NSDataDetector是NSRegularExpression的子类，主要用于检测半结构化的数据：日期，地址，电话号码，正则表达式等等。

//首先有一段字符串

NSString *str = @"www.baidu.comdhfjdfj17701031767";

//根据检测的类型初始化 这里是检测电话号码和网址

NSDataDetector NSDataDetector *detector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypePhoneNumber | NSTextCheckingTypeLink error:&error];

//获得检测所得到的数组

 NSArray *matches = [detector matchesInString:str options:0 range:inputRange];

//获得检测得到的总数

 //- (NSUInteger)numberOfMatchesInString:(NSString *)string options:(NSMatchingOptions)options range:(NSRange)range;

//第一个检测到的数据

//- (NSTextCheckingResult *)firstMatchInString:(NSString *)string options:(NSMatchingOptions)options range:(NSRange)range;

for (NSTextCheckingResult *match in matches) {

//当match匹配为网址时设置颜色

    if ([match resultType] == NSTextCheckingTypeLink) {

            NSRange matchRange = [match range];

          if ([self isIndex:index inRange:matchRange]) {

                [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor grayColor] range:matchRange];

            }

           else {

                [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:matchRange];

            }

            [attributedString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:matchRange];

        }

//当match匹配为电话号码时设置其attribute

     if ([match resultType] == NSTextCheckingTypePhoneNumber) {

            NSRange matchRange = [match range];   

            if ([self isIndex:index inRange:matchRange]) {

                [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor grayColor] range:matchRange];

            }

            else {

                [attributedString addAttribute:NSForegroundColorAttributeName value:[UIColor yellowColor] range:matchRange];

            }

            [attributedString addAttribute:NSUnderlineStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:matchRange];

        }

 _textLabel.attributedText = attributedString;

}

- (BOOL)isIndex:(CFIndex)index inRange:(NSRange)range

{

    return index > range.location && index < range.location+range.length;

}