xcode Swift-3 错误：'-[_SwiftValue unsignedIntegerValue]：无法识别的选择器
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Swift-3 error: '-[_SwiftValue unsignedIntegerValue]: unrecognized selector
提问by Tapas Pal
Following code was perfectly worked with old swift. This is an extension of String
以下代码与旧的 swift 完美配合。这是 String 的扩展
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
但是在 swift 3 中它崩溃了说
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[_SwiftValue unsignedIntegerValue]: unrecognized selector sent to instance 0x6080002565f0'
*** 由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[_SwiftValue unsignedIntegerValue]：无法识别的选择器发送到实例 0x6080002565f0”
Anyone please suggest me what need to do?
任何人请建议我需要做什么？
回答by Sachin Vas
I ran into the same problem:
我遇到了同样的问题：
let attributedOptions : [String: AnyObject] = [
NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType as AnyObject,
NSCharacterEncodingDocumentAttribute: String.Encoding.utf8 as AnyObject
]
Here the String.Encoding.utf8the type check fails. Use NSNumber(value: String.Encoding.utf8.rawValue)
这里String.Encoding.utf8类型检查失败。用NSNumber(value: String.Encoding.utf8.rawValue)
回答by zidanex
In Swift3 no cast to AnyObject is needed anymore and also no NSNumber.
在 Swift3 中，不再需要转换为 AnyObject，也不需要 NSNumber。
let attrs: [String: Any] = [
NSDocumentTypeDocumentAttribute : NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: String.Encoding.utf8.rawValue
]
回答by Peter Kuennemann
This post saved my day. After migrating to Swift 3, the little change String.Encoding.utf8to String.Encoding.utf8.rawValuefixed the trap reported here.
这篇文章拯救了我的一天。迁移到 Swift 3 后，修复陷阱的小改动 String.Encoding.utf8在String.Encoding.utf8.rawValue这里报告。
Orignal line:
原线：
...
options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: String.Encoding.utf8],
...
changed to
变成
options: [NSDocumentTypeDocumentAttribute:NSHTMLTextDocumentType,
NSCharacterEncodingDocumentAttribute: String.Encoding.utf8.rawValue],
add the .rawValueto the end...
添加.rawValue到最后...
