[iOS UIKit in Swift 4] UISwitch 사용하기

UISwitch 사용하기

아래 이미지와 소스코드를 비교해보시면 좀 더 이해하기 편합니다.

궁금하신점은 댓글로 달아주세요.

해피코딩 :)

Preview

Source

	//
	// SwitchVC.swift
	// UIKit component handling
	//
	// Created by Taehyeon Han on 2018. 8. 9..
	// Copyright © 2018년 calmone. All rights reserved.
	//
	import UIKit
	class SwitchVC: BaseViewController {
	lazy var label: UILabel = {
	// Create a label to display On / Off.
	let label = UILabel(frame: CGRect(x: 0, y: 0, width: 150, height: 150))
	label.backgroundColor = UIColor.gray
	label.layer.masksToBounds = true
	label.layer.cornerRadius = 75.0
	label.textColor = UIColor.white
	label.shadowColor = UIColor.gray
	label.font = UIFont.systemFont(ofSize: 30.0)
	label.textAlignment = NSTextAlignment.center
	label.layer.position = CGPoint(x: self.view.bounds.width/2,y: 200)
	label.text = "On"
	return label
	}()
	lazy var controlSwitch: UISwitch = {
	// Create a Switch.
	let swicth: UISwitch = UISwitch()
	swicth.layer.position = CGPoint(x: self.view.frame.width/2, y: self.view.frame.height - 200)
	// Display the border of Swicth.
	swicth.tintColor = UIColor.orange
	// Set Switch to On.
	swicth.isOn = true
	// Set the event to be called when switching On / Off of Switch.
	swicth.addTarget(self, action: #selector(onClickSwitch(sender:)), for: UIControlEvents.valueChanged)
	return swicth
	}()
	override func viewDidLoad() {
	super.viewDidLoad()
	// Do any additional setup after loading the view.
	// Add UILabel on view
	self.view.addSubview(self.label)
	// Add UISwitch on view
	self.view.addSubview(self.controlSwitch)
	}
	override func didReceiveMemoryWarning() {
	super.didReceiveMemoryWarning()
	// Dispose of any resources that can be recreated.
	}
	@objc func onClickSwitch(sender: UISwitch) {
	var text: String!
	var color: UIColor!
	if sender.isOn {
	text = "On"
	color = UIColor.gray
	} else {
	text = "Off"
	color = UIColor.orange
	}
	self.label.text = text
	self.label.backgroundColor = color
	}
	}

view raw SwitchVC.swift hosted with ❤ by GitHub

Github

https://github.com/calmone/iOS-UIKit-component

Reference

• UISwitch 
  https://developer.apple.com/reference/uikit/uiswitch