1. Convert your attributed string into an instance of NSMutableAttributedString.

2. 归 attributed的胎体有<条码>动产/编码>财产。 根据文件:

   “接收人跟踪这一方位的变化,并随时将其属性勘测到日期”。

   因此,你可以使用由此产生的变体执行更换<代码>replaceOccurrencesOfString:options:range:。

在这方面,你如何能够改变国家安全局的实力。 在保留其属性的同时,协助制定:

<>Swift>:

// first we create a mutable copy of attributed text 
let originalAttributedText = nameLabel.attributedText?.mutableCopy() as! NSMutableAttributedString

// then we replace text so easily
let newAttributedText = originalAttributedText.mutableString.setString("new text to replace")

www.un.org/Depts/DGACM/index_spanish.htm 目标C:

NSMutableAttributedString *newAttrStr = [attribtedTxt.mutableString setString:@"new string"];

在我的案件中,只有以下方式(在SOS9上测试):

NSAttributedString *attributedString = ...;
NSAttributedString *anotherAttributedString = ...; //the string which will replace

while ([attributedString.mutableString containsString:@"replace"]) {
        NSRange range = [attributedString.mutableString rangeOfString:@"replace"];
        [attributedString replaceCharactersInRange:range  withAttributedString:anotherAttributedString];
    }

当然,找到另一种更好的办法是明智的。

我不得不在<代码><b>tags上用黑体字表示,我在此做的是:

- (NSAttributedString *)boldString:(NSString *)string {
    UIFont *boldFont = [UIFont boldSystemFontOfSize:14];
    NSMutableAttributedString *attributedDescription = [[NSMutableAttributedString alloc] initWithString:string];

    NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@".*?<b>(.*?)<\/b>.*?" options:NSRegularExpressionCaseInsensitive error:NULL];
    NSArray *myArray = [regex matchesInString:string options:0 range:NSMakeRange(0, string.length)] ;
    for (NSTextCheckingResult *match in myArray) {
        NSRange matchRange = [match rangeAtIndex:1];
        [attributedDescription addAttribute:NSFontAttributeName value:boldFont range:matchRange];
    }
    while ([attributedDescription.string containsString:@"<b>"] || [attributedDescription.string containsString:@"</b>"]) {
        NSRange rangeOfTag = [attributedDescription.string rangeOfString:@"<b>"];
        [attributedDescription replaceCharactersInRange:rangeOfTag withString:@""];
        rangeOfTag = [attributedDescription.string rangeOfString:@"</b>"];
        [attributedDescription replaceCharactersInRange:rangeOfTag withString:@""];
    }
    return attributedDescription;
}

NSMutableAttributedString *result = [[NSMutableAttributedString alloc] initWithString:@"I am a boy."];
[result addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(0, [result length])];

NSMutableAttributedString *replace = [[NSMutableAttributedString alloc] initWithString:@"a"];
[replace addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, [replace length])];

[result replaceCharactersInRange:NSMakeRange(5, [replace length]) withAttributedString:replace];

I find that all of the other answers does not work. Here is how I replaced content of a NSAttributed string in a category extension:

func stringWithString(stringToReplace:String, replacedWithString newStringPart:String) -> NSMutableAttributedString
{
    let mutableAttributedString = mutableCopy() as! NSMutableAttributedString
    let mutableString = mutableAttributedString.mutableString

    while mutableString.containsString(stringToReplace) {
        let rangeOfStringToBeReplaced = mutableString.rangeOfString(stringToReplace)
        mutableAttributedString.replaceCharactersInRange(rangeOfStringToBeReplaced, withString: newStringPart)
    }
    return mutableAttributedString
}

我有具体要求,并固定如下。 这可能有助于某人。

Requirement: In the storyboard, rich text directly added to UITextView s attribute which contains a word "App Version: 1.0". Now I have to dynamise the version number by reading it from info plist.

Solution: Deleted version number 1.0 from the storyboard, just kept "App Version:" and added below code.

NSAttributedString *attribute = self.firsttextView.attributedText;
NSMutableAttributedString *mutableAttri = [[NSMutableAttributedString alloc] initWithAttributedString:attribute];
NSString *appVersionText = @"App Version:";
if ([[mutableAttri mutableString] containsString:appVersionText]) {
    NSDictionary* infoDict = [[NSBundle mainBundle] infoDictionary];
    NSString* version = [infoDict objectForKey:@"CFBundleShortVersionString"];
    NSString *newappversion = [NSString stringWithFormat:@"%@ %@",appVersionText,version] ;
    [[mutableAttri mutableString] replaceOccurrencesOfString:appVersionText withString:newappversion options:NSCaseInsensitiveSearch range:NSMakeRange(0, mutableAttri.length)];
    self.firsttextView.attributedText = mutableAttri;
}

Don! 1. 更新/修改的归属 案文。

i 迅速扩大5

extension NSMutableAttributedString {
    
    func replace(_ findString: String, with replacement: String, attributes: [NSAttributedString.Key : Any]) {
        
        let ms = mutableString
        
        var range = ms.range(of: findString)
        while range.location != NSNotFound {
            addAttributes(attributes, range: range)
            ms.replaceCharacters(in: range, with: replacement)
            
            range = ms.range(of: findString)
        }
        
    }

}

使用情况

attributedString.replace("%EMAIL%", with: email, attributes: [.font:boldFont])