Set Gradient Tint Color for Segmented Control iOS Swift 4

As developers, we use a great color combination to produce a good-looking result when creating an app, to achieve the best user experience possible. Simple colors might not be good enough for some certain outcomes in certain UI. but gradient could become best to fit UI.

Here I have provided a guide for customizing UISegmentedControl with gradient colors.

	@IBOutlet weak var segmentView: UISegmentedControl!{
	didSet{
	self.updateGradientBackground()
	self.segmentView.setTitleTextAttributes([NSAttributedString.Key.foregroundColor:UIColor.white],for: UIControl.State.normal)
	self.segmentView.setTitleTextAttributes([NSAttributedString.Key.foregroundColor:UIColor.white],for: UIControl.State.selected)
	}
	}
	fileprivate func updateGradientBackground() {
	let sortedViews = segmentView.subviews.sorted( by: { $0.frame.origin.x < $1.frame.origin.x } )
	for (_, view) in sortedViews.enumerated() {
	let gradientImage = gradient(size: segmentView.frame.size, color: [UIColor.cyan,UIColor.blue])!
	view.backgroundColor = UIColor(patternImage: gradientImage)
	view.tintColor = UIColor.clear
	}
	}
	func gradient(size:CGSize,color:[UIColor]) -> UIImage?{
	//turn color into cgcolor
	let colors = color.map{ $0.cgColor}
	//begin graphics context
	UIGraphicsBeginImageContextWithOptions(size, true, 0.0)
	guard let context = UIGraphicsGetCurrentContext() else {
	return nil
	}
	// From now on, the context gets ended if any return happens
	defer {UIGraphicsEndImageContext()}
	//create core graphics context
	let locations:[CGFloat] = [0.0,1.0]
	guard let gredient = CGGradient.init(colorsSpace: CGColorSpaceCreateDeviceRGB(), colors: colors as NSArray as CFArray, locations: locations) else {
	return nil
	}
	//draw the gradient
	context.drawLinearGradient(gredient, start: CGPoint(x:0.0,y:size.height), end: CGPoint(x:size.width,y:size.height), options: [])
	// Generate the image (the defer takes care of closing the context)
	return UIGraphicsGetImageFromCurrentImageContext()
	}

view raw GredientUISegmentedControl.swift hosted with ❤ by GitHub

If this code was helpful, I would love to hear from you or If you have any questions please post your comments below.

Thank you!