[SWIFT] 특정 텍스트의 UITextView 변화 텍스트 색상

특정 텍스트의 UITextView 변화 텍스트 색상

해결법

1. ---

   1.미안 해요, 당신의 메시지를 발견했습니다. 다음은 작업 예 (놀이터에서 테스트)입니다 :

   미안 해요, 당신의 메시지를 발견했습니다. 다음은 작업 예 (놀이터에서 테스트)입니다 :

   import UIKit
   
   
   func apply (string: NSMutableAttributedString, word: String) -> NSMutableAttributedString {
       let range = (string.string as NSString).rangeOfString(word)
       return apply(string, word: word, range: range, last: range)
   }
   
   func apply (string: NSMutableAttributedString, word: String, range: NSRange, last: NSRange) -> NSMutableAttributedString {
       if range.location != NSNotFound {
           string.addAttribute(NSForegroundColorAttributeName, value: UIColor.redColor(), range: range)
           let start = last.location + last.length
           let end = string.string.characters.count - start
           let stringRange = NSRange(location: start, length: end)
           let newRange = (string.string as NSString).rangeOfString(word, options: [], range: stringRange)
           apply(string, word: word, range: newRange, last: range)
       }
       return string
   }
   
   var chordsArray = ["Cmaj", "Bbmaj7"]
   var text = "Cmaj Bbmaj7 I Love Swift Cmaj Bbmaj7 Swift"
   var newText = NSMutableAttributedString(string: text)
   
   for word in chordsArray {
       newText = apply(newText, word: word)
   }
   
   newText
   

2. ---

   2.경우, 다른 사람이 내가 :) 내 엑스 코드 (9) 놀이터에서 무엇을 얻을 빠른 4에 필요합니다.

   경우, 다른 사람이 내가 :) 내 엑스 코드 (9) 놀이터에서 무엇을 얻을 빠른 4에 필요합니다.

   import UIKit
   import PlaygroundSupport
   class MyViewController : UIViewController
   {
       override func loadView()
       {
           let view = UIView()
           view.backgroundColor = .white
   
           let textView = UITextView()
           textView.frame = CGRect(x: 150, y: 200, width: 200, height: 20)
           textView.text = "@Kam @Jam @Tam @Ham"
           textView.textColor = .black
           view.addSubview(textView)
           self.view = view
   
           let query = "@"
   
           if let str = textView.text {
               let text = NSMutableAttributedString(string: str)
               var searchRange = str.startIndex..<str.endIndex
               while let range = str.range(of: query, options: NSString.CompareOptions.caseInsensitive, range: searchRange) {
                   text.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor.gray, range: NSRange(range, in: str))
                   searchRange = range.upperBound..<searchRange.upperBound
               }
               textView.attributedText = text
           }
       }
   }
   PlaygroundPage.current.liveView = MyViewController()
   

   나는 빠른 3, 수동으로 다음과 같이 NSRange에 범위 (String.Index)를 변환 할 필요가 있다고 생각합니다.

    let start = str.distance(from: str.startIndex, to: range.lowerBound)
    let len = str.distance(from: range.lowerBound, to: range.upperBound)
    let nsrange = NSMakeRange(start, len)
    text.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor.gray, range: nsrange)
   

3. ---

   3.스위프트 4.2 (5)

   스위프트 4.2 (5)

   let string = "* Your receipt photo was not clear or did not capture the entire receipt details. See our tips here.\n* Your receipt is not from an eligible grocery, convenience or club store."
   let attributedString = NSMutableAttributedString.init(string: string)
   let range = (string as NSString).range(of: "See our tips")
   attributedString.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.blue, range: range)
   txtView.attributedText = attributedString
   txtView.isUserInteractionEnabled = true
   txtView.isEditable = false
   

   산출

from https://stackoverflow.com/questions/33472171/uitextview-change-text-color-of-specific-text by cc-by-sa and MIT license