CODEWITHSUNDEEP
swiftcolorstextcolornsmutableattributedstring
WoShiNiBaBa
WoShiNiBaBa

Reputation: 267

Change the color of specific texts within an array of string. Swift

How do you change the color of specific texts within an array of string that's going to be passed into a label?

Let's say I have an array of string:

var stringData = ["First one", "Please change the color", "don't change me"]

And then it's passed to some labels:

Label1.text = stringData[0]
Label2.text = stringData[1]
Label3.text = stringData[2]

What's the best approach to change the color of the word "the" in stringData[1]?

Thank you in advance for your help!

Upvotes: 1

Views: 1699

Answers (2)

Code Different
Code Different

Reputation: 93151

If you want to change the color of all the in your string:

func highlight(word: String, in str: String, with color: UIColor) -> NSAttributedString {
    let attributedString = NSMutableAttributedString(string: str)
    let highlightAttributes = [NSForegroundColorAttributeName: color]

    let nsstr = str as NSString
    var searchRange = NSMakeRange(0, nsstr.length)

    while true {
        let foundRange = nsstr.range(of: word, options: [], range: searchRange)
        if foundRange.location == NSNotFound {
            break
        }

        attributedString.setAttributes(highlightAttributes, range: foundRange)

        let newLocation = foundRange.location + foundRange.length
        let newLength = nsstr.length - newLocation
        searchRange = NSMakeRange(newLocation, newLength)
    }

    return attributedString
}

label2.attributedText = highlight(word: "the", in: stringData[1], with: .red)

Upvotes: 2

jhd
jhd

Reputation: 1253

let str = NSMutableAttributedString(string: "Please change the color")
str.addAttributes([NSForegroundColorAttributeName: UIColor.red], range: NSMakeRange(14, 3))
label.attributedText = str

The range is the range of the specific text.

Upvotes: 4

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