ibdesignable

TL:DR Paste this into Swift playground: import UIKit public protocol NibLoadable { static var nibName: String { get } } extension NibLoadable where Self: UIView { public static var nibName: String { return String(describing: self) } func printName(){ print(Self.nibName) } } public class Shoes: UIView, NibLoadable { required init?(coder aDecoder: NSCoder) { super.init(coder: aDecoder) printName() } override init(frame: CGRect) { super.init(frame: frame) printName() } } public class Cake: Shoes { } let cake = Cake() // this line prints 'Shoes' How do i make it print Cake , not Shoes ? Full

This class will put perspective on an upright image. It works perfectly BUT does not work live in Storyboard with IBDesignable. Which is very sad. Is it possible to use CATransform3D and the like for live display on Storyboard with IBDesignable?? // Twist.swift .. twist on Y, perspective from the left import UIKit @IBDesignable class Twist:UIViewController { @IBInspectable var perspective:CGFloat = 0.5 // -1 to 1 @IBOutlet var im:UIView! // the image you want to twist on y override func prepareForInterfaceBuilder() { twist(perspective) } override func viewDidAppear(animated: Bool) { twist

I would like to create generic extension for class to add some designables functionality to any UIView subclass and by this avoid adding functionality to all subclasses. So, would be nice to add extension for UIView which conforms to protocol SomeProtocol (It's empty because it is just a tag to mark classes which I want functionality to be added). Then just add that protocol in any UIView subclass where I want that functionality to be implemented like this: protocol SomeProtocol { //empty } class BCBorderedView : UIView, SomeProtocol { //empty } class BCBorderedSearch: UISearchBar,

here is the project of this problem in the google drive: https://drive.google.com/file/d/1Js0t-stoerWy8O8uIOJl_bDw-bnWAZPr/view?usp=sharing I make a custom navigation bar (the red view in the picture below) using IBDesignable code below. I want, if the iPhone has top notch like iPhone X, iPhone XR, then the height of custom navigation bar is 88, otherwise the height is 64. I make an IBDesignable code so I can reuse this code import UIKit @IBDesignable class CustomParentNavigationBarView: UIView { override func awakeFromNib() { super.awakeFromNib() self.setHeight() } override func

I tried to make @IBDesignable UIView subclass following this ( link ) tutorial. First custom view goes fine. But when I try to make another one, I have errors. First I got failed to update auto layout status: the agent crashed and Failed to render instance of ... . Somehow I started to be able to biuld and run project with these errors, but then I get new error - EXC_BAD_ACCESS ... on line let view = nib.instantiateWithOwner(self, options: nil)[0] as! UIView . Here is whole method: func loadViewFromNib() -> UIView { let bundle = NSBundle(forClass: self.dynamicType) let nib = UINib(nibName: