Value of type UILabel has no member constant

Question

jsshivalik OP

Created Jul ’17

Replies 4

Boosts 0

Views 2.2k

Participants 3

Hi

Below is the code

@IBAction func btnAction(_ sender: UIButton) {
        if isLabelAtMaxHeight {
            btn.setTitle("Read more", for: .normal)
            isLabelAtMaxHeight = false
            lblHeight.constant = 70
        }
        else {
            btn.setTitle("Read less", for: .normal)
            isLabelAtMaxHeight = true
            lblHeight.constant = getLabelHeight(text: "asaSAsas aasadsadsadasd dsadsdasdasdasdasdasdasdasdasdasdasdasdd sdsadasdasdsadasdasdasdasdsd sadsadsadsadasdasdasdasdasd sdsadsadasdasdasdasdd sadsadassdadsadsadsadsadsadsa dssaddsdsadsdsdsdsdsadsads sdadsdsadsadsadsadsdsadsadsa saddssdadsadsa", width: view.bounds.width)
        }
    }

Boost

Answer 1

Claude31 OP

Jul ’17

please take time to be precise on the problem you have.

What is lblHeight ? It is defined nowhere.

are you sure you want to set the constant of a UILabel or of a constraint on UILabel ?

on which line do you get the error ? Both 5 and 9 ?

0

Answer 2

jsshivalik OP

Jul ’17

Hi

On these lines . I want to implement Read More/ Read Less functionality. I am trying from this link

https://stackoverflow.com/questions/42338768/read-more-less-with-swift-3

lblHeight.constant = 70

lblHeight.constant = getLabelHeight(text: "adsa", width: view.bounds.width)

I have defined Outlet lblHeight

Thanks

0

Answer 3

carstengp OP

Jul ’17

As Claude has already hinted at it sounds like you're expecting lblHeight to be a NSLayoutConstraint (which is the case in the StackOverflow code) - from the error message that is only supplied in the title of this question it sounds like you have defined it as a UILabel

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Answer 4

Claude31 OP

Jul ’17

you should have :

@IBOutlet weak var lblHeight: NSLayoutConstraint!

Most likely you've defined it as UILabel!

Once again, if you want help from this forum, be precise in your requests and provide the information that is needed.

0