如何检测字符串是否包含某个单词?例如,我在下面有一个字符串,内容是:
@"Here is my string."
我想知道我是否能在字符串中检测到一个单词,例如"is“。
发布于 2010-07-21 03:19:37
下面是我会怎么做:
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...
}
}
您可以轻松地将其作为类别添加到NSString
中
@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
发布于 2013-03-01 13:53:39
使用以下代码扫描句子中的单词。
NSString *sentence = @"The quick brown fox";
NSString *word = @"quack";
if ([sentence rangeOfString:word].location != NSNotFound) {
NSLog(@"Yes it does contain that word");
}
发布于 2014-10-29 13:19:41
在iOS8中,您现在可以使用:
BOOL containsString = [@"Here is my string." containsString:@"is"];
这里有一个关于如何将其“改造”为iOS7的有趣帖子:http://petersteinberger.com/blog/2014/retrofitting-containsstring-on-ios-7/
https://stackoverflow.com/questions/3293499
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