Find Range of substring in NSMutableAttributedString

Question

I have AttributedString with emoji like this " @Mervin tester "

Now I need to find a range of Mervin in this attributed String.

let attributedString = NSMutableAttributedString(string: " @Mervin tester ")

let range = // range for "Mervin" in above String.

Thank you.

Do you know `Mervin`? Or you are looking for `@SomeName`? Else, `let range = attributedString.string.rangeOfString("Marvin")` (in pseudo code, I'm not sure of the Swift methods names, but completion should help you). — Larme, Jun 29 '17 at 08:27
@Larme Thank you, it's working. I was trying same with utf-8 string so it was showing the wrong result. — Ujesh, Jun 29 '17 at 13:05

score 23 · Accepted Answer · answered Jun 29 '17 at 09:16

23

This extension should help you.

extension NSAttributedString {
    func rangeOf(string: String) -> Range<String.Index>? {
        return self.string.range(of: string)
    }
}

Usage:

attributedString.rangeOf(string: "Mervin")

answered Jun 29 '17 at 09:16

Oleg Gordiichuk

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I am getting wrong rang and as well how to find the ranges when you have multiple Mervin in attributed string – Satheeshkumar Naidu Sep 25 '18 at 09:19

score -1 · Answer 2 · answered Aug 13 '23 at 15:16

I wanted something similar but for AttributedString instead. It took me a while to find the solution, so I think I may document it here since this is the first search hit for my question.

let attributedString = AttributedString(" @Mervin tester ")
let substring = "Mervin"

// Iterating through all the occurrences of `substring`.
for range in attributedString.characters.ranges(of: substring) {
   // Do something with the current range
   attributedString[range].foregroundColor = .red
}

Find Range of substring in NSMutableAttributedString

2 Answers2