Calling function inside function in another function

Question

I'm new in iOS Programming, and I had this problem. Let's say I have these two function:

class BaseViewController: UIViewController, ErrorMessageDelegate {
    var uiView =  UIView();
    var viewErrorMessage:ErrorMessage!

    func refresh(_sender: AnyObject) {
        print("testing")
    }

    func getErrorMessage(message:String) {
        super.viewDidLoad()
        Dialog.dismiss()
        ErrorMessage.message = message
        viewErrorMessage = Bundle.main.loadNibNamed("ErrorMessage", owner: self, options: nil)?.first as! ErrorMessage
        viewErrorMessage.delegate = self
        self.view.addSubview(viewErrorMessage)

        func removeSubView() {
            viewErrorMessage.removeFromSuperview()
        }
    }
}

I want to call function removeSubView inside function refresh. I had to do that because I need to override refresh function to my subclass. And I need to put the function removeSubView in getErrorMessage because I should to. Does anyone know how to do that?

Have you tried it by writing the method outside the getErrorMessage method? — Rakesha Shastri
– Rakesha Shastri, Commented Apr 22, 2019 at 9:32
This is not Swift only. This is because you don't have access to other scopes. I would suggest moving removeSubView() to an accessible scope inside your BaseViewController(), you can make it private to prevent others from calling it. — Ennabah
– Ennabah, Commented Apr 22, 2019 at 9:33

Hitesh Surani · Accepted Answer · 2019-04-22 09:44:42Z

4

Please refer below code. It will help you to resolve the issue.

Code:

class BaseViewController: UIViewController, ErrorMessageDelegate {
    var uiView =  UIView();
    var viewErrorMessage:ErrorMessage!

    func refresh(_sender: AnyObject) {
        removeSubView()
    }

    func getErrorMessage(message:String) {
        super.viewDidLoad()
        Dialog.dismiss()
        ErrorMessage.message = message
        viewErrorMessage = Bundle.main.loadNibNamed("ErrorMessage", owner: self, options: nil)?.first as! ErrorMessage
        viewErrorMessage.delegate = self
        self.view.addSubview(viewErrorMessage)
    }
    func removeSubView() {
        viewErrorMessage.removeFromSuperview()
    }
}

edited Apr 22, 2019 at 9:44

answered Apr 22, 2019 at 9:29

Hitesh Surani

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Comments

Booharin · Accepted Answer · 2019-04-22 09:24:58Z

2

Yes, that is possible

func a() {
    c()
}

func b() {
    c()
}

func c() {
    print("hello world")
}

answered Apr 22, 2019 at 9:24

Booharin

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Comments

magnuskahr · Accepted Answer · 2019-04-22 09:24:00Z

1

no it is not possible - but I wonder why you would do that?

answered Apr 22, 2019 at 9:24

magnuskahr

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3 Comments

magnuskahr Over a year ago

What does removeSubview() have to do with getErrorMessage()? Nothing. So there is no reason for it to be at the scope of getErrorMessage

Firda Sahidi Over a year ago

viewErrorMessage has to be called inside getErrrorMessage because it added there

magnuskahr Over a year ago

@FirdaSahidi Well move it out

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