This works for a regular NSString:
NSString *newString = [myString stringByReplacingOccurrencesOfString:@"," withString:@""];
But there is no such method for NSMutableAttributedString. How could I remove all instances of a comma in an NSMutableAttributedString?
let attrString = NSMutableAttributedString(string: "Hello <b>friend<b>")
attrString.mutableString.replaceOccurrencesOfString("<b>", withString: "", options: NSStringCompareOptions.CaseInsensitiveSearch, range: NSRange(location: 0, length: attrString.length))
Try this :)
Do it before you create the attributed string, if you can or depending on how you source it. If you can't then you can use replaceCharactersInRange:withString: (or replaceCharactersInRange:withAttributedString:), but you need to know the range so you need to search and iterate yourself.
string - the plain version of the attributed string - and find the range of the target string. But, you need to get it on each iteration as you'll be mutating the original string, or track the mutation range...NSString *newString= "I want to ,show, you how to achieve this";
NSMutableAttributedString *displayText = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@",newString]];
[[displayText mutableString] replaceOccurrencesOfString:@"," withString:@"" options:NSCaseInsensitiveSearch range:NSMakeRange(0, displayText.string.length)];
You can initialize the attributed string with the stripped string with the designed init. No?
The code could be applied from my answer here:
NSAttributedString *attributedString = ...;
NSAttributedString *anotherAttributedString = ...; //the string or characters which will replace
while ([attributedString.mutableString containsString:@"replace"]) {
NSRange range = [attributedString.mutableString rangeOfString:@"replace"];
[attributedString replaceCharactersInRange:range withAttributedString:anotherAttributedString];
}
The compleate solution
extension NSAttributedString {
func replacingOccurrences(of target: String, with replacement: String, attributes: [NSAttributedString.Key : Any]? = nil) -> NSAttributedString {
let s = NSMutableAttributedString(attributedString: self)
s.beginEditing()
s.replaceOccurrences(of: target, with: replacement, attributes: attributes)
s.endEditing()
return s
}
}
extension NSMutableAttributedString {
func replaceOccurrences(of target: String, with replacement: String, attributes: [NSAttributedString.Key : Any]? = nil) {
var searchRange = NSRange(location: 0, length: self.length)
while let range = self.string.range(of: target, options: [], range: Range(searchRange, in: self.string)) {
let nsRange = NSRange(range, in: self.string)
self.replaceCharacters(in: nsRange, with: replacement)
let newRange = NSRange(location: nsRange.location, length: replacement.count)
if let attributes = attributes {
self.addAttributes(attributes, range: newRange)
}
searchRange = NSRange(location: newRange.upperBound, length: self.length - newRange.upperBound)
}
}
}
