Cannot convert value of type 'String!' to expected argument type error

Question

I have a public function:

public func lastActivityFor(userName: String) -> String { ... }

and later I want to call it as:

OneLastActivity.lastActivityFor("username")

but the last line get error:

Cannot convert value of type 'String!' to expected argument type 'OneLastActivity'

Why it appears if I send to those function String as suggested?(userName: String)

Any ideas how can I fix it? If you want more code, just ask me about.

Dharmesh Kheni · Accepted Answer · 2015-10-14 06:32:14Z

6

Just create an instance of your class this way:

let temp = OneLastActivity()

Now you can use it's method:

temp.lastActivityFor("username")

Or you can directly use it this way:

OneLastActivity().lastActivityFor("username")

Hope it helps.

answered Oct 14, 2015 at 6:32

Dharmesh Kheni

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2 Comments

Oh, I found answer at the same time with you )) I used OneLastActivity.sharedInstance.lastActivityFor("username")

@DharmeshKheni sir answer this related question please, stackoverflow.com/questions/42733225/…