CODEWITHSUNDEEP
swift3segueuistoryboardsegue
Austin Berenyi
Austin Berenyi

Reputation: 1053

Why do I get 'Instance member '___' cannot be used on type '___' in prepareForSegue?

I am trying to pass data from one view controller to another using this method:

func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {

        if segue.identifier == "toSecondViewController" {
            let secondViewController = segue.destination as! SecondViewController

            SecondViewController.username = "Austin"
        }

    }

However, I'm getting the error

Instance member 'username' cannot be used on type 'SecondViewController'

the variable username has been defined in SecondViewController and the segue is indeed named toSecondViewController. What might be causing this error?

Upvotes: 1

Views: 42

Answers (1)

Martin Muldoon
Martin Muldoon

Reputation: 3428

This happens to me all the time.

if segue.identifier == "toSecondViewController" {
            let secondViewController = segue.destination as! SecondViewController

            SecondViewController.username = "Austin"
        }

Notice how SecondViewController.username = "Austin" has a capital S.. it should be lower case.

You declare a variable let secondViewController as! SecondViewController but then you try to set .userName on SecondViewController, capital S

You should set .userName on the variable secondViewController. Lowercase s, which is what you intended.

Upvotes: 1

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