Cannot convert value of type 'NSString'? to expected argument type 'String'

Question

I am trying to load HTML content from this website onto a Webview. But I am getting the following error:

Cannot convert value of type 'NSString?' to expected argument type 'String'

Here is my code:

override func viewDidLoad() {
        super.viewDidLoad()

        let webUrl = NSURL(string: "http://www.stackoverflow.com/users/5438240/naishta")

        let webContent = NSURLSession.sharedSession().dataTaskWithURL(webUrl!){
            (data,response,error) in

            if error == nil{

                let readableForm = NSString(data: data!, encoding: NSUTF8StringEncoding)
                print(readableForm)

                self.displayWeb.loadHTMLString(readableForm, baseURL: nil) //here is where the error is thrown
            }


        }
        webContent.resume()

    }

Leo Dabus · Accepted Answer · 2015-11-27 00:22:53Z

3

You should use Swift native type String and use guard to make sure data it is not nil as follow:

guard 
    let data = data where error == nil, readableForm = String(data: data, encoding: NSUTF8StringEncoding)
else { return }

print(readableForm)
self.displayWeb.loadHTMLString(readableForm, baseURL: nil)

answered Nov 27, 2015 at 0:22

Leo Dabus

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Leo · Accepted Answer · 2015-11-27 01:27:59Z

1

Was able to resolve myself with the change as below, needed a "as! String" conversion

 self.displayWeb.loadHTMLString(readableForm as! String, baseURL: nil)

edited Nov 27, 2015 at 1:27

Leo

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answered Nov 27, 2015 at 0:21

Naishta

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Comments

Albi · Accepted Answer · 2017-06-30 06:03:34Z

-1

The actual way is

var a:NSString = "this is"
let c = String(a)

edited Jun 30, 2017 at 6:03

answered Jun 14, 2017 at 9:54

Albi

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1 Comment

Albi Over a year ago

@EricAya Can you show me a Apple Doc which tells developer to use without __.init() ? Just to make it a fact.

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