How to switch string with HTML tags to clear string in Swift 3

Question

I have old code:

   func htmlToText(encodedString:String) -> String?
{
    let encodedData = encodedString.dataUsingEncoding(NSUTF8StringEncoding)!
    do
    {
        return try NSAttributedString(data: encodedData, options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,NSCharacterEncodingDocumentAttribute:NSUTF8StringEncoding], documentAttributes: nil).string
    } catch let error as NSError {
        print(error.localizedDescription)
        return nil
    }
}

and I want to translate it to swift 3, now i have:

let encodedData = encodedString.data(using: String.Encoding.utf8)!
    do
   {
        return try NSAttributedString(data: encodedData, options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,NSCharacterEncodingDocumentAttribute:String.Encoding.utf8], documentAttributes: nil).string
    } catch let error as NSError {
        print(error.localizedDescription)
        return nil
    }

This code generate error: Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[_SwiftValue unsignedIntegerValue]: unrecognized selector sent to instance 0x608000251d30' I have no idea what could went wrong. Can anybody help me?

OOPer · Accepted Answer · 2016-10-12 21:23:44Z

2

String.Encoding is a Swift struct, which cannot be passed to Objective-C world. When Swift find such things in Any, it generates _SwiftValue which is completely useless in Objective-C.

Try this:

return try NSAttributedString(data: encodedData, options: [
    NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,
    NSCharacterEncodingDocumentAttribute:String.Encoding.utf8.rawValue
], documentAttributes: nil).string

answered Oct 12, 2016 at 21:23

OOPer

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