NSString에 다음이 포함되어 있는지 감지 중 ...?

NSString에 다음이 포함되어 있는지 감지 중 ...?

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문자열에 특정 단어가 포함되어 있는지 어떻게 알 수 있습니까? 예를 들어 아래에 문자열이 있습니다.

@"Here is my string."

예를 들어 "is"와 같은 문자열에서 단어를 감지 할 수 있는지 알고 싶습니다.

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내가하는 방법은 다음과 같습니다.

NSString *someString = @"Here is my string";
NSRange isRange = [someString rangeOfString:@"is " options:NSCaseInsensitiveSearch];
if(isRange.location == 0) {
   //found it...
} else {
   NSRange isSpacedRange = [someString rangeOfString:@" is " options:NSCaseInsensitiveSearch];
   if(isSpacedRange.location != NSNotFound) {
      //found it...
   }
}

이것을 카테고리로 쉽게 추가 할 수 있습니다 NSString:

@interface NSString (JRStringAdditions) 

- (BOOL)containsString:(NSString *)string;
- (BOOL)containsString:(NSString *)string
               options:(NSStringCompareOptions)options;

@end

@implementation NSString (JRStringAdditions) 

- (BOOL)containsString:(NSString *)string
               options:(NSStringCompareOptions)options {
   NSRange rng = [self rangeOfString:string options:options];
   return rng.location != NSNotFound;
}

- (BOOL)containsString:(NSString *)string {
   return [self containsString:string options:0];
}

@end

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문장에서 단어를 스캔하려면 다음 코드를 사용하십시오.

NSString *sentence = @"The quick brown fox";
NSString *word = @"quack";
if ([sentence rangeOfString:word].location != NSNotFound) {
    NSLog(@"Yes it does contain that word");
}

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iOS8에서는 이제 다음을 사용할 수 있습니다.

BOOL containsString = [@"Here is my string." containsString:@"is"];

iOS7에 "개장"하는 방법에 대한 흥미로운 게시물이 있습니다 : http://petersteinberger.com/blog/2014/retrofitting-containsstring-on-ios-7/

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NSLinguisticTagger을 사용하는 것이 좋습니다 . 검색에 사용할 수 있습니다Here is my string. His isn't a mississippi isthmus. It is?

NSLinguisticTagger *linguisticTagger = [[NSLinguisticTagger alloc] initWithTagSchemes:@[
                                        NSLinguisticTagSchemeTokenType,
                                        ]
                                                                              options:
                                        NSLinguisticTaggerOmitPunctuation |
                                        NSLinguisticTaggerOmitWhitespace |
                                        NSLinguisticTaggerOmitOther ];
[linguisticTagger setString:@"Here is my string. His isn't a mississippi isthmus. It is?"];
[linguisticTagger enumerateTagsInRange:NSMakeRange(0,
                                                   [[linguisticTagger string] length])
                                scheme:NSLinguisticTagSchemeTokenType
                               options:
 NSLinguisticTaggerOmitPunctuation |
 NSLinguisticTaggerOmitWhitespace |
 NSLinguisticTaggerOmitOther |
 NSLinguisticTaggerJoinNames
                            usingBlock:^(NSString *tag, NSRange tokenRange, NSRange sentenceRange, BOOL *stop) {
                                NSLog(@"tag: %@, tokenRange: %@, sentenceRange: %@, token: %@",
                                      tag,
                                      NSStringFromRange(tokenRange),
                                      NSStringFromRange(sentenceRange),
                                      [[linguisticTagger string] substringWithRange:tokenRange]);
                            }];

이 결과는 다음과 같습니다.

tag: Word, tokenRange: {0, 4}, sentenceRange: {0, 19}, token: Here
tag: Word, tokenRange: {5, 2}, sentenceRange: {0, 19}, token: is
tag: Word, tokenRange: {8, 2}, sentenceRange: {0, 19}, token: my
tag: Word, tokenRange: {11, 6}, sentenceRange: {0, 19}, token: string
tag: Word, tokenRange: {19, 3}, sentenceRange: {19, 33}, token: His
tag: Word, tokenRange: {23, 2}, sentenceRange: {19, 33}, token: is
tag: Word, tokenRange: {25, 3}, sentenceRange: {19, 33}, token: n't
tag: Word, tokenRange: {29, 1}, sentenceRange: {19, 33}, token: a
tag: Word, tokenRange: {31, 11}, sentenceRange: {19, 33}, token: mississippi
tag: Word, tokenRange: {43, 7}, sentenceRange: {19, 33}, token: isthmus
tag: Word, tokenRange: {52, 2}, sentenceRange: {52, 6}, token: It
tag: Word, tokenRange: {55, 2}, sentenceRange: {52, 6}, token: is

내부를 무시 His mississippi하고 isthmus심지어 식별 합니다.isisn't

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I hope this helps you,.. add this line at .m file or create a separate class and integrate this code.

@implementation NSString (Contains)

- (BOOL) containsString: (NSString*) substring
{
NSRange range = [self rangeOfString : substring];
BOOL found = ( range.location != NSNotFound );
return found;
}    
@end

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With iOS 8 and Swift, we can use localizedCaseInsensitiveContainsString method

 let string: NSString = "Café"
 let substring: NSString = "É"

 string.localizedCaseInsensitiveContainsString(substring) // true

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A complete solution would first scan for the string (without added blanks), then check if the immediately prior character is either blank or beginning of line. Similarly check if the immediately following character is either blank or end of line. If both tests pass then you have a match. Depending on your needs you might also check for ,, ., (), etc.

An alternative approach, of course, is to parse the string into words and check each word individually.

참고URL : https://stackoverflow.com/questions/3293499/detecting-if-an-nsstring-contains