NSTextCheckingResult类 ios自带识别电话号码，网址等

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;
}