How can I tell if a string contains something? Something like:
if([someTextField.text containsString:@"hello"]) {
}
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there's nothing wrong to minus here:)vodkhang– vodkhang2010-08-03 01:03:03 +00:00Commented Aug 3, 2010 at 1:03
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Same as [ String contains string in objective-c (iphone) ](stackoverflow.com/questions/2753956/…).Matthew Flaschen– Matthew Flaschen2010-08-03 01:04:03 +00:00Commented Aug 3, 2010 at 1:04
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3 Answers
You could use:
if ( result && [result rangeOfString:@"hello"].location != NSNotFound ) {
// Substring found...
}
Comments
You have to use - (NSRange)rangeOfString:(NSString *)aString
NSRange range = [myStr rangeOfString:@"hello"];
if (range.location != NSNotFound) {
NSLog (@"Substring found at: %d", range.location);
}
View more here: NSString rangeOfString
3 Comments
JeremyP
In what Universe is that answer "a little bit tricky"?
vodkhang
Because for me, from the background of java. We should use [str contains:], so when I discovered the API, it looks a little bit strange. I think the questioner think the same so I say a little bit tricky
williamsandonz
hahahaha Jeremy's post just made me lol
If the intent of your code is to check if a string contains another string you can create a category to make this intent clear.
@interface NSString (additions)
- (BOOL)containsString:(NSString *)subString;
@end
@implementation NSString (additions)
- (BOOL)containsString:(NSString *)subString {
BOOL containsString = NO;
NSRange range = [self rangeOfString:subString];
if (range.location != NSNotFound) {
containsString = YES;
}
return containsString;
}
@end
I have not compiled this code, so maybe you should have to change it a bit.
Quentin
