Tree structure with swift 3

https://www.codeproject.com/Tips/1101832/Tree-View-in-Swift-For-iOS

Longpress event in swift 3

override func viewDidLoad() {

        super.viewDidLoad() 

var longPressGesture : UILongPressGestureRecognizer!

 longPressGesture = UILongPressGestureRecognizer(target: self, action: #selector(MainView.handleLongGesture))

        self.view?.addGestureRecognizer(longPressGesture)

  }

    func handleLongGesture() {

        

        print("long press")

       // do Actions 

        }

    }

Solve Gradient covers the background view in swift 3

Apply Gradient to View

class Testing: UIViewController {

    

   

    override func viewDidLoad() {

        super.viewDidLoad()

       setGradientBackground()

    }

    

    func setGradientBackground() {

        let colorTop =  UIColor(red: 255.0/255.0, green: 149.0/255.0, blue: 0.0/255.0, alpha: 1.0).cgColor

        let colorBottom = UIColor(red: 255.0/255.0, green: 94.0/255.0, blue: 58.0/255.0, alpha: 1.0).cgColor

        

        let gradientLayer = CAGradientLayer()

        gradientLayer.colors = [ colorTop, colorBottom]

        gradientLayer.locations = [ 0.0, 1.0]

        gradientLayer.frame = self.view.bounds

        

        self.view.layer.addSublayer(gradientLayer) // --> This will hides the background view

    }

-->Some times it will apply full view,  better to apply gradient in viewDidLoad()

replace self.view.layer.addSublayer(gradientLayer) with 

self.view.layer.insertSublayer(gradientLayer, at: 0), this will put the layer "below" all others 

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background gradient to fill Landscape mode

-> some times gradient view will not cover total view when rotate screen .

we can solve this one to add below code

override func willAnimateRotation(to toInterfaceOrientation: UIInterfaceOrientation, duration: TimeInterval) {

        self.view.layer.sublayers?.first?.frame = self.view.bounds

}

        

   

Sliding with fade in fade out of label in swift 3

class Testing: UIViewController {

    

    

    @IBOutlet weak var slidingView: UIView!

    

    @IBOutlet weak var sliding_label: UILabel!

    override func viewDidLoad() {

        super.viewDidLoad()

       sliding_label.layer.cornerRadius=10

        sliding_label.layer.masksToBounds = true

    }

    

    override func viewWillAppear(_ animated: Bool) {

        self.sliding_label.slideInFromLeft()

        //      self.slidingTextLabel.slideInFromLeft(duration: 1.0, completionDelegate: self) // Use this line to specify a duration or completionDelegate

        self.sliding_label.text = "  "+"Sliding Registration and select location"+"  "

        self.sliding_label.alpha = 0

        self.sliding_label.fadeIn(completion: {

            (finished: Bool) -> Void in

            self.sliding_label.fadeOut()

        })

        self.sliding_label.isHidden = false

        DispatchQueue.main.asyncAfter(deadline: .now() + 7) {

            self.sliding_label.fadeOut()

        }

    }

    

}

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extensions:

extension UIView {

    // Name this function in a way that makes sense to you...

    // slideFromLeft, slideRight, slideLeftToRight, etc. are great alternative names

    func slideInFromLeft(duration: TimeInterval = 1.0, completionDelegate: AnyObject? = nil) {

        // Create a CATransition animation

        let slideInFromLeftTransition = CATransition()

        

        // Set its callback delegate to the completionDelegate that was provided (if any)

        if let delegate: AnyObject = completionDelegate {

            slideInFromLeftTransition.delegate = delegate as? CAAnimationDelegate

        }

        

        // Customize the animation's properties

        slideInFromLeftTransition.type = kCATransitionPush

        slideInFromLeftTransition.subtype = kCATransitionFromLeft

        slideInFromLeftTransition.duration = duration

        slideInFromLeftTransition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)

        slideInFromLeftTransition.fillMode = kCAFillModeRemoved

        

        // Add the animation to the View's layer

        self.layer.add(slideInFromLeftTransition, forKey: "slideInFromLeftTransition")

    }

    

    func fadeIn(duration: TimeInterval = 1.0, delay: TimeInterval = 0.0, completion: @escaping ((Bool) -> Void) = {(finished: Bool) -> Void in}) {

        UIView.animate(withDuration: duration, delay: delay, options: UIViewAnimationOptions.curveEaseIn, animations: {

            self.alpha = 1.0

        }, completion: completion)  }

    

    func fadeOut(duration: TimeInterval = 1.0, delay: TimeInterval = 3.0, completion: @escaping (Bool) -> Void = {(finished: Bool) -> Void in}) {

        UIView.animate(withDuration: duration, delay: delay, options: UIViewAnimationOptions.curveEaseIn, animations: {

            self.alpha = 0.0

        }, completion: completion)

    }

}

set Image in circlein swift 3

   override func viewDidLayoutSubviews() {

        

        imageView.layer.cornerRadius = imageView.frame.size.height/2

        imageView.clipsToBounds = true 

        

    }

How to underline a UILabel and UIButton programatically in swift 3

For Label:labelname.attributedText = NSAttributedString(string: "text", attributes:            [NSUnderlineStyleAttributeName: NSUnderlineStyle.styleSingle.rawValue])

o/p: text

For Button: let linkbuttonAttributes : [String: Any] = [NSUnderlineStyleAttributeName : NSUnderlineStyle.styleSingle.rawValue] let attributeString = NSMutableAttributedString(string: "Terms and Conditions",                                                    attributes: linkbuttonAttributes) termsofServices.setAttributedTitle(attributeString, for: .normal)

o/p: Terms and Conditions

change Navigation bar title colour programatically in swift 3

override func viewDidLoad() {        super.viewDidLoad()        let nav = self.navigationController?.navigationBar        self.title="Address Details"        nav?.tintColor = UIColor.white            }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        let nav = self.navigationController?.navigationBar
        nav?.titleTextAttributes = [NSForegroundColorAttributeName: UIColor.white]
    }