Cannot create a UIButton using declaration

Question

I am trying to create a UIButton by trying to initialise in a viewController as shown below. However, I am getting cannot convert value of type () -> _ to specified type UIButton error which I don't have idea how I stuck into.

let loginRegisterButton : UIButton = {
    let button = UIButton(type: .System)
    button.backgroundColor = UIColor(r: 80, g: 101, b: 161)
    button.setTitle("Register", forState: .Normal)
    button.translatesAutoresizingMaskIntoConstraints = false
    return button
}

This is the sample code and I have used a UIColor extension and I have attached the screenshot of error herewith.

As far as I know, this is not a syntax error, but I have no idea what I am missing.

Rohit Pradhan · Accepted Answer · 2016-07-01 08:30:12Z

2

you forgot to add

()

at the end Use Below code ,

let loginRegisterButton : UIButton = {
    let button = UIButton(type: .System)
    button.backgroundColor = UIColor(r: 80, g: 101, b: 161)
    button.setTitle("Register", forState: .Normal)
    button.translatesAutoresizingMaskIntoConstraints = false
    return button
}()

What you are missing is mentioned in the error message, that you are assigning closure to UIButton instance. By adding () this will create instance of UIButton.

edited Jul 1, 2016 at 8:30

answered Jul 1, 2016 at 8:23

Rohit Pradhan

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Jeet Over a year ago

Please also support your answer with explanation that way it would be of a great help to other learners.

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