ios - 如何解决 "Type of expression in ambiguous without more context"？

Question

let attributedString  =  NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil, error: nil)!

编译器错误:“表达式类型不明确，没有更多上下文” 怎么解决的？

Answer 1

要求[String : AnyObject]attributedOptions 参数要求的格式

do {
        let encodedData = yourEncodedString.dataUsingEncoding(NSUTF8StringEncoding)!
        let attributedOptions : [String: AnyObject] = [
            NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType,
            NSCharacterEncodingDocumentAttribute: NSUTF8StringEncoding
        ]
        let attributedString = try NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil)
       // self.init(attributedString.string)
    } catch {
        fatalError("Unhandled error: \(error)")
    }