How to make a button work on a custom view from .xib instantiated programmatically - ios

Question

The button works if I add the view via the Interface Builder but it doesn't work when I add the view programmatically.
.xib design:
My custom view class:
class customView: UIView {
static let singleton1 = customView()
#IBOutlet weak var newView: UIView!
#IBAction func changeColor(_ sender: Any) {
newView.backgroundColor = UIColor.systemBlue // this is what the button should do
}
override init(frame: CGRect) {
super.init(frame: frame)
commonInit()
window?.windowLevel = UIWindow.Level(rawValue: CGFloat.greatestFiniteMagnitude)
}
required init?(coder: NSCoder) {
super.init(coder: coder)
commonInit()
window?.windowLevel = UIWindow.Level(rawValue: CGFloat.greatestFiniteMagnitude)
}
func commonInit() {
let viewFromXib = Bundle.main.loadNibNamed("customView", owner: self, options: nil)![0] as! UIView
viewFromXib.bounds = self.bounds
addSubview(viewFromXib)
}
This is the way I instantiate it:
#IBAction func showView(_ sender: Any) {
let playerview = customView.singleton1
view.translatesAutoresizingMaskIntoConstraints = false
self.view.addSubview(playerview)
playerview.tag = 100
UIApplication.shared.keyWindow?.addSubview(playerview)// yes it needs to be in the window
Not sure if my initializer is wrong or something else.

Answer 1

You are trying to load "customView" xib into its own init method. Try below.
Replace commonInit() method with getView(frame:CGRect)->UIView
class customView: UIView {
static let singleton1 = customView()
#IBOutlet weak var newView: UIView!
#IBAction func changeColor(_ sender: Any) {
newView.backgroundColor = UIColor.systemBlue // this is what the button should do
}
override init(frame: CGRect) {
super.init(frame: frame)
window?.windowLevel = UIWindow.Level(rawValue: CGFloat.greatestFiniteMagnitude)
}
required init?(coder: NSCoder) {
super.init(coder: coder)
window?.windowLevel = UIWindow.Level(rawValue: CGFloat.greatestFiniteMagnitude)
}
func getView(frame:CGRect)->UIView{
let viewFromXib = Bundle.main.loadNibNamed("customView", owner: nil, options: nil)![0] as! UIView
viewFromXib.frame = frame
return viewFromXib
}
}
Replace showView() method
#IBAction func showView(_ sender: Any) {
let playerview = customView.singleton1.getView(frame: CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: 200))
self.view.addSubview(playerview)
playerview.tag = 100
UIApplication.shared.keyWindow?.addSubview(playerview)
}