无法将类型 'NSRange'（又名“_NSRange”）的值转换为预期的参数类型 'Range<Index>'（又名 'Range<String.CharacterView.Index>'）

Question

我的代码中有一个错误，例如 "Cannot convert value of type 'NSRange' (aka '_NSRange') to expected argument type 'Range' (aka 'Range')"，但我不知道如何解决这个问题，有人能帮帮我吗？

这是我的 post 我的代码。

NSUserDefaults.standardUserDefaults().setObject("Hey I have started using this Chat App", forKey: "Status")
            var strNumber: String = txtPhoneNumber.text!
            var myRange: NSRange = NSMakeRange(0, 2)
            var myRange1: NSRange = NSMakeRange(0, 1)
            var ran: String = strNumber.substringWithRange(myRange)  ------>  //This line error shows.
            var ran1: String = strNumber.substringWithRange(myRange1)
            if (ran == "00") || (ran == "60") || (ran == "62") || (ran == "65") || (ran == "91") || (ran == "44") {
                strNumber = strNumber.stringByReplacingOccurrencesOfString(ran, withString: "") as String
            }
            else if (ran1 == "0") {

                strNumber = strNumber.stringByReplacingOccurrencesOfString(ran1, withString: myRange1) as NSString
                //str_number = str_number.stringByReplacingOccurrencesOfString(ran1, withString: "", options: NSCaseInsensitiveSearch, range: myRange1)
            }

Answer 1

您应该将 strNumber 转换为 NSString：var strNumber: NSString = txtPhoneNumber.text!

更多信息：NSRange to Range<String.Index>

Answer 2

substringWithRange 方法适用于 NSString 类型

var strNumber: String = txtPhoneNumber.text!

更改以上行

var strNumber: NSString = txtPhoneNumber.text as! NSString

Answer 3

Swift 4:

首先对字符串进行类型转换，然后对该类型转换字符串使用 class 方法

let typeCasteToStringFirst = textField.text as NSString?
let newString = typeCasteToStringFirst?.replacingCharacters(in: range, with: string)

无法将类型 'NSRange'（又名“_NSRange”）的值转换为预期的参数类型 'Range<Index>'（又名 'Range<String.CharacterView.Index>'）

Cannot convert value of type 'NSRange' (aka '_NSRange') to expected argument type 'Range<Index>' (aka 'Range<String.CharacterView.Index>')

swift

nsrange