iOS 系统 api识别电话号码，地址，日期

利用系统 api 来识别文本中的电话号码，地址，日期等等

可以识别的有

typedef NS_OPTIONS(uint64_t, NSTextCheckingType) {    // a single type
    NSTextCheckingTypeOrthography           = 1ULL << 0,            // language identification
    NSTextCheckingTypeSpelling              = 1ULL << 1,            // spell checking
    NSTextCheckingTypeGrammar               = 1ULL << 2,            // grammar checking
    NSTextCheckingTypeDate                  = 1ULL << 3,            // date/time detection
    NSTextCheckingTypeAddress               = 1ULL << 4,            // address detection
    NSTextCheckingTypeLink                  = 1ULL << 5,            // link detection
    NSTextCheckingTypeQuote                 = 1ULL << 6,            // smart quotes
    NSTextCheckingTypeDash                  = 1ULL << 7,            // smart dashes
    NSTextCheckingTypeReplacement           = 1ULL << 8,            // fixed replacements, such as copyright symbol for (c)
    NSTextCheckingTypeCorrection            = 1ULL << 9,            // autocorrection
    NSTextCheckingTypeRegularExpression NS_ENUM_AVAILABLE(10_7, 4_0)  = 1ULL << 10,           // regular expression matches
    NSTextCheckingTypePhoneNumber NS_ENUM_AVAILABLE(10_7, 4_0)        = 1ULL << 11,           // phone number detection
    NSTextCheckingTypeTransitInformation NS_ENUM_AVAILABLE(10_7, 4_0) = 1ULL << 12            // transit (e.g. flight) info detection
};

typedef uint64_t NSTextCheckingTypes;   // a combination of types
NS_ENUM(NSTextCheckingTypes) {
    NSTextCheckingAllSystemTypes    = 0xffffffffULL,        // the first 32 types are reserved
    NSTextCheckingAllCustomTypes    = 0xffffffffULL << 32,  // clients may use the remainder for their own purposes
    NSTextCheckingAllTypes          = (NSTextCheckingAllSystemTypes | NSTextCheckingAllCustomTypes)
};

// 电话号码，利用正则表达式识别
- (NSArray<NSTextCheckingResult *> *)getRangesForPhoneNumbers:(NSString *)text
{
    NSString *expressionString = @"((?<=\\D)|^)((1+\\d{10})|(0+\\d{2,3}-\\d{7,8}|\\d{7,8}))((?=\\D)|$)";
    NSError *error;
    NSRegularExpression *expression = [NSRegularExpression regularExpressionWithPattern:expressionString options:NSRegularExpressionCaseInsensitive error:&error];
    
    NSMutableArray *ranges = [[NSMutableArray alloc] init];
    if (expression) {
        [expression enumerateMatchesInString:text options:0 range:NSMakeRange(0, text.length) usingBlock:^(NSTextCheckingResult * _Nullable result, NSMatchingFlags flags, BOOL * _Nonnull stop) {
            //                result.resultType == NSTextCheckingTypeRegularExpression, need change to NSTextCheckingTypePhoneNumber;
            NSString *phoneNumber = [text substringWithRange:result.range];
            NSTextCheckingResult *newResult = [NSTextCheckingResult phoneNumberCheckingResultWithRange:result.range phoneNumber:phoneNumber];
            [ranges addObject:newResult];
        }];
    }
    
    return ranges;
}

// 所有类别

改用正则表达式 识别电话号码，超长的数字字符串也可以过滤掉
@"((?<=\D)|^)((1+\d{10})|(0+\d{2,3}-\d{7,8}|\d{7,8}))((?=\D)|$)"

- (NSArray *)getRangesForAllCheckTypes:(NSString *)text
{
    NSMutableArray *rangesForPhoneNumbers = [[NSMutableArray alloc] init];;
    NSError *error = nil;
    NSDataDetector *detector = [[NSDataDetector alloc] initWithTypes:NSTextCheckingAllTypes error:&error];
    
    NSArray *matches = [detector matchesInString:text
                                         options:0
                                           range:NSMakeRange(0, text.length)];
    
    NSMutableArray *mutMatches = [matches mutableCopy];
    // remove phone number,use self
    NSPredicate *phoneNumberPredicate = [NSPredicate predicateWithBlock:^BOOL(NSTextCheckingResult*  _Nullable evaluatedObject, NSDictionary<NSString *,id> * _Nullable bindings) {
        if ([evaluatedObject isKindOfClass:[NSTextCheckingResult class]] &&
            [evaluatedObject resultType] != NSTextCheckingTypePhoneNumber) {
            
            return YES;
        } else {
            return NO;
        }
    }];
    [mutMatches filterUsingPredicate:phoneNumberPredicate];
    // \d{3,4}-\d{7,8}|\d{7,8}
    if (self.enabledTextCheckingTypes & NSTextCheckingTypePhoneNumber) {
        NSString *expressionString = @"((?<=\\D)|^)((1+\\d{10})|(0+\\d{2,3}-\\d{7,8}|\\d{7,8}))((?=\\D)|$)";
        NSError *error;
        NSRegularExpression *expression = [NSRegularExpression regularExpressionWithPattern:expressionString options:NSRegularExpressionCaseInsensitive error:&error];
        if (expression) {
            [expression enumerateMatchesInString:text.string options:0 range:NSMakeRange(0, text.string.length) usingBlock:^(NSTextCheckingResult * _Nullable result, NSMatchingFlags flags, BOOL * _Nonnull stop) {
//                result.resultType == NSTextCheckingTypeRegularExpression, need change to NSTextCheckingTypePhoneNumber;
                NSString *phoneNumber = [text.string substringWithRange:result.range];
                NSTextCheckingResult *newResult = [NSTextCheckingResult phoneNumberCheckingResultWithRange:result.range phoneNumber:phoneNumber];
                [mutMatches addObject:newResult];
            }];
        }
    }
    if (mutMatches.count == 0) {
        return NO;
    }
    for (NSTextCheckingResult *match in mutMatches)
    {
        NSRange matchRange = [match range];
        NSString *matchString = [text substringWithRange:matchRange];
        
        [rangesForPhoneNumbers addObject:@{
                                           @"linkType" : @([match resultType]),
                                           @"range"    : [NSValue valueWithRange:matchRange],
                                           @"link"     : matchString
                                           }];
    }
    return rangesForPhoneNumbers;
}