博客> NSDataDetector跟NSTextCheckingResult的使用
NSDataDetector跟NSTextCheckingResult的使用
2018-07-21 13:59 评论:0 阅读:1151 内牛满面ing
ios

NSDataDetector和NSTextCheckingResult的使用 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。 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 };

使用方法 NSError error = nil; //根据检测的类型初始化NSDataDetector NSDataDetector detector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypePhoneNumber | NSTextCheckingTypeLink error:&error]; //需要检测的字符串 NSString testStr = @"有一个网址:wwww.JohnnyLiu.com有一个电话:15310547654 还有一个地址:大屯路"; //可以有多种方法检测匹配的数据 //1.检测然后对每个检测到的数据进行操作 //- (void)enumerateMatchesInString:(NSString )string options:(NSMatchingOptions)options range:(NSRange)range usingBlock:(void (^)(NSTextCheckingResult result, NSMatchingFlags flags, BOOL stop))block; //2.检测获得检测得到的数组 //- (NSArray )matchesInString:(NSString )string options:(NSMatchingOptions)options range:(NSRange)range; //3.获得检测得到的总数 //- (NSUInteger)numberOfMatchesInString:(NSString )string options:(NSMatchingOptions)options range:(NSRange)range; //4.第一个检测到的数据 //- (NSTextCheckingResult )firstMatchInString:(NSString )string options:(NSMatchingOptions)options range:(NSRange)range; //5.第一检测到的数据的Range //- (NSRange)rangeOfFirstMatchInString:(NSString )string options:(NSMatchingOptions)options range:(NSRange)range;

[detector enumerateMatchesInString:testStr
                           options:kNilOptions
                             range:NSMakeRange(0, testStr.length)
                        usingBlock:^(NSTextCheckingResult *result, NSMatchingFlags flags, BOOL *stop) {
                            //NSTextCheckingResult有很多属性,和检测的类型相匹配,如URL,phoneNumber,date,addressComponents等等
                            //NSTextCheckingResult还有Range 和 NSTextCheckingType两个属性,方便进行操作
                            NSLog(@"result.range = %@",NSStringFromRange(result.range));
                            if (result.URL) {
                                NSLog(@"url = %@",result.URL);
                            }
                            if (result.phoneNumber) {
                                NSLog(@"phone = %@",result.phoneNumber);
                            }
}];
//结果-------------------------------------------
//result.range = {6, 18}
//url = http://wwww.JohnnyLiu.com
//result.range = {27, 14}
//phone = 电话:15310547654
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