迅捷4.2

Question

我遇到的问题是我希望能够在TextView中更改某些文本的textColor。我正在使用连接字符串，只想要我附加到TextView文本中的字符串。似乎我想要使用的是NSMutableAttributedString，但我找不到任何有关如何在Swift中使用它的资源。到目前为止我所拥有的是这样的：

let string = "A \(stringOne) with \(stringTwo)"
var attributedString = NSMutableAttributedString(string: string)
textView.attributedText = attributedString

从这里我知道我需要找到需要更改textColor的单词范围，然后将它们添加到属性字符串中。我需要知道的是如何从attributionString中找到正确的字符串，然后更改它们的textColor。

由于我的评分太低，我无法回答我自己的问题，但这是我找到的答案

我通过翻译来自

的翻译来找到我自己的答案

Change attributes of substrings in a NSAttributedString

以下是Swift中的实现示例：

let string = "A \(stringOne) and \(stringTwo)"
var attributedString = NSMutableAttributedString(string:string)

let stringOneRegex = NSRegularExpression(pattern: nameString, options: nil, error: nil)
let stringOneMatches = stringOneRegex.matchesInString(longString, options: nil, range: NSMakeRange(0, attributedString.length))
for stringOneMatch in stringOneMatches {
    let wordRange = stringOneMatch.rangeAtIndex(0)
    attributedString.addAttribute(NSForegroundColorAttributeName, value: UIColor.nameColor(), range: wordRange)
}

textView.attributedText = attributedString

由于我想要更改多个字符串的textColor，我将创建一个帮助函数来处理它，但这适用于更改textColor。

Answer 1

我看到你在某种程度上回答了这个问题，但是在不使用正则表达式回答标题问题的情况下提供了一种更简洁的方式：

要更改文本长度的颜色，您需要知道字符串中有颜色字符的开始和结束索引，例如

var main_string = "Hello World"
var string_to_color = "World"

var range = (main_string as NSString).rangeOfString(string_to_color)

然后转换为属性字符串并使用＆＃39;添加属性＆＃39;使用NSForegroundColorAttributeName：

var attributedString = NSMutableAttributedString(string:main_string)
attributedString.addAttribute(NSForegroundColorAttributeName, value: UIColor.redColor() , range: range)

您可以在Apple's documentation

中找到可以设置的其他标准属性的列表

Answer 2

SWIFT 5

let main_string = "Hello World"
let string_to_color = "World"

let range = (main_string as NSString).range(of: string_to_color)

let attribute = NSMutableAttributedString.init(string: main_string)
attribute.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.red , range: range)


txtfield1 = UITextField.init(frame:CGRect(x:10 , y:20 ,width:100 , height:100))
txtfield1.attributedText = attribute

SWIFT 4.2

 let txtfield1 :UITextField!

    let main_string = "Hello World"
    let string_to_color = "World"

    let range = (main_string as NSString).range(of: string_to_color)

    let attribute = NSMutableAttributedString.init(string: main_string)
    attribute.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor.red , range: range)


    txtfield1 = UITextField.init(frame:CGRect(x:10 , y:20 ,width:100 , height:100))
    txtfield1.attributedText = attribute

Answer 3

Swift 2.1更新：

 let text = "We tried to make this app as most intuitive as possible for you. If you have any questions don't hesitate to ask us. For a detailed manual just click here."
 let linkTextWithColor = "click here"

 let range = (text as NSString).rangeOfString(linkTextWithColor)

 let attributedString = NSMutableAttributedString(string:text)
 attributedString.addAttribute(NSForegroundColorAttributeName, value: UIColor.redColor() , range: range)

 self.helpText.attributedText = attributedString

self.helpText是UILabel出口。

Answer 4

以前的帖子已经给出了答案，但我有不同的方式来做这个

Swift 3x：

var myMutableString = NSMutableAttributedString()

myMutableString = NSMutableAttributedString(string: "Your full label textString")

myMutableString.setAttributes([NSFontAttributeName : UIFont(name: "HelveticaNeue-Light", size: CGFloat(17.0))!
        , NSForegroundColorAttributeName : UIColor(red: 232 / 255.0, green: 117 / 255.0, blue: 40 / 255.0, alpha: 1.0)], range: NSRange(location:12,length:8)) // What ever range you want to give

yourLabel.attributedText = myMutableString

希望这有助于任何人！

Answer 5

克里斯的回答对我来说是一个很大的帮助，所以我用他的方法变成了一个我可以重用的功能。这让我为子串指定颜色，同时为字符串的其余部分添加另一种颜色。

static func createAttributedString(fullString: String, fullStringColor: UIColor, subString: String, subStringColor: UIColor) -> NSMutableAttributedString
{
    let range = (fullString as NSString).rangeOfString(subString)
    let attributedString = NSMutableAttributedString(string:fullString)
    attributedString.addAttribute(NSForegroundColorAttributeName, value: fullStringColor, range: NSRange(location: 0, length: fullString.characters.count))
    attributedString.addAttribute(NSForegroundColorAttributeName, value: subStringColor, range: range)
    return attributedString
}

Answer 6

Swift 4.1

NSAttributedStringKey.foregroundColor

例如，如果您想在NavBar中更改字体：

self.navigationController?.navigationBar.titleTextAttributes = [ NSAttributedStringKey.font: UIFont.systemFont(ofSize: 22), NSAttributedStringKey.foregroundColor: UIColor.white]

Answer 7

您可以使用此扩展名我通过

进行了测试

迅捷4.2

import Foundation
import UIKit

extension NSMutableAttributedString {

    convenience init (fullString: String, fullStringColor: UIColor, subString: String, subStringColor: UIColor) {
           let rangeOfSubString = (fullString as NSString).range(of: subString)
           let rangeOfFullString = NSRange(location: 0, length: fullString.count)//fullString.range(of: fullString)
           let attributedString = NSMutableAttributedString(string:fullString)
           attributedString.addAttribute(NSAttributedStringKey.foregroundColor, value: fullStringColor, range: rangeOfFullString)
           attributedString.addAttribute(NSAttributedStringKey.foregroundColor, value: subStringColor, range: rangeOfSubString)

           self.init(attributedString: attributedString)
   }

}

Answer 8

Swift 2.2

var myMutableString = NSMutableAttributedString()

myMutableString = NSMutableAttributedString(string: "1234567890", attributes: [NSFontAttributeName:UIFont(name: kDefaultFontName, size: 14.0)!])

myMutableString.addAttribute(NSForegroundColorAttributeName, value: UIColor(red: 0.0/255.0, green: 125.0/255.0, blue: 179.0/255.0, alpha: 1.0), range: NSRange(location:0,length:5))

self.lblPhone.attributedText = myMutableString

Answer 9

根据我创建字符串扩展名之前的答案

=FILTER({"a";"b";"c";"d"},{"a";"b";"c";"d"}<>A1)

您可以将文本的属性传递给方法

像这样打电话

extension String {

func highlightWordsIn(highlightedWords: String, attributes: [[NSAttributedStringKey: Any]]) -> NSMutableAttributedString {
     let range = (self as NSString).range(of: highlightedWords)
     let result = NSMutableAttributedString(string: self)

     for attribute in attributes {
         result.addAttributes(attribute, range: range)
     }

     return result
    }
}

Answer 10

在扩展String时使用NSMutableAttributedString的非常简单的方法。 Swift 4.2中的解决方案，但我认为在其他Swift版本中也很容易处理。这也可以用于给整个字符串中的多个单词上色。

为扩展名添加新文件，文件->新建->新文件，名称为ex。 “ NSAttributedString + TextColouring”并添加代码

import UIKit

extension String {
    func attributedStringWithColor(_ strings: [String], color: UIColor, characterSpacing: UInt? = nil) -> NSAttributedString {
        let attributedString = NSMutableAttributedString(string: self)
        for string in strings {
            let range = (self as NSString).range(of: string)
            attributedString.addAttribute(NSAttributedString.Key.foregroundColor, value: color, range: range)
        }

        guard let characterSpacing = characterSpacing else {return attributedString}

        attributedString.addAttribute(NSAttributedString.Key.kern, value: characterSpacing, range: NSRange(location: 0, length: attributedString.length))

        return attributedString
    }
}

现在，您可以在所需的任何视图控制器上全局使用

：

let attributedWithTextColor: NSAttributedString = "Doc, welcome back :)".attributedStringWithColor(["Doc", "back"], color: UIColor.black)

myLabel.attributedText = attributedWithTextColor

Answer 11

此扩展在使用已设置的默认颜色配置标签文本时效果很好。

name: Build and Deploy
on:
  push:
    branches:
      - master

jobs:
  build:
    name: Build Website 
    runs-on: ubuntu-latest
    steps:
      - name: Checkout Repo
        uses: actions/checkout@master
      - name: Install Website Dependencies
        run: cd website && npm install 
      - name: Audit & Fund Website Dependencies
        run: cd website && npm audit fix && npm fund
      - name: Build Website
        run: cd website && CI=false npm run build <<-------------fail at this
  deploy:
    name: Deploy Website to Live
    needs: build
    runs-on: ubuntu-latest
    steps:
      - name: Deploy to Live Domain
        uses: w9jds/firebase-action@master
        with:
          args: deploy --only hosting:dev
        env:
          FIREBASE_TOKEN: ${{ secrets.FIREBASE_TOKEN }}

例如

public extension String {
    func setColor(_ color: UIColor, ofSubstring substring: String) -> NSMutableAttributedString {
        let range = (self as NSString).range(of: substring)
        let attributedString = NSMutableAttributedString(string: self)
        attributedString.addAttribute(NSAttributedString.Key.foregroundColor, value: color, range: range)
        return attributedString
    }
}

Answer 12

使用此简单功能，您可以分配文本并突出显示所选单词。

您还可以将 UITextView 更改为 UILabel ，等等。

func highlightBoldWordAtLabel(textViewTotransform: UITextView, completeText: String, wordToBold: String){
    textViewToTransform.text = completeText
    let range = (completeText as NSString).range(of: wordToBold)
    let attribute = NSMutableAttributedString.init(string: completeText)

    attribute.addAttribute(NSAttributedString.Key.font, value: UIFont.boldSystemFont(ofSize: 16), range: range)
    attribute.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.black , range: range)
    textViewToTransform.attributedText = attribute
}

Answer 13

Swift 4.1

我已经改变了在Swift 3中

let str = "Welcome "
let welcomeAttribute = [ NSForegroundColorAttributeName: UIColor.blue()]
let welcomeAttrString = NSMutableAttributedString(string: str, attributes: welcomeAttribute)

这在Swift 4.0中

let str = "Welcome "
let welcomeAttribute = [ NSAttributedStringKey.foregroundColor: UIColor.blue()]
let welcomeAttrString = NSMutableAttributedString(string: str, attributes: welcomeAttribute)

到 Swift 4.1

let str = "Welcome "
let welcomeAttribute = [ NSAttributedStringKey(rawValue: NSForegroundColorAttributeName): UIColor.blue()]
let welcomeAttrString = NSMutableAttributedString(string: str, attributes: welcomeAttribute)

工作正常

Answer 14

对于正在寻找“ 将特定颜色应用于文本中的多个单词 ”的每个人，我们都可以使用 NSRegularExpression

 func highlight(matchingText: String, in text: String) {
    let attributedString  = NSMutableAttributedString(string: text)
    if let regularExpression = try? NSRegularExpression(pattern: "\(matchingText)", options: .caseInsensitive) {
        let matchedResults = regularExpression.matches(in: text, options: [], range: NSRange(location: 0, length: attributedString.length))
        for matched in matchedResults {
             attributedString.addAttributes([NSAttributedStringKey.backgroundColor : UIColor.yellow], range: matched.range)

        }
        yourLabel.attributedText = attributedString
    }
}

参考链接：https://gist.github.com/aquajach/4d9398b95a748fd37e88

Answer 15

迅速4.2

    let textString = "Hello world"
    let range = (textString as NSString).range(of: "world")
    let attributedString = NSMutableAttributedString(string: textString)

    attributedString.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor.red, range: range)
    self.textUIlable.attributedText = attributedString

Answer 16

这可能对您有用

let main_string = " User not found,Want to review ? Click here"
    let string_to_color = "Click here"

    let range = (main_string as NSString).range(of: string_to_color)

    let attribute = NSMutableAttributedString.init(string: main_string)
    attribute.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor.blue , range: range)

    lblClickHere.attributedText = attribute

Answer 17

使用不同样式（如颜色，字体等）进行标注的最简单方法是在属性检查器中使用属性“属性”。只需选择部分文字并按照您的需要进行更改

Answer 18

您可以使用简单的扩展名

extension String{

func attributedString(subStr: String) -> NSMutableAttributedString{
    let range = (self as NSString).range(of: subStr)
    let attributedString = NSMutableAttributedString(string:self)
    attributedString.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.red , range: range)
    
    return attributedString
  }
}

myLable.attributedText = fullStr.attributedString(subStr: strToChange)

Answer 19

超级简单的方法。

let text = "This is a colorful attributed string"
let attributedText = 
NSMutableAttributedString.getAttributedString(fromString: text)
attributedText.apply(color: .red, subString: "This")
//Apply yellow color on range
attributedText.apply(color: .yellow, onRange: NSMakeRange(5, 4))

有关更多详细信息，请单击此处： https://github.com/iOSTechHub/AttributedString

Answer 20

要更改字体颜色的颜色，请首先选择属性而非下图所示的普通字体

然后，您需要在属性字段中选择文本，然后选择路线右侧的颜色按钮。这将改变颜色。

Answer 21

您可以使用此方法。我在通用工具类中实现了此方法以进行全局访问。

func attributedString(with highlightString: String, normalString: String, highlightColor: UIColor) -> NSMutableAttributedString {
    let attributes = [NSAttributedString.Key.foregroundColor: highlightColor]
    let attributedString = NSMutableAttributedString(string: highlightString, attributes: attributes)
    attributedString.append(NSAttributedString(string: normalString))
    return attributedString
}

Answer 22

您需要更改textview参数，而不是属性字符串的参数

textView.linkTextAttributes = [
        NSAttributedString.Key.foregroundColor: UIColor.red,
        NSAttributedString.Key.underlineColor: UIColor.red,
        NSAttributedString.Key.underlineStyle: NSUnderlineStyle.single.rawValue
    ]

Answer 23

请检查可可足纲Prestyler：

    private void getValues()
{
    Log.v(TAG, "getValues(): init");

    EditText nameET = findViewById(R.id.nameET);
    EditText descriptionET = findViewById(R.id.descriptionET);
    EditText priceET = findViewById(R.id.priceET);
    EditText categoryET = findViewById(R.id.categoryET);
    CheckBox stateCHB = findViewById(R.id.checkBox);

    String name = nameET.getText().toString();
    String description = descriptionET.getText().toString();
    Float price = Float.valueOf(priceET.getText().toString());
    String category = categoryET.getText().toString();
    boolean state;

    if (stateCHB.isChecked())
    {
        state = true;
    }
    else
    {
        state = false;
    }

    sendDataToServer(name, description, price, state, category, imagePath);

    Log.v(TAG, "getValues(): end");

}

Answer 24

extension String{
// to make text field mandatory * looks
mutating func markAsMandatoryField()-> NSAttributedString{

    let main_string = self
    let string_to_color = "*"
    let range = (main_string as NSString).range(of: string_to_color)
    print("The rang = \(range)")
    let attribute = NSMutableAttributedString.init(string: main_string)
    attribute.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.rgbColor(red: 255.0, green: 0.0, blue: 23.0) , range: range)
     return attribute
}

}

使用 EmailLbl.attributedText = EmailLbl.text！.markAsMandatoryField（）

Answer 25

如果您使用的是Swift 3x和UITextView，那么NSForegroundColorAttributeName可能无法正常工作（无论我采用何种方法，它都不适合我。）

所以，经过一番挖掘，我找到了解决方案。

//Get the textView somehow
let textView = UITextView()
//Set the attributed string with links to it
textView.attributedString = attributedString
//Set the tint color. It will apply to the link only
textView.tintColor = UIColor.red

使用Swift中的NSMutableAttributedString更改特定文本的颜色

25 个答案:

Swift 4.1

迅捷4.2