgroundColor = UIColor.whiteColor()

        mySegLabel.layer.masksToBounds = true

        mySegLabel.textColor = UIColor.whiteColor()

        mySegLabel.shadowColor = UIColor.grayColor()

        mySegLabel.font = UIFont.systemFontOfSize(CGFloat(30))

        mySegLabel.textAlignment = NSTextAlignment.Center

        mySegLabel.layer.position = CGPoint(x: self.view.bounds.width/2,y: 200)

        

        self.view.backgroundColor = UIColor.blackColor()

        

        self.view.addSubview(mySegLabel);

    }

    

    // called when the value of SegmentedControl is changed.

    internal func segconChanged(segcon: UISegmentedControl){

        

        switch segcon.selectedSegmentIndex {

        case 0:

            mySegLabel.backgroundColor = UIColor.redColor()

            

        case 1:

            mySegLabel.backgroundColor = UIColor.blueColor()

            

        case 2:

            mySegLabel.backgroundColor = UIColor.greenColor()

            

        default:

            print("Error")

        }

    }

    

    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

    }

}