setting initializer (init) in a subclass swift

Question

I'm trying to understand how to call from another class for example let creation = menuButtonController(image:#imageLiteral(resourceName: "maps")) then in menuButtonControlleri set this:

class menuButtonController: UIView {

    let buttonView = UIView()
    let button = UIButton(type: .custom)
    var imageButton: UIImageView


    init(frame: CGRect, image: UIImage) {
        super.init(frame: frame,image: image) //Cannot invoke  UIView.init with an argument list of type (frame cgrect, image uiimage)
        self.imageButton.image = image
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    /* other functions */
}

it give me a error that i'm not able to solve. can anyone helps me?

Edit

now if i want to call only initializer with (image: UIImage) should i use a convenience init like this right?

convenience init(image: UIImage) {
    self.init(image: image)
    self.imageButton.image = image
}

it don't give me errors but crash when i try to run the application

i write it in the comment inside the code. here's a copy: Cannot invoke UIView.init with an argument list of type (frame cgrect, image uiimage) — Fiorelo Odobashi, May 25 '17 at 20:57
Naming a subclass of `UIView` with a name of the form `xxxController` is a **terrible** idea. A view object and a controller object are totally different animals, and an object named `xxxController` should be a controller object, not a view object. Oh, and class names should start with an upper-case letter. So your class should be named something like `MenuButtonView` — Duncan C, May 25 '17 at 21:05

score 1 · Answer 1 · answered May 25 '17 at 20:59

1

There is no method init(frame: CGRect, image: UIImage) in the super class UIView. You need to initialize imageButton first and call the designated initializer init(frame:

init(frame: CGRect, image: UIImage) {
    self.imageButton.image = image
    super.init(frame: frame)
}

By the way: Class names are supposed to start with capital letter.

answered May 25 '17 at 20:59

vadian

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...and a view object should not have a name that ends with "Controller"... – Duncan C May 25 '17 at 21:06
now it show me a error: property self.imagebutton not initializer at super.init call (class changed in Menubutton – Fiorelo Odobashi May 25 '17 at 21:06
Yes, I wrote *You need to initialize `imageButton` first* – vadian May 25 '17 at 21:07
ok thank you, i have another question. if i want only to call a initializer with image: UIImage? (see Edit in the main post) – Fiorelo Odobashi May 25 '17 at 21:35
You have to call a (designated) initializer in the super class in any case or a convenience initializer which calls an appropriate initializer in the super class. – vadian May 25 '17 at 21:46

setting initializer (init) in a subclass swift

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1 Answers1