Ios 如何进行突出显示的匹配（NSRegularExpression）？

我想让文本视图中的匹配为蓝色

NSString *text = @"Except as contained in #wep this notice, the name of a copyright #ololo holder shall not be used in  #pewpewpew advertising or otherwise to #promote";

NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"#\\w*" options:0 error:NULL];
NSArray *matches = [regex matchesInString:text options:0 range:NSMakeRange(0, [text length])];
NSLog(@"count %d", matches.count);

for (NSTextCheckingResult *match in matches) {
    NSRange matchRange = [match range];
    NSString *match = [text substringWithRange:matchRange];
    NSLog(@"Matched string: %@", match);
}
self.myTextView.text = text;

---

您必须创建

NSAttributedString

，然后根据范围应用字体，并将attributedText设置为您的

UITextView

而不是简单的文本

您的代码应该如下所示

NSMutableAttributedString *attrib = [[NSMutableAttributedString alloc]initWithString:text];

for (NSTextCheckingResult *match in matches) {
    NSRange matchRange = [match range];
    NSString *match = [text substringWithRange:matchRange];
    NSLog(@"Matched string: %@", match);
    // set your rgb color here which you want i added blue color.
    [attrib addAttribute:NSForegroundColorAttributeName
                   value:[UIColor blueColor]
                   range:matchRange];
}
// set attributed text not a normal text.
self.myTextView.attributedText = attrib;

---

也许这会对您有所帮助。

使用

nsmutableAttributeString

OK。以及如何匹配按钮？表示无法理解。作为按钮的匹配（UIButton）

NSMutableAttributedString *attrib = [[NSMutableAttributedString alloc]initWithString:text];

for (NSTextCheckingResult *match in matches) {
    NSRange matchRange = [match range];
    NSString *match = [text substringWithRange:matchRange];
    NSLog(@"Matched string: %@", match);
    // set your rgb color here which you want i added blue color.
    [attrib addAttribute:NSForegroundColorAttributeName
                   value:[UIColor blueColor]
                   range:matchRange];
}
// set attributed text not a normal text.
self.myTextView.attributedText = attrib;