How to pass the func () value of the view element to another Controller - swift

Question

First I'll start with what I did, and in the end I will describe the problem, so it will be clearer. In general, after Android Studio, working with view elements in Xcode is still a task. I understand that a good programmer will not write the same code twice, so that each time in different Controller does not describe each time the view elements - so I wrote this function in the main Controller
class func designForButton (button: UIButton){
button.layer.masksToBounds = true
button.layer.cornerRadius = 8
}
Then you can access it in different Controller
class RegisterViewController: UIViewController {
#IBOutlet weak var buttonBack: UIButton!
override func viewDidLoad() {
super.viewDidLoad()
ViewController.designForButton(button: buttonBack)
}
Now, what is not clear. I loaded the framework to work with Toast. And I described its values in the main Controller
func designForToast(message: String){
let style = CSToastStyle.init(defaultStyle: {
}())
_ = style?.backgroundColor = UIColor.gray
_ = style?.titleColor = UIColor.cyan
_ = style?.messageColor = UIColor.darkGray
self.view.makeToast(message, duration: 2, position: self.bottomLayoutGuide, title: "title", image: UIImage (named: "logo.jpg"), style: style ) { (success: Bool) in
}
}
But the matter is that in this case I can address to it exclusively in the same Controller
_=self.designForToast(message: "Its a Toast")
As soon as I want to make func () - like class func () to work in another Controller, Xcode starts to highlight that it's impossible, and due to my small experience, I can not fix it myself.

Answer 1

I suggest that you add a viewController parameter in the method so that it looks like this:
static func showToast(message: String, on viewController: UIViewController){ // I also renamed the method as well
let style = CSToastStyle.init(defaultStyle: {
}())
_ = style?.backgroundColor = UIColor.gray
_ = style?.titleColor = UIColor.cyan
_ = style?.messageColor = UIColor.darkGray
viewController.view.makeToast(message, duration: 2, position: viewController.bottomLayoutGuide, title: "title", image: UIImage (named: "logo.jpg"), style: style ) { (success: Bool) in
}
}
I also suggest that you put these "helper functions" in a designated class, like StyleHelper or something like that.
Then you can use it like this in a View Controller:
StyleHelper.showToast(message: "Hello", on: self)
Or better yet, make this an extension method!
extension UIViewController {
func showMyToast(message: String){
let style = CSToastStyle.init(defaultStyle: {
}())
_ = style?.backgroundColor = UIColor.gray
_ = style?.titleColor = UIColor.cyan
_ = style?.messageColor = UIColor.darkGray
self.view.makeToast(message, duration: 2, position: self.bottomLayoutGuide, title: "title", image: UIImage (named: "logo.jpg"), style: style ) { (success: Bool) in
}
}
}
You can then use it like this in a View Controller:
self.showMyToast(message: "Hello")
Side Note:
For views that conform to UIAppearance protocol, you can access the appearance() property to change its style globally. For example, you can do this in didFinishLaunchingWithOptions:
UIButton.appearance().tintColor = .red
And every UIButton you create will be red.

Answer 2

I think you need to define a protocol , and an extension to UIViewController to provide a default implementation for your method.....if this was the question...:P
protocol ToastProtocol: class {
func showToast(message:String)
}
extension ToastProtocol where Self: UIViewController {
func showToast(message:String){
///yourcode
}
}
After that you can youse your showToast method in any UIViewController