CODEWITHSUNDEEP
iosxcodeexceptionswift3
Tapas Pal
Tapas Pal

Reputation: 7207

Swift-3 error: '-[_SwiftValue unsignedIntegerValue]: unrecognized selector

Following code was perfectly worked with old swift. This is an extension of String

func stringByConvertingHTML() -> String {
    let newString = replacingOccurrences(of: "\n", with: "<br>")
    if let encodedData = newString.data(using: String.Encoding.utf8) {
        let attributedOptions : [String: AnyObject] = [
            NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType as AnyObject,
            NSCharacterEncodingDocumentAttribute: String.Encoding.utf8 as AnyObject
        ]
        do {
            let attributedString = try NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil) //Crash here
            return attributedString.string
        } catch {
            return self
        }
    }
    return self
}

But in swift 3 it crashes saying

*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[_SwiftValue unsignedIntegerValue]: unrecognized selector sent to instance 0x6080002565f0'

Anyone please suggest me what need to do?

Upvotes: 56

Views: 11980

Answers (3)

Peter Kuennemann
Peter Kuennemann

Reputation: 91

This post saved my day. After migrating to Swift 3, the little change String.Encoding.utf8 to String.Encoding.utf8.rawValue fixed the trap reported here.

Orignal line:

...
    options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,
              NSCharacterEncodingDocumentAttribute: String.Encoding.utf8],
...

changed to 

options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,
          NSCharacterEncodingDocumentAttribute: String.Encoding.utf8.rawValue],

add the .rawValue to the end...

Upvotes: 8

Sachin Vas
Sachin Vas

Reputation: 1767

I ran into the same problem:

let attributedOptions : [String: AnyObject] = [
            NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType as AnyObject,
            NSCharacterEncodingDocumentAttribute: String.Encoding.utf8 as AnyObject
        ]

Here the String.Encoding.utf8 the type check fails. Use NSNumber(value: String.Encoding.utf8.rawValue)

Upvotes: 96

zidanex
zidanex

Reputation: 524

In Swift3 no cast to AnyObject is needed anymore and also no NSNumber.

let attrs: [String: Any] = [
            NSDocumentTypeDocumentAttribute : NSHTMLTextDocumentType,
            NSCharacterEncodingDocumentAttribute: String.Encoding.utf8.rawValue
        ]

Upvotes: 48

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