How to convert string to unicode(UTF-8) string in Swift?

问题

How to convert string to unicode(UTF-8) string in Swift?

In Objective I could write smth like that:

NSString *str = [[NSString alloc] initWithUTF8String:[strToDecode cStringUsingEncoding:NSUTF8StringEncoding]];

how to do smth similar in Swift?

回答1:

Use this code,

let str = String(UTF8String: strToDecode.cStringUsingEncoding(NSUTF8StringEncoding))

hope its helpful

回答2:

Swift 4 I have created a String extension

func utf8DecodedString()-> String {
     let data = self.data(using: .utf8)
     if let message = String(data: data!, encoding: .nonLossyASCII){
            return message
      }
      return ""
}

func utf8EncodedString()-> String {
     let messageData = self.data(using: .nonLossyASCII)
     let text = String(data: messageData!, encoding: .utf8)
     return text
}

回答3:

Swift 4:

let str = String(describing: strToDecode.cString(using: String.Encoding.utf8))

来源：https://stackoverflow.com/questions/37087325/how-to-convert-string-to-unicodeutf-8-string-in-swift