How to set addtarget to custom UIView - ios

Question

I have a custom UIView called Icons. Everything is working perfectly fine right now except one thing. The problem that i am having is being able to set userinteraction to be working or to either make the button i have in my class to be working. When I add a target to the button, i get an error that crashes everything and with the userinteraction to the view, i get no response.
class Icons: UIView {
let xUnit = UIScreen.mainScreen().bounds.width/20
let yUnit = UIScreen.mainScreen().bounds.height/30
var name: String = String()
var image: UIImage = UIImage()
let font = UIFont(name: "HelveticaNeue-Thin", size: 16.0)!
override init(frame: CGRect) {
super.init(frame: frame)
self.userInteractionEnabled = true
}
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func addCustomView(name:String, image: UIImage ){
let label: UILabel = UILabel()
label.frame = CGRectMake(0, 1.5*xUnit, 3.4*xUnit, 2.7*xUnit)
label.textAlignment = NSTextAlignment.Center
label.font = font
label.text = name
self.addSubview(label)
let btn: UIButton = UIButton()
btn.frame=CGRectMake(0.3*xUnit, 0, 2.5*xUnit, 2.5*xUnit)
btn.setImage(image, forState: .Normal)
self.addSubview(btn)
}
}
And this is the class I'm trying to get connect it with which is in a completely different class
func tapSettings(tapGestureRecognizer: UITapGestureRecognizer){
let touchPoint = tapGestureRecognizer.locationInView(self.view)
if(CGRectContainsPoint(settings.frame, touchPoint)){
print("hi")
}
}
when I am trying to connect it to the button I say this:
btn.addTarget(self,action: #selector(HomeScreen.tapSettings))
and when I try and connect it to the view I say this :
let settingsTouch = UITapGestureRecognizer(target: self, action: #selector(HomeScreen.tapSettings))
settingsTouch.numberOfTapsRequired = 1
settingsTouch.numberOfTouchesRequired = 1
self.view.addGestureRecognizer(settingsTouch)

Answer 1

There are two problems in your code:
You are setting the target of the button to self when you should be setting it to an instance of HomeScreen, if that's where the method you want to call is declared
The argument a button action method receives is not UITapGestureRecognizer, but the clicked button instead, so you should replace your tapSettings method with something like this:
func tapSettings(button: UIButton){

Answer 2

try this
btn.addTarget(HomeScreen.self, action: #selector(HomeScreen.tapSettings(_:)), forControlEvents: UIControlEvents.TouchUpInside)
I hope this helps